Document:

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                                                                    Exhibit 10.1

                          SECOND AMENDED AND RESTATED

                            STOCKHOLDERS AGREEMENT

                                     among

                               IFX CORPORATION,

                        UBS CAPITAL AMERICAS III, L.P.,

                               UBS CAPITAL LLC,

                   INTERNATIONAL TECHNOLOGY INVESTMENTS, LC,

                               JOEL EIDELSTEIN,

                                MICHAEL SHALOM

                                      and

                            CASTY GRANTOR SUBTRUST

                        dated as of _____________, 2001
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                                IFX CORPORATION

              SECOND AMENDED AND RESTATED STOCKHOLDERS AGREEMENT

     THIS SECOND AMENDED AND RESTATED STOCKHOLDERS AGREEMENT (this "Agreement")
is entered as of __________, 2001, among IFX CORPORATION, a Delaware corporation
(the "Company"), UBS CAPITAL AMERICAS III, L.P., a Delaware limited partnership,
and UBS CAPITAL LLC, a Delaware limited liability company (collectively, "UBS"
and together with successors and assigns, the "Investor Stockholders"),
INTERNATIONAL TECHNOLOGY INVESTMENTS, LC, a Nevada limited liability company
("ITI"), JOEL EIDELSTEIN, individually ("Eidelstein"), MICHEAL SHALOM,
individually ("Shalom"), and the CASTY GRANTOR SUBTRUST ("Casty"; ITI, Shalom,
Eidelstein and Casty, individually, a "Stockholder," and collectively, the
"Stockholders").

                                   RECITALS
                                   --------

     WHEREAS, the Company and the Investor Stockholders entered into that
certain IFX Corporation Preferred Stock Purchase Agreement, dated as of June 15,
2000, pursuant to which the Investor Stockholders purchased 2,030,869 shares of
Series A Preferred Stock; and

     WHEREAS, as a condition to and in consideration of the Investor
Stockholders' purchase of Series A Preferred Stock, the Company, the Investor
Stockholders and the Stockholders entered into that certain Amended and Restated
Stockholders Agreement dated as of June 15, 2000 (the "Existing Agreement"); and

     WHEREAS, the Company and the Investor Stockholders have entered into the
IFX Corporation Preferred Stock Purchase Agreement, dated March __, 2001 (the
"Stock Purchase Agreement"), pursuant to which the Investor Stockholders will
purchase newly issued shares of Series B Preferred Stock; and

     WHEREAS, as a condition to and in consideration of the Investor
Stockholders' purchase of Series B Preferred Stock, the Company, the Investor
Stockholders and the Stockholders have agreed to amend and restate the Existing
Agreement in the manner set forth below.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained in this Agreement and for other valuable consideration the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

                                   ARTICLE I

                                  DEFINITIONS

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     SECTION 1.1    Certain Defined Terms.  As used herein, the following terms
                    ---------------------
shall have the following meanings:

     "Affiliate" of a specified Person shall mean (a) any Person that directly
or indirectly, through one or more intermediaries, controls, is controlled by,
or is under common control with, such specified Person, (b) in the case of a
natural Person, such Person's spouse, parent or lineal descendant (whether by
blood or adoption and including stepchildren), a trust primarily for the benefit
of such Person and the foregoing, (c) in the case of a trust any Person with
whom the beneficiaries of the Trust are Affiliates, or (d) in the case of UBS,
(i) any company under the direct or indirect control of UBS AG (a "UBS Group
Company") and/or any partnership or unincorporated association under the direct
or indirect control of any UBS Group Company which includes, without limiting
the generality of the foregoing, any limited partnership the general partner of
which is a UBS Group Company and any limited liability company the managing
member of which is a UBS Group Company, and (ii) any alternative investment
vehicle formed by either of the foregoing, or any other entity (x) in which UBS
AG directly or indirectly owns at least 20% of the equity interests and (y) is
advised or managed (whether pursuant to contract, as general partner, managing
member or otherwise) by an entity in which UBS AG has a direct or indirect
equity interest.  "Control" (including the terms "controlled by" and "under
                   -------                        -------------       -----
common control with") shall mean the possession, directly or indirectly, of the
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power to direct or cause the direction of the management policies of a Person,
whether through the ownership of voting securities, by contract or credit
arrangement, as trustee or executor, or otherwise.

     "Agent" has the meaning assigned to such term in Section 5.13.

     "as converted" has the meaning assigned to such term in Section 2.3.

     "beneficial owner" or "beneficially own" has the meaning given such term in
Rule 13d-3 under the Exchange Act and a Person's beneficial ownership of Common
Stock, Series A Preferred Stock or Series B Preferred Stock or other Voting
Securities of the Company shall be calculated in accordance with the provisions
of such Rule; provided, however, that for purposes of determining beneficial
ownership, (i) a Person shall be deemed to be the beneficial owner of any
security which may be acquired by such Person whether within 60 days or
thereafter, upon the conversion, exchange or exercise of any warrants, options,
rights or other securities and (ii) no Person shall be deemed to beneficially
own any security solely as a result of such Person's execution of this
Agreement.

     "Board" means the Board of Directors of the Company.

     "Bona Fide Purchaser" means, with respect to a proposed Transfer of Equity
Securities, any transferee of Equity Securities who or which (a) is not an
Affiliate of the Investor Stockholders and (b) has delivered a good faith
written offer to purchase Equity Securities.

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     "Business Day" means any day that is not a Saturday, a Sunday or other day
on which banks are required or authorized by law to be closed in New York City
on the city of Miami, Florida.

     "Buyer" has the meaning assigned to such term in Section 3.6.

     "Bylaws" means the Bylaws of the Company, as in effect on the date hereof
and as the same may be amended, supplemented or otherwise modified from time to
time in accordance with the terms thereof, the terms of the Certificate and the
terms of this Agreement.

     "Capital Stock" means, with respect to any Person at any time, any and all
shares, interests, participations or other equivalents (however designated,
whether voting or non-voting) of capital stock, partnership interests (whether
general or limited) or equivalent ownership interests in or issued by such
Person, and includes, in the case of the Company without limitation, any and all
shares of Common Stock, Series A Preferred Stock and Series B Preferred Stock.

     "Casty" has the meaning assigned to such term in the preamble.

     "Certificate" means the Certificate of Incorporation of the Company, as in
effect on the date hereof and as the same may be amended, supplemented or
otherwise modified from time to time in accordance with the terms thereof.

     "Closing" has the meaning assigned to such term in the Stock Purchase
Agreement.

     "Common Stock" means the common stock, par value $0.02 per share, of the
Company and any securities issued in respect thereof, or in substitution
therefor, in connection with any stock split, dividend or combination, or any
reclassification, recapitalization, merger, consolidation, exchange or other
similar reorganization.

     "control" (including the terms "controlled by" and "under common control
with"), with respect to the relationship between or among two or more Persons,
means the possession, directly or indirectly, of the power to direct or cause
the direction of the affairs or management of a Person, whether through the
ownership of voting securities, as trustee or executor, by contract or
otherwise.

     "Director" means any member of the Board.

     "Eidelstein" has the meaning assigned to such term in the preamble.

     "Equity Securities" means any and all shares of Capital Stock of the
Company, securities of the Company convertible into, or exchangeable or
exercisable for, such shares, and options, warrants or other rights to acquire
such shares.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended, or
any similar federal statute and the rules and regulations promulgated
thereunder.

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     "Family" means any spouse, lineal ancestor or descendant, brother or sister

     "Holder" means an Investor Stockholder and any other holder of Equity
Securities who or which is a permitted transferee of an Investor Stockholders
pursuant to Section 3.1(c).

     "Independent Director" has the meaning specified in Rule 4200(a)(14) of the
NASD listing standards, as in effect on the date hereof and as the same may be
amended or supplemented, or in any successor rule or regulation.

     "Independent Representative" has the meaning assigned to such term in
Section 2.1(a).

     "Investor Representative" has the meaning assigned to such term in Section
2.1(a).

     "ITI" has the meaning assigned to such term in the preamble.

     "Joint Representative" has the meaning assigned to such term in Section
2.1(a).

     "NASD" means the National Association of Securities Dealers, Inc.

     "Offer" has the meaning assigned to such term in Section 3.5(a).

     "Offered Shares" has the meaning assigned to such term in Section 3.5(a).

     "Permitted Sales" means the Transfers permitted in the first and second
sentences of Section 3.3(a) and the first sentence of Section 3.4(a).

     "Person" means any individual, corporation, limited liability company,
limited or general partnership, joint venture, association, joint-stock company,
trust, unincorporated organization, government or any agency or political
subdivisions thereof or any other entity.

     "Preferred Stock" means the Series A Preferred Stock and Series B Preferred
Stock.

     "Proposed Transferee" has the meaning assigned to such term in Section
3.5(a).

     "Pro Rata Fraction" has the meaning assigned to such term in Section
3.5(c).

     "Qualified Public Offering" has the meaning assigned to such term in the
Stock Purchase Agreement.

     "Registration Rights Agreement" has the meaning assigned to such term in
the Stock Purchase Agreement.

     "Representatives" has the meaning assigned to such term in Section 2.1(b).

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     "SEC" means the U.S. Securities and Exchange Commission or any other
federal agency then administering the federal securities laws.

     "Securities Act" has the meaning assigned to such term in Section 3.1.

     "Seller" has the meaning assigned to such term in Section 3.5(a).

     "Series A Certificate of Designation" means the Amended and Restated Series
A Certificate of Designation, Number, Powers, Preferences and Relative,
Participating and Other Rights of Series A Convertible Preferred Stock of the
Company in the form attached as Exhibit I to the Stock Purchase Agreement.

     "Series B Certificate of Designation" means the Certificate of Designation,
Number, Powers, Preferences and Relative, Participating and Other Rights of
Series B Convertible Preferred Stock of the Company in the form attached as
Exhibit B to the Stock Purchase Agreement.

     "Series A Preferred Stock" means the Series A Preferred Stock, par value
$1.00 per share, of the Company.

     "Series B Preferred Stock" means the Series B Preferred Stock, par value
$1.00 per share, of the Company.

     "Shalom" has the meaning assigned to such term in the preamble.

     "Stockholders" has the meaning assigned to such term in the preamble.

     "Stock Purchase Agreement" has the meaning assigned to such term in the
recitals.

     "Transfer" means, directly or indirectly, to sell, transfer, assign,
pledge, encumber, hypothecate or similarly dispose of, either voluntarily or
involuntarily, or to enter into any contract, option or other arrangement or
understanding with respect to the sale, transfer, assignment, pledge,
encumbrance, hypothecation or similar disposition of, any shares of Equity
Securities beneficially owned by a Person or any interest in any shares of
Equity Securities beneficially owned by a Person.

     "UBS" means (i) UBS Capital Americas III, L.P., a Jersey, Channel Island
Islands limited partnership, (ii) UBS Capital LLC, a Delaware limited liability
Company, and (iii) any Affiliate of UBS, individually and collectively.

     "Voting Securities" means, at any time, shares of any class of Equity
Securities of the Company which are then entitled to vote generally in the
election of Directors.

     SECTION 1.2   Other Definitional Provisions.
                   -----------------------------

          (a)  The words "hereof", "herein" and "hereunder" and words of similar
import when used in this Agreement shall refer to this Agreement as a whole and

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not to any particular provision of this Agreement, and Article and Section
references are to this Agreement unless otherwise specified.

          (b)  The meanings given to terms defined herein shall be equally
applicable to both the singular and plural forms of such terms.

                                  ARTICLE II

                             CORPORATE GOVERNANCE

     SECTION 2.1   Board Representation.
                   --------------------

          (a)  Effective on the date hereof, the Board shall be comprised of
seven (7) Directors of whom:  (i) three (3) shall be designees of the Investor
Stockholders (the "Investor Representatives"), (ii) one (1) shall be the
designee of ITI (the "ITI Representative"), (iii) one (1) shall be the designee
of Casty who shall be an Independent Director (the "Casty Representative"), (iv)
one (1) shall be jointly designated by ITI and Casty (the "Joint
Representative") and (v) one (1) shall be an Independent Director acceptable to
the Investor Stockholders, ITI and Casty (with such consents not to be
unreasonably withheld or delayed)  (the "Independent Representative") and who,
commencing with the election of Directors at the next annual meeting of
stockholders, has been elected by the holders of a majority of the outstanding
Voting Securities.  The initial Investor Representatives shall be Charles W.
Moore, Mark O. Lama and Charles Delaney, the initial ITI Representative shall be
Michael Shalom, the initial Casty Representative shall be ___________, the
initial Joint Representative shall be _____________ and the initial Independent
Representative shall be _____________.  If, at any time, ITI and Casty are
unable to agree upon the designation of the Joint Representative, the Joint
Representative shall be designated by Jose Leiman.  For purposes hereof, each of
the two Series A Preferred Directors (as defined in the Series A Certificate of
Designation) and the Series B Preferred Director (as defined in the Series B
Certificate of Designation) shall each count as one of the three Investor
Representatives.

          (b)  The Company shall take such action as may be required under
applicable law (i) to cause the Board to consist of the number of Directors
specified in clause (a), (ii) to include in the slate of nominees recommended by
the Board the Investor Representatives, the ITI Representative, the Casty
Representative, the Joint Representative and the Independent Representative
(collectively, the "Representatives"), and (iii) to cause the Representatives to
be duly appointed in accordance with the foregoing and, in the case of the
Investor Representatives, in accordance with the Series A Certificate of
Designation or the Series B Certificate of Designation, as the case may be.  The
Company agrees to use its reasonable best efforts to cause the election of the
Representatives to the Board, including nominating such individuals to be
elected as Directors as provided herein.

          (c)  Each of the Investor Stockholders and the Stockholders agrees to
vote, or act by written consent with respect to any Voting Securities
beneficially owned by him or it, at each annual or special meeting of the
stockholders of the Company at

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which Directors are to be elected or to take all actions by written consent in
lieu of any such meeting as are necessary to cause the Representatives
designated by the others in accordance with the terms of this Agreement to be
elected to the Board and agrees to use his or its reasonable best efforts to
cause the election of each such designee to the Board, including nominating such
individuals to be elected as Directors.

          (d)  In the event that a vacancy is created at any time by the death,
disability, retirement, resignation or removal (with or without cause) of any
Representative, the remaining Directors and the Company shall cause the vacancy
created thereby to be filled by a new designee of the party or parties that
designated such Director as soon as possible, who is designated in the manner
specified in this Section 2.1.  Each of the Company, Investor Stockholders and
the Stockholders hereby agrees to take, at any time and from time to time, all
actions necessary to accomplish the same.  Upon the written request of any party
who is entitled to designated a Representative, each of the Investor
Stockholders and Stockholders shall vote, or act by written consent with respect
to all Voting Securities beneficially owned by him or it and otherwise take or
cause to be taken all actions necessary to remove any Director designated by
such party.  Unless, any party who is entitled to designated a Representative
shall otherwise request in writing, none of the others shall take any action to
cause the removal of any Director designated by the former.

          (e)  Each of the Company, the Investor Stockholders and the
Stockholders agrees not to take any action that would cause the number of
Directors constituting the entire Board to be other than seven (7) without the
written consent of each other party.

          (f)  The covenants and agreements set forth herein shall be subject to
the fiduciary obligations of the Representatives now or hereafter serving on the
Board and shall not prevent the Representatives now or hereafter serving on the
Board from taking any action or refraining to take any action while acting in
the capacity as a Director of the Company.  The foregoing shall not limit the
obligations of the Investor Stockholders, ITI and Casty in their capacity as
stockholders of the Company hereunder.

     SECTION 2.2   Committees.  The Company shall, except as provided below, by
                   ----------
amending its Bylaws or otherwise, establish and maintain a Compensation
Committee and an Audit Committee of the Board which satisfies the requirements
of this Section. The Compensation Committee shall consist of two (2) Directors,
one (1) of whom shall be the Casty Representative and one (1) of whom shall be
the Independent Representative.  The Audit Committee shall consist of three (3)
Directors, one (1) of whom shall be an Investor Representative, one (1) of whom
shall be the Casty Representative and one (1) of whom shall be the Independent
Representative.  The Compensation Committee shall have responsibility for
compensation matters customarily addressed by compensation committees of
similarly situated companies and shall have the full power and authority of the
Board with respect thereto, except as limited by applicable law.  The Audit
Committee shall have responsibility for matters customarily addressed by audit
committees of similarly situated companies and shall have the full power and
authority of the Board with respect thereto, except as limited by applicable
law.  Notwithstanding anything to the contrary herein, the Investor Stockholders
and the

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Stockholders acknowledge and agree that the composition of the Compensation and
Audit Committees must satisfy any applicable rules and regulations of the SEC
and the NASD as in effect from time to time.

     SECTION 2.3   Termination of Rights.
                   ---------------------

          (a)  Except with respect to the rights of the Investor Stockholders as
provided in subparagraph (b) below, Sections 2.1 and 2.2 shall terminate upon a
Qualified Public Offering.

          (b)  The rights of the Investor Stockholders under Sections 2.1 and
2.2 (and the corresponding obligations of the Stockholders) shall survive a
Qualified Public Offering, provided that, at such time as the Investor
Stockholders and their Affiliates shall cease to own in the aggregate at least
25% of the number of shares of Common Stock (determined with respect to the
Preferred Stock and any other Equity Securities owned by the Investor
Stockholders and their Affiliates that are convertible into, or exchangeable or
exercisable for Common Stock, on an as-converted, exchanged or exercised basis
(any determination made in accordance with the foregoing shall hereinafter be
referred to as "as converted")) that the Investor Stockholders and such
Affiliates held as of the Closing (adjusted for stock splits, combinations,
stock dividends and the like), the Investor Stockholders shall cease to have the
right to designate Directors pursuant to Section 2.1 and members of the
Compensation Committee and Audit Committee pursuant to Section 2.2 and all other
rights of the Investor Stockholders or such Stockholder under this Article II
shall terminate.

                                  ARTICLE III

                                   TRANSFERS

     SECTION 3.1   Investor Stockholder Transfers.  Each Investor Stockholder
                   ------------------------------
hereby agrees that it shall not Transfer any shares of its Equity Securities,
unless such Transfer is effected through (a) a public offering registered under
the Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder (the "Securities Act"), (b) sales made pursuant to Rule
144 under the Securities Act, or any successor provisions or (c) a Transfer
otherwise permitted hereunder and in compliance herewith. Any Equity Securities
Transferred pursuant to clause (a) or (b) shall no longer be subject to this
Agreement.  Each transferee Holder under clause (c) shall agree in writing as a
condition to such Transfer, to be bound by all of the provisions of this
Agreement to the same extent as if such transferee were the transferring
Investor Stockholder, and all stock certificates representing shares transferred
to such transferee shall bear a legend providing notice of the restrictions
contained in this Agreement.

     SECTION 3.2   Stockholder Transfers.  Each Stockholder hereby agrees that
                   ---------------------
it shall not Transfer any shares of its Equity Securities, unless such Transfer
is effected through (a) a public offering registered under the Securities Act,
(b) sales made pursuant to Rule 144 under the Securities Act or any successor
provisions or (c) a Transfer otherwise permitted hereunder and in compliance
herewith. Any Equity Securities

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Transferred pursuant to clauses (a) or (b) shall no longer be subject to this
Agreement, except as provided herein. Each transferee under clause (c) shall
agree in writing as a condition to such Transfer, to be bound by all of the
provisions of this Agreement to the same extent as if such transferee were the
transferring Stockholder, and all stock certificates representing shares
transferred to such transferee shall bear a legend providing notice of the
restrictions contained in this Agreement.

     SECTION 3.3   Transfers by Eidelstein, ITI and Shalom.
                   ---------------------------------------

          (a)  ITI and Shalom agree that neither such Stockholder nor any of its
Affiliates shall Transfer more than 25,000 shares of Common Stock during any
calendar quarter, in each case, without the written consent of the Investor
Stockholders, which consent shall not be unreasonably withheld or delayed, or
without compliance with Sections 3.5 and 3.6; provided that Transfers by ITI and
Shalom shall be aggregated for purposes of the foregoing. Eidelstein hereby
agrees that neither he nor any of his Affiliates shall Transfer more than 25,000
shares of Common Stock during any calendar quarter without the written consent
of the Investor Stockholders, which consent shall not be unreasonably withheld
or delayed, or without compliance with Sections 3.5 and 3.6. Notwithstanding the
foregoing, Eidelstein, ITI or Shalom may Transfer all or any of their Equity
Securities (x) to any member of such Stockholder's Family or to any trust for
the benefit of any such Family member of such Stockholder or to any other
Affiliate (including, without limitation, the members of ITI), provided that any
such transferee shall agree in writing with the Company and the Investor
Stockholders as a condition to such Transfer, to be bound by all of the
provisions of this Agreement to the same extent as if such transferee were such
Stockholder, or (y) by will or the laws of descent and distribution; provided,
however, in such event each such transferee shall be bound by all of the
provisions of this Agreement to the same extent as if such transferee were such
Stockholder; and provided, further, that each such transferee shall execute an
irrevocable proxy appointing the original Stockholder (except in the case of
death of the original Stockholder) transferring such shares as proxy to vote all
such shares so transferred, such appointment shall be coupled with an interest,
and all stock certificates representing such shares shall bear a legend
providing notice of such appointment of proxy and the restrictions contained in
this Agreement.

          (b)  The Transfer restrictions contained in Section 3.3(a) shall
terminate upon the earlier of: (i) a Qualified Public Offering and (ii) the time
at which the Investor Stockholders and the other Holders own less than 20% of
the Common Stock (on an as converted basis) that the Investor Stockholders owned
as of the Closing.

     SECTION 3.4   Transfers by Casty.
                   ------------------

          (a)  Casty agrees that neither it nor any of its Affiliates shall
Transfer, during any calendar quarter, more than the number of Shares of Common
Stock permitted under Rule 144(e) of the Securities Act measured as of the last
day of such calendar quarter plus 50% of the number of Shares of Common Stock
which were eligible for sale (but not sold under this Section 3.4(a)) during the
preceding calendar quarters (beginning with the calendar quarter ending
________, 2001), without the written consent of the Investor Stockholders, which
consent shall not be unreasonably withheld or delayed, or

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without compliance with Sections 3.5 and 3.6. Notwithstanding the foregoing,
Casty may Transfer all or any of his Equity Securities (x) to any member of such
Stockholder's Family, to any trust for the benefit of any such Family member of
such Stockholder or to any other Affiliate, provided that any such transferee
shall agree in writing as a condition to such Transfer, to be bound by all of
the provisions of this Agreement to the same extent as if such transferee were
such Stockholder, or (y) by will or the laws of descent and distribution;
provided, however, in such event each such transferee shall be bound by all of
the provisions of this Agreement to the same extent as if such transferee were
such Stockholder; and provided, further, that each such transferee shall execute
an irrevocable proxy appointing Joel Eidelstein as proxy to vote all such shares
so transferred, such appointment shall be coupled with an interest, and all
stock certificates representing such shares shall bear a legend providing notice
of such appointment of proxy and the restrictions contained in this Agreement.

          (b)  The Transfer restrictions contained in Section 3.4(a) shall
terminate upon the earlier of: (i) a Qualified Public Offering and (ii) the time
at which the Investor Stockholders and the other Holders own less than 20% of
the Common Stock (on an as converted basis) that the Investor Stockholders owned
as of the Closing.

     SECTION 3.5   Right of First Refusal on Certain Transfers.
                   -------------------------------------------

          (a)  If at any time a Stockholder or any of his/its Affiliates, other
than the Company, desires to Transfer all or any part of their Equity Securities
(other than pursuant to Permitted Sales) to any Person (the "Proposed
Transferee"), such Stockholder (the "Seller") shall, except as provided below,
submit a written offer (the "Offer") to sell such Equity Securities (the
"Offered Shares"), first to the Company, and second to the Holders, on the same
terms and conditions on which the Seller proposes to sell such Offered Shares to
the Proposed Transferee.  The parties acknowledge and agree that any Transfer
described in the last sentence of Sections 3.3(a) and 3.4(a) shall not be
subject to the terms of this Section.  The Offer shall disclose the identity of
the Proposed Transferee, the Offered Shares proposed to be sold, the terms and
conditions, including price, of the proposed sale, and any other material facts
relating to the proposed sale.  The Offer shall further state that the Company
and the Holders may acquire, in accordance with the provisions of this
Agreement, all or any portion of the Offered Shares for the price and upon the
other terms and conditions, including deferred payment (if applicable), set
forth therein.

          (b)  Upon receipt of the Offer, if the Company desires to purchase all
or any part of the Offered Shares, the Company shall communicate in writing its
election to purchase to the Seller, which communication shall state the number
of Offered Shares the Company desires to purchase and shall be given to the
Seller in accordance with Section 5.4 below within thirty (30) days of the date
the Offer was made.  Such notice shall, when taken in conjunction with the
Offer, be deemed to constitute a valid, legally binding and enforceable
agreement for the sale to, and purchase by, the Company of the number of Offered
Shares specified by the Company in such notice and on the terms of the Offer.
Sales of the Offered Shares to be sold to the Company pursuant to this Section
3.5(b) shall be made at the offices of the Company on the 45th day following the

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date the Offer was made (or if such 45th day is not a Business Day, then on the
next succeeding Business Day).  Such sales shall be effected by the Seller's
delivery to the Company of a certificate or certificates evidencing the Offered
Shares to be purchased by it, duly endorsed for transfer to the Company, against
payment to the Seller of the purchase price therefor by the Company.

          (c)  Each Holder shall, subject to the prior purchase right of the
Company, have the absolute right to purchase that number of Offered Shares not
purchased by the Company as shall be equal to the number of Offered Shares not
purchased by the Company multiplied by a fraction, the numerator of which shall
be the number of shares of Common Stock (determined on an as converted basis)
then owned by such Holder and the denominator of which shall be the aggregate
number of shares of Common Stock (determined on an as converted basis) then
owned by all of the Holders.  The amount of Offered Shares that each Holder is
entitled to purchase under this Section 3.5(c) shall be referred to as its "Pro
Rata Fraction."  The Holders shall have a right of oversubscription such that if
any Holder fails to accept the Offer as to its Pro Rata Fraction, the other
Holders shall, among them, have the right to purchase up to the balance of the
Offered Shares not so purchased.  Such right of oversubscription may be
exercised by a Holder by accepting the Offer as to more than its Pro Rata
Fraction.  If, as a result thereof, such oversubscriptions exceed the total
number of Offered Shares available in respect of such oversubscription
privilege, the oversubscribing Holders shall be cut back with respect to their
oversubscriptions on a pro rata basis in accordance with their respective Pro
Rata Fractions or as they may otherwise agree among themselves.  If a Holder
desires to purchase all or any portion of the Offered Shares, said Holder shall
communicate in writing its election to purchase to the Seller and the Company,
which communication shall state the number of Offered Shares said Holder desires
to purchase and shall be given to the Seller in accordance with Section 5.4
below within thirty (30) days of the date the Offer was made.  Such
communication shall, when taken in conjunction with the Offer, be deemed to
constitute a valid, legally binding and enforceable agreement for the sale and
purchase of such Offered Shares (subject to the aforesaid limitations as to a
Holder's right to purchase more than its Pro Rata Fraction) and on the terms of
the Offer.  Sales of the Offered Shares to be sold to purchasing Holders
pursuant to this Section 3.5(c) shall be made at the offices of the Company on
the later of (i) the 45th day following the date the Offer was made (or if such
later of (i) the 45th day is not a Business Day, then on the next succeeding
Business Day) and (ii) the third Business Day following receipt of all material
governmental or other consents in connection with such sale.  Such sales shall
be effected by the Seller's delivery to each purchasing Holder of a certificate
or certificates evidencing the Offered Shares to be purchased by it, duly
endorsed for transfer to such purchasing Holder, against payment to the Seller
of the purchase price therefor by such purchasing Holder.

          (d)  If the Holders and the Company do not purchase in the aggregate
all of the Offered Shares, the Offered Shares not so purchased may be sold by
the Seller at any time within 90 days after the date the Offer was made, subject
to the provisions of Section 3.6 hereof.  Any such sale shall be to the Proposed
Transferee, at the price and upon the other terms and conditions specified in
the Offer.  Any Offered Shares not sold within such 90-day period shall continue
to be subject to the requirements of a prior offer

                                      11
<PAGE>

pursuant to this Section 3.5. If Offered Shares are sold pursuant to this
Section 3.5 to any purchaser who is not a party to this Agreement, the Offered
Shares so sold shall no longer be subject to this Agreement.

          (e)  The provisions of this Section 3.5 shall terminate upon the
earlier of: (i) a Qualified Public Offering and (ii) the time at which the
Investor Stockholders and the other Holders own less than 20% of the Common
Stock (on an as converted basis) that the Investor Stockholders owned as of the
Closing.

     SECTION 3.6   Right of Participation in Sales by Stockholders.
                   -----------------------------------------------

          (a)  If at any time any of the Stockholders (the "Tag-Along Seller")
desires to Transfer all or any part of the Equity Securities (other than
pursuant to Permitted Sales) owned by such Tag-Along Seller to any Person other
than Investor Stockholders (including the other Holders) (the "Buyer"), the
Investor Stockholders shall, except as provided below, have the right to sell to
the Buyer, as a condition to such sale by Tag-Along Seller, at the same price
per share and on the same terms and conditions as involved in such sale by the
Tag-Along Seller, a number of shares of Common Stock (on an as converted basis)
equal to the number derived from multiplying the total number of shares of
Common Stock (on an as converted basis) proposed to be sold by the Tag-Along
Seller by a fraction, the numerator of which is the total number of shares of
Common Stock (on an as converted basis) held by the Investor Stockholders and
the denominator of which is the total number of shares of Common Stock (on an as
converted basis) held by the Tag-Along Seller and the Investor Stockholders
(including the other Holders).  The parties acknowledge and agree that any
Transfer described in the last sentence of Sections 3.3(a) and 3.4 (a) shall not
be subject to the terms of this Section.

          (b)  Each Investor Stockholder wishing to so participate in any sale
under this Section 3.6 shall notify the Tag-Along Seller in writing of such
intention within twenty (20) days after the date of their receipt of the Offer.

          (c)  The Tag-Along Seller and each participating Investor Stockholder
shall sell to the Buyer all, or at the option of the Buyer any part, of the
Equity Securities proposed to be sold by them at the price and upon other terms
and conditions contained in the Offer provided by the Tag-Along Seller under
Section 3.5 above; provided, however, that any purchase of less than all of such
Equity Securities by the Buyer shall be made from the Tag-Along Seller and each
participating Investor Stockholder pro rata based upon the relative amount of
the Equity Securities that the Tag-Along Seller and each participating Investor
Stockholder is otherwise entitled to sell pursuant to Section 3.6(a).

          (d)  The provisions of this Section 3.6 shall terminate upon a
Qualified Public Offering.

     SECTION 3.7   Right of Participation in Sales by Investor Stockholders.
                   --------------------------------------------------------

          (a)  If at any time the Investor Stockholders desire to Transfer at
least 40% of the Equity Securities owned in the aggregate by them and their
Affiliates to any

                                      12
<PAGE>

Person other than an Affiliate of the Investor Stockholders (the "Tag-Along
Purchaser"), each of the other Stockholders, shall have the right to sell to the
Tag-Along Purchaser, as a condition to such sale by the Investor Stockholders,
at the price per share and on the terms and conditions applicable to the Common
Stock set forth in the Tag-Along Purchaser's offer to the Investor Stockholders
(the "Tag-Along Purchase Offer"), a number of shares of Common Stock equal to
the number derived from multiplying the total number of shares of Common Stock
(on an as converted basis) proposed to be sold by the Investor Stockholders by a
fraction, the numerator of which is the total number of shares of Common Stock
(on an as converted basis) held by such Stockholder and the denominator of which
is the total number of shares of Common Stock (on an as converted basis) held by
all Stockholders and the Investor Stockholders.

          (b)  Each Stockholder wishing to so participate in any sale under this
Section 3.7 shall notify the Agent in writing of such intention within twenty
(20) days after the date such Stockholder's receipt of the Tag-Along Purchase
Offer.

          (c)  The Investor Stockholders and each participating Stockholder
shall sell to the Tag-Along Purchaser all, or at the option of the Tag-Along
Purchaser any part, of the Equity Securities proposed to be sold by them at the
price per share and on the terms and conditions as set forth with respect to
each class and series of Capital Stock in the Tag-Along Purchaser Offer;
provided, however, that any purchase of less than all of such Equity Securities
by the Tag-Along Purchaser shall be made from the Investor Stockholders and each
participating Stockholder pro rata based upon the relative amount of the Equity
Securities that the Investor Stockholder (including the other Holders) and each
participating Stockholder is otherwise entitled to sell pursuant to Section
3.7(a).

          (d)  The provisions of this Section 3.7 shall terminate upon a
Qualified Public Offering.

     SECTION 3.8   Drag-Along Rights.
                   -----------------

          (a)  Subject to Section 3.8(c) hereof, if the Investor Stockholders
(collectively, the "Drag-Along Transferor") approve a sale of (i)  a majority of
the outstanding shares of Common Stock on an as converted basis to a Bona Fide
Purchaser or (ii) all or substantially all of the assets of the Company to a
Bona Fide Purchaser (each an "Approved Sale"), whether by way of merger,
consolidation, sale of stock or assets, or otherwise, all Stockholders shall
consent to and raise no objections against the Approved Sale, and if the
Approved Sale is structured as (A) a merger or consolidation of the Company or a
subsidiary, or a sale of all or substantially all of the assets of the Company
or a subsidiary, each Stockholder shall waive any dissenters rights, appraisal
rights or similar rights in connection with such merger, consolidation or asset
sale, or (B) a sale of a majority of the outstanding shares of Common Stock on
an as converted basis the Stockholders shall agree to sell their respective
proportionate percentages of the Common Stock on an as converted basis which are
the subject of the Approved Sale, on the same terms and conditions as applicable
to the Common Stock of the Drag-Along Transferor.  The Stockholders shall take
all actions reasonably requested by the Drag Along Transferor in connection with
the consummation of the Approved Sale, including the execution of all agreements
and such instruments and other actions requested by the Drag

                                      13
<PAGE>

Along Transferor to provide the representations, warranties, indemnities,
covenants, conditions, agreements, escrow agreements and other provisions and
agreements relating to such Approved Sale; provided, however, that each
                                           --------  -------
participating Stockholder's liability under any such agreement or instrument
shall be limited to his/her/its proportionate percentage of such liability
(based on the number of shares of Common Stock on an as converted basis held by
such Stockholder which are subject to the Approved Sale) and shall not exceed
the proceeds received by such Stockholder. The Stockholders shall be permitted
to sell their Equity Securities pursuant to an Approved Sale without complying
with the provisions of Sections 3.1, 3.2, 3.3, 3.4, 3.5, 3.6 and 3.7 of this
Agreement.

          (b)  If the Company and/or the Drag-Along Transferor or their
representatives, enter into any negotiation or transaction for which Regulation
D under the Securities Act (or any similar rule or regulation then in effect)
may be available with respect to such negotiation or transaction (including a
merger, consolidation or other reorganization), each Stockholder who is not an
accredited investor (as such term is defined in Rule 501 under the Securities
Act) will, at the request of the Company or the Drag Along Transferor, appoint a
purchaser representative (as such term is defined in Rule 501 under the
Securities Act) reasonably acceptable to the Company and such Drag Along
Transferor.

          (c)  At the closing of the Approved Sale, each of the Stockholders
shall (a) execute any documents or instruments reasonably requested by the Bona
Fide Purchaser, and (b) deliver to the Bona Fide Purchaser certificates for the
Equity Securities, duly endorsed or accompanied by duly executed stock
assignments separate from certificate, free and clear of all encumbrances (other
than those created pursuant to this Agreement), against delivery by the Bona
Fide Purchaser of the consideration (including a certified check for the cash
portion of such consideration) for the total sales price of the Equity
Securities being sold by such Stockholder.

          (d)  The provisions of this Section 3.8 shall terminate upon
consummation of a Qualified Public Offering.

                                  ARTICLE IV

                        APPROVAL RIGHTS OF STOCKHOLDERS

     SECTION 4.1   Stockholder Approval Rights. The Company shall not (and the
                   ---------------------------
Investor Stockholders shall not take any action to cause the Company to) take
any action to (i) enter into any transaction, or any agreement or understanding
with the Investor Stockholders or any Affiliate of the Investor Stockholders
(other than with respect to a Transfer of Equity Securities or as contemplated
by this Agreement, the Stock Purchase Agreement or the Transaction Documents (as
defined in the Stock Purchase Agreement)) or (ii) amend, modify, change or alter
the Company's Certificate of Incorporation or By-Laws or the Series A
Certificate of Designation or the Series B Certificate of Designation in a
manner adverse to the Company or holders of Common Stock, without the written
consent of the Stockholders holding a majority of the Common Stock, on an as
converted

                                      14
<PAGE>

basis, held by all Stockholders which consent shall not be unreasonably withheld
or delayed.

                                   ARTICLE V

                                 MISCELLANEOUS

     SECTION 5.1   Termination.  Except as otherwise provided herein, the
                   -----------
provisions of this Agreement shall terminate:  (a) upon the agreement of all of
the parties hereto, (b) with respect to any of the Stockholders (other than
Eidelstein) and their respective permitted transferees referred to in the last
sentence of Section 3.3(x) or Section 3.4, as the case may be, when such
Stockholder together with its permitted transferees owns less than 1.25% of the
outstanding Common Stock (on an as converted basis) and (c) with respect to
Eidelstein and his permitted transferees referred to in the last sentence of
Section 3.3, when Eidelstein's employment with the Company is terminated.

     SECTION 5.2   Amendments and Waivers.  Except as otherwise provided
                   ----------------------
herein, no modification, amendment or waiver of any provision of this Agreement
shall be effective against the Company or any other party unless such
modification, amendment or waiver is approved in writing by the Company, the
Agent, acting on behalf of the Investor Stockholders, and the Stockholders. The
failure of any party to enforce any of the provisions of this Agreement shall in
no way be construed as a waiver of such provisions and shall not affect the
right of such party thereafter to enforce each and every provision of this
Agreement in accordance with its terms.

     SECTION 5.3   Successors, Assigns and Transferees.  This Agreement shall
                   -----------------------------------
bind and inure to the benefit of and be enforceable by the parties hereto and
their respective heirs, personal representatives, successors and permitted
assigns. This Agreement may not be assigned by any party hereto without the
prior written consent of the other parties, except as otherwise provided herein.

     SECTION 5.4   Notices.  All notices required or permitted hereunder shall
                   -------
be in writing and shall be deemed effectively given: (a) upon personal delivery
to the party to be notified; (b) when sent by confirmed facsimile if sent during
normal business hours of the recipient, if not, then on the next business day;
(c) five (5) days after having been sent by registered or certified mail, return
receipt requested, postage prepaid; or (d) one (1) business day after deposit
with a nationally recognized overnight courier, specifying next day delivery,
with written verification of receipt. All communications shall be sent, with
respect to the Company and the Investor Stockholders, to their respective
addresses specified in the Stock Purchase Agreement (or at such other address as
any such party may specify by like notice) and, with respect to any other party,
to the address of such party as shown in the stock record books of the Company
(or at such other address as any such party may specify to all of the above by
like notice).

     SECTION 5.5   Further Assurances.  At any time or from time to time after
                   ------------------
the date hereof, the parties agree to cooperate with each other, and at the
request of any other

                                      15
<PAGE>

party, to execute and deliver any further instruments or documents and to take
all such further action as the other party may reasonably request in order to
evidence or effectuate the consummation of the transactions contemplated hereby
and otherwise to carry out the intent of the parties hereunder.

  SECTION 5.6  Entire Agreement. Except as otherwise expressly set forth herein,
               ----------------
this document, the Stock Purchase Agreement and the Registration Rights
Agreement embody the complete agreement and understanding among the parties
hereto with respect to the subject matter hereof and supersede and preempt any
prior understandings, agreements or representations by or among the parties,
written or oral, that may have related to the subject matter hereof in any way.

  SECTION 5.7  Delays or Omissions. It is agreed that no delay or omission to
               -------------------
exercise any right, power or remedy accruing to any party, upon any breach,
default or noncompliance by another party under this Agreement, shall impair any
such right, power or remedy, nor shall it be construed to be a waiver of any
such breach, default or noncompliance, or any acquiescence therein, or of or in
any similar breach, default or noncompliance thereafter occurring. It is further
agreed that any waiver, permit, consent or approval of any kind or character on
the part of any party hereto of any breach, default or noncompliance under this
Agreement or any waiver on such party's part of any provisions or conditions of
this Agreement, must be in writing and shall be effective only to the extent
specifically set forth in such writing. All remedies, either under this
Agreement, by law, or otherwise afforded to any party, shall be cumulative and
not alternative.

  SECTION 5.8  Governing Law; Jurisdiction; Waiver of Jury Trial. This Agreement
               -------------------------------------------------
shall be governed by and construed and enforced in accordance with the internal
laws of the State of New York without regard to the principles of conflicts of
law thereof. Each party hereto hereby irrevocably submits to the nonexclusive
jurisdiction of the courts of the state of New York and of the United States of
America sitting in the City of New York, Borough of Manhattan, for the
adjudication of any dispute hereunder or in connection herewith or with any
transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, that
the venue thereof may not be appropriate, that such suit, action or proceeding
is improper or that this Agreement or any of the documents referred to in this
Agreement may not be enforced in or by said courts, and each party hereto
irrevocably agrees that all claims with respect to such suit, action or
proceeding may be heard and determined in such a New York state or federal
court. Each party hereby irrevocably waives personal service of process and
consents to process being served in any such suit, action or proceeding by
mailing a copy thereof to such party in the manner provided in Section 12(b) of
the Stock Purchase Agreement and agrees that such service shall constitute good
and sufficient service of process and notice thereof. Nothing contained herein
shall be deemed to limit in any way any right to serve process in any manner
permitted by law. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE,
AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE
HEREUNDER OR IN CONNECTION HEREWITH OR ARISING OUT OF THIS AGREEMENT OR ANY
TRANSACTION CONTEMPLATED HEREBY.

                                      16
<PAGE>

  SECTION 5.9  Severability. Whenever possible, each provision of this Agreement
               ------------
shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be invalid,
illegal or unenforceable in any respect under any applicable law or rule in any
jurisdiction, such invalidity, illegality or unenforceability shall not affect
any other provision or any other jurisdiction, but this Agreement shall be
reformed, construed and enforced in such jurisdiction as if such invalid,
illegal or unenforceable provision had never been contained herein.

  SECTION 5.10 Enforcement. Each party hereto acknowledges that money damages
               -----------
would not be an adequate remedy in the event that any of the covenants or
agreements in this Agreement are not performed in accordance with its terms, and
it is therefore agreed that in addition to and without limiting any other remedy
or right it may have, the non-breaching party will have the right to an
injunction, temporary restraining order or other equitable relief in any court
of competent jurisdiction enjoining any such breach and enforcing specifically
the terms and provisions hereof.

  SECTION 5.11 Titles and Subtitles. The titles of the sections and subsections
               --------------------
of this Agreement are for convenience of reference only and are not to be
considered in construing this Agreement

  SECTION 5.12 Legend. Each certificate evidencing any of the shares of Equity
               ------
Securities held by the parties hereto shall bear a legend substantially as
follows:

        "THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT
        TO THE TERMS ANDCONDITIONS OF THE SECOND AMENDED AND RESTATED
        STOCKHOLDERS AGREEMENT, DATED AS OF __________, 2001, AS THE
        SAME MAY BE AMENDED, A COPY OF WHICH THE COMPANY WILL FURNISH
        TO THE HOLDER OF THIS CERTIFICATE UPON REQUEST AND WITHOUT
        CHARGE."

  SECTION 5.13 Appointment of Agent. Each of the Investor Stockholders hereby
               --------------------
irrevocably appoints UBS (the "Agent") to act as its true and lawful agent and
attorney-in-fact and representative with full power and authority in its name,
place and stead to act on its behalf for all purposes under this Agreement. The
foregoing power of attorney is hereby declared to be irrevocable and coupled
with an interest, and such appointment includes, among other powers, the power
and authority to exercise all rights and privileges, and to discharge all
obligations, of the Investor Stockholders under this Agreement, including:

          (a)  designating and removing the Investor Representatives and
otherwise taking all actions required to be taken by the Investor Stockholders
under Article II, including providing consents;

          (b)  providing consents to Transfers under Section 3.3;

                                      17
<PAGE>

          (c)  giving and receiving notices hereunder and service of process in
any legal action or other proceedings arising out of or related to this
Agreement and the transactions hereby; and

          (d)  amending or waiving the provisions of this Agreement.

Any instructions given by the Agent hereunder shall be validly given on behalf
of each of the Investor Stockholders, and the Company shall have the right to
rely thereon. UBS hereby accepts the appointment provided for in this Agreement
and agrees to be bound by the provisions of this Agreement. All decisions and
actions by the Agent shall be binding upon each of the Investor Stockholders and
no Investor Stockholders shall have the right to object, dissent, protest or
otherwise contest the same. The Company may conclusively rely upon any action
taken by the Agent hereunder.

  SECTION 5.14 Termination of Joint Venture Agreement. By its execution hereof,
               --------------------------------------
each of the Company, ITI, Emerging Networks, Inc. and Casty confirms that the
Subscription and Joint Venture Agreement, dated as of November 23, 1998, as
amended, by and among the Company, Emerging Networks, Inc., ITI and Casty was
terminated as of June 15, 2000.

  SECTION 5.15 Stockholder's Representation.
               ----------------------------

          (a)  Each of the Stockholders severally (and not jointly) represents
and warrants that all of the Equity Securities owned by it/him and any of
its/his Affiliates is set forth on Exhibit A hereto and that each such
                                   ---------
Stockholder or it/his Affiliate owns such Equity Securities listed opposite
its/his/their name free and clear of all Encumbrances (as defined in the Stock
Purchase Agreement) except with respect to Casty, an option to purchase 100,000
shares of the Common Stock owned by Casty at a price of $.625 per share has been
issued to Burton Meyer, a copy of which is attached hereto as Exhibit B.
                                                              ---------

          (b)  Each of Shalom and ITI severally (and not jointly) represents and
warrants that Shalom controls the voting and disposition rights on all shares of
Equity Securities owned by ITI or any of ITI's Affiliates.

  SECTION 5.16 Counterparts; Facsimile Signatures. This Agreement may be
               ----------------------------------
executed in any number of counterparts, each of which shall be an original, but
all of which together shall constitute one instrument. This Agreement may be
executed by facsimile signature(s).

                 [Remainder of Page Intentionally Left Blank]

                                      18
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed the SECOND AMENDED AND
RESTATED STOCKHOLDERS AGREEMENT as of the date set forth in the first paragraph
hereof.

                              IFX CORPORATION

                              By:   ____________________________________
                                    Name:
                                    Title:

                              UBS CAPITAL AMERICAS III, L.P.

                              By:  UBS Capital Americas III, LLC

                                    By:  _______________________________
                                         Name:
                                         Title:

                                    By:  _______________________________
                                         Name:
                                         Title:

                              UBS CAPITAL LLC

                              By:   ____________________________________
                                    Name:
                                    Title:

                              By:   ____________________________________
                                    Name:
                                    Title:

                              INTERNATIONAL TECHNOLOGY
                              INVESTMENTS, LC

                              By:   ____________________________________
                                    Name:
                                    Title:

                                      19
<PAGE>

                                   __________________________________
                                   Joel Eidelstein

                                   __________________________________
                                   Michael Shalom

                                   CASTY GRANTOR SUBTRUST

                                   By:_________________________________
                                      Name:
                                      Title:

The provisions of Section 5.14 of
this Agreement are hereby acknowledged
and agreed to.

EMERGING NETWORKS, INC.

By: __________________________
    Name:
    Title:

                                      20
<PAGE>

                                   EXHIBIT A
                                   ---------

       Equity Securities Ownership by Stockholders and their Affiliates

See Attachment hereto.

                        [To Be Prepared By The Company]

                                      21
<PAGE>

                                   EXHIBIT B
                                   ---------

                                    Option

See Attachment hereto.

                                      22<PAGE>

                                                                    Exhibit 10.2

                                                                 EXECUTION COPY
                                                                 --------------

                     ____________________________________

                                IFX CORPORATION

                              PURCHASE AGREEMENT

                     Series B Convertible Preferred Stock
                     ____________________________________

                           Dated as of March 13, 2001
<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                          Page
                                                                          ----
<S>                                                                       <C>
1.   Authorization of the Securities; Nature of Agreement................   1
     ----------------------------------------------------
     (a)    Series B Preferred Stock.....................................   1
            ------------------------
     (b)    Nature of Agreement..........................................   2
            -------------------

2.   Sale and Purchase of Series B Preferred Stock.......................   2
     ---------------------------------------------

3.   [Intentionally Omitted].............................................   2
      ---------------------

4.   Representations and Warranties of the Company.......................   2
     ---------------------------------------------
     (a)    Organization and Good Standing...............................   2
            ------------------------------
     (b)    Authorization................................................   3
            -------------
     (c)    Capital Stock................................................   3
            -------------
     (d)    Subsidiaries.................................................   4
            ------------
     (e)    Compliance With Material Instruments.........................   5
            ------------------------------------
     (f)    Good Title...................................................   5
            ----------
     (g)    Litigation...................................................   5
            ----------
     (h)    Tax Matters..................................................   6
            -----------
     (i)    Registration Rights..........................................   6
            -------------------
     (j)    Offering.....................................................   6
            --------
     (k)    Insurance....................................................   6
            ---------
     (l)    Certain Transactions.........................................   7
            --------------------
     (m)    Contracts....................................................   7
            ---------
     (n)    Governmental Consents........................................   9
            ---------------------
     (o)    Officers, Employees and Labor................................   9
            -----------------------------
     (p)    Compliance with Laws.........................................  11
            --------------------
     (q)    Intellectual Property........................................  11
            ---------------------
     (r)    Environmental Matters........................................  12
            ---------------------
     (s)    Certain Practices............................................  12
            -----------------
     (t)    Brokers......................................................  13
            -------
     (u)    No Undisclosed Liabilities...................................  13
            --------------------------
     (v)    Disclosure...................................................  13
            ----------
     (w)    SEC Filings..................................................  13
            -----------
     (x)    Financial Statements.........................................  13
            --------------------
     (y)    Availability and Transfer of Foreign Currency................  14
            ---------------------------------------------
     (z)    Absence of Changes...........................................  14
            ------------------
     (aa)   Real Property Holding Company................................  15
            -----------------------------
     (bb)   Investment Company Act.......................................  15
            ----------------------
     (cc)   Subchapter S.................................................  15
            ------------
     (dd)   State Takeover Statutes......................................  15
            -----------------------
</TABLE>

                                       i
<PAGE>

<TABLE>
<CAPTION>
                                                                          Page
                                                                          ----

<S>                                                                       <C>
5.   Representations and Warranties of the Purchasers....................   16
     ------------------------------------------------
     (a)    Investment Intent............................................   16
            -----------------
     (b)    Sophistication...............................................   16
            --------------
     (c)    Illiquidity..................................................   16
            -----------
     (d)    Accredited Investor..........................................   16
            -------------------
     (e)    Brokers......................................................   16
            -------
     (g)    Requisite Power and Authority................................   16
            -----------------------------
     (h)    No Conflict..................................................   16
            -----------

6.   Covenants...........................................................   17
     ---------
     (a)    Pre-Closing Actions..........................................   17
            -------------------
     (b)    Covenants Pending Closing....................................   17
            -------------------------
     (c)    Stockholder Approval; Information Statement..................   17
            -------------------------------------------
     (d)    No Solicitation..............................................   18
            ---------------
     (e)    Books and Records............................................   18
            -----------------
     (f)    Post-Closing Covenants.......................................   18
            ----------------------
     (g)    Inspection Rights............................................   19
            -----------------

7.   Conditions to Obligations of the Purchasers.........................   20
     -------------------------------------------
     (a)    Representations and Warranties...............................   20
            ------------------------------
     (b)    Performance..................................................   20
            -----------
     (c)    Absence of Litigation........................................   20
            ---------------------
     (d)    Opinion of Counsel to the Company and Subsidiaries...........   20
            --------------------------------------------------
     (e)    Consents.....................................................   20
            --------
     (f)    Assignment of Intellectual Property..........................   21
            -----------------------------------
     (g)    Contemporaneous Transactions.................................   21
            ----------------------------
     (h)    Closing Papers...............................................   22
            --------------
     (i)    Absence of Material Adverse Effect...........................   23
            ----------------------------------
     (j)    Proceedings..................................................   23
            -----------
     (k)    Legends......................................................   23
            -------
     (l)    Private Equity Fee...........................................   23
            ------------------

8.   Conditions to the Obligations of the Company........................   23
     --------------------------------------------
     (a)    Representations and Warranties...............................   23
            ------------------------------
     (b)    Performance..................................................   23
            -----------

9.   Survival............................................................   24
     --------

10.  Termination.........................................................   24
     -----------

11.  Effect of Termination...............................................   24
     ---------------------

12.  Miscellaneous Provisions............................................   24
     ------------------------
</TABLE>

                                      ii
<PAGE>

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
    <S>    <C>                                                              <C>
     (a)    Acknowledgment................................................... 24
            --------------
     (b)    Notices.......................................................... 24
            -------
     (c)    Severability..................................................... 25
            ------------
     (d)    Governing Law.................................................... 25
            -------------
     (e)    Publicity........................................................ 26
            ---------
     (f)    Captions and Section Headings.................................... 26
            -----------------------------
     (g)    Amendments and Waivers........................................... 26
            ----------------------
     (h)    Successors and Assigns........................................... 26
            ----------------------
     (i)    Expenses......................................................... 26
            --------
     (j)    Entire Agreement................................................. 27
            ----------------
     (k)    Exhibits......................................................... 27
            --------
     (l)    Further Assurances............................................... 27
            ------------------
     (m)    Condition to Effectiveness....................................... 27
            --------------------------
     (n)    Counterparts..................................................... 27
            ------------
     (o)    Attorneys' Fees.................................................. 27
            ---------------
     (p)    Disclosure Generally............................................. 27
            --------------------

13.  Definitions............................................................. 27
     -----------
     (a)    Definitions...................................................... 27
            -----------
     (b)    Other Definitional Provisions.................................... 33
            -----------------------------
</TABLE>

<TABLE>
<CAPTION>
                                   EXHIBITS
<S>        <C>                                                              <C>
EXHIBIT A   SCHEDULE OF PURCHASERS.......................................... A-1

EXHIBIT B   CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS OF SERIES B
            PREFERRED STOCK OF IFX CORPORATION.............................. B-1

EXHIBIT C   SCHEDULE OF EXCEPTIONS.......................................... C-1

EXHIBIT D   FORM OF OPINION OF COMPANY COUNSEL.............................. D-1

EXHIBIT E   FORM OF SECOND AMENDED AND RESTATED STOCKHOLDERS AGREEMENT...... E-1

EXHIBIT F   FORM OF AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT...... F-1

EXHIBIT G   FORM OF TUTOPIA STOCK PURCHASE AGREEMENT........................ G-1

EXHIBIT H   FORM OF PERFORMANCE-BASED OPTION PLAN........................... H-1
</TABLE>

                                      iii
<PAGE>

<TABLE>
<CAPTION>
<S>        <C>                                                              <C>
EXHIBIT I   AMENDED AND RESTATED CERTIFICATE OF DESIGNATION, PREFERENCES AND
            RIGHTS OF SERIES A PREFERRED STOCK OF IFX CORPORATION........... I-1

EXHIBIT J   FORM OF AMENDMENT TO THE 1998 OPTION PLAN....................... J-1
</TABLE>

                                      iv
<PAGE>

                                IFX CORPORATION

                              PURCHASE AGREEMENT

     This Purchase Agreement is made and entered into as of the 13th day of
March, 2001, by and among IFX Corporation, a Delaware corporation (the
"Company") and each Person listed on the Schedule of Purchasers attached as
 -------
Exhibit A hereto (the "Schedule of Purchasers") who executes this Agreement as a
---------              ----------------------
Purchaser (such Persons are referred to in this Agreement, collectively, as the
"Purchasers" and individually, as a "Purchaser") and International Technology
 ----------                          ---------
Investments, LC, a Nevada limited liability company ("ITI"), Michael Shalom,
individually ("Shalom"), Joel Eidelstein, individually ("Eidelstein"), and the
Casty Grantor Subtrust ("Casty") only with respect to Section 12(q) hereof.
Unless defined elsewhere herein, capitalized and other defined terms shall have
the meanings specified in Section 13.
                          ----------

                                   RECITALS

     The Company desires to sell to the Purchasers, and the Purchasers desire to
purchase from the Company such number of shares of the Series B Convertible
Preferred Stock set forth in Section 2 hereof for a total purchase price for all
shares of Series B Preferred Stock purchased hereunder equal to Fifteen Million
Four Hundred Sixty Three Thousand Nine Hundred Seventeen Dollars ($15,463,917).
The shares will constitute one hundred percent (100%) of all the issued and
outstanding shares of the Series B Preferred Stock of the Company as of the date
of the final closing thereof, all on the terms and conditions set forth herein.

     Simultaneously with the execution and delivery of this Agreement, the
Requisite Stockholders have executed and delivered a written consent to certain
of the transactions contemplated hereby, including an increase in the authorized
shares for the Stock Option Plan, adoption of the Performance-Based Stock Plan
and the issuance of shares in accordance with the Nasdaq rules and regulations.

                                   AGREEMENT

     In consideration of the premises and the mutual covenants, agreements,
hereinafter set forth, the parties to this Agreement agree as follows:

     1.   Authorization of the Securities; Nature of Agreement.
          ----------------------------------------------------

          (a) Series B Preferred Stock.  The Company has authorized the issuance
              ------------------------
and sale pursuant to the terms and conditions of this Agreement of 4,418,262
shares of its Preferred Stock, $1.00 par value per share, to be designated as
Series B Convertible Preferred Stock (the "Series B Preferred Stock"), as
                                           ------------------------
provided herein.  The shares of Series B Preferred Stock have all of the rights,
preferences, privileges and restrictions set forth in the Certificate of
Designation, Number, Powers, Preferences and Relative, Participating, Optional
and Other Rights of Series B Convertible Preferred Stock of IFX Corporation (the
"Series B Certificate"), a copy of which, in
 --------------------
<PAGE>

the form to be filed with the Secretary of State of the State of Delaware, is
attached as Exhibit B hereto.
            ---------

          (b) Nature of Agreement.  This Agreement insofar as it relates to the
              -------------------
purchase of a particular number of the Series B Preferred Stock by any Purchaser
is a separate agreement between that Purchaser and the Company.  But this
Agreement insofar as it relates to the rights, duties and remedies of the
Company and the Purchasers, from and after the Closing, shall be deemed to be
one Agreement.

     2.   Sale and Purchase of Series B Preferred Stock.  Subject to the terms
          ---------------------------------------------
and conditions set forth in this Agreement, the Company agrees to sell to the
Purchasers, and each of the Purchasers severally and not jointly agrees to
purchase from the Company, the number of shares of Series B Preferred Stock
indicated opposite such Purchaser's name on the Schedule of Purchasers (the
"Shares") for a purchase price of Three and 50/100 Dollars ($3.50) per share
 ------
(the "Per Share Price").  The sale and purchase of the Series B Preferred Stock
      ---------------
shall take place at the offices of Kaye, Scholer, Fierman, Hays & Handler, LLP,
425 Park Avenue, New York, New York 10022, at 10:00 a.m., New York City time, at
a closing (the "Closing") to occur as soon as practicable after satisfaction or
                -------
waiver of the conditions to Closing set forth in Sections 7 and 8. At the
Closing, the Company will deliver to each Purchaser the Series B Preferred Stock
to be purchased by such Purchasers in the form of a single certificate (or such
greater number of certificates representing such shares as such Purchaser may
request), each dated the date of the Closing and registered in such Purchaser's
name (or in the name of such Purchaser's nominee(s)), against delivery by such
Purchaser to the Company or its order of immediately available funds in the
amount of the purchase price for such shares of Series B Preferred Stock. If at
the Closing, the Company shall fail to tender to any Purchaser the Series B
Preferred Stock to be purchased by such Purchasers, or any of the conditions
specified in Section 7 shall not have been fulfilled to the satisfaction of such
Purchaser, such Purchaser shall, at its election, be relieved of all further
obligations under this Agreement, without thereby waiving any other rights such
Purchaser may have by reason of such failure or such nonfulfillment.

     3.   [Intentionally Omitted].
           ---------------------

     4.   Representations and Warranties of the Company.  Subject to the
          ---------------------------------------------
exceptions set forth in the Schedule of Exceptions attached as Exhibit C hereto
                                                               ---------
(the "Schedule of Exceptions"), the Company represents and warrants to each of
      ----------------------
the Purchasers that:

          (a) Organization and Good Standing.  The Company and each of its
              ------------------------------
Subsidiaries is an entity duly organized and validly existing under and by
virtue of the laws of its state or country of incorporation and is in good
standing under such laws (to the extent the concept of good standing is
recognized under the laws of such jurisdictions).  The Company and each of its
Subsidiaries is qualified, licensed or domesticated as a foreign corporation in
all jurisdictions where the failure to be so qualified, licensed or domesticated
would have a Material Adverse Effect. The Company and each of its Subsidiaries
has full power and authority (corporate and other) to own, lease and operate its
properties and assets and to operate the Business as currently being operated.

                                       2
<PAGE>

               (i) Except as set forth on the Schedule of Exceptions, the minute
books of the Company and each of its Subsidiaries, as previously made available
to the Purchasers, contain accurate records of all meetings of and resolutions
of, or written consents by, its shareholders and its board of directors (or
committees thereof) since the date of its incorporation.

          (b) Authorization.  (i)  The Company has all requisite right, power
              -------------
and authority (corporate or otherwise) to execute and deliver this Agreement and
each of the other agreements and instruments referred to herein to be entered
into by the Company at or prior to a Closing (including the Certificate) in
connection with the consummation of the transactions contemplated by this
Agreement (the "Other Agreements") and to perform its obligations and consummate
                ----------------
all of the transactions contemplated hereunder and thereunder, including the
sale and issuance of the shares of Series B Preferred Stock to be purchased by
each Purchaser at the Closing.  All corporate proceedings have been taken and
all corporate authorizations have been secured which are necessary on the part
of the Company and each of its Subsidiaries to authorize the execution, delivery
and performance of this Agreement and each of the Other Agreements.

               (ii) This Agreement has been duly executed and delivered and
constitutes, and each of the Other Agreements when executed and delivered by the
Company, will constitute, legal, valid and binding obligations of the Company,
enforceable in accordance with their respective terms, subject to applicable
bankruptcy, insolvency or other similar laws affecting the enforceability of
creditors' rights generally and court decisions with respect thereto, and the
discretion of courts in granting equitable remedies.

               (iii) The shares of the Series B Preferred Stock to be purchased
by each Purchaser at the Closing have been duly authorized and, when delivered,
will be duly and validly issued and outstanding, fully paid and nonassessable,
and will be free of Encumbrances.  The Common Stock of the Company issuable upon
conversion of the Series B Preferred Stock (the "Conversion Shares") (i) has
                                                 -----------------
been duly authorized, (ii) has been reserved for issuance upon conversion of the
Series B Preferred Stock, and (iii) when issued, will be duly and validly issued
and outstanding, fully paid and nonassessable and will be free of Encumbrances.

          (c) Capital Stock.  (i)  (A)  On the date hereof, the authorized
              -------------
capital stock of the Company consists of (1) 50,000,000 shares of Common Stock,
par value $.02 per share (the "Common Stock"), of which 13,978,645 shares of
                               ------------
Common Stock are issued and outstanding, and (2) 10,000,000 shares of Preferred
Stock, par value $1.00 per share (the "Preferred Stock"), of which 2,030,869
                                       ---------------
shares of Preferred Stock have been designated Series A Preferred Stock, all of
which shares of Series A Preferred Stock are issued and outstanding ("Series A
                                                                      --------
Preferred Stock"); and (B) immediately after the Closing, the authorized capital
---------------
of the Company will consist of (1) 50,000,000 shares of Common Stock, of which
13,978,645 shares of Common Stock will be issued and outstanding, and (2)
10,000,000 shares of Preferred Stock, of which (x) 2,030,869 shares of Preferred
Stock will have been designated as Series A Preferred Stock, all of which shares
will be issued and outstanding and (y) 4,418,262 shares of Preferred Stock will

                                       3
<PAGE>

have been designated Series B Preferred Stock ("Series B Preferred Stock") all
                                                ------------------------
of which shares will be issued and outstanding.

          (ii)    Except as set forth in the Schedule of Exceptions, the Company
has not (A) issued or granted, (B) agreed to issue or grant, or (C) caused or
permitted any of its Subsidiaries to issue or grant, any option, warrant, right
or other Convertible Security which affords any Person the right to purchase or
otherwise acquire any shares of the Common Stock, the Series A Preferred Stock
or the Series B Preferred Stock, or any other security of the Company or any of
its Subsidiaries. Neither the Company nor any of its Subsidiaries is subject to
any obligation (contingent or otherwise) to purchase or otherwise acquire or
retire any shares of its securities.

          (ii)    All of the issued and outstanding securities of the Company
and its Subsidiaries have been duly authorized and validly issued, are fully
paid, nonassessable and free of preemptive rights (other than those preemptive
rights set forth in the Schedule of Exceptions) and other Encumbrances, and were
issued in compliance with all Applicable Laws, including those regulating the
offer, sale or issuance of securities.

          (iv)    Except as set forth in the Schedule of Exceptions, no Person
has any rights of first refusal or similar rights or any preemptive rights in
connection with the issuance of the shares of Series B Preferred Stock or
Conversion Shares, or with respect to any future offer, sale or issuance of
securities by the Company, any of its Subsidiaries or any of its stockholders,
other than as provided in this Agreement or after the Closing, the Registration
Rights Agreement, the Stockholders Agreement, the Series A Certificate or the
Series B Certificate.

          (v)     The Schedule of Exceptions sets forth a true and correct list
of (1) to the knowledge of the Company, each of the Company's shareholders who
owns, of record or beneficially, more than 5% of the Common Stock on a Fully
Diluted Basis, indicating the number and class of shares owned by each
shareholder, and such shareholder's percentage interest in the Company and
percentage interest in the Common Stock on a Fully Diluted Basis, and (2) each
of the holders of Convertible Securities, the number and type of Convertible
Securities owned by such holder and to the knowledge of the Company, such
holder's percentage interest in the Company and percentage interest in the
Common Stock on a Fully Diluted Basis.

          (vi)    True and correct copies of all documents relating to the
issuance and terms of all outstanding shares of capital stock and other equity
securities of the Company and all Convertible Securities of the Company issued
after November 10, 1998 have been provided to the Purchasers. Except as set
forth in the Schedule of Exceptions, each option issued to purchase capital
stock or other equity securities of the Company granted under the Stock Option
Plan or otherwise was granted pursuant to an option agreement in substantially
the form provided to the Purchasers.

     (d)  Subsidiaries.  (i)  The name of each Subsidiary of the Company,
          ------------
the jurisdiction of its incorporation and the ownership of capital stock of its
shareholders are listed in

                                       4
<PAGE>

the Schedule of Exceptions. Except as set forth on the Schedule of Exceptions,
all of the issued and outstanding shares of capital stock of each Subsidiary are
100% owned, beneficially and of record, by the Company (other than a single
share (if any) of such Subsidiary held by a nominee of the Company in order to
comply with Applicable Law), are validly issued, fully paid and nonassessable,
and free from Encumbrances.

          (ii)    Except for the capital stock or other securities of the
Subsidiaries listed on the Schedule of Exceptions, the Company does not own,
directly or indirectly, beneficially or of record, or have any obligations to
purchase or otherwise acquire, any capital stock or other securities of any
Person. Except as set forth on the Schedule of Exceptions, none of the
Subsidiaries owns, directly or indirectly, beneficially or of record, or has any
obligation to acquire any capital stock or other securities of any Person.

     (e)  Compliance With Material Instruments. Except as set forth on the
          ------------------------------------
Schedule of Exceptions, the Company and each Subsidiary is not in violation of
(i) any Applicable Law, (ii) any term of its Certificate of Incorporation or
Bylaws (or equivalent documents in its jurisdiction of organization), or (iii)
any Contract to which it is subject and which is material to the Business
(collectively, the "Material Instruments"). The execution and delivery by the
                    --------------------
Company of this Agreement and the Other Agreements, the performance by the
Company of its obligations hereunder and thereunder and the consummation by the
Company of the transactions contemplated hereby and thereby, including the
issuance and sale of the Series B Preferred Stock, the issuance of the
Conversion Shares and the taking of any other action contemplated by this
Agreement or the Other Agreements, will not (i) result in (A) any violation of
any Applicable Law, or (B) any violation of any term of the Company's or any of
its Subsidiaries' Certificate of Incorporation or Bylaws (or equivalent
documents), or (C) any violation of or any conflict with or a default (with or
without notice, lapse of time or both) under any of the Material Instruments,
which violation, conflict or default might reasonably be expected to materially
adversely affect the ability of the Company or any of its Subsidiaries to
satisfy its obligations under this Agreement, any of the Other Agreements or any
of the Material Instruments, (ii) accelerate or constitute an event entitling
the other party to any Material Instrument to accelerate the obligations of such
Material Instrument, or to increase the rate of interest presently in effect or
to entitle the other party to such Material Instrument to any other right
resulting from a change-in-control or otherwise, or (iii) result in the creation
of any Encumbrance upon any of the material properties or assets of the Company
or any of its Subsidiaries. The performance by the Company or any of its
Subsidiaries of its obligations and the enforcement of its rights under the
Material Instruments will not have a Material Adverse Effect.

     (f)  Good Title. Except as set forth on the Schedule of Exceptions, the
          ----------
Company and each of its Subsidiaries has good title to, a valid license to, or a
valid leasehold interest in, the properties and assets used by it, in each case
free and clear of all Encumbrances, except liens for current property taxes not
yet due and payable and any immaterial workmen's, repairmen's, warehouseman's
and carriers' liens arising in the ordinary course of business. The buildings,
equipment and other tangible assets of the Company and each of its Subsidiaries
are in all material respects in good operating condition and repair, free from
any known defects and are

                                       5
<PAGE>

usable in the ordinary course of the Business; and the Company and each of its
Subsidiaries owns, or has a valid leasehold interest in or license to use, all
assets necessary for the conduct of the Business as presently conducted.

     (g)  Litigation. (i) Except as set forth on the Schedule of Exceptions,
          ----------
there are no actions, proceedings, investigations (civil, criminal, regulatory
or otherwise), arbitrations, claims, demands or grievances ("Actions") pending
                                                             -------
against the Company or any Subsidiary (or, to the best knowledge of the Company,
any basis therefor or threat thereof).

          (ii)   There are no judgments unsatisfied against the Company or any
Subsidiary or consent decrees or injunctions to which the Company, any
Subsidiary or any assets of the Business are subject.

     (h)  Tax Matters. Except as set forth in the Schedule of Exceptions, the
          -----------
Company and each of its Subsidiaries (i) has timely filed (including extensions)
all Tax returns that are required to have been filed by it with all appropriate
Governmental Authorities (and all such Tax returns are true, complete and
correct in all material respects), (ii) has timely paid all Taxes owed by it or
withheld and remitted to the appropriate Governmental Authority all Taxes which
it is obligated to withhold and remit from amounts owing to any employee
(including social security taxes), creditor, customer or third party, and (iii)
has not waived any statute of limitations with respect to Taxes or agreed to any
extension of time with respect to a Tax assessment or deficiency. The assessment
of any additional Taxes for periods for which returns have been filed is not
expected to exceed the recorded liability therefor, and there are no material
unresolved questions or claims concerning the Tax liability of the Company or
any Subsidiary. There is no pending dispute with, or notice from, any taxing
authority relating to any of the Tax returns which, if determined adversely to
the Company or any Subsidiary, would result in the assertion by any taxing
authority of any valid deficiency in a material amount for Taxes, and to the
knowledge of the Company, there is no proposed liability for a deficiency in any
Tax to be imposed upon the properties or assets of the Company, the Business or
any Subsidiary. There are no federal, state, local or foreign Tax Encumbrances
on any asset of the Company, the Business or any Subsidiary (other than
Encumbrances for Taxes not yet due and payable).

     (i)  Registration Rights. Except as set forth in the Schedule of Exceptions
          -------------------
and the Registration Rights Agreement, the Company is not a party to any
agreement or commitment which obligates the Company to register under the
Securities Act of 1933, as amended (the "Securities Act"), or any other
                                         --------------
securities law of any jurisdiction, any of its presently outstanding securities
or any of its securities which may hereafter be issued.

     (j)  Offering. Subject to the accuracy of the Purchasers' representations
          --------
in Section 5 of this Agreement, the offer, issuance and sale of the Series B
Preferred Stock and the Conversion Shares constitute, and will constitute,
transactions exempt from the registration and prospectus delivery requirements
of Section 5 of the Securities Act and analogous provisions of the Applicable
Laws of all other jurisdictions, and the Company has obtained (or is exempt from
the requirement to obtain) all qualifications, permits and other consents
required by all Applicable Laws governing the offer, sale or issuance of
securities.

                                       6
<PAGE>

          (k)  Insurance.  The Schedule of Exceptions contains a true, complete
               ---------
and correct list of all insurance policies covering the Business and the
respective material assets of the Company and each Subsidiary.  The Company and
each Subsidiary maintains in full force and effect such insurance policies.
Neither the Company nor any Subsidiary is in default with respect to any
provision contained in any insurance policy.  Neither the Company nor any
Subsidiary has failed to give any notice under any insurance policy in due time.

          (l)  Certain Transactions.  Except as set forth in the Schedule of
               --------------------
Exceptions, neither the Company nor any of its Subsidiaries is indebted, either
directly or indirectly, to any of the officers, directors, advisory board
members or stockholders of the Company or any Subsidiary, or to any Affiliates
of the foregoing, in any amount whatsoever, other than for payment of salary for
services rendered and reasonable expenses; except as set forth on the Schedule
of Exceptions, none of said officers, directors, advisory board members,
stockholders and their respective Affiliates are indebted to the Company or any
Subsidiary or, to the knowledge of the Company, have any direct or indirect
ownership interest in, or any contractual relationship with, any Affiliates of
the Company or any Subsidiary or with any Person with which the Company or any
Subsidiary has a business relationship, or any Person which, directly or
indirectly, competes with the Company or any Subsidiary.  Except as set forth in
the Schedule of Exceptions, no such officer, director, advisory board member or
stockholder, nor any of their respective Affiliates, is, directly or indirectly,
a party to or otherwise an interested party with respect to any contract,
agreement, arrangement or understanding with the Company or any Subsidiary other
than agreements for the issuance of stock options to any such Person under the
Stock Option Plan.

          (m)  Contracts.  (i)  Except as expressly contemplated by this
               ---------
Agreement, or as set forth in the Schedule of Exceptions, the Company and each
of its Subsidiaries is not, and as of each of the Closings the Company and each
of its Subsidiaries will not be, a party to, or bound by, and none of their
respective assets is or will be subject to, any written or oral agreement,
contract, commitment, order, license, lease or other instrument and arrangement
of the types described below (the "Contracts"):
                                   ---------

                    (A)  any pension, profit sharing, stock option, employee
          stock purchase or other plan providing for deferred, incentive or
          other compensation to employees, any other employee benefit plan, or
          any contract with any labor union;

                    (B)  any contract for the employment or personal services of
          any officer, individual employee or other person or entity on a full-
          time, part-time, consulting, advisory or other basis providing annual
          compensation in excess of $125,000 or which, in any way, restricts or
          limits the right of the Company or any Subsidiary to terminate such
          contract at will;

                    (C)  any loan agreement, indenture, letter of credit,
          security agreement, mortgage, pledge agreement, deed of trust, bond,
          note, or other agreement relating to the borrowing of money in excess
          of $125,000 or to the

                                       7
<PAGE>

          mortgaging, pledging, transferring of a security interest, or
          otherwise placing an Encumbrance on any material asset or material
          group of assets (whether tangible or intangible) of the Company or any
          Subsidiary;

                    (D)  any guarantee of the payment or performance of any
          Person in excess of $125,000; any agreement to indemnify any Person or
          act as a surety for an amount in excess of $125,000; any other
          agreement to be contingently or secondarily liable for the obligations
          of any Person; or any "keep well" or similar credit support
          arrangements;

                    (E)  any lease or agreement under which it is the lessee of
          or holds or operates any property, real or personal, owned by any
          other party requiring annual payments in excess of $125,000;

                    (F)  any contract or agreement or group of related
          agreements with the same party or any group of affiliated parties
          which requires or may in the future require an aggregate payment by or
          to the Company or any Subsidiary in excess of $125,000;

                    (G)  any contract or agreement prohibiting it from freely
          engaging in any business or competing anywhere in the world;

                    (H)  any material licenses, licensing arrangements and other
          similar contracts providing in whole or in part for the use by a third
          party of, or limiting the use by the Company or any Subsidiary of, any
          Intellectual Property;

                    (I)  any brokerage or finder's agreements relating to this
          Transaction;

                    (J)  any joint venture, partnership and similar contracts
          involving a sharing of profits or expenses (including joint
          development and joint marketing contracts);

                    (K)  any asset purchase agreements, stock purchase
          agreements and other acquisition or divestiture agreements, including
          any agreements relating to the sale, lease or disposal of any assets
          of the Company or any of its Subsidiaries for consideration in excess
          of $50,000 or involving continuing indemnity or other obligations;

                    (L)  any material sales agency, marketing or distributorship
          agreements;

                    (M)  any contracts which contain "take or pay" provisions;

                    (N)  [Intentionally omitted];

                                       8
<PAGE>

                     (O)  any contracts, agreements or arrangements regarding
          pre-emptive rights, rights of first refusal, put or call rights or
          obligations, anti-dilution rights or other restrictions on or with
          respect to the issuance, sale or redemption of the capital stock of
          the Company or any of its Subsidiaries;

                     (P)  any contracts, agreements or arrangements regarding
          the rights, obligations, restrictions on or with respect to the voting
          of any of the capital stock of the Company or any of its Subsidiaries
          or the registration of such stock for offering to the public pursuant
          to the Securities Act; and/or

                     (Q)  any other contract, agreement or commitment not the
          subject matter of clauses (A) through (P) above which is or could be
          reasonably expected to be material to the Company, any Subsidiary or
          the Business.

               (ii)  The Company and each of its Subsidiaries has performed all
obligations required to be performed by it to date and is not in material
default under, or in material breach of, or in receipt of any claim of material
default under or material breach of, any agreement to which it is a party or to
which any of its assets is subject; the Company has no present expectation or
intention of not fully performing, or of permitting any of its Subsidiaries not
to perform fully, all such obligations; and the Company does not have any
knowledge of any material breach or anticipated material breach by the other
parties to any contract or commitment to which it or any of its Subsidiaries is
a party or to which any of its or their assets is subject.

               (iii) To the knowledge of the Company, none of the officers of
the Company or any Subsidiary is a party to any oral or written contract which
prohibits, restricts or limits his or her performance of his or her duties or
the fulfillment of his or her obligations as an employee and an officer of the
Company or any Subsidiary.

               (iv)  Each Contract is a legal, valid, binding and enforceable
obligation of the Company or a Subsidiary, and to the knowledge of the Company,
the other parties thereto, subject to applicable bankruptcy, insolvency, or
other similar laws affecting the enforceability of creditors' rights generally
and court decisions with respect thereto, and the discretion of courts in
granting equitable remedies. Except as set forth in the Schedule of Exceptions,
no Consent of any Person is required under any Contract as a result of or in
connection with the execution and delivery by the Company or any of its
Subsidiaries or the performance by the Company or any of its Subsidiaries of its
obligations hereunder or under any of the Other Agreements or the consummation
by the Company or any of its Subsidiaries of the transactions contemplated
hereby or thereby.

     (n)  Governmental Consents. No Governmental Approvals or Consents are
          ---------------------
required to be obtained under Applicable Law or the Certificate of Incorporation
and By-Laws of the Company in connection with (i) the execution, delivery or
performance by the Company of this Agreement or any of the Other Agreements or
the consummation of any transaction contemplated hereby or thereby, and (ii) the
carrying on of the Business as it is presently carried

                                       9
<PAGE>

on and is contemplated to be carried on, except as have been obtained or
accomplished and except for immaterial Governmental Approvals or Consents,
except as set forth on the Schedule of Exceptions. All such Governmental
Approvals and Consents have been duly obtained or accomplished and are in full
force and effect and the Company and its Subsidiaries are in compliance in all
material respects with each such Governmental Approval and Consent.

          (o)  Officers, Employees and Labor.  (i)  Except as set forth in the
               -----------------------------
Schedule of Exceptions, the Company and each of its Subsidiaries has complied in
all material respects with all Applicable Laws relating to the employment of
labor, including provisions thereof relating to wages, hours, social welfare,
equal opportunity and collective bargaining.  The Company does not have any
material labor relations problems.  All the employment agreements entered into
between the Company or any Subsidiary, on the one hand, and their respective
employees, on the other hand, are in full force and effect.

               (ii)   The Schedule of Exceptions contains a list of all officers
of the Company and each of its Subsidiaries and all other current employees and
consultants whose current annual salary or rate of compensation (including
bonuses, commissions and inventive compensation) is $125,000 or more, together
with their current job titles or relationship to the Company or its
Subsidiaries. None of the Persons referred to above, nor any other employee or
consultant of the Company and its Subsidiaries, has notified the Company or such
Subsidiary that such Person will cancel or otherwise terminate such Person's
relationship with the Company or such Subsidiary, or is being terminated by the
Company or such Subsidiary.

               (iii)  To the company's knowledge, none of the officers or
employees of the Company or any of its Subsidiaries is in breach of any covenant
or agreement with any previous employer or other Person with regard to (A)
restrictions on competition with the business of such previous employer or other
Person, (B) solicitation of the employees of such previous employer or other
Persons, or (C) non-disclosure of the confidential or proprietary information of
such previous employer or other Person.

               (iv)   Except as set forth on the Schedule of Exceptions, the
Company and its Subsidiaries do not have any Benefit Plans. The Company has
delivered to the Purchasers true, correct and complete copies of all documents,
summary plan descriptions, insurance contracts, third party administration
contracts and all other documentation created to embody all Benefit Plans, plus
descriptions of any Benefit Plans that have not been reduced to writing.

               (v)    Except as set forth on the Schedule of Exceptions and for
required contributions or benefit accruals for the current plan year, no
material liability has been or is expected to be incurred by the Company under
or pursuant to any Applicable Law relating to Benefit Plans and, to the best
knowledge of the Company, no event, transaction or condition has occurred or
exists that could result in any such liability to the Company or any of its
Subsidiaries or, following the Closing, the Company, its Subsidiaries, the
Purchasers or any such Benefit Plan.

                                      10
<PAGE>

               (vi)    Except as set forth on the Schedule of Exceptions, each
of the Benefit Plans listed in the Schedule of Exceptions is and has at all
times been in compliance in all material respects with all applicable provisions
of Applicable Laws.

               (vi)    Except as specifically set forth in the Schedule of
Exceptions, the execution and performance of the transactions contemplated by
this Agreement will not (either alone or upon the occurrence of any currently
planned additional or subsequent event) constitute an event under any Benefit
Plan or individual agreement that will or may result in any payment (whether of
severance pay or otherwise), acceleration, vesting or increase in material
benefits with respect to any employee, former employee, consultant, agent or
director of the Company or any Subsidiary.

               (vi)    With respect to all Benefit Plans which are funded, or
are required by Applicable Law to be funded, the present value of all accrued
benefits (vested and non-vested) of each such Benefit Plan as of the Closing
Date, will not exceed the fair market value of the assets of each such Benefit
Plan as of the Closing Date.

          (p)  Compliance with Laws.  Except as set forth on the Schedule of
               --------------------
Exceptions, the Company and each of its Subsidiaries is not, in any material
respects, in violation of any Applicable Laws and has not received notice of any
such violation.

          (q)  Intellectual Property.  Except as set forth in the Schedule of
               ---------------------
Exceptions, the Company owns free and clear of all Encumbrances, or possesses
and is validly licensed under, all Intellectual Property material to the
operation of the Business, as conducted in the past, as presently conducted and
as contemplated to be conducted.  Any such licenses are in full force and
effect.  No past, current, or planned activity, service or product of the
Company or any Subsidiary infringes or conflicts with the Intellectual Property
of any third party.  The Company and its Subsidiaries have taken appropriate
steps and measures to establish and preserve ownership of or right to use all
Intellectual Property material to the operation of the Business. The Company
owns all rights in and to any and all Intellectual Property used or planned to
be used by the Company or any Subsidiary, or covering or embodied in any past,
current or planned activity, service or product of the Company or any
Subsidiary, which Intellectual Property was made, developed, conceived, created
or written by any consultant retained, or any employee employed, by the Company
or any Subsidiary.  To the Company's knowledge, no former or current employee,
and no former or current consultant, of the Company or any Subsidiary has any
rights in any Intellectual Property made, developed, conceived, created or
written by the aforesaid employee or consultant during the period of his
retention by the Company or the Subsidiary which can be asserted against the
Company or any Subsidiary. The Company owns, or has full and unrestricted rights
to use, any and all domain names containing the word "Unete" (including the word
"Unete" in combination with any non-military extension, including Unete.com,
Unete.net and Unete.org).  The domain name Unete.com does not and will not
receive an amount of Internet traffic intended for any website or webpage of the
Company that would have a Material Adverse Effect.  Except as set forth on the
Schedule of Exceptions, neither the Company nor any Subsidiary has knowledge of
any Intellectual Property owned by the Company or any Subsidiary and material to
the operation of the Business which is the subject

                                      11
<PAGE>

of any Encumbrance or other agreement granting rights therein to any third
party. Except as set forth on the Schedule of Exceptions, neither the Company
nor any Subsidiary is obligated or under any liability whatsoever to make any
payments by way of royalties, fees or otherwise to any owner, licensor of, or
other claimant to, any Intellectual Property, with respect to the use thereof or
in connection with the conduct of the Business, or otherwise. The Company and
each of its Subsidiaries has taken reasonable steps to protect, maintain and
safeguard the Intellectual Property material to the Business, including any
Intellectual Property for which improper or unauthorized disclosure would impair
its value or validity, and has executed and has had executed appropriate
nondisclosure and confidentiality agreements and made all appropriate filings
and registrations in connection with the foregoing. Neither the Company nor any
Subsidiary has knowledge of any infringement by any third party of any
Intellectual Property of the Company or any Subsidiary. There has been no
judgment, decree, injunction, rule, or order rendered by any Governmental
Authority, and no claim made against the Company or any Subsidiary, asserting
the invalidity, abuse, misuse or unenforceability of any Intellectual Property
material to the operation of the Business, or that would limit, cancel, or
question the validity of, or the rights of the Company or any Subsidiary in, any
Intellectual Property material to the operation of the Business.

          (r)  Environmental Matters.  (i)  The Company has complied in all
               ---------------------
material respects with all applicable Environmental Laws.  There is no pending
or, to the knowledge of the Company, threatened civil or criminal litigation,
written notice of violation, formal administrative proceeding, or investigation,
inquiry or information request by any Governmental Authority, relating to any
Environmental Law involving the Company or any of its Subsidiaries.

               (ii)   Neither the Company, nor to the knowledge of the Company,
any third party has released any Materials of Environmental Concern into the
environment at any parcel of real property or any facility formerly or currently
owned, leased, operated or controlled by the Company.  The Company is not aware
of any releases of Materials of Environmental Concern at parcels of real
property or facilities other than those owned, leased, operated or controlled by
the Company that could reasonably be expected to have an impact on the real
property or facilities owned, leased, operated or controlled by the Company.

               (iii)  Set forth in the Schedule of Exceptions is a list of all
environmental reports, investigations and audits of which the Company is aware
(whether conducted by or on behalf of the Company or a third party, and whether
done at the initiative of the Company or directed by a Governmental Authority or
other third party) issued or conducted during the five years preceding the date
hereof relating to premises currently or previously owned, leased or operated by
the Company or any of its Subsidiaries.  Complete and accurate copies of each
such report, or the results of each such investigation or audit, have been
provided to the Purchasers.

          (s)  Certain Practices.  Neither the Company nor any Subsidiary (nor
               -----------------
any constituent corporation of any merger of which the Company or any Subsidiary
is a surviving corporation, or other Person of which the Company or any
Subsidiary is the surviving corporation) nor any of their respective officers,
employees, directors, representatives or agents

                                      12
<PAGE>

has, since the inception of the Business by the Company or any of its
Subsidiaries (or their predecessors): (i) taken any action in furtherance of any
boycott not sanctioned by the United States; (ii) entered into any contract or
agreement to conduct any transaction with any Governmental Authority, agent,
representative or resident of, or any Person based or resident in, any of the
following countries: Angola (UNITA); Burma (Myanmar); Cuba; Iran; Iraq; Libya;
North Korea; Sudan; Syria; and the Federal Republic of Yugoslavia (Serbia and
Montenegro); or (iii) knowingly offered, promised, authorized or made, directly
or indirectly, (A) any unlawful payments under Applicable Laws, or (B) any
payments or other inducements (whether or not unlawful), to any government
official, including any official of an entity owned or controlled by a
government, political party or official thereof or any candidate for political
office, with the intent or purpose of: (1) influencing any act or decision of
such official in his official capacity; (2) inducing such official to do or omit
to do any act in violation of the lawful duty of such official; (3) receiving an
improper advantage; or (4) inducing such official to use his influence with a
Governmental Authority to affect or influence any act or decision of such
Governmental Authority; in order to assist the Company or any Subsidiary in
obtaining or retaining business for or with, or directing business to, any
person.

          (t)  Brokers.  No finder, broker, agent, financial advisor or other
               -------
intermediary has acted on behalf of the Company or any of its Affiliates in
connection with the offering of the Series B Preferred Stock or the negotiation
or consummation of this Agreement or the Other Agreements or any of the
transactions contemplated hereby or thereby.  All such negotiations or the
consummation of this Agreement or the Other Agreements or any of the
transactions contemplated hereby or thereby will not give rise to any valid
claim against the Company, any Subsidiary or any of the Purchasers for any
brokerage or finder's commission, fee or similar compensation.

          (u)  No Undisclosed Liabilities.  Except as set forth on the Schedule
               --------------------------
of Exceptions or in the SEC Reports, neither the Company nor any Subsidiary has
any liabilities, obligations, claims, commitments or debts of any nature,
whether known or unknown, whether due or becoming due, or asserted or unasserted
(whether fixed, accrued, absolute, contingent, secured or otherwise).  The
Schedule of Exceptions sets forth a true and complete schedule of accrued
liabilities and future payments due with respect to any acquisitions by the
Company or any Subsidiary of any equity securities or assets of any Person.

          (v)  Disclosure.  This Agreement (including the Schedules and Exhibits
               ----------
hereto) does not contain any untrue statement of any material fact or omits to
state a material fact necessary in order to make the statements contained herein
or therein, in light of the circumstances under which they were made, not
misleading.  To the Company's knowledge, there are no facts that, individually
or in the aggregate, would have a Material Adverse Effect that have not been set
forth in this Agreement (including the Schedule of Exceptions).

          (w)  SEC Filings.  Since January 1, 1997, the Company has timely filed
               -----------
all forms, reports and documents with the SEC required to be filed by it
pursuant to the Federal securities laws and the rules and regulations of the SEC
thereunder, all of which complied in all material respects with all applicable
requirements of the Securities Act and the Exchange Act and

                                      13
<PAGE>

the rules and regulations of the SEC thereunder. The above referenced forms,
reports and documents of the Company are sometimes collectively referred to
herein as the "SEC Reports." A true and complete list of the SEC Reports is set
forth in the Schedule of Exceptions. All documents required to be filed as
exhibits to the SEC Reports have been timely filed. None of the SEC Reports,
including without limitation any financial statements or schedules included
therein, at the time filed contained any untrue statement of a material fact or
omitted to state a material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading.

          (x)  Financial Statements.  The consolidated balance sheets and the
               --------------------
related consolidated statements of income, stockholders' equity and cash flows
(including the related notes thereto) of the Company and its Subsidiaries
included in the SEC Reports complied as to form in all material respects with
the applicable accounting requirements and published rules and regulations of
the SEC with respect thereto, have been prepared in accordance with GAAP,
applied on a basis consistent with prior periods except as otherwise noted
therein, present fairly the consolidated financial position of the Company and
its Subsidiaries as of their respective dates, and the consolidated results of
their operations and their cash flows for the periods presented therein, and
reflect all adjustments necessary for the fair presentation of results for the
periods presented except as set forth on the Schedule of Exceptions.

          (y)  Availability and Transfer of Foreign Currency.  All requisite
               ---------------------------------------------
foreign exchange control approvals and other authorizations, if any, by any
Governmental Authority have been validly obtained and are in full force and
effect to assure:  (a) the ability of the Company and its Subsidiaries to make
any and all payments necessary to (i) each Purchaser for dividend payments on
the Common Stock and the Series B Preferred Stock, or (ii) any other party in
order to conduct the Business; (b) the ability of the Company's Subsidiaries to
make any and all payments of dividends and other distributions to the Company
and any and all other intercompany payments to or from the Company; and (c) the
availability of dollars to enable each Purchaser to convert its investment to
dollars, if necessary, if such Purchaser liquidates its investment in the Series
B Preferred Stock or the Common Stock.

          (z)  Absence of Changes.  Except as set forth in the Schedule of
               ------------------
Exceptions, since June 30, 2000, neither the Company nor any Subsidiary has:

               (i)    suffered any Material Adverse Effect;

               (ii)   incurred, assumed, guaranteed or discharged any debt,
claim, commitment, obligation or liability, absolute, accrued, contingent or
otherwise, whether due or to become due (including any indebtedness for borrowed
money), in excess of $100,000, individually or in the aggregate;

               (iii)  mortgaged, pledged or subjected to any other Encumbrance,
any material piece of property, business or assets, tangible or intangible;

                                      14
<PAGE>

               (iv)   sold, transferred, leased to others or otherwise disposed
of any of the assets of the Business, in excess of $100,000, individually or in
the aggregate, or canceled or compromised any debt, claim, commitment, liability
or obligation, or waived or released any right of substantial value, involving
an amount in excess of $100,000, individually or in the aggregate;

               (v)    received any written notice of termination of any Contract
with required payments thereunder in excess of $100,000;

               (vi)   suffered any damage, destruction or loss (whether or not
covered by insurance) to property, in excess of $100,000, individually or in the
aggregate;

               (vii)  transferred or granted  any rights under, or entered into
any settlement regarding the breach, misappropriation, infringement or violation
of, any Intellectual Property, or modified any existing rights with respect
thereto in a manner involving payments by or to the Business in excess of
$100,000, individually or $100,000 in the aggregate;

               (viii) with respect to amounts in excess of $25,000 per year,
made any change in the rate of compensation, commission, bonus or other direct
or indirect remuneration payable, or paid or agreed or made any enforceable oral
promise to pay, conditionally or otherwise, any bonus, incentive, retention or
other compensation, retirement, welfare, fringe or severance benefit or vacation
pay, to or in respect of any employee, distributor or agent;

               (ix)   made any change in its accounting, auditing or tax
methods, practices or principles;

               (x)    encountered any labor union organizing activity, had any
actual or threatened employee strikes, work stoppages, slowdowns or lockouts, or
had any material and adverse change in its relations with its employees,
distributors, agents, customers or suppliers;

               (xi)   entered into any Contract, involving an amount per year in
excess of $100,000, individually or in the aggregate, or paid or agreed to pay
any brokerage or finder's fee, or incurred any severance pay obligations by
reason of, this Agreement or any of the transactions contemplated hereby;

               (xii)  made any grant of credit to any customer or distributor on
terms or in amounts materially more favorable than had been extended to that
customer or distributor in the past; or

               (xiii) taken any action or omitted to take any action that has
resulted or could reasonably be expected to result in the occurrence of any of
the foregoing.

          (aa) Real Property Holding Company.  The Company is not a real
               -----------------------------
property holding company within the meaning of Section 897(c)(2) of the United
States Internal Revenue Code of 1986, as amended.

                                      15
<PAGE>

          (bb) Investment Company Act.  The Company is not, nor is it directly
               ----------------------
or indirectly controlled by or acting on behalf of, any Person that is an
"investment company" within the meaning of the United States Investment Company
Act of 1940, as amended.

          (cc) Subchapter S.  The Company has not elected to be treated as a
               ------------
Subchapter S corporation or a collapsible corporation pursuant to Section
1362(a) or Section 341(f) of the United States Internal Revenue Code of 1986, as
amended.

          (dd) State Takeover Statutes.  The Board of Directors of the Company
               -----------------------
has approved this Agreement, the Other Agreements and the transactions
contemplated hereby and thereby and the provisions of any "fair price,"
"moratorium," "control share," "interested stockholders," "affiliated
transaction" or other anti-takeover statute or regulation, and any antitakeover
or other restrictive provisions of the Company's Certificate of Incorporation
are not applicable to the transactions contemplated by this Agreement or the
Other Agreements.

          5.   Representations and Warranties of the Purchasers.  Each Purchaser
               ------------------------------------------------
severally (and not jointly) represents and warrants to the Company that:

          (a)  Investment Intent. The shares of Series B Preferred Stock to be
               -----------------
purchased by and issued to the Purchaser pursuant to this Agreement are being be
cquired by the Purchaser solely for its own account, for investment purposes
only, and with no present intention of distributing, selling or otherwise
disposing of them.

          (b)  Sophistication.  Such Purchaser is able to bear the economic risk
               --------------
of an investment in shares of the Series B Preferred Stock to be purchased by it
pursuant to this Agreement and can afford to sustain a total loss of such
investment, and has such knowledge and experience in financial and business
matters that it is capable of evaluating the merits and risks of the proposed
investment and therefore has the capacity to protect its own interests in
connection with the purchase of its respective shares of Series B Preferred
Stock.

          (c)  Illiquidity.  Such Purchaser understands that there is no public
               -----------
public market for the shares of Series B Preferred Stock to be purchased by it
and that there may never be a public market for such stock, and that even if a
market develops for such stock such Purchaser may have to bear the risk of its
investment in such stock for a substantial period of time.

          (d)  Accredited Investor. Such Purchaser is an "accredited
               -------------------
investor" within the meaning of Regulation D promulgated under the Securities
Act. In addition (but without limiting the effect of the Company's
representations and warranties contained herein), such Purchaser has received
such information as it considers necessary or appropriate for deciding whether
to purchase its respective shares of Series B Preferred Stock.

          (e)  Brokers.  No finder, broker, agent, financial advisor or
               -------
intermediary has acted on behalf of such Purchaser in connection with the
transactions contemplated by this Agreement or the Other Agreements.

                                      16
<PAGE>

          (f)  Investment Company Act.  No Purchaser is an "investment
               ----------------------
company" within the meaning of the United States Investment Company Act of 1940,
as amended.

          (g)  Requisite Power and Authority.  Each Purchaser has all necessary
               -----------------------------
power and authority to execute and deliver this Agreement and the Other
Agreements to which it is a party and to carry out their provisions. This
Agreement has been duly executed and delivered by each Purchaser, and each of
the Other Agreements when executed and delivered by each Purchaser who is a
party thereto, will constitute the legal, valid and binding obligations of such
Purchaser, enforceable in accordance with their terms, subject to applicable
bankruptcy, insolvency, or other similar laws affecting the enforceability of
creditors' rights generally and court decisions with respect thereto, and the
discretion of courts in granting equitable remedies.

          (h)  No Conflict.  The execution and delivery by each Purchaser of
               -----------
this Agreement and the consummation of the transactions contemplated hereby by
each Purchaser will not result in any violation of or default under, any
provision of the organizational documents of such Purchaser, any contract to
which such Purchaser is a party or any applicable law, rule or regulation, which
violation or default could reasonably be expected to (i) affect the validity of
this Agreement or any agreement entered into pursuant hereto, (ii) affect in any
material respect any action taken or to be taken by such Purchaser pursuant to
this Agreement or any agreement entered into pursuant hereto or (iii) have a
material adverse effect on the properties, assets, business or operations of
such Purchaser.

     6.   Covenants.
          ---------

          (a)  Pre-Closing Actions.  As promptly as practicable, each of the
               -------------------
parties to this Agreement will (i) use commercially reasonable efforts to take
all actions required of such party to do all other things reasonably necessary,
proper or advisable to consummate the transactions contemplated hereby by the
date of the respective Closing, (ii) file or supply, or cause to be filed or
supplied, all applications, notifications and information required to be filed
or supplied by such party pursuant to Applicable Law in connection with this
Agreement, the issuance of the shares of Series B Preferred Stock pursuant
hereto and the consummation of the other transactions contemplated hereby and by
the Other Agreements; (iii) use all reasonable efforts to obtain, or cause to be
obtained, all Consents (including all Governmental Approvals and any Consents
required under any contract) necessary to be obtained by such party in order to
consummate the transactions contemplated pursuant to this Agreement and the
Other Agreements; and (iv) coordinate and cooperate with the other parties in
exchanging such information and supplying such assistance as may be reasonably
requested by the other parties in connection with any filings and other actions
to be made or taken in order to consummate the transactions contemplated
pursuant to this Agreement and by the Other Agreements.

          (b)  Covenants Pending Closing.  Pending the Closing, neither the
               -------------------------
Company nor any Subsidiary will, without the Purchasers' prior written consent,
take any action which would result in any of the representations or warranties
made by the Company in this Agreement not being true in any material respect at
and as of the time immediately after such action, or in

                                      17
<PAGE>

any of the covenants contained in this Agreement becoming incapable of
performance. The Company will promptly notify the Purchasers of any action or
event of which it becomes aware which has the effect of making incorrect any of
such representations or warranties in any material respect or which has the
effect of rendering any of such covenants incapable of performance. The giving
of such notice shall not relieve the Company of any liability or the failure of
any condition to the obligations of the Purchasers hereunder.

          (c)  Stockholder Approval; Information Statement.
               -------------------------------------------

               (i)  As promptly as possible after the execution and delivery of
this Agreement, the Company (i) will prepare and file with the SEC, use its
reasonable best efforts to have cleared by the SEC and will thereafter mail to
its stockholders as promptly as practicable an information statement meeting the
requirements of Regulation 14C promulgated under the Securities Exchange Act of
1934, as amended (the "Information Statement"); and (ii) will otherwise comply
                       ---------------------
with Applicable Law in connection with obtaining the approval of the Company's
stockholders in connection with the transactions contemplated hereby. The
Company will provide the Purchasers with a copy of the preliminary Information
Statement and all modifications thereto prior to filing or delivery to the SEC
and will consult with the Purchasers in connection therewith. The Company will
notify the Purchasers promptly of any receipt of any comments from the SEC or
its staff and of any request by the SEC or its staff for amendments or
supplements to the Information Statement or for additional information and will
supply the Purchasers with copies of all correspondence between the Company or
any of its representatives, on the one hand, and the SEC or its staff, on the
other hand, with respect to the Information Statement. If at any time after the
mailing of the Information Statement to the Company's stockholders there shall
occur any event that should be set forth in an amendment or supplement to the
Information Statement, the Company will promptly prepare and mail to its
stockholders such an amendment or supplement. The Company will not mail any
Information Statement, or any amendment or supplement thereto, to which the
Purchasers reasonably object. The Company covenants that the Information
Statement, including any amendment or supplement thereto shall not contain any
untrue statement of a material fact or omission of a material fact required to
be stated therein or necessary to make the statements therein not misleading.

               (ii) UBS covenants that any information regarding UBS furnished
by it in writing to the Company, specifically for inclusion in the Information
Statement (including any amendment or supplement thereto) will not contain any
untrue statement of a material fact or omission of a material fact required to
be stated in the Information Statement or any amendment or supplement thereto
necessary to make the statements therein not misleading.

          (d)  No Solicitation.  Except as otherwise expressly authorized
               ---------------
in this Agreement, from the date hereof to the Closing, the Company and its
Subsidiaries shall (and shall cause their respective employees, directors, agent
and Affiliates to) immediately suspend any existing negotiations or discussions
relating to any sale or other transfer of actual or beneficial ownership of the
Company, any shares of capital stock of the Company or any Subsidiary, the
business or any of the Company's or any Subsidiary's assets (other than in the

                                      18
<PAGE>

ordinary course of business) (collectively, a "Transaction"), and the Company
                                               -----------
and its Subsidiaries shall not, and shall cause their respective employees,
directors, agents and Affiliates to not, (a) solicit any proposals or offers
relating to a Transaction, or (b) negotiate or discuss with any third party
concerning any proposal or offer for a Transaction.

          (e)  Books and Records.  The Company shall, and shall cause each
               -----------------
Subsidiary to, maintain books and records accurately disclosing all payments
made.

          (f)  Post-Closing Covenants.  Until the consummation of a Qualified
               ----------------------
Public Offering, the Company will deliver to each holder of at least 60,000
shares of Series B Preferred Stock and/or Conversion Shares:

               (i)    as soon as available, but in any event within ninety (90)
days after the end of each fiscal year of the Company, a copy of the audited
consolidated balance sheet of the Company and its Subsidiaries as at the end of
such fiscal year and the related audited statements of consolidated income,
stockholders' equity and changes in financial position of the Company and its
Subsidiaries for such fiscal year, setting forth in each case (after the first
full fiscal year of the Company) in comparative form the figures for the
previous year which shall be prepared in accordance with GAAP applied
consistently throughout the periods reflected therein and reported on without
any qualification as to the scope of the audit by independent certified public
accountants of nationally recognized standing;

               (ii)   as soon as available but in any event within thirty (30)
days after the end of each calendar month of the Company such monthly reports as
are presented to management of the Company or any of its Subsidiaries.

               (iii)  No later than thirty (30) days prior to the start of each
fiscal year, an annual business plan setting forth the anticipated strategic
business activities and goals of the Company and its Subsidiaries, including an
expected annual budget and operating plan (containing projections of operating
results) for the Company and its Subsidiaries.

               (iv)   As soon as available, but in any event within forty-five
(45) days after the end of each semi-annual fiscal period of the Company, an
update to the monthly projections contained in the annual budget, operating plan
and business plan furnished by the Company to the Purchasers pursuant to
subsection (iii) above;

               (v)    promptly upon receipt thereof, copies of all final reports
submitted to the Company or any of its Subsidiaries by independent certified
public accountants in connection with each annual, interim or special audit of
the books of the Company or of any of its Subsidiaries made by such accountants,
including, without limitation, any final comment letter submitted by such
accountants to management in connection with their annual audit;

               (vi)   promptly upon their becoming available, copies of all
financial statements, reports, notices and proxy statements sent or made
available generally by the Company to all of its security holders in their
capacity as such or by any Subsidiary of the

                                      19
<PAGE>

Company to its security holders, other than the Company, and of all regular and
periodic reports and all final registration statements and final prospectuses,
if any, filed by the Company or any of its Subsidiaries with any securities
exchange or with the SEC or any Governmental Authority succeeding to any of its
functions;

               (vii)     as soon as available, but in any event within thirty
(30) days after the end of each month and within ten (10) days prior to each
regularly scheduled meeting of the Board of Directors of the Company, a
narrative report prepared by the President of the Company detailing the
activities, business developments, operating results and marketing efforts of
the Company and its Subsidiaries since the date of the previous such report
delivered by the Company pursuant to this subsection (vii); and

               (viii)    such other information reasonably requested by such
Purchaser.

          (g)  Inspection Rights.  Until the consummation of a Qualified Public
               -----------------
Offering, each holder of at least 60,000 shares of Series B Preferred Stock
and/or Conversion shares shall have the right, upon reasonable notice, to visit
and inspect any of the properties of the Company or any of its Subsidiaries, and
to discuss the affairs, finances and accounts of the Company or any of its
Subsidiaries with its directors, officers and employees, all at such reasonable
times and as often as may be reasonably requested; provided, however, that the
                                                   --------  -------
Company shall not be obligated to provide access to any information which it
reasonably considers to be a trade secret or similar confidential information
unless the recipient of such information executes a nondisclosure agreement in a
form reasonably acceptable to the Company.

          (h)  Listing Application.  As soon as possible as of the date hereof
               -------------------
the Company shall file with Nasdaq a listing application with respect to the
Conversion Shares and use its reasonable best efforts to cause such application
to become effective.

     7.   Conditions to Obligations of the Purchasers.  The obligation of each
          -------------------------------------------
of the Purchasers to purchase and pay for the Series B Preferred Stock which it
has agreed to purchase at the Closing and the other obligations of each of the
Purchasers under this Agreement are subject to the fulfillment at or prior to
the Closing of the following conditions, any of which may be waived in writing
in whole or in part by such Purchaser:

          (a)  Representations and Warranties.  On the date of the Closing each
               ------------------------------
of the representations and warranties of the Company set forth in this Agreement
that is qualified as to materiality and each of the representations and
warranties set forth in Section 4(c) shall be true and correct in all respects
and each such representation and warranty that is not so qualified shall be true
and correct in all material respects in each case on the date hereof and at and
as of the date of the Closing with the same effect as though such
representations and warranties had been made at and as of the date of the
Closing.

          (b)  Performance.  The Company and each of its Subsidiaries shall have
               -----------
performed and complied in all material respects with all agreements and
conditions contained herein required to be performed or complied with by it
prior to or at the Closing.

                                      20
<PAGE>

          (c)  Absence of Litigation.  (i) The consummation of the transactions
               ---------------------
contemplated hereby shall not have been restrained, enjoined or otherwise
prohibited by any Applicable Law, including any order, injunction, decree or
judgment of any court or other Governmental Authority; (ii) no court or other
Governmental Authority shall have determined that any Applicable Law makes
illegal the consummation of the transactions contemplated hereby and no Action
with respect to the application of any such Applicable Law to such effect shall
be pending or threatened; and (iii) no Action shall be pending or shall have
been threatened which seeks to impose liability upon any of the Purchasers by
reason of the consummation of the transactions contemplated by this Agreement.

          (d)  Opinion of Counsel to the Company and Subsidiaries.  The
               --------------------------------------------------
Purchasers shall each have received the written opinion of counsel for the
Company, in form and substance satisfactory to the Purchasers dated and
delivered as of the date of the Closing, substantially identical in form and
substance to Exhibit D hereto.
             ---------

          (e)  Consents.  The Company shall have obtained any and all Consents
               --------
and Governmental Approvals set forth in the Schedule of Exceptions, and shall
have made any and all filings and declarations necessary or appropriate (A) for
the consummation of the transactions contemplated by this Agreement and the
Other Agreements, (B) pursuant to Applicable Law, and (C) pursuant to Contracts
applicable to the Company in connection with the transactions contemplated by
this Agreement and the Other Agreements.

          (f)  Assignment of Intellectual Property.  All the Intellectual
               -----------------------------------
Property set forth in the Schedule of Exceptions shall have been assigned or
licensed, as applicable, to the Company pursuant to instruments in form and
substance satisfactory to the Purchasers, and the written Consent of any third
party necessary for any such assignment or license shall have been obtained.

          (g)  Contemporaneous Transactions.  Prior to or contemporaneously with
               ----------------------------
the Closing:

               (i)   Each of the Stockholders Agreement and Registration Rights
Agreement shall have been executed and delivered by each party named on the
signature pages thereof;

               (ii)  (A) The Company shall have sold to each Purchaser, and each
of the Purchasers shall have purchased, the shares of Series B Preferred Stock
to be purchased at the Closing by such Purchaser under this Agreement, and (B)
the Company shall have delivered to each Purchaser certificates representing
such shares of Series B Preferred Stock, each registered in the name of such
Purchaser or the name of its nominee(s).

               (iii) The Series B Certificate shall have been duly filed with
the Secretary of State of the State of Delaware. The Series B Certificate shall
be in full force and effect as of the Closing and shall not have been amended or
modified.

                                      21
<PAGE>

               (iv)   The Series A Certificate shall have been duly filed with
the Secretary of State of the State of Delaware. The Series A Certificate shall
be in full force and effect as of the Closing and shall not have been amended or
modified.

               (v)    The transactions contemplated by the Tutopia Stock
Purchase Agreement attached hereto as Exhibit G shall have been consummated at
                                      ---------
or prior to the Closing.

               (vi)   The Company shall have duly adopted the Amendment to the
1998 Option Plan in accordance with Applicable Law and Nasdaq rules and
regulations.

               (vii)  The Company shall have duly adopted the Performance-Based
Stock Option Plan in accordance with Applicable Law and Nasdaq rules and
regulations.

               (viii) The Company shall have obtained the approval of its
stockholder in accordance with Applicable Law and Nasdaq rules and regulations
necessary to consummate the transactions contemplated hereby.

               (ix)   The composition of the Board shall be in compliance with
the terms of the Stockholders Agreement, including the appointment of an
additional UBS designee such that UBS designees shall constitute three out of
the seven members of the Board.

               (x)    A Nasdaq listing application with respect to the
Conversion Shares shall have been filed and become effective.

               (xi)   The Stockholder Notification Period shall have elapsed.

               (xii)  The requirements of the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended, or any foreign anti-competition, antitrust
or pre-merger notification rules and regulations, if applicable, shall have been
complied with.

               (xiii) The Company shall have received waivers from its senior
management, optionholders and the other parties to the Material Instruments, in
form and substance satisfactory to the Purchasers, of the change-in-control
provisions contained in their respective employment agreements, option
agreements and/or Material Instruments with respect to the transactions
contemplated hereby.

          (h)  Closing Papers.  The Company shall have delivered to each of the
               --------------
Purchasers all of the following:

               (i)    a certificate signed by the President and Chief
Executive Officer of the Company, dated as of the date of the Closing, stating
that (A) the person signing such certificate has made or has caused to be made
such investigations as are necessary to permit him to certify the accuracy of
the information set forth therein, (B) such certificate does not misstate

                                      22
<PAGE>

any material fact and does not omit to state any fact necessary to make the
certificate not misleading, and (C) the other conditions specified in this
Section 7 have been satisfied;
---------

               (ii)  copies (certified by the President, Secretary or
Assistant Secretary of the Company or, if required under Applicable Law, the
applicable Governmental Authority) of the resolutions duly adopted by the Board
of Directors and Stockholders of the Company authorizing the adoption of the
Series A Certificate, Series B Certificate and authorizing the execution,
delivery and performance of this Agreement, the Other Agreements and all other
agreements referred to in this Agreement as being executed at or prior to the
Closing;

               (iii) copies (certified by the Secretary or Assistant
Secretary of the Company) of the Certificate of Incorporation and Bylaws (or
equivalent documents) of the Company and, each of the Subsidiaries listed on
Schedule 7(h)(iii) hereto, in each case as amended through the date of the
------------------
Closing; and

               (iv)  such other documents relating to the transactions
contemplated by this Agreement as any Purchaser may reasonably request.

          (i)  Absence of Material Adverse Effect.  No event or series of
               ----------------------------------
events shall have occurred which has had or could reasonably be expected to have
a Material Adverse Effect.

          (j)  Proceedings.  All corporate and other proceedings of the
               -----------
Company taken or to be taken in connection with the transactions contemplated
hereby and by the Other Agreements to be consummated at the Closing and all
documents incident thereto shall be reasonably satisfactory in form and
substance to each Purchaser.

          (k)  Legends.  Each stock certificate issued by the Company to
               -------
stockholders party to the Stockholder Agreement or Registration Rights Agreement
on or prior to the date of the Closing shall have been stamped or otherwise
imprinted with a legend in substantially the form provided in Section 5.12 of
the Stockholders Agreement and Section 2 of the Registration Rights Agreement.

          (l)  Private Equity Fee.  At the time of the Closing, the Company
               ------------------
shall have paid UBS, a private equity fee of 3% of the purchase price of the
Shares purchased at the Closing.

     8.   Conditions to the Obligations of the Company.  The obligations of the
          --------------------------------------------
Company under this Agreement are subject to the fulfillment on or prior to the
date of the Closing of the following conditions, any of which may be waived in
writing, in whole or in part, by the Company:

          (a)  Representations and Warranties.  On the date of the Closing, each
               ------------------------------
of the representations and warranties of the Purchasers set forth in this
Agreement shall be true and correct in all respects on the date hereof and at
and as of the date of the Closing with the same

                                      23
<PAGE>

effect as though such representations and warranties had been made at and as of
the date of the Closing.

          (b)  Performance.  The Purchasers shall have performed and complied in
               -----------
all material respects with all agreements and conditions contained herein
required to be performed by or complied with by them prior to the Closing.

          (c)  Absence of Litigation.  (i) The consummation of the
               ---------------------
transactions contemplated hereby shall not have been restrained, enjoined or
otherwise prohibited by any Applicable Law, including any order, injunction,
decree or judgment of any court or other Governmental Authority; (ii) no court
or other Governmental Authority shall have determined that any Applicable Law
makes illegal the consummation of the transactions contemplated hereby and no
Action with respect to the application of any such Applicable Law to such effect
shall be pending or threatened; and (iii) no Action shall be pending or shall
have been threatened which seeks to impose liability upon any Company by reason
of the consummation of the transactions contemplated by this Agreement.

          (d)  The Stockholder Notification Period shall have elapsed.

          (e)  The requirements of the Hart-Scott-Rodino Antitrust Improvements
Act of 1976, as amended, or any foreign anti-competition, antitrust or pre-
merger notification rules and regulations, if applicable, shall have been
complied with.

     9.   Survival.  The representations and warranties of the Company set forth
          --------
in Sections 4(a), 4(b), 4(c), 4(d), 4(e), 4(h), 4(j), 4(o), 4(q), 4(t), 4(u) and
4(y) and shall survive the Closing indefinitely.  All other representations and
warranties of the Company contained herein shall expire at the second
anniversary of the Closing. The representations and warranties of the Purchasers
contained herein shall survive the Closing for a period of two years.  All
covenants and agreements contained herein shall survive the Closing
indefinitely.

     10.  Termination.  This Agreement may be terminated:
          -----------

          (a)  by mutual written consent of all of the parties hereto; or

          (b)  by any of the Purchasers by written notice to the Company if any
of the conditions to the Closing set forth in Section 7 shall not have been
fulfilled by 5:00 p.m. New York time on the date which is 60 days from the date
hereof, unless such failure shall be due to the failure of such Purchaser to
perform or comply with any of the covenants, agreements or conditions hereof to
be performed or complied with by it prior to the Closing.

     11.  Effect of Termination.  If this Agreement is terminated pursuant to
          ---------------------
the provisions of Section 10, then this Agreement shall become void and have no
effect, without any liability to any person in respect hereof or of the
transactions contemplated hereby on the part of any party hereto, or any of its
directors, officers, employees, consultants, agents, representatives, advisers,
stockholders or Affiliates except for any liability resulting from such party's
breach or default under this Agreement.

                                      24
<PAGE>

     12.  Miscellaneous Provisions.
          ------------------------

          (a)  Acknowledgment.  Each Purchaser acknowledges and agrees that it
               --------------
has, independently and without reliance upon any other Purchaser, made its own
evaluation and decision to purchase the Series B Preferred Stock to be purchased
by it pursuant to this Agreement.  Each Purchaser further acknowledges that no
other Purchaser has acted as an agent for such Purchaser or the Company in
connection with the purchase of the shares of Series B Preferred Stock hereunder
and will not be acting as an agent for such Purchaser in connection with
monitoring its investment hereunder.

          (b)  Notices.  All notices, requests, demands, approvals, consents,
               -------
waivers or other communications required or permitted to be given hereunder
(each, a "Notice") shall be in writing and shall be (a) personally delivered,
          ------
(b) transmitted by telecopy facsimile, provided that the original copy thereof
also is sent by pre-paid, first class, registered or certified mail (return
receipt requested) or by next-day or overnight mail (to any United States
address), or by an internationally recognized express delivery service (to any
foreign address), (c) sent by first class, registered or certified mail (return
receipt requested) or by next-day or overnight mail (to any United States
address), postage and charges prepaid, or (d) delivered by an internationally
recognized express delivery service (to any foreign address), postage and
charges prepaid:

               (i)  if to any Purchaser, at the address and numbers set forth at
the end of this Agreement, marked for attention as therein indicated;

               (ii) if to the Company, to:

                    IFX Corporation
                    707 Skokie Boulevard
                    Suite 580
                    Northbrook, Illinois 60062
                    Attention:  Chief Executive Officer
                    Telephone Number:  847-412-9411
                    Telecopy Number:  305-574-7867

                    With a copy to:

                    Neal, Gerber & Eisenberg
                    Two North LaSalle Street
                    Chicago, Illinois 60602
                    Attention:  Scott J. Bakal, Esq.
                    Telephone Number:  312-269-8000
                    Telecopy Number:  312-269-1747

                                      25
<PAGE>

or, in each case, at such other address and numbers as may have been furnished
in a Notice by such Person to the other parties.  Any Notice shall be deemed
effective or given upon receipt (or refusal of receipt).

          (c)  Severability.  Should any Section or any part of a Section within
               ------------
this Agreement be rendered void, invalid or unenforceable by any court of law
for any reason, such invalidity or unenforceability shall not void or render
invalid or unenforceable any other Section or part of a Section in this
Agreement.

          (d)  Governing Law.  This Agreement shall be governed by and construed
               -------------
and enforced in accordance with the internal laws of the State of New York
without regard to the principles of conflicts of law thereof.  Each party hereto
hereby irrevocably submits to the nonexclusive jurisdiction of the courts of the
State of New York and of the United States of America sitting in the City of New
York, Borough of Manhattan, for the adjudication of any dispute hereunder or in
connection herewith or with any transaction contemplated hereby or discussed
herein, and hereby irrevocably waives, and agrees not to assert in any suit,
action or proceeding, any claim that it is not personally subject to the
jurisdiction of any such court, that the venue thereof may not be appropriate,
that such suit, action or proceeding is improper or that this Agreement or any
of the documents referred to in this Agreement may not be enforced in or by said
courts, and each party hereto irrevocably agrees that all claims with respect to
such suit, action or proceeding may be heard and determined in such a New York
state or federal court. Each party hereby irrevocably waives personal service of
process and consents to process being served in any such suit, action or
proceeding by mailing a copy thereof to such party in the manner provided in
Section 12(b) and agrees that such service shall constitute good and sufficient
service of process and notice thereof.  Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.
EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO
REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN
CONNECTION HEREWITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION
CONTEMPLATED HEREBY.

          (e)  Publicity.  Except as required by Applicable Law or the
               ---------
requirements of any securities exchange or market (in which case the nature of
the announcement shall be described to the other parties (and the other parties
shall be allowed reasonable time to comment) prior to dissemination to the
public), no party shall make any public announcement in respect of this
Agreement or the transactions contemplated hereby without the prior written
consent of the other parties.

          (f)  Captions and Section Headings.  Captions or section headings
               -----------------------------
contained in this Agreement are inserted as a matter of convenience and for
reference purposes only, and in no way define, limit, extend or describe the
scope of this Agreement or the intent of any provision hereof.

          (g)  Amendments and Waivers.  Neither this Agreement nor any term
               ----------------------
hereof, may be changed, waived, discharged or terminated orally or in writing,
except that any term of

                                      26
<PAGE>

this Agreement may be amended and the observance of any such term may be waived
(either generally or in a particular instance and either retroactively or
prospectively) with (but only with) the prior written consent of the Company and
all the Purchasers; provided, however, that no such amendment or waiver shall
                    --------  -------
extend to or affect any obligation not expressly waived or impair any right
consequent therein.

          (h)  Successors and Assigns.  All rights, covenants and agreements of
               ----------------------
the parties contained in this Agreement shall, except as otherwise provided
herein, be binding upon and inure to the benefit of their respective successors
and assigns.  This Agreement may not be assigned (by operation of law, contract
or otherwise) by any party hereto; provided, however, that each Purchaser may
                                   --------  -------
assign or otherwise transfer its rights and obligations hereunder to:  (i) any
Person who acquires shares of Series B Preferred Stock from any Purchaser or any
successor or assign of any Purchaser; or (ii) any successor-in-interest to
substantially all of such Purchaser's or successor's or assign's business
(whether by stock sale, asset sale or otherwise).

          (i)  Expenses.  The Company agrees to pay the reasonable fees and
               --------
reimburse the reasonable out-of-pocket expenses, including legal and accounting
fees and expenses, of the Purchasers, upon receipt of the bill therefor, in
connection with the transactions contemplated by this Agreement and the Other
Agreement; provided, however, that the Company shall not be obligated to
           --------  -------
reimburse the Purchasers for legal fees which exceed $45,000.  The Company
agrees to reimburse reasonable travel and lodging expenses of the Purchasers in
connection with attendance of the Purchasers' representatives at meetings of the
Board of Directors of the Company and other visits to the Company associated
with exercising or fulfilling any of its rights or obligations under this
Agreement or the Other Agreements.

          (j)  Entire Agreement.  This Agreement (including the attached
               ----------------
Exhibits and Schedules) contains the entire agreement and understanding of the
parties and there are no further or other agreements or understandings, written
or oral, in effect between the parties relating to the subject matter hereof.

          (k)  Exhibits.  The Exhibits and Schedules attached to this Agreement
               --------
hereby are incorporated into and made a part of this Agreement.

          (l)  Further Assurances.  Each party shall cooperate and take such
               ------------------
actions as may be reasonably requested by another party in order to carry out
the provisions and purposes of this Agreement and the Other Agreements and the
transactions contemplated hereby and thereby.

          (m)  Condition to Effectiveness.  This Agreement shall become
               --------------------------
effective only upon its execution and delivery by the Company and each
Purchaser.

          (n)  Counterparts.  This Agreement may be executed (including by
               ------------
facsimile transmission) with counterpart signature pages or in one or more
counterparts, each of which shall be deemed an original but all of which
together shall constitute one and the same instrument.

                                      27
<PAGE>

          (o)  Attorneys' Fees.  If any party initiates any legal action arising
               ---------------
out of or in connection with this Agreement or any of the Other Agreements, the
prevailing party in such legal action shall be entitled to recover from the
other party all reasonable attorneys' fees, expert witness fees and expenses
incurred by the prevailing party in connection therewith.

          (p)  Disclosure Generally.  The Schedule of Exceptions shall be
               --------------------
arranged in sections corresponding to the Sections contained in this Agreement,
and the disclosures in any section of the Schedule of Exceptions shall qualify
only (a) the corresponding section of this Agreement, and (b) other sections of
Section 4 to the extent it is clear (notwithstanding the absence of a specific
cross-reference) from a reading of the exception that such exception is
applicable to such other sections.  The inclusion of any information in the
Schedules shall not be deemed to be an admission or acknowledgment, in and of
itself, that such information is material or has or would have a Material
Adverse Effect, or is outside the ordinary course of business.

          (q)  Covenant of Stockholders.  Each of ITI, Shalom, Eidelstein and
               ------------------------
Casty hereby agrees to execute and deliver the Stockholders Agreement and each
of ITI and Casty will execute and deliver the Registration Rights Agreement at
the Closing.

     13.  Definitions.
          -----------

          (a)  Definitions.  For the purposes of this Agreement, the following
               -----------
terms shall have the meanings specified below:

          "Action" has the meaning set forth in Section 4(g)(i).
           ------                               ---------------

          "Affiliate" of a specified Person means (i) any Person that directly
           ---------
or indirectly, through one or more intermediaries, controls, is controlled by,
or is under common control with, such specified Person, or (ii) in the case of a
natural Person, such Person's spouse, parent or lineal descendant (whether by
blood or adoption and including stepchildren).  "Control" (including the terms
                                                 -------
"controlled by" and "under common control with") means the possession, directly
--------------       -------------------------
or indirectly, of the power to direct or cause the direction of the management
policies of a Person, whether through the ownership of voting securities, by
contract or credit arrangement, as trustee or executor, or otherwise.

          "Agreement" shall mean this Agreement (including the Schedules and
           ---------
Exhibits hereto), as amended, supplemented or modified from time to time in
accordance with the provisions hereof.

          "Applicable Law" shall mean, with respect to any Person, any and all
           --------------
provisions of any constitution, treaty, statute, law, regulation, ordinance,
code, rule, judgment, rule of common law, order, decree, award, injunction,
Governmental Approval, concession, grant, franchise, license, agreement,
directive, guideline, policy, requirement, or other governmental restriction or
any similar form of decision of, or determination by, or any interpretation or
administration of any of the foregoing by, any Governmental Authority, whether
in effect as of

                                      28
<PAGE>

the date hereof or thereafter and in each case as amended, applicable to such
Person or its subsidiaries or their respective assets.

          "Amendment to the 1998 Option Plan" shall mean the amendment to the
           ---------------------------------
1998 IFX Corporation Stock Option and Incentive Plan in form and substance
identical to Exhibit J hereto.
             ---------

          "Benefit Plan" shall mean any plan, agreement or arrangement, formal
           ------------
or informal, whether oral or written, whereby the Company or any Subsidiary
provides any benefit to any present or former officer, director or employee, or
dependent or beneficiary thereof, including any profit sharing, deferred
compensation, stock option performance stock, pension, death benefit or other
fringe benefit, employee stock purchase, bonus, severance, retirement, health or
insurance plan.

          "Board" shall mean the Board of Directors of the Company.
           -----

          "Business" shall mean the business of the Company and each of its
           --------
Subsidiaries.

          "Casty" has the meaning set forth in the first paragraph hereof.
           -----

          "Closing" has the meaning set forth in Section 2.
           -------                               ---------

          "Common Stock" has the meaning set in Section 4(c)(i).
           ------------                         ---------------

          "Company" has the meaning set forth in the first paragraph hereof.
           -------

          "Consent" shall mean any consent, approval, authorization, waiver,
           -------
permit, grant, franchise, concession, agreement, license, exemption or order of,
registration, certificate, declaration or filing with, or report or notice to,
any Person, including any Governmental Authority.

          "Contracts" has the meaning set forth in Section 4(m)(i).
           ---------                               ---------------

          "Contracts Schedule" has the meaning set forth in Section 4(m)(i).
           ------------------                               ---------------

          "Conversion Shares" has the meaning set forth in Section 4(c)(iv).
           -----------------                               ----------------

          "Convertible Securities" shall mean (i) any rights, options or
           ----------------------
warrants issued by the Company or any of its Subsidiaries to acquire Common
Stock or any capital stock of the Company or any Subsidiary, including the
shares of Series B Preferred Stock to be issued hereunder, (ii) any notes,
debentures, shares of preferred stock or other securities, options, warrants or
rights issued by the Company or any of its Subsidiaries, which are convertible
or exercisable into, or exchangeable for, Common Stock or any capital stock of
the Company or any Subsidiary and (iii) any contractual or other obligation
(whether fixed, contingent or otherwise) to issue shares of capital stock or
other securities of the Company or any Subsidiary in

                                      29
<PAGE>

connection with the acquisition of any securities, business or enterprise
(including any Internet Service Provider).

          "$" or "dollars" shall mean lawful money of the United States of
           -      -------
America.

          "Eidelstein" has the meaning set forth in the first paragraph hereof.
           ----------

          "Encumbrance" shall mean any lien, encumbrance, hypothecation, right
           -----------
of others, proxy, voting trust or similar arrangement, pledge, security
interest, collateral security agreement, limitations on voting rights,
limitations on rights of ownership filed with any Governmental Authority, claim,
charge, equities, mortgage, pledge, objection, title defect, title retention
agreement, option, restrictive covenant, restriction on transfer, right of first
refusal, right of first offer, statutory or contractual preemptive right or any
comparable interest or right created by or arising under Applicable Law, of any
nature whatsoever.

          "Environmental Law" means any United States federal, state, local or
           -----------------
foreign law, statute, rule or regulation or the common law relating to the
protection of human health or the environment, including, without limitation,
CERCLA (as defined below), the United States federal Resource Conservation and
Recovery Act of 1976 as amended (the "Recovery Act"), any statute, regulation or
                                      ------------
order pertaining to (i) treatment, storage, disposal, generation and
transportation of industrial, toxic or hazardous materials or substances or
solid or hazardous waste; (ii) air, water and noise pollution; (iii) groundwater
and soil contamination; (iv) the release or threatened release into the
environment of industrial, toxic or hazardous materials or substances, or solid
or hazardous waste, including, without limitation, emissions, discharges,
injections, spills, escapes or dumping of pollutants, contaminants, or
chemicals; (v) the protection of wild life, marine life and wetlands, including,
without limitation, all endangered and threatened species; (vi) storage tanks,
vessels, abandoned or discarded barrels, containers and other closed
receptacles; (vii) health and safety of employees and other persons; and (viii)
manufacture, processing, use, distribution, treatment, storage, disposal,
transportation or handling of pollutants, contaminants, toxic or hazardous
materials or substances or oil or petroleum products or solid or hazardous
waste.  As used herein, the terms "release" and "environment" has the meaning
set forth in the United States federal Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended ("CERCLA").
                                                     ------

          "Fully Diluted Basis" shall mean, when used with respect to
           -------------------
outstanding shares of Common Stock, all shares of Common Stock which would be
outstanding after giving effect to the transactions contemplated by this
Agreement and assuming the exercise, conversion or exchange of all Convertible
Securities.

          "GAAP" shall mean United States generally accepted accounting
           ----
principles consistently applied.

          "Governmental Approvals" shall mean any action, order, authorization,
           ----------------------
consent, approval, license, lease, waiver, franchise, concession, agreement,
license, ruling, permit, tariff,

                                      30
<PAGE>

rate, certification, exemption of, filing or registration by or with, or report
or notice to, any Governmental Authority.

          "Governmental Authority" shall mean any nation or foreign or domestic
           ----------------------
government, any state or other political subdivision thereof, any entity
exercising executive, legislative, judicial, regulatory or administrative
functions of or pertaining to government (including, without limitation, any
government authority, agency, department, board, commission or instrumentality
of the United States, any State of the United States or any political
subdivision thereof), or any tribunal or arbitrator(s) of competent
jurisdiction, or any self-regulatory organization.

          "include", "includes", "included" and "including" shall be construed
           -------    --------    --------       ---------
as if followed by the phrase "without being limited to".

          "Intellectual Property" shall mean any and all worldwide,
           ---------------------
international, U.S. and/or foreign, patents, all applications therefor and all
reissues, reexaminations, continuations, continuations-in-part, divisions, and
patent term extensions thereof, inventions (whether patentable or not),
discoveries, improvements, concepts, innovations, industrial models, registered
and unregistered copyrights, copyright registrations and applications, author's
rights, works of authorship (including any text or artwork of any kind, and
software of all types in whatever medium, inclusive of computer programs, source
code, object code and executable code, and related documentation), URLs, web
sites, web pages and any part thereof, technical information, know-how, trade
secrets, drawings, designs, design protocols, specifications for parts and
devices, quality assurance and control procedures, design tools, manuals,
research data concerning historic and current research and development efforts,
including the results of successful and unsuccessful designs, databases and
proprietary data, proprietary processes, technology, engineering, discoveries,
formulae, algorithms, operational procedures, trade names, trade dress,
trademarks, domain names, and service marks, and registrations and applications
therefor, the goodwill of the business symbolized or represented by the
foregoing, customer lists and other proprietary information and common-law
rights.

          "ITI" has the meaning set forth in the first paragraph hereof.
           ---

          "Material Adverse Effect" shall mean any event, circumstance,
           -----------------------
occurrence, fact, condition, change or effect that is materially adverse to (i)
the Business, operations, results of operations, financial condition, prospects,
properties, assets or liabilities of the Company and its Subsidiaries, taken as
a whole, or (ii) the ability of the Company to perform fully its obligations
hereunder and under the Other Agreements and to consummate the transactions
contemplated hereby and thereby.  For the purposes of this Agreement, a currency
devaluation or foreign exchange restriction or other actions by any Governmental
Authority limiting repatriation of capital or any other material change in the
governmental or political climate of the countries in which the Company or its
Subsidiaries carry out the Business shall be deemed to have a Material Adverse
Effect.

          "Material Instruments" has the meaning set forth in Section 4(e).
           --------------------                               ------------

                                      31
<PAGE>

          "Materials of Environmental Concern" means any chemicals, pollutants
           ----------------------------------
or contaminants, hazardous substances (as such term is defined under CERCLA),
solid wastes and hazardous wastes (as such terms are defined under the Recovery
Act), toxic materials, oil or petroleum and petroleum products, or any other
material subject to regulation under any Environmental Law.

          "Notice" has the meaning set forth in Section 12(b).
           ------                               -------------

          "Other Agreements" has the meaning set forth in Section 4(b)(i).
           ----------------                               ---------------

          "Per Share Price" has the meaning set forth in Section 2.
           ---------------                               ---------

          "Performance-Based Stock Option Plan" shall mean the IFX Corporation
           -----------------------------------
2001 Stock Option plan to be adopted by the Company in form and substance
identical to Exhibit H hereto.
             ---------

          "Person" or "person" shall mean any natural person, company,
           ------      ------
corporation, association, partnership, organization, business, firm, joint
venture, trust, unincorporated organization or any other entity or organization,
and shall include any Governmental Authority.

          "Preferred Stock" has the meaning set forth in Section 4(c)(i).
           ---------------                               ---------------

          "Qualified Public Offering" shall mean an underwritten public offering
           -------------------------
of shares of Common Stock for which the Company has obtained a firm commitment
from one or more underwriter(s) for at least $60 million of Common Stock and in
which the Company receives gross proceeds from the sale of Common Stock to the
public of at least $45 million (before deduction of underwriter's discounts and
commissions), and which values the equity of the Company at no less than $200
million pre-offering.

          "Registration Rights Agreement" means the Amended and Restated
           -----------------------------
Registration Rights Agreement to be entered into among the Company and the
stockholders of the Company, in form and substance identical to Exhibit F
                                                                ---------
hereto.

          "Requisite Stockholders" means UBS, Casty Grantor Subtrust, Lee S.
           ----------------------
Casty, Michael Shalom, International Technology Investments, LC and Joel
Eidelstein and their respective Affiliates holding voting stock of the Company.

          "Schedule of Exceptions" has the meaning set forth in the first
           ----------------------
paragraph of Section 4.
             ---------

          "Schedule of Purchasers" has the meaning set forth in the first
           ----------------------
paragraph hereof.

          "Securities Act" has the meaning set forth in Section 4(i).
           --------------                               ------------

                                      32
<PAGE>

          "Series A Certificate" means the Amended and Restated Certificate of
           --------------------
Designation, Numbers, Powers, Preferences and Relative, Participating, Optional
and Other Rights of Series A Preferred Stock in form and substance identical to
Exhibit I attached hereto.
---------

          "Series A Preferred Stock" has the meaning set forth in Section
           ------------------------                               -------
4(c)(i).
-------

          "Series B Certificate" has the meaning set forth in Section 1(a).
           --------------------                               ------------

          "Series B Preferred Stock" has the meaning set forth in Section 1(a).
           ------------------------                               ------------

          "SEC" shall mean the U.S. Securities and Exchange Commission or any
           ---
successor agency thereto.

          "SEC Reports" has the meaning set forth in Section 4(w).
           -----------                               ------------

          "Shalom" has the meaning set forth in the first paragraph hereof.
           ------

          "Shares" shall have the meaning set forth in Section 2.
           ------                                      ---------

          "Stock Option Plan" means the IFX Corporation Directors Stock Option
           -----------------
Plan and the 1998 IFX Corporation Stock Option and Incentive Plan.

          "Stockholder Notification Period" means the twenty (20) calendar day
           -------------------------------
period after the Information Statement is sent or given to the Company's
stockholders pursuant to Rule 14c-2(b) promulgated under the Securities Exchange
Act of 1934, as amended.

          "Stockholders Agreement" means the Amended and Restated Stockholders
           ----------------------
Agreement to be entered into among the Company and the stockholders of the
Company, in form and substance identical to Exhibit E hereto.
                                            ---------

          "Subsidiary" means any Person of which equity securities possessing a
           ----------
majority of (i) the ordinary voting power in electing the board of directors, or
(ii) the outstanding capital stock or other equity interests, are, at the time
as of which such determination is being made, owned by the Company either
directly or indirectly through one or more Subsidiaries.

          "Taxes" shall mean any domestic or foreign taxes, charges, feed,
           -----
levies or other assessments, including any income, alternative, minimum,
accumulated earnings, personal holding company, franchise, capital stock, net
worth, capital, profits, windfall profits, gross receipts, value added, sales,
use, goods and services, excise, customs duties, transfer, conveyance, mortgage,
registration, stamp, documentary, recording, premium, severance, environmental,
real property, personal property, ad valorem, intangibles, rent, occupancy,
license, occupational, employment, unemployment insurance, social security,
disability, worker's compensation, payroll, health care, withholding, estimated
or other taxes, charges, fees, levies or other assessments, and including any
interest, penalties or additions relating thereto, imposed by any Governmental
Authority or other taxing authority.

                                      33
<PAGE>

          "Transaction" has the meaning set forth in Section 6(d).
           -----------                               ------------

          "UBS" shall mean (i) UBS Capital Americas III, L.P., a Delaware
           ---
limited partnership, (ii) UBS Capital LLC, a Delaware limited liability company
and (iii) any Affiliate of either of the foregoing entities, individually and
collectively.

          (b)  Other Definitional Provisions.  The words "hereof", "herein", and
               -----------------------------              ------    ------
"hereunder" and words of similar import shall refer to this Agreement as a whole
 ---------
and not to any particular provision of this Agreement.  Terms defined in the
singular shall have a comparable meaning when used in the plural and vice versa.
Whenever a representation or warranty made by a Person herein refers to the
knowledge of such Person, such knowledge shall be deemed to consist of the
actual knowledge of such Person or the knowledge which would have been present
after reasonable due inquiry by such Person.  A Person (other than an
individual) will be deemed to have "knowledge" of a particular fact or other
                                    ---------
matter if any individual who is serving, or who has at any time served, as a
director, executive officer, member, partner, executor or trustee of such Person
(or a Person acting in any similar capacity) has, or any time had, actual
knowledge of such fact or other matter, or should have had knowledge thereof
given such individual's office or capacity and given industry standards or given
reasonable due inquiry by such individual.

                                      34
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement as of the date first above written.

                                            IFX CORPORATION

                                         By: /s/ Michael Shalom
                                             -----------------------
                                             Name: Michael Shalom
                                             Title: President

Agreed and Accepted only as to
Section 12(q) hereof:

CASTY GRANTOR SUBTRUST

By:  /s/ Mary Meyers
     --------------------------
     Name: Mary Meyers
     Title: Trustee

INTERNATIONAL TECHNOLOGY
INVESTMENTS, LC

By:  /s/ Michael Shalom
     --------------------------
     Name: Michael Shalom
     Title:

/s/ Michael Shalom
-------------------------------
Michael Shalom

/s/ Joel Eidelstein
-------------------------------
Joel Eidelstein
<PAGE>

Purchaser:
---------

     The undersigned hereby executes and delivers this Agreement as of the date
first above written as one of the Purchasers referred to therein for the purpose
of purchasing from the Company the applicable Shares at the Closing.

                                         UBS CAPITAL AMERICAS III, L.P.

                                         By: UBS Capital Americas III, LLC

                                             By: /s/ Mark Lama
                                                 ----------------------------
                                                 Name: Mark Lama
                                                 Title: Principal

                                             By: /s/ Marc Unger
                                                 ---------------------------
                                                 Name: Marc Unger
                                                 Title: Chief Financial Officer

Address:       UBS Capital Americas III, L.P.
               c/o UBS Capital Americas III, LLC
               299 Park Avenue
               New York, NY 10171
               Attention: Charles W. Moore
Telephone No.: (212) 821-6330
Telecopy No.:  (212) 821-6333

With a copy
of Notices to: Kaye, Scholer, Fierman, Hays & Handler, LLP
               425 Park Avenue
               New York, New York 10022
               Attention: Nancy Fuchs, Esq.
Telephone No.: (212) 836-8565
Telecopy No.:  (212) 826-7246
<PAGE>

Purchaser:
---------

     The undersigned hereby executes and delivers this Agreement as of the date
first above written as one of the Purchasers referred to therein for the purpose
of purchasing from the Company the applicable Shares at the Closing.

                                                  UBS CAPITAL LLC

                                                  By: /s/ Mark Lama
                                                      --------------------------
                                                      Name: Mark Lama
                                                      Title: Attorney-in-Fact

                                                  By: /s/ Marc Unger
                                                      --------------------------
                                                      Name: Marc Unger
                                                      Title: Attorney-in-Fact

Address:       UBS Capital LLC
               299 Park Avenue
               New York, NY  10171
               Attention: Charles W. Moore
Telephone No.: (212) 821-6330
Telecopy No.:  (212) 821-6333

With a copy
of Notices to: Kaye, Scholer, Fierman, Hays & Handler, LLP
               425 Park Avenue
               New York, New York 10022
               Attention: Nancy Fuchs, Esq.
Telephone No.: (212) 836-8565
Telecopy No.:  (212) 826-7246
<PAGE>

                                   EXHIBIT A

                            SCHEDULE OF PURCHASERS

                                IFX Corporation

                           Series B Preferred Stock

               --------------------------------------------------
                         Purchaser              Number of Shares
                         ----------             ----------------
               --------------------------------------------------
               UBS Capital Americas III, L.P.      4,197,349
               --------------------------------------------------
               UBS Capital LLC                       220,913
               --------------------------------------------------
<PAGE>

                                   EXHIBIT B

              CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS
                                      OF
                           SERIES B PREFERRED STOCK
                                      OF
                                IFX CORPORATION

     See attachment hereto.
<PAGE>

                                   EXHIBIT C

                            SCHEDULE OF EXCEPTIONS

     See attachment hereto.
<PAGE>

                                   EXHIBIT D

                      FORM OF OPINION OF COMPANY COUNSEL

     See attachment hereto.
<PAGE>

                                   EXHIBIT E

                      FORM OF SECOND AMENDED AND RESTATED
                            STOCKHOLDERS AGREEMENT

     See attachment hereto.
<PAGE>

                                   EXHIBIT F

                         FORM OF AMENDED AND RESTATED
                         REGISTRATION RIGHTS AGREEMENT

     See attachment hereto.
<PAGE>

                                   EXHIBIT G

                   FORM OF TUTOPIA STOCK PURCHASE AGREEMENT

     See attachment hereto.
<PAGE>

                                   EXHIBIT H

                  FORM OF PERFORMANCE-BASED STOCK OPTION PLAN

     See attachment hereto.
<PAGE>

                                   EXHIBIT I

                             AMENDED AND RESTATED
              CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS
                                      OF
                           SERIES A PREFERRED STOCK
                                      OF
                                IFX CORPORATION

     See attachment hereto.

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