Newsgroup: it.comp.sicurezza.varie
Titolo: Proxy server anonimi e quelli Hight anonimi

CIAO
Qual'e` la differenza tra i proxy server anonimi e quelli Higth
(mi pare) anonimi?
GRAZIE 
CIAO
AMAB 
E-Mail: 
am...@amab01.it
 
ICQ Number: 136304589 
.NET PassPort: 
am...@amab01.it

 (mi pare) anonimi?
Higth non vuol dire nulla, forse high... il che la direbbe lunga 
sull'argomento. Per una proprietą booleana come "anonimo" (o lo sei, o non 
lo sei) il fatto che ci siano gli "anonimi" e quelli "molto anonimi" ti 
dovrebbe far riflettere un tantino. 

...

E` proprio questo che non riesco a capire poiche` o sei o non sei
anonimo. Eppure, si sara` pure qualche differenza. Boh!!!!!!!!!!!!!!!!
Aspetto qualche altra risposta.
GRAZIE
CIAO

 (mi pare) anonimi?
dall'help di a4proxy:
Most of the settings on this tab allow you to set filters on the proxy
servers and control their behavior. You can also change the port which is
used by A4Proxy for communication with your browser (Browser port)
Proxy servers that don't satisfy the requirements set with filters are
marked with a red cross () on the list. The first group of options allows
you to prevent A4Proxy from using proxy servers that send the following
variables (request headers) to websites:
HTTP_VIA -  This is the basic filter. The HTTP_VIA parameter tells the web
server that you are accessing it via a proxy server. When you select this
filter, you disable all proxies that use this variable.
Presence of this variable in the request to a website reveals the fact
that you are using a proxy. The information contained in it tells the
website something about the proxy itself, not about your machine.
HTTP_FORWARDED - Similar to HTTP_VIA. Shows the proxy address and port
through which the request was made.
HTTP_USER_AGENT_VIA - Again, this is similar to the previous. In some
cases this variable shows via what proxy the request was made.
HTTP_CACHE_CONTROL and HTTP_CACHE_INFO - The presence of either of these
two variables can also tell the website that you are accessing it via a
proxy. These variables contain information about the cache of the proxy
server.
HTTP_[PROXY]_CONNECTION: Close - in most cases, connection type "close"
demonstrates that a proxy server is being used (browsers use connection
type "Keep-Alive")
Other options:
Use new proxy on each request - Select this option to use a different
proxy for each request (the proxies are picked from those that satisfy
limitations set with filters). If you select this option, each page you
request will be brought to you by a different proxy server, and your
requests will look for the resource server as if many different people
were accessing it at the same time. However, it may make the connection
slower.
Use n proxies from position... - you can sort proxies simply by clicking
on the header of a column on the Proxy Check tab. and use proxies in
conjunction with Use new proxy on each request option. The proxies are
counted from the top.
Connection: Keep-Alive only - There are basically two type of connections:
so called Close and Keep-Alive. The first is typical of proxy servers, the
second is used by browsers for direct connections. Some proxy servers
support the Keep-Alive type, therefore making it possible for the request
look as if it was made by a directly-connected browser. This option
restricts the range of proxies to only those that support Keep-Alive
connections.
Presence of the Proxy_(Connection) variable in the request to the website
shows that the request is made via a proxy server. If you want to remove
this variable from the requests, select this option. However, some
websites do not accept connections without this variable. Also, some
proxies modify this header themselves, according to their own settings.
Simulate HTTP_X_FORWARDED_FOR_IP (HTTP_CLIENT_IP) - these variables
substitute the real IP address with a random one, emulating proxy requests
for random clients.
Anonymity Check Options:
Check for anonymity on each request - If this option is selected, A4Proxy
always checks the current proxy for anonymity before sending out a request.
Check for FTP/HTTPS support on Reset Data - Select this option if you want
to conduct full checking of the features of the proxy servers when you
check them with resetting all data (that is when Reset Data option on the
Proxy Options Tab is enabled).
Additional Options:
Default Proxy - the proxy server used by default (in other words, when the
client is not present on the list of CLIENT-PROXY Server Associates, and
option Use new proxy on each request is disabled) You can recognize the
default proxy on the proxy list by this icon: 
Proxies in use - This indicator shows the number of proxy servers that
meet the current user requirements.
Anonymity rank: This indicator shows the relative degree of anonymity in
connection with the currently selected filters and other options
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www.inetprivacy.com
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Potrebbe essere la differenza di "anonimità" che garantiscono? Ad 
esempio è possibile che un proxy anonimo memorizzi ugualmente i log 
delle persone connesse senza tuttavia ritrasmettere sul momento le 
informazioni del client, mentre un proxy "altamente anonimo" se ne frega 
di memorizzare i log su computer in modo tale da non poter ricaare le 
identità dei client nemmeno se la polizia lo richiedesse ...
Tuttavia sono solo supposizioni quindi ... prendetele così come sono!!
Ciao a Tutti, Dagart.