Patent ID: 7035917
Filing Date: 2006-04-25
Classification: H04L

Abstract:
1. A main unit address restricted notification system comprising: a main unit, two or more subordinate terminals which send, for acquiring an IP address of said main unit at a connection start, a DHCP message to which terminal identification information is attached at a connection start, an address administration unit having a terminal identification information authorizing part which authorizes terminal identification information attached to said DHCP message and a DHCP server function part which notifies only terminals which have passed the authorization of IP address information, and a transmitting line which connects said main unit, said subordinate terminals, and said address administration unit, wherein said DHCP server function part attaches an assigned IP address and also main unit IP address information to a DHCP message to terminals which have passed authorization and attaches only the assigned address IP address to a DHCP message to terminals which have failed in authorization.