Patent ID: 7703129

Claim:
An authentication system for a dial-up networking connection via a terminal, the system comprising: a computer for providing an authentication request, wherein the authentication request comprises an authentication ID and a password, and for communication with a network; and a terminal for receiving the authentication request, for generating a first acknowledgment responsive to the authentication request, for transmitting the first acknowledgment to the computer, for forwarding to the network the authentication request, without an authentication ID and a password from a list of previously stored authentication IDs and passwords, upon determining that the authentication ID and the password of the received authentication request exist in the list of previously stored authentication IDs and passwords, and for receiving from the network a second acknowledgment responsive to the forwarded authentication request, wherein the terminal is configured for discarding the second acknowledgement received from the network when the second acknowledgement is positive, and for notifying the computer that authorization is denied when the second acknowledgement is negative.