Patent ID: 7437552
Filing Date: 2008-10-14
Classification: H04L

Abstract:
1. A user authentication system comprising: a communication terminal; address bestowal means for, at the time that access was made from the communication terminal, giving to the communication terminal a temporary address that is accessible by an internet; authentication-time Web access means for, at the time that said communication terminal made use of the temporary address given by the address bestowal means to request authentication, causing said communication terminal to make an input operation on a Web display picture, which is displayed at the time of internet access, taken as a picture for the authentication; authentication means for authenticating the user terminal in response to the input operation; and normal-IP-address bestowal means for giving to the communication terminal a normal IP address in response to the authentication means determining that the communication terminal is authenticated, wherein said address bestowal means and said authentication means are connected through an IP management network which facilitates authentication of the communication terminal to the predetermined network.