| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To detect an unauthorized user, who assumes a false user ID, or an unauthorized terminal, which assumes a false MAC address, by displaying a move history of an authentication user between authentication switches. <P>SOLUTION: Authentication log information items of authentication switches and an authentication server are collected into one, and the information is analyzed. An authentication log 230 of the authentication server 200 is information obtained, by merging authentication logs 110 of a plurality of authentication switches 100 and an authentication log 220 of the authentication server 200. By utilizing information of the authentication log 230, an unauthorized user who is assuming a unauthorized user ID, is detected. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
