| 摘要 |
PROBLEM TO BE SOLVED: To prevent any overlapped log-in in web access from a plurality of client computers using the same user authentication information without having to add special devices. SOLUTION: This method comprises a first for issuing session information for determining overlapped log-in, in response to an access request from a client computer to a web page managed by a WWW server and storing the issued information in the client computer which is the origin of the access request and in a session information storing means, a second step for enabling the client computer which is the origin of the access request to return, in the next access request, the session information for determining the overlapped log-in issued in the previous access request, and a third step for determining whether the session information matching the returned session information is stored in the session information storing means, and determining that the overlapped log-in, based on the same user authentication information, has been performed when the session information is not stored, and rejecting web page browsing. |
