| 摘要 |
PROBLEM TO BE SOLVED: To prevent an invalid user from invading to a network by a host machine deciding whether machine inherent information that is sent from a client machine that makes an access request coincides with machine inherent information that is registered in accordance with a user's ID which is simultaneously sent or not. SOLUTION: A client machine CM sends a user's ID and a password, and a host machine HM collates whether the sent user's ID is registered in a user's database 10 or not and identify the user to a communication of the machine CM side. When a user's ID is unmatching, the machine HM requests the machine CM to resend this user's ID, and if it is unmatching again, the machine HM disconnects the line. In the case of matching, after that, the access of the machine CM to the machine HM is allowed. However, if it is unmatching, a regular access is not allowed, and, for instance, a temporary access is allowed. |
