| 摘要 |
<p>A network communication system includes a network (7), a system of authentication servers (5), and a terminal (1). The system of the authentication servers includes a plurality of servers (501, 502) that execute a predetermined process in response to an authentication request from the terminal (1). The terminal (1) includes a connection destination list storage unit (43) that stores information concerning a preset prioritized connection order of connection with the server, fault determining means (204) that, when an authentication request is made to the server, determines whether a traffic fault occurs on the server, and priority order setting means (203) that, if the fault determining means determines that a traffic fault occurs on the server, changes connection to a next server in accordance with the connection order. The server performs an authentication process as much as possible even while the server is under a DOS/DDOS attack.</p> |
