| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a communication control technique for appropriately performing secure communication. <P>SOLUTION: A communication control method by which a VPN (Virtual Private Network) server performs communication with a specified VPN client device which performs a VPN connection, and is executed by an application gateway server which controls access to a specified server, includes a step to receive an IP address of a VPN client device which is permitted to access the specified server, and stores it in a memory device; and a discriminating step which discriminates whether access to the specified server by a communication means different from the VPN connection, is permitted or not based on an IP address of a transmitter of the access request data and the IP address stored in the memory device, when the access request data is received by a communication means different from the VPN connection in a condition that the VPN connection is established between a VPN server and the VPN client device. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
