| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a relay server that can construct a VPN capable of flexibly coping with the situation even if setting has been changed after the start of a virtual network. <P>SOLUTION: A relay server comprises a VPN group information storage unit, an address filter information storage unit, and a communication control unit. The VPN group information storage unit stores identification information of routing devices constituting a VPN group and routing session information. The address filter information storage unit stores address filter information indicating a communication partner which a routing device can specify as a transmission destination of a packet by associating the address filter information with the identification information of the routing device. The communication control unit performs control of giving a notice of updated content when the address filter information associated with the identification information of its own device is updated after the start of a VPN for a VPN group. <P>COPYRIGHT: (C)2012,JPO&INPIT |
