VPN CONNECTION DEVICE, PACKET CONTROL METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a technology for performing communication even when private addresses to be attached to a host device at each VPN-connected base overlap.

SOLUTION: A VPN connection device is provided with: a means for generating a virtual address associated with an opposite host device which uses a VPN on the side of an opposite VPN connection device; a storage means for storing VPN transfer condition information including the virtual address and the address of the host device which is connected to the VPN connection device and uses the VPN; a determination means which receives a packet having the virtual address as a destination address from the host device connected to the VPN connection device and determines whether or not a combination of the destination address of the packet and a transmission source address is included in the VPN transfer condition information stored to the storage means; and a packet control means for using the VPN to transmit the packet to the opposite VPN connection device when it is determined by the determination means that the combination is included.

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