INFORMATION PROCESSING SYSTEM, TUNNEL COMMUNICATION DEVICE, TUNNEL COMMUNICATION METHOD, PROXY RESPONSE DEVICE, AND PROXY RESPONSE METHOD

摘要

Provided is an information processing system and the like that can make a communication between plural information processing devices belonging to different LANs. A first tunnel communication device includes a first address correlating information storage unit that stores information for correlating an address in a first LAN with an address in a second LAN, a first address translating unit that translates an address of a packet on the basis of the correlating information, a first P2P communication setup unit that sets up a P2P communication with a device as a destination, and a first tunnel communication unit that makes a tunnel communication through a path of a P2P communication. The packet transmitted from a first information processing device is translated in address, is encapsulated, and is then transmitted through the path of the P2P communication. The packet transmitted from the device as a destination is decapsulated, is translated in address, and is then transmitted to the first information processing device.