INFORMATION COMMUNICATION SYSTEM, INFORMATION COMMUNICATION METHOD, AND RECORDING MEDIUM HAVING INFORMATION COMMUNICATION PROGRAM STORED THEREON

An information communication system for exchanging a plurality of contents between a plurality of node devices, includes a plurality of internal networks connected to an external network. The internal networks include: node devices that connects the same internal network; and a support device, which connects the internal network, and which supports acquisition of contents by the node devices. An internal overlay network is constructed for each of the internal networks. An external overlay network is constructed on the external network. Each of the node devices includes a first acquisition unit that acquires contents from a first internal overlay network, which is an access destination of the first acquisition unit. If it is unable to acquire the contents from the first internal overlay network, the first acquisition unit acquires contents from one of the support devices through a first support device, which is a support device connecting the first internal network.