Patent ID: 8874911

Claim:
A connection management server used in a system that comprises the connection management server, a first terminal device and a second terminal device, said connection management server comprising: a control unit; a memory having a program stored thereon that, when executed by the control unit, causes the connection management server to: hold a first global IP address, a first local IP address, and first authentication information of the first terminal device in association with one another in a server-side storage unit; receive a connection request that is transmitted by the second terminal device to the first terminal device as a destination and that includes a second global IP address of the second terminal device; determine whether the first global IP address of the first terminal device held in the server-side storage unit matches the second global IP address of the second terminal device included in the connection request; and transmit the first local IP address and the first authentication information of the first terminal device held in the server-side storage unit to the second terminal device if the control unit determines that the first global IP address matches the second global IP address.