Network terminal device, address management server, communication system, and network communication method using mac addresses to determine the ip target addresses

摘要

The present invention is intended to offer network terminal devices and an address management server which can communicate with a remote terminal without manually managing the IP address of the remote terminal. A network communication method therefor is also offered. The MAC address of a local terminal, the MAC address of the remote terminal, and the IP address of the address management server are stored in terminal devices. These terminal devices are connected with a network, and an IP address is gained. An inquiry of an IP address corresponding to the MAC address of the remote terminal is made to the address management server. When a response of the IP address of the remote terminal is made from the address management server, an access is made to this IP address.