| 摘要 |
The present invention provides a LAN device 20 having an internal function of controlling communication. A management representative of the LAN device 20 sets a protocol applicable for communication with regard to each of MAC addresses or IP addresses allocated to transmitter terminals and each of IP addresses allocated to receiver terminals. The LAN device transmits data in the case of the protocol applicable for communication, while not transmitting data in the case of any protocol inapplicable for communication.
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