| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless LAN system which controls the permission/non- permission of communication, based on identification information of a radio communication terminal, which is previously registered in a memory. SOLUTION: In the wireless LAN system performing data communication between the radio communication terminals via an access point device, the access point device previously registers the serial number or MAC address of the radio communication terminal, whose communication is permitted in the memory as identification information. When a packet is transmitted from the radio communication terminal, it is checked as to whether the security flag of the received packet is already raised When it is not raised, the transmission address of the received packet is obtained and it is checked whether the address is matched with identification information of the memory. When the transmission address exists in identification information of the memory, the access point device raises the security flag of the received packet and transmits it to the radio communication terminal. When the security flag is raised or the transmission address does not exist in identification information of the memory, the pertinent packet is canceled (steps S301 to S306). |
