Patent ID: 7729324

Claim:
A method of limiting communication access between wireless Local Area Network (LAN) terminals of a wireless LAN, said wireless LAN terminals comprising a first wireless LAN terminal and a second wireless LAN terminal, the first wireless LAN terminal and the second wireless LAN terminal being wirelessly connected, comprising: allocating different subnetwork addresses to respective wireless LAN terminals in a wireless LAN access point; setting default gateways of the respective wireless LAN terminals as a single access limiter; and returning a communication packet between the wireless LAN terminals from said access limiter which is set as said default gateways, for providing an access limiting function to limit communication access between the wireless LAN terminals, wherein said access limiter comprises two LAN interfaces connected respectively to a wired terminal and said wireless LAN access point, said wireless LAN terminals being connected to said wireless LAN access point, said access limiter comprising: an access limiting function for passing or dropping a received packet to thereby inhibit or permit communications between the terminals; a band limiting function for buffering a received packet to process audio packets with priority over other packets; a routing function for distributing packets selectively to said wired terminal and said wireless LAN access point depending on a destination of the packets; a Dynamic Host Configuration Protocol (DHCP) server for allocating IP addresses having different subnets for the respective terminals in response to DHCP requests from said wired LAN terminals; and an Address Resolution Protocol (ARP) server installed in an existing IP protocol stack.