Method of limiting communication access between wireless LAN terminals
First Claim
1. 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.
1 Assignment
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Accused Products
Abstract
Different subnets are allocated to respective wireless LAN terminals. It is assumed that when the setting of IP addresses is completed, a packet is to be sent from wireless LAN terminal 1 to wireless LAN terminal 2. Since the different subnets are allocated to respective wireless LAN terminals 1, 2, wireless LAN terminals 1, 2 are unable to communicate directly with each other. Wireless LAN terminal 1 sends a packet destined for wireless LAN terminal 2 to a default gateway (=access limiter). Since the packet received by the access limiter is destined for wireless LAN terminal 2, the access limiter transfers the packet to wireless LAN terminal 2.
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Citations
16 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless LAN system, comprising:
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a wireless LAN access point configured to wirelessly associate with a plurality of wireless terminals, said plurality of wireless terminals being wirelessly connected; an access limiter configured to control communications between a first of the plurality of the wireless terminals and a second of the plurality of the wireless terminals at the wireless LAN access point; a band limiter to buffer a received packet to process audio packets with priority over other packets; a router to distribute 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, wherein the first wireless terminal and the second wireless terminal communicate through the access limiter, and wherein each of the first wireless terminal and the second wireless terminal are allocated different subnetwork addresses. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A wireless network router, comprising:
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a wireless access point; and an access limiter comprising a plurality of Local Address Network (LAN) interfaces associated to the wireless access point, the access limiter comprising; an access limiting apparatus to pass or drop a received packet to thereby inhibit or permit communications between a plurality of wireless terminals, said plurality of wireless terminals being wirelessly connected; a routing apparatus for distributing packets selectively between the wireless LAN access point depending on a destination of the packets between the plurality of wireless terminals; a band limiter to buffer a received packet to process audio packets with priority over other packets; a router to distribute 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, wherein communication between any of the plurality of wireless terminals is routed through the access limiter, and wherein each of the wireless terminals is allocated a different subnetwork address. - View Dependent Claims (15, 16)
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Specification