Packet relay system

Details Packet relay system Packet relay system

2006-04-20

2009-02-10

Shah, Chirag G (Department: 2419)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

Reexamination Certificate

active

07489682

ABSTRACT:
A packet relay system requests a peripheral apparatus to perform filtering and enhances the quality of packet relaying. A path establishment block establishes a request path on which a packet to be proxy-filtered is sent and a return path on which a proxy-filtered packet is received. A request source filter status determination block determines whether the packet requires a request to perform proxy filtering, does not require the request, or has already been proxy-filtered. A filtering request block generates a filtering request packet by inserting a request path identifier into the packet. A proxy filter status determination block determines whether the packet requires proxy filtering or not when the filtering request packet is received. A proxy filtering block searches through a proxy filter table by the request path identifier. A filtering return block generates a proxy filtering packet by inserting a return path identifier, when the packet can be relayed.

REFERENCES:
patent: 7362763 (2008-04-01), Wybenga et al.
patent: 2004/0162992 (2004-08-01), Sami et al.
patent: 06-097965 (1994-04-01), None
patent: 2004-201164 (2004-07-01), None

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