Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2008-01-01
2008-01-01
Chan, Wing (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S401000, C370S466000, C370S474000
Reexamination Certificate
active
10758211
ABSTRACT:
Disclosed is a packet-switched communication apparatus (DNS proxy server) receiving and forwarding messages which are used to obtain an address corresponding to a domain name assigned to a device connected to a network from the domain name and to obtain such a domain name from the address. The communication apparatus comprises mapping retaining means for retaining mappings between network-dependent parts of addresses which are used in a first network and address translators; address translator selecting means for selecting an address translators, based on an address included in a received packet; address obtaining means for obtaining a substitutive address to replace the address included in the received packet from the selected address translator; and address replacement means for replacing the address included in the received packet by using the obtained substitutive address.
REFERENCES:
patent: 6118784 (2000-09-01), Tsuchiya et al.
patent: 6493765 (2002-12-01), Cunningham et al.
patent: 7085270 (2006-08-01), Inouchi et al.
patent: 2004/0001509 (2004-01-01), Zhang et al.
patent: 2003-87336 (2003-03-01), None
patent: 2003-174466 (2003-06-01), None
RFC 2765.
RFC 2766.
RFC 3089.
RFC 3142.
Inouchi Hidenori
Takahashi Katsunori
Takeda Yukiko
Takeuchi Keisuke
Chan Wing
Hitachi Communications Technologies, Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Roberts Brian
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