Packet transfer device, semiconductor device and packet...

Details Packet transfer device, semiconductor device and packet... Packet transfer device, semiconductor device and packet...

2001-09-26

2008-12-30

Qureshi, A. (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395420, C370S466000, C713S154000, C709S243000

Reexamination Certificate

active

07471690

ABSTRACT:
There are provided a packet transfer device, a semiconductor device, and a packet transfer system, which can provide a DMZ constructed in a simple configuration. A LAN is connected to a first port. A public server is connected to a second port. A WAN is connected to a third port. A filtering section performs filtering processing according to attributes of each packet inputted via any one of the first to third ports. A routing section carries out routing processing on the packet which was not discarded by the filtering section.

REFERENCES:
patent: 6529897 (2003-03-01), Corl et al.
patent: 6647427 (2003-11-01), Watanabe
patent: 6772347 (2004-08-01), Xie et al.
“5 Steps for Understanding Basics of Firewall,” Network, 2001, pp. 74-85.
“VPN Using the Internet Like a Leased Line,” Nikkei Byte, 2000, pp. 116-127.
Japanese Office Action for Application No. JP 2001-147324 dated May 23, 2006.

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