Dual mode firewall

Details Dual mode firewall Dual mode firewall

2003-11-24

2009-02-24

Truong, Thanhnga B (Department: 2135)

Information security

Access control or authentication

Network

C370S392000, C370S428000, C370S401000, C711S216000

Reexamination Certificate

active

07496955

ABSTRACT:
Methods and devices are provided for implementing a dual mode firewall. Some implementions provide a firewall in a network device that acts as bridge for layer2traffic and acts as a router for layer3traffic. In some implementions, a determination of whether to act as a bridge or a router for a packet is based on the configuration of the interface handling the packet. In some implementations, the network device inspects a destination of each packet to determine whether to act as a bridge or a router for that packet. The firewall screens both the layer2and the layer3traffic according to policies implement in the firewall.

REFERENCES:
patent: 6240533 (2001-05-01), Slemmer
patent: 6505254 (2003-01-01), Johnson et al.
patent: 6854063 (2005-02-01), Qu et al.
patent: 7093283 (2006-08-01), Chen et al.
patent: 7143188 (2006-11-01), Maufer et al.
patent: 2003/0149766 (2003-08-01), Syvanne et al.
Examiner's Communication pursuant to Article 96(2) EPC Sep. 18, 2006, from corresponding European Patent Application No. 04 811 173.6, Dual Mode Firewall, 9 pp.
Bart de Schuymer, Nick Fedchik,Ebtables/Iptables Interaction On A Linux-Based Bridge, Nov. 9, 2003, http://ebtables.sourceforge.net/br—fw—ia/br—fw—ia.pdf, printed Mar. 31, 2005, 11 pages.
Cedric Blancher,Layer 2 Filtering and Transparent Firewalling, Libre Software Meeing, Jul. 9, 2003, http://sid.rstack.org/pres/0307—lsm03—l2—filter.pdf, printed Mar. 30, 2005, pp. 12-25.
Ralf Spenneberg,Bridgewalling—Using Netfilter in Bridge Mode, LINUX-KONGRESS, Sep. 4, 2002, Cologne, Germany, http://www.spenneberg.com/talks/linux-kongress2002/ralf-spenneberg.bridgewall.pdf, printed Mar. 30, 2005, 6 pages.
Netgear,MR814 4-PORT Wireless Router with 10/100 Mbps Switch, Netgear Product Specification, Nov. 13, 2003, http://www.netgear.com/pdf—docs/MR814v2—13Nov2003.pdf, printed Mar. 31, 2005, 1 page.
Brian Hill,Cisco: The Complete Reference—Chapter 20, Layer 3 Switching, McGrawhill, Feb. 2002, http://web10.eppg.com/betabooks
ov01/hill/ch20.html, printed Mar. 31, 2005, 20 pages.
Rolf McClellan,Cisco Catalyst 6500 with Multilayer Switching Feature Card(MSFC), McClellan Consulting, Aug. 1999, http://www.mcclellanconsulting.com/whitepapers/6500performance.pdf, printed Mar. 30, 2005, 7 pages.
Database WPI, Section EI, Week 200372 Derwent Publications Ltd., London, GB, AN 2003-757724 & CN 1437114 (Lenovo Beijing Co Ltd), Aug. 20, 2003, Abstract, 1 page.
Office Action in Corresponding EP Application No. 04-811 173.6—2413, Dated May 11, 2007, 4 pages.
International Search Report mailed Apr. 20, 2005 from International Application No. PCT/US2004/038357, including Notification of Transmittal, and Written Opinion of the International Searching Authority dated Apr. 20, 2005 from International Application No. PCT/US2004/038357, 14 pages. (CISCP353.WO).

Affiliated with

Also associated with

Rating

Dual mode firewall does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual mode firewall, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual mode firewall will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4100666