IETF Security Working Groups

http://www.ietf.org/html.charters/wg-dir.html#Security_Area

Firewall. IETF Working Group: Authenticated Firewall Traversal (aft)

http://www.ietf.org/html.charters/aft-charter.html

Great Circle Associates (home of the original firewall experts)

http://www.greatcircle.com/

Steve Gibson's Shields UP!! Web site (scans your system for security holes)

http://grc.com/

CSI (Computer Security Institute). See the firewall resources page

http://www.gocsi.com/

Mark Grenman's "Firewall and Proxy Server HOWTO" page

http://www.grennan.com/Firewall-HOWTO.html

About.com firewalls, proxies, and caching page

http://compnetworking.about.com/compute/compnetworking/cs/proxyservers/index.htm

Bitpipe (search for "firewall")

http://www.bitpipe.com/

Google Web Directory firewall page

http://directory.google.com/Top/Computers/Security/Firewalls/

3Com firewall paper by Chuck Semeria. Search for "Internet Firewalls and Security" (use quotes)

http://www.3com.com/

"Securing Your Network Against Source IP Spoofing Attacks" by Chuck Semeria

http://www.indy.net/~sabronet/secure/795inet.html

Secure Computing (see security library)

http://www.sctc.com/

TruSecure Internet security assurance

http://www.trusecure.com/

Network ICE personal firewall

http://www.networkice.com/

Carnegie Mellon Software Technology Review page

http://www.sei.cmu.edu/str/descriptions/firewalls.html

ACM paper: "Network Security, Filters and Firewalls" by Darren Bolding

http://info.acm.org/crossroads/xrds2-1/security.html

Security related papers by Tim Bass, president of Silk Road

http://www.silkroad.com/papers/published.html

Firewall, Links at Washington University

http://www.cait.wustl.edu/infosys/infosys.html

Firewall, Security Links at ITPRC

http://www.itprc.com/security.htm