Important URLs

http://lists.gnac.net/firewalls
Original 'greatcircle' firewalls mailing list
http://www.sans.org
Very good security oriented organisation
http://www.sans.org/newlook/resources/hard_solaris.htm
hardening solaris
http://www.securityfocus.com
bugtraq and other general security stuff
http://www.securityfocus.com/bugtraq/archive
bugtraq archive
http://www.cert.org
Computer emergency response team, security advisories
http://www.first.org
Forum of Incident Response and Security Teams

Vendor/OS Specific

http://sunsolve.sun.com
Follow the links for security
http://www.netbsd.org/Security
NetBSD project security info
http://www.freebsd.org/security
FreeBSD security info
http://www.openbsd.org/security.html
OpenBSD security info
http://www.linuxsecurity.com
Linux security info
http://ntbugtraq.ntadvice.com
NT security mailing list
http://ntsecurity.ntadvice.com
Another NT security mailing list
http://www.thegild.com/firewall
commercial firewalls info page
http://www.checkpoint.com
Firewall-1 vendor

Misc other stuff

http://ciac.llnl.gov/ciac/ToolsUnixFirewalls.html
some Unix firewall proxies
http://www.obfuscation.org/ipf/ipf-howto.txt
IP filter based firewalls howto

Good Books to read :

Building Internet Firewalls (2nd Ed.) Chapman & Zwicky, O'Reilly Pub.
Firewalls and Internet Security - Repelling the wily hacker Cheswick and Bellovin
TCP/IP Illustrated vol I Stephens, Addison-Wesley

Last Modified: November 9, 2000