See also:

• Computers: Internet: Proxying and Filtering  (222)
• Computers: Security: Consultants  (511)
• Computers: Security: Internet  (408)
• Computers: Security: Intrusion Detection Systems  (126)
• Computers: Security: Mailing Lists  (22)
• Computers: Security: Products and Tools  (622)
• Computers: Security: Virtual Private Networks  (85)
• Computers: Software: Networking: Security  (19)

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• COAST Internet Firewalls Hotlist   + A list of firewall vendors, white papers, resources, and FAQs.

• DShield - Distributed Intrusion Detection System collects firewall log excerpts from volunteers. The logs are aggregated and analyzed. Several reports are generated showing trends in attack sources and methods used.
• FirewallSupport.com - Online support service specifically focused on firewall security. Information and resources to troubleshoot firewall problems.
• The Freefire Project - Dedicated to users, administrators and developers of IT security solutions (especially firewalls) based on free software. It features a large tool overview, some articles on IT security and links to other resources.