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Definitions and Overview

• Firewalls REVISED Superhighway Safety
• Internet Firewalls FAQ Interhack.net, Paul D. Robertson, Marcus J. Ranum, and Matt Curtin
• Why You Need a Firewall Cisco
  
• Evolution of the Firewall Industry Cisco

Features and Services

• Comparing Firewall Features WindowSecurity.com, Deb Shinder
• Design the Firewall System CERT Coordination Center
• What is Port Forwarding? PortForward.com
• Great walls of fire Cyber India Online Limited, Wilson Victor Gomes

Limitations

• Hidden Hacks Information Security Magazine, Al Berg
• Issues and Problems with Firewalls National Institute of Standards and Technology, John Wack
• Firewall Limitations San Diego PC Help

  Reported failures

  • The Breach That's Shocking the Firewall Industry BusinessWeek Online
  • Hacking the Web: A Security Guide Web Developer Magazine, Anne Bilodeau

What are the ethical principles that apply to firewalls?

• Professional Responsibility and Confidentiality Considerations When Using The Internet Internet Legal Services, Mary Frances Lapidus
• Ethics of using neighbors open WiFI [sic] Digg.com