- K. Cary - Firewall analysis and operation methods, 2006 -

- Insightix - Bypassing  Network Access Control Systems, 2006 -

- P. Kostenbader - Standards in desktop firewall policies, 2006 -

- S. Piccardi - Firewall e VPN con GNU/Linux, 2004  -

- M. Ranum - Thinking about Firewalls -

- R. Reinhardt - An architectural overview of Unix Network Security, 1992 -

- H. Schauer - An Internet gatekeeper -

- A. Singh - Demystifying Denial-of-Services attacks, part one, 2005 -