- An Architectural Overview of UNIX Network Security - A document from the Center for Information Technology, National Institutes of Health.
- BlogFish - Weblog by Jonathan Weiss about Unix, BSD, security, Programming in Ruby, Ruby on Rails and Agile Development.
- Computer Security - How to secure your Unix computer system (emphasis on HP-UX).
- OpenBSD release errata - the OpenBSD CD errata page
- Secure your Digital UNIX (Tru64) Alpha - Notes for securing a DEC/Compaq Alpha running Tru64 UNIX.
- SysAdmin & Security Resource Center - Security, networking and UNIX resources for system administrators.
- The Website of Johnny - About Linux/Unix, security, encryption.
- Unix and Security Services and Solutions - Providing administration, installation, integration and consulting services for Unix and Security products and solutions.
- Unix System Security Tools -- Introduction - An introduction to Unix security tools, including Ten General Security Rules.
- Vapid Labs - Security, Linux, FreeBSD, IRIX, midikeys, exploit, Vulnerability, Networking
- Admin Tools-Software (21)
- Conferences (1)
- Documentation (7)
- Exploit Software (5)
- FAQs, Help, and Tutorials (17)
- Mailing Lists (1)
- News and Media (3)
- Projects (3)
- Protection (10)