Links to information related to network security, including not only "white hat" but also "black hat" resources. This list will eventually comprise all sorts of information, from security vulnerabilities to cracking tools and generic tutorials.



How could any list of links to security related information not include the authoritative center of information on security holes? Thanks go to the guys at Carnegie Mellon.
Security news, security tools, UNIX focus, Windows focus, information about security holes and exploits... it's a nice all-roundup website.
This other site centers only around the Linux OS, but it also includes lots and lots of tutorials, HOWTOs and other interesting documentation.
The CIS provides methods and tools to improve, measure, monitor and compare the security status of Internet connected systems. They offer tools one can download to score the security of a system against their own benchmarks.
The Common Vulnerabilities and Exposure (CVE) website, an effort to make it easier to share data between all different vulnerability databases and security tools. It is not a database in and by itself.
The Open Source Vulnerability Database attempts to gather information from all vulnerability databases that are freely available, as well as provide its own infrastructure to keep track of security issues.
Online community to develop a Linux firewall distribution with a nice web based configuration tool and lots of features. Check out their mission statement for more information.
We all know how binaries with the setuid/setgid bit set are potentially dangerous. This website compares a list of such binaries in some Linux distribution as well as Solaris, and also allows you to search for a given binary to see its default permissions.