This is a list of valuable online resources of SELinux information. SELInux is currently undergoing extremely rapid development so the information in this document is very subject to change. The links contained in this section represent the best sources of current SELinux development status.
NSA SELinux - The NSA (National Security Agency) SELinux page. Contains a good overview of the theory of information security behind SELinux.
NSA SELinux Mailing List - The NSA mailing list for SELinux development. The bleeding edge development of SELinux happens on this list, as well as discussion of the future direction of SELinux.
Unofficial SELinux FAQ - This unofficial FAQ covers generalized SELinux information that is not specific to any one distribution. Contains more practical and less theoretical information than the official NSA SELinux FAQ.
Fedora Core 3 SELinux FAQ - A good guide to the SELinux implementation in Fedora Core 3. Some of this has changed in the test releases of Fedora Core 4, but overall this is still a very useful source of information on that specific implementation. Heavy on practical details and adminstration commands.
Fedora SELinux Mailing List - The Fedora SELinux mailing list discusses SELinux development in the context of the Fedora Core development build. A good resource for questions about practical SELinux matters.
Understanding and Customizing the Apache HTTP SELinux Policy - A guide to the specific Apache policy shipping with Fedora Core 3. This is a good guide to SELinux policy, using real world httpd policy as an example.
Red Hat SELinux Guide - A guide to SELinux as shipped with Red Hat Enterprise Linux 4. Another good overview, though it only covers the targeted policy since the strict policy is not currently supported in RHEL4.
Tresys Technology SELinux - The Tresys Technology SELinux pages. Tresys is a company providing SELinux development, support, and training. They are heavy contributors to SELinux development and their website has some very up to date training resources.
SELinux: NSA's Open Source Security Enhanced Linux - O'Reilly publishes this SELinux book. Very good, but as with any printed material on something being developed as quickly as SELinux, a bit out of date.
GNU m4 Macro Processor - Reading and writing policy relies on extensive use and understanding of m4 macros, documentation of which is provided at the following link.