Security-enhanced Linux (SELinux) is a powerful, kernel-level security layer that provides fine-grained control over which users and processes may access what resources and execute which programs on a system. RHS429 introduces advanced system administrators, security administrators, and application programmers to SELinux policy writing. You will learn how SELinux works, how to manage SELinux, and how to write an SELinux policy. This class culminates in a major project to scope out and then write policies for services previously unprotected by SELinux.