\item[SELinux] A Linux kernel security module that provides allows administrators to have more control over who can access the system. It attempts to separate the security policy from enforcement of security decisions. It was originally developed by the National Security Agency (NSA) and was released to the open source community in 2000. It was integrated into the upstream Linux kernel in 2003. Information about security is generally contained in \texttt{/etc/sysconfig/selinux}.