Support for Red Hat Enterprise Linux 4 is introduced with the release of ColdFusion MX 7.01. This presents a new security challenge to System Administrators configuring ColdFusion MX for Apache since the SELinux functionality is ACTIVE by default starting with RHEL4. SELinux, or Security Enhanced Linux, is a software product developed by the National Security Agency and has become a standard in Red Hat Linux distributions including RHEL and Fedora Core Linux (FC remains unsupported by CFMX). The most notable problem arises when attempting to configure the webserver to run the ColdFusion connector stub. This problem and a recommended solution are described further below, but first I'll quote from two references regarding the nature of SELinux.