Securing RTI Data Distribution Service with Security Enhanced Linux (SELinux) provides a new level of security for applications and solutions created with the DDS standard. This white paper, written by Tresys Technology, a recognized leader in SELinux and Linux security services, provides technical details concerning leveraging SELinux to secure DDS applications. It explores how SELinux and Linux can be used to create solutions with RTI Data Distribution Service that meet the most stringent government security requirements.