 The project has also ported the NSA 's FLASK / TE implementation from SELinux to FreeBSD . Other work includes the development of OpenBSM , an open source implementation of Sun 's Basic Security Module ( BSM ) API and audit log file format , which supports an extensive security audit system . This was shipped as part of FreeBSD 6 @.@ 2 . Other infrastructure work in FreeBSD performed as part of the TrustedBSD Project has included GEOM and OpenPAM . 
