 The project has also ported the NSA 's <unk> / TE implementation from <unk> to FreeBSD . Other work includes the development of <unk> , an open source implementation of Sun 's Basic Security Module ( <unk> ) 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 <unk> . 
