This Chapter covers the implementation of LinSec, as specified in Chapter 4, in the Linux kernel. Due to the space constraints on this report the implementation is presented on a rather high level with the exception of particularly interesting parts and problems encountered. Effort was made to explain implementation of the core LinSec mechanisms which is important for proving that the concepts specified in Chapter 4 are practically viable for employment in an mainstream operating system. For full details on the implementation a reference to the, well documented, source code is recommended.