2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/130257FreeBSD was one of the first widely deployed free operating systems to provide mandatory access control. It supports a number of classic MAC models. This tutorial paper addresses exploiting this implementation to enforce typical enterprise security policies of varying complexities.6 pages, 3 figures, submitted to XI International Symposium "Problems of redundancy in information and control systems"Cryptography and SecurityA.1; D.4.6text