RSBAC
RSBAC (Rule Set Based Access Control) is an open source access control framework for current Linux kernels, which has been in stable production use since January 2000 (version 1.0.9a).
Features
Free open source (GPL) Linux kernel security extension.
Independent of governments and big companies.
Several well-known and new security models, e.g. MAC, ACL and RC.
On-access virus scanning with Dazuko interface.
Detailed control over individual user and program network accesses.
Fully access controlled kernel level user management.
Any combination of security models possible.
Easily extensible: write your own model for runtime registration.
Support for latest kernels.
Stable for production use.
Very easily portable to other operating systems.
The RSBAC system architecture has been derived and extended from the Generalized Framework for Access Control (GFAC) by Marshall Abrams and Leonard La Padula.
RSBAC means RuleSet Based Access Control, and is also an RBAC, Role Based Access Control solution, the two acronyms may sometimes cause confusion.