Paranoid Penguin - Introduction to SELinux

Invest some time into SELinux and worry less about zero-day attacks.

Besides Type Enforcement, SELinux includes a second model, called Role-Based Access Control (RBAC). Although I'm out of space for now, RBAC builds on the concepts we've already discussed, providing controls especially useful when real human users, as opposed to dæmons and other automated processes, are concerned.

Next time, I'll describe RBAC at length and begin going into greater depth on how actually to use SELinux, beginning with Fedora and Red Hat's “targeted” policy. Until then, be safe!

Resources for this article: /article/9510.

Mick Bauer ( is Network Security Architect for one of the US's largest banks. He is the author of the O'Reilly book Linux Server Security, 2nd edition (formerly called Building Secure Servers With Linux), an occasional presenter at information security conferences and composer of the “Network Engineering Polka”.