Nov 27, 2025 · Since Linux systems rely heavily on classic DAC permissions, you might wonder "How do we enforce MAC on Linux?" The answer is: SELinux.

Remember that SELinux policy rules are checked after DAC rules. SELinux policy rules are not used if DAC rules deny access first, which means that no SELinux denial is logged if the traditional DAC …

Apr 8, 2025 · SELinux is a powerful security framework that changes how Linux systems handle access control and prevent threats. In this piece, we explored everything about SELinux, from its …

SELinux was designed to enhance existing security solutions, not to replace them. For example, discretionary access control (DAC) is still applied, even if the system is using SELinux. If DAC denies …

Jun 27, 2025 · This tutorial provides a brief introduction to SELinux concepts and fundamentals.

Nov 14, 2025 · Traditional Linux systems use discretionary access control (DAC), where the owner of a file or resource decides who can access it. In contrast, SELinux implements mandatory access …

This blog demystifies SELinux, covering its core concepts, practical usage, troubleshooting workflows, and best practices to help you leverage it for robust system security.

Unlike traditional discretionary access control (DAC) systems where users have control over their own files and processes, SELinux implements mandatory access control (MAC), ensuring that the system …

Sep 23, 2024 · This book consists of two parts: SELinux and Managing Confined Services. The former describes the basics and principles upon which SELinux functions, the latter is more focused on …

Feb 4, 2025 · Unlike traditional discretionary access controls (DAC), which rely on user permissions, SELinux applies security policies that define what actions processes and users can perform on a …