What Is SELinux?
SELinux is a special security system built into Linux computers. SELinux was created by the U.S National Security Agency and Red Hat company. The main purpose of the SELinux is to control what different programs and users are allowed to access on the computer. It does this by setting the strict rules. Without SELinux, if a program gets a virus or hacker access, that program could access all files and data on the computer. This is bad. With SELinux, each program and user is limited in what they can see and do. For example, a web browser can connect to websites but cannot read your private documents. This prevents viruses and hackers from causing full damage if they get into one program.
SELinux is always running in the background on Linux systems. Users and programs cannot disable or turn it off easily. This adds an important layer of security. System administrators enable SELinux and set up the access rules for what each program and user is permitted to do on that Linux computer.
What is SELinux?
SELinux is a special security system built into Linux computers. It helps keep your computer safe and secure. With SELinux, different programs and users on the computer have limited permissions. This means each program or user can only access certain files and do certain actions that they are allowed to do. For example, The web browser can connect to the internet but it cannot read your private documents. This prevents viruses and hackers from gaining full control over your system if they get into one program.
SELinux sets rules about what different programs and users are permitted to do. System administrators enable SELinux and set up these security rules based on their needs.
Table of Content
- What Is SELinux?
- How Security-Enhanced Linux Works?
- SELinux Policies
- SELinux Labels and Type Enforcement
- SELinux Modes
- How to Configure SELinux?
- Configure SELinux Permanently
- Configure SELinux Temporarily
- Linux vs. SELinux: What are the Differences?
- AppArmor vs. SELinux
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