SELinux, or Security-Enhanced Linux, is a security feature in Linux that provides an additional layer of protection for the operating system. It was developed by the National Security Agency (NSA) to implement mandatory access controls in Linux.
SELinux uses a mandatory access control (MAC) model to limit the permissions of system processes and users. With SELinux, you can define policies that determine which users and processes have access to specific files and resources, and what actions they are allowed to perform.
Why is SELinux so important? The answer is simple: security. By enforcing MAC policies, SELinux helps prevent unauthorized access to sensitive data and system resources. It also helps prevent attacks that exploit vulnerabilities in the system, such as buffer overflow attacks and privilege escalation attacks.
This post provides a detailed guide on how to check the status of SELinux on your Linux system. It covers three different methods: using the "sestatus" command, using the "getenforce" command, and checking the SELinux configuration file.
It also provides step-by-step instructions on how to do so. It is a valuable resource for anyone who wants to ensure that their Linux system is secure and protected.
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