SELinux, or Security-Enhanced Linux, is a security module that can be used to enforce access control on Linux systems. It is designed to prevent unauthorized users from accessing or modifying files and other resources on the system. SELinux can be configured to operate in a variety of modes, including enforcing mode, permissive mode, and disabled mode. In enforcing mode, SELinux will block any access to files and resources that is not explicitly allowed by the system’s security policy. In permissive mode, SELinux will log any access to files and resources that is not explicitly allowed, but it will not block the access. In disabled mode, SELinux will not enforce any security policy.
To check the status of SELinux on your system, you can use the following command: