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What does SELinux mean in Linux?

Answer»

SELinux is known as Security-enhanced Linux. In today’s world data is everything, Protecting your server and KEEP is up to server is a major challenge. Linux kernel gives security OPTION of SELinux which is designed to protect the server from misconfigurations and unauthorized data access/modification. It helps in DEFINING policy for accessing PROGRAMS and files.

SELinux comes with 3 modes Enforcing, PERMISSIVE and Disabled.

  1. Enforcing mode: Default mode to enforce the policies on the system, restrict access and log actions.
  2. Permissive mode: Here, SELinux was enabled but does not enforce security policies. This result warning and logging for any restricted access.
  3. Disabled mode: When SELinux is turned off and the security policies do not protect the server.


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