In which SELinux mode are all policy violations logged but not enforced?

The correct answer, Permissive Mode, is characterized by the logging of all policy violations without actually enforcing the policies. In Permissive Mode, SELinux does not restrict operations that would otherwise be denied in Enforcing Mode, allowing administrators to observe what actions would have been restricted by SELinux policies. This is particularly useful for troubleshooting and policy development, as it provides insight into potential issues without affecting the functionality of applications or services.

By logging the violations, administrators can collect data on what would have been blocked if SELinux were in Enforcing Mode. This can guide them in adjusting policies to fit operational needs while also maintaining security.

In contrast, Disabled Mode completely turns off SELinux, meaning that no policies are applied or logged. Enforcing Mode actively restricts operations based on defined policies, blocking any actions that violate these policies. Targeted Mode is a specific SELinux policy that applies only to certain targeted processes, but it still operates with enforcement similar to Enforcing Mode. Therefore, Permissive Mode stands out as the only option that allows for monitoring policy violations without imposing restrictions.