SELinux System Administration, Third Edition - Third Edition

Chapter 12: Tuning SELinux Policies

Until now, we have been working with an existing SELinux policy by tuning our system to deal with the proper SELinux contexts and assigning the right labels to files, directories, and even network ports. We've learned that the behavior that SELinux enforces is defined within the policies. To fine-tune the policy enforcement rules, we have already briefly covered SELinux booleans.

It's time we look into SELinux booleans in more detail, learning how to look up the impact booleans have. Within this chapter, we then consider SELinux policy modules themselves and what options administrators have when dealing with these modules. Finally, we will look at how to update or even replace existing policies.

In this chapter, ...