December 2016
Intermediate to advanced
300 pages
6h 36m
English
Content preview from SELinux System Administration - Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Summary
SELinux maps Linux users onto SELinux users and defines the roles that a user is allowed to be in through the SELinux user definitions. We learned how to manage those mappings and SELinux users with the semanage application and were able to grant the right roles to the right people.
We also saw how the same commands are used to grant the proper sensitivity to the user and how we can describe these levels in the setrans.conf file. We used the chcat tool to do most of the category-related management activities.
After assigning roles to the users, we saw how to jump from one role to another using newrole, sudo, runcon, and run_init. We ended this chapter with important insight into how SELinux integrates in the Linux authentication process ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.