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SELinux Cookbook

You're reading from   SELinux Cookbook Over 70 hands-on recipes to develop fully functional policies to confine your applications and users using SELinux

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Product type Paperback
Published in Sep 2014
Publisher
ISBN-13 9781783989669
Length 240 pages
Edition 1st Edition
Tools
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Author (1):
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Sven Vermeulen Sven Vermeulen
Author Profile Icon Sven Vermeulen
Sven Vermeulen
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Table of Contents (12) Chapters Close

Preface 1. The SELinux Development Environment FREE CHAPTER 2. Dealing with File Labels 3. Confining Web Applications 4. Creating a Desktop Application Policy 5. Creating a Server Policy 6. Setting Up Separate Roles 7. Choosing the Confinement Level 8. Debugging SELinux 9. Aligning SELinux with DAC 10. Handling SELinux-aware Applications Index

Managing SELinux users


In order to grant a Linux login the right set of roles, we first need to create an SELinux user that has just those roles assigned. Existing SELinux users can be modified easily, and if an SELinux user was added previously, it can be removed from the system as well.

How to do it…

Managing SELinux users is done as follows:

  1. Use semanage user to list the currently available SELinux users:

    ~# semanage user -l
                    Labeling   MLS/       MLS/
    SELinux User    Prefix     MCS Level  MCS Range                      SELinux Roles
    
    git_shell_u     user       s0         s0                             git_shell_r
    guest_u         user       s0         s0                             guest_r
    root            user       s0         s0-s0:c0.c1023                 staff_r sysadm_r system_r unconfined_r
    staff_u         user       s0         s0-s0:c0.c1023                 staff_r sysadm_r system_r unconfined_r
    sysadm_u        user       s0         s0-s0:c0.c1023                 sysadm_r...
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