- Lab
-
Libraries: If you want this lab, consider one of these libraries.
- Cloud
- Security

Creating Confined Users in SELinux
In this lab, we'll create an SELinux confined user by mapping an SELinux user to a Linux user. Confined users help us to impart restrictions on users to help protect our systems. *This course is not approved or sponsored by Red Hat.*

Lab Info
Table of Contents
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Challenge
Map Linux users jhalpert and pbeesley to SELinux users
- Map Linux user
jhalpert
to SELinux useruser_u
:
semanage login -a -s user_u jhalpert
- Map Linux user
pbeesly
to SELinux userstaff_u
:
semanage login -a -s staff_u pbeesley
- Check the user mappings:
semanage login -l
- We can see our Linux users successfully mapped to the assigned SELinux users.
- Map Linux user
-
Challenge
Ensure the SELinux user `xguest` can not mount media
- Check SELinux booleans for "xguest":
getsebool -a | grep xguest
- We see "xguest_mount_media" is an option and it is enabled, so lets disable it.
- Disable SELinux boolean "xguest_mount_media":
setsebool -P xguest_mount_media off
- Check to make sure our changes were successful:
getsebool -a | grep xguest
- We can see our change was successful.
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Challenge
Put SELinux into enforcing mode and ensure that setting is persistent
- Check SELinux state:
getenforce
- It is in permissive mode, so we need to change it to enforcing mode.
- Put SELinux into enforcing mode:
setenforce 1
- Check to make sure SELinux is now in enforcing mode:
getenforce
- We can see our change worked and SELinux is now in enforcing mode.
- Ensure SELinux boots into enforcing mode:
vi /etc/selinux/config
SELINUX=enforcing
About the author
Real skill practice before real-world application
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
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