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Labs

Working With AppArmor Profiles

In this lab, we will be working with AppArmor profiles. We will edit an existing AppArmor profile as well as create a new profile.

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Lab platform
Lab Info
Level
Beginner
Last updated
Aug 31, 2025
Duration
30m

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Table of Contents
  1. Challenge

    Change the dhclient AppArmor profile to complain mode.

    Note: Please wait about 6 minutes to allow the server to finish provisioning before connecting via ssh.

    1. In order to make changes to AppArmor profiles, first we must install the apparmor-utils package with the following command:

      sudo apt-get install -y apparmor-utils
      
    2. In order to change the dhclient AppArmor profile to complain mode, run the following command:

      sudo aa-complain /sbin/dhclient
      
    3. Lastly, we must restart the AppArmor service for the changes to take effect:

      sudo systemctl reload apparmor.service
      
  2. Challenge

    Create a new AppArmor profile for Xtightvnc and set its profile to complain mode.
    1. To create a new AppArmor profile for Xtightvnc, run the following command:

      sudo aa-genprof Xtightvnc
      

      Then, press F to finish creating the profile.

    2. Next, set the new Xtightvnc AppArmor profile to complain mode:

      sudo aa-complain /usr/bin/Xtightvnc
      
    3. Lastly, we need to restart the AppArmor service for the changes to take effect:

      sudo systemctl reload apparmor.service
      
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