Working With AppArmor Profiles

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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 Info

Level

Beginner

Last updated

Aug 31, 2025

Duration

30m

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
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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