When using custom administration roles, an update to Airlock WAF 7.3 will fail.
Even though the update script notes a successful update, connections to the Configuration Center won't be possible.
The following command should be run before updating to Airlock WAF 7.3, but can also be run after the update has finished.
perl -pi -e 's/<acl Version="0">/<acl Version="1">/i' /opt/airlock/custom-settings/mgt-tomcat/acl.xml
After running the command above, a reboot of Airlock WAF is necessary.