Plesk Obsidian 18.0.56
10 October 2023
To enhance security, Apache now listens to only the loopback IP address (also called localhost) when Apache runs with nginx as a reverse proxy.
This feature is turned on by default on new Plesk installations. To enable it on existing installations, run the following CLI command: plesk bin apache --listen-on-localhost true. For information on the feature,
see the KB article.