Hi,
Running Plesk Obsidian Version 18.0.61 on Centos 7.9.2009 (for the last week before moving to Alma) in a LXC in Proxmox.
Proxmox firewall enabled for the LXC, while iptable rules within the LXC works. From inside the Plesk LXC, if I add an iptable rule to block an IP , it actually does...