Plesk and websites are unavailable

Symptoms

• Plesk and websites are unavailable
• SSH to the server is possible
• All ports are filtered, except the port 22 (SSH)
• The package iptables-services has been installed just recently

Cause

The extension (D)DoS Deflate Interface was updated from version 4.1.0 to 4.1.2. During this update, the package iptables-services was installed and all the firewall rules were reset.

Resolution

The issue will be fixed in the next extension release.

Currently, the following workaround might be applied:

1. Connect to the server via SSH

2. Install the Plesk Firewall:

   # plesk installer --select-release-current --install-component psa-firewall

3. Enable the firewall:

   # /usr/local/psa/bin/modules/firewall/settings -e

All the necessary rules will be applied automatically.