How to prevent administrative access to Plesk from specific IP addresses

Step 1: Navigate to Tools & Settings > Restrict Administrative Access (under “Security”).

Step 2: Click on Settings, choose the “Allowed, excluding the networks in the list” radio button, and click OK.

Step 3: Click on Add Network and specify the IP address or addresses from which administrative access to Plesk must be blocked. You can input individual IP addresses (e.g., 192.168.1.110) or define subnets of IP addresses (e.g., 123.0.0.1/16 or 123.123..).

Step 4: Click OK.