- Plesk Onyx for Windows
How to block access to a network port or protocols for all IP addresses except one specific IP address using Plesk Firewall?
Such feature is not implemented in Plesk yet.
Consider voting for the corresponding feature request on Plesk UserVoice.
The top-ranked suggestions are likely to be implemented in future product updates.
As a workaround, use the Windows Firewall to enable such restriction.