Port Restrictions

Limit access to particular network ports for selected users or addresses.

Where to find it: Sign in as root, open Server > Firewall, then choose Port Restrictions.

Available to: Root only.

Before you start

Security settings can also block legitimate visitors. Start with a narrow rule or monitoring mode where available, then check that normal access still works.

Why use it — and when not to

Use Port Restrictions to reduce a specific, evidenced risk. Avoid broad blocks, global disables, or permanent exceptions when a monitor mode or narrower rule can solve the same problem.

How to use it

1. Choose the port, connection direction and users or addresses affected.
2. Review existing restrictions before adding or changing one.
3. Save and test the permitted and restricted connections.

Allow-only access to a port

Choose TCP or UDP, the port, allowed sources, a comment, and the response for other sources: reject or drop. Saving the restriction and Save & Apply are separate choices.

Use this for a specific service that should be reachable only from known networks. Confirm your management source before restricting an SSH or panel port, and test the allowed and denied paths separately.