In System > Network Configuration > Advanced, add the page of Open Ports on the WAN Interface. By adding, deleting, enabling, and disabling, the access to equipment through the WAN interface can be effectively controlled to facilitate customer service to enable or disable the WAN interface quickly.

By default, four commonly used ports are provided and closed. When required to open the ports, click the Disable button to switch to the Enable button in green. Finally, click OK[A253] to save the changes.

To customize requirements, click the Add button, and enter the port number and description.

After clicking OK[A254], the port is open.