In the left pane, expand the Forwarding or NAT Forwarding section and click Port Triggering or Port Forwarding.
In the Add Port Forwarding Entry window, fill in the Service Name or Application fields with the name of your application or game, and Device IP Address if available with the static IP address you set for your computer, whether it's connected via Ethernet or Wi-Fi.
To select an app from the list of existing options, simply click the "View existing apps" button.
Select the port type UDP or TCP for "Launch ProtocolInternal" and "External Protocol" depending on the specific requirements of the game or application. Some games and applications may only use UDP, some may only use TCP, and some may use both. But be sure to select the same protocol type for both ports.
Then enter the same port number for "Launch spain telegram data Protocol" and "External Protocol", regardless of whether you are using UDP or TCP. For example, we use port "5062" with TCP protocol for Fortnite game.
If your application or game does not require one protocol type TCP or UDP, you can simplify port forwarding by selecting “All” in the “Protocols” field. This opens ports for both protocols to ensure smooth operation.
Finally, click Save to save the port forwarding rule.
Your port forwarding rule is now saved. You can easily enable or disable the rule using the buttons under the Status column.
Once this is done, reboot your router. Once it is back online, launch the game again and check the NAT type. It should now be set to Open NAT.