Here's how to set up port forwarding:

Open your browser and type in 192.168.1.1 to go to the router admin page

Login with your router username and password; these are on the sticker underneath the removable settings card on back of your Wi-Fi Hub Black

Select the See internet settings button on the Dashboard page

Now choose the Manage advanced settings button

Select Continue on the advanced settings warning

Select the Advanced Configuration option in the menu

Select Forward Rules and then IPv4 Port Mapping

More information