This is usually done by entering the router's IP address into a web browser. Step 2: Once you are in the router settings, look for the “Ports Settings” or “Ports” section in the menu. Live streaming, gaming, file-sharing, everything you do is a lot better with a faster connection. Compatible router: Verify that your router supports fiber optic input (look for an SFP or WAN port labeled. How do you open ports on a router? You open ports on a router by setting up port forwarding rules that allow external traffic to reach a specific device and port inside your network. When external traffic comes. To open ports to give access to a game or an application like BitTorrent, make sure it is necessary. Our guides are listed by model number.