To set up your router for fiber internet quickly, connect the router to your fiber modem, access the router's settings via a web browser, and input the provided ISP credentials. Make sure to update the firmware, configure Wi-Fi security, and customize your network name for. However, setting up a fiber optic connection to your router can seem daunting if you're unfamiliar with the process. It secures the network with a built-in firewall, and provides access to the internet and sometimes even the wireless network. However, if you're not accustomed to some of the jargon, like MAC cloning and PPPoE, you may encounter a few.