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. Once you understand the basic concepts, you can check out my Recommended Equipment section toward the bottom of the. In this guide, you'll learn all about this point — the ONT, or optical network terminal — and the other steps and equipment required for setup. Before diving in, here's a quick overview of what to expect on installation day: That's it — five easy steps to installing fiber-optic internet at your.