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. Before. In this article we'll break down how fiber internet is installed - from the network fiber drop outside your house to the in-home setup with your router and gateway - and what you should expect at each stage. Both options include the necessary equipment, such as a Fiber Jack and an advanced Wi-Fi router, at no additional cost.