ISP-Provided Gateway (Rental)

Usually, if the gateway supports bridge mode, you can disable its routing and connect your own router by Ethernet. Xfinity's instructions say bridge mode leaves modem functions on but turns off gateway routing and private Wi-Fi, so provider behavior must be checked. [Xfinity bridge mode](https://www.xfinity.com/support/articles/wireless-gateway-enable-disable-bridge-mode)

Many cable gateways combine both jobs in one box, which is why the rental feels plug-and-play. Xfinity describes its gateway as combining an internet or voice modem with a Wi-Fi router, while other ISPs may separate equipment or charge for Wi-Fi. [Xfinity gateway information](https://www.xfinity.com/support/articles/why-rent-wireless-gateway)

The main trade-off is an ongoing provider fee and less control over firmware, settings, and replacement hardware. It can still be sensible for a renter or a household that wants support, especially when the ISP supplies a DOCSIS 3.1 gateway for the subscribed cable tier.

Bridge mode can disable the gateway's private Wi-Fi, extender management, and some provider security features while your own router takes over. Xfinity specifically warns that its CyberSecure feature and Wi-Fi Extenders are unavailable in bridge mode, so check the ISP's list before switching. [Xfinity bridge mode](https://www.xfinity.com/support/articles/wireless-gateway-enable-disable-bridge-mode)