Support XFINITY Internet What Is Wi-Fi?


A wireless network uses a signal instead of wires to connect your devices – such as computers, printers and smartphones – to the Internet and each other. (A wireless network is commonly known as Wi-Fi, and both terms are used interchangeably.) The Wi-Fi signal can be picked up by any wireless-capable device such as a laptop or tablet within a certain distance in all directions. Set up Wi-Fi in your home and follow these simple guidelines on how to avoid interference and how to optimize your home networking experience.

Why Do I Need Wi-Fi?

Considering whether or not to set up Wi-Fi in your home? Here are just a few reasons to set up a wireless network in your home:

  • Freedom to access the Internet from anywhere within the signal range and move your devices around your home – anywhere within the Wi-Fi signal range – without losing your connection. Take any moveable device, like a laptop, into any room and still have Internet access, no extra work required.
  • Ability to access other devices connected to your network, for example, multiple computers can use one printer without a direct wired connection.
  • Access to the Internet on devices like smartphones and tablets to download books, music, movies and apps, or surf the web.
  • Freedom from the hassle of installing wired connections in different rooms.

How Do I Get Wi-Fi in My Home?

To establish Wi-Fi in your home, all you need is either a modem connected to a wireless router, or a gateway, which is a modem and wireless router in one unit. The modem provides access to the Internet, and the router broadcasts a Wi-Fi signal, allowing your devices to connect to each other and the Internet. Any wireless-capable device can then use this signal to connect to the Internet. Find out how to set up a router and wireless network.
Wireless Home Network - Diagram of devices and their relationships to one another when networked

Routers are available from many different manufacturers. The Wireless Gateway 1 (Model Numbers TG852G, TG862G, SMCD3GNV, TC8305C) and Wireless Gateway 2 (Model Number DPC3939) are Comcast-provided devices that connect your Internet, phone and home network. They make setting up a wireless home network as simple as possible. Learn more about wireless gateways.

Is Wi-Fi Secure?

Because Wi-Fi devices use a broadcast signal instead of wires to connect to the Internet and teach other, it is possible for unauthorized users to access your network. This could reduce the speed of your connection or make you vulnerable to things like identity theft. Yet there are multiple ways to ensure that your wireless home network is secure.

Both the Wireless Gateway 1 and Wireless Gateway 2 come pre-set with the best possible security options for a home network. However, if you have a router from another manufacturer, there are many different steps you can take to protect your network. See the security options available for your wireless gateway.

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