Internet is usually provided to you as a service, just like your electricity and telephone line are. In your house is a modem which provides access to the internet, although the functions are very different, think of it like your power meter. Next is the router, which creates a network which allows multiple computers to share the internet connection – again, think of this as your power distribution board. Sometimes the modem and router are combined into a single device, and it is the router which provides the wireless signal your computers and phones use to gain access to the internet. This article presumes your model and router are already set up.