Before we start trying to hack into networks, there are a few basics that we need to learn. What is a network? A network is a number of devices connected together so that they can share data. This data can be files, resources (such as on a home network), or just a way to connect to the internet.
All networks, Wi-Fi or wired, achieve this sharing of data by using the same principle—a device that acts as a server, which all of the devices communicate with. The server has access to the resources, and all of the other devices on the network can access the data from the server. On most Wi-Fi networks, the server is the router, and all devices connect to the router and access the internet through it. The only device on the network that is directly connected to the internet is the Wi-Fi router.
In the following diagram, clients 1, 2, and 3 have no access to the...
