Setting up wireless cards

When you purchase a Wi-Fi adapter for your Raspberry Pi, you want to make sure it not only works with the Raspberry Pi, but also works with Kali Linux. Luckily, almost every Wi-Fi adapter we used works with both the Raspberry Pi and Kali Linux. In this book, we are using the CanaKit Wi-Fi dongle, as shown in the following image:

CanaKit makes an extremely popular Raspberry Pi kit that ships with this version of the Wi-Fi adapter. You can also purchase an adapter separately. If you need to purchase a separate card, make sure it is one that works with Debian Linux.

Tip

A good resource for compatible cards is http://elinux.org/RPi_USB_Wi-Fi_Adapters.

Once you connect your Wi-Fi adapter, you should first verify that the system shows it is functioning properly. You can do this by issuing the iwconfig command in a terminal window as shown in the following screenshot:

You should see a wlan0 interface representing your new wireless interface. The next step is to enable the interface...