Wi-Fi Discovery
Wi-Fi discovery is a process used to learn about WLAN's presence in the environment. WiFi discovery process is not against any law, since you are not acting offensively at any point, you are simply, passively listening to the Wi-Fi frequency bands, using your wireless client.
In order to discover what type of WLAN networks are present, you need to use specific tools that uses wireless hardware and listens on either a 2.4GHz or a 5GHz band. Some of them are built-in to the operating system (they are most often very ineffective for detailed WLAN analysis), and other ones are simple tools, which you can find on the internet. There are hundreds or thousands of tools out there in the market.
I will present to you 2 of them, that I really enjoyed due to its simplicity. What you will discover, while going through these chapters (or you already know it from your experience), the tools delivered for Windows OS have better graphics and some fancy graphical features, opposite to what Linux-based tools provide. But I can promise you, the ones based on Linux provide exactly the same information (just in more text-like format). On the other hand, it is a bit easier to write scripts, that takes outputs of one tools as the input to other ones.
