Chapter 2. WLAN and Its Inherent Insecurities

Nothing great can be built on a weak foundation, and in our context, nothing secure can be built on something that is inherently insecure.

WLANs, by design, have certain insecurities that are relatively easy to exploit, for example, by packet spoofing, packet injection, and sniffing (this could even happen from far away). We will explore these flaws in this chapter.

In this chapter, we shall look at the following:

• Revisiting WLAN frames
• Different frame types and subtypes
• Using Wireshark to sniff management, control, and data frames
• Sniffing data packets for a given wireless network
• Injecting packets into a given wireless network

Let's get started!