In this chapter we learned what packet analyzers are and what their use cases are. After a quick introduction to Wireshark, we covered what goes on behind-the-scenes when Wireshark captures packets; Wireshark benefits and important features; the necessary prerequisites before capturing packets; and other packet analyzer tools for packet editing/sniffing/replaying and so on. We also provided a brief overview of mobile packet capturing.

The next chapter will be more specific to Wireshark and its tips and tricks. After that we will explore TCP troubleshooting, then plunge into SSL, and other application protocols such as DHCPv6, DHCP, DNS, and HTTP. We will also analyze Wi-Fi capturing and carry out some security analyses with the help of Wireshark and tcpdump.