You will now perform pentesting; I hope you are well acquainted with networking fundamentals such as IP addresses, classful subnetting, classless subnetting, the meaning of ports, network addresses, and broadcast addresses. A pentester must be perfect in networking fundamentals as well as at least in one operating system; if you are thinking of using Linux, then you are on the right track. In this book, we will execute our programs on Windows as well as Linux. In this book, Windows, CentOS, and Kali Linux will be used.
A hacker always loves to work on a Linux system. As it is free and open source, Kali Linux marks the rebirth of BackTrack and is like an arsenal of hacking tools. Kali Linux NetHunter is the first open source Android penetration testing platform for Nexus devices. However, some tools work on both Linux and Windows, but on Windows, you have to install those tools. I expect you to have knowledge of Linux. Now, it's time to work with networking on Python.