Chapter 1: Nmap Fundamentals
Network Mapper (Nmap) was originally released by Gordon Lyon, known on the internet as Fyodor, in the infamous Phrack magazine Vol. 7 Issue 51 (https://nmap.org/p51-11.html). It is still acclaimed today as one of the best tools for network reconnaissance and security auditing in cybersecurity. The first public version was introduced as an advanced port scanner along with a paper describing research on novel techniques for port discovery, but since then, it has gone down a long road and become so much more. The Nmap project itself evolved into a family of advanced networking tools that includes amazing projects such as Ncrack, Ncat, Nping, Zenmap, and, built into Nmap itself, the Nmap Scripting Engine (NSE). Fyodor's own description on the official website is as follows:
