Nmap (Network Mapper) is like the king of all network scanners. Nmap has may functionalities, such as enabling a penetration tester to scan for open ports, determine services and their versions, detect the target operating systems and versions, and detect network sniffers and vulnerabilities.
NetHunter gives us several options to perform a scan, but here we will focus on arguably the most powerful and well-known one, called nmap. Nmap has proven to be a very popular port-scanning utility across most major operating systems due to its flexibility, power, ease of use, and extensibility. Many penetration testers, as well as network admins, have come to rely on the software application over the years. If you have never used it before, you may find yourself relying on it more after our usage of it here in NetHunter.