Nmap is one of the most used tools for network administrators and cybersecurity pros. Nmap or the Network Mapper is an open-source tool, which means it can be used for free.

The role of the Network Mapper is to use commands for scanning and mapping networks. It can be used to detect live hosts on a network, scan different ports, find the operating system of the network along with its version, and perform security auditing. Learn how to use the Nmap tool in this detailed tutorial.