Network Scanning with Nmap: A Practical Guide

Nmap (Network Mapper) is a free and open-source utility for network discovery and security auditing.

It is used to identify devices running on a network, discover open ports, and detect security risks.

Systems administrators and security professionals use it for tasks such as network inventory and managing service upgrade schedules.

Common scan types include TCP Connect scan, SYN scan, and UDP scan, each serving a different purpose and stealth level.