Nmap or Network Mapper is a security scanner, used to discover hosts and services on a computer network, thus building a "map" of the network. Nmap sends specially crafted packets to the target host(s) and then analyzes the responses.
The software provides a number of features for probing computer networks, including host discovery and service and operating-system detection. These features are extensible by scripts that provide more advanced service detection, vulnerability detection, and other features. Nmap can adapt to network conditions including latency and congestion during a scan. The Nmap user community continues to develop and refine the tool.
Nmap started as a Linux-only utility,but porting to Windows, Solaris, HP-UX, BSD variants (including OS X), AmigaOS, and IRIX have followed. Linux is the most popular platform, followed closely by Windows.
Cedits : Wikipedia
- Host discovery
- Port scanning
- Version detection
- OS detection
- Scriptable interaction with the target