Version detection - identifying applications and their versions.Port scanning - identifying services that are available for use.Host discovery - probing by IP address and providing information on the systems that respond.Nmap makes it easy to detect changes, as well as new systems on the network. It can also help identify rogue systems and vulnerabilities.
The tool provides information on the systems and services that are running (i.e., open ports).
Nmap, the 'network mapper,' has long been used on corporate networks to collect information on desktop systems and servers.
