That's it Nmap is a free and open source security scanner that you use to control your network and its security.
Use
- Network inventory
- managing schedules of the services offered
- reception monitoringς
- or uptime services
Mode
It uses a series of IP packets that are shipped and then collected information from them.
Nmap determines which machines are available on the network, what services or hosts they offer, which operating systems are in progress, what types of firewall are in use, and much more.
Designed for fast scanning yet running on all major operating systems. Nmap scans large networks without problem while it is available on Linux, Windows, Mac OSX, AmigaOS, SGISRIX, SOLARIS, etc.
Moral issues
Nmap is a tool that can be characterized as malicious like many tools in this genre. But mostly it is used for reasons protections. Like finding some vulnerability in the network and fixing it.
Legally, Nmap should be used in authorized systems. If scanning is used on an unauthorized system port, this action is considered as illegal and persecuted.
To summarize, Nmap is: a powerful, portable, free and well-supported tool of international reputation and easy to use as it uses C, C ++ and python.
For history
Nmap has 16 years since its creation. Nmap entered the 1 September 1997 market.
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Municipality of Nikolaos, Evangelia Moryagianni @WikiBooks