Zenmap

The official Nmap Security Scanner cross-platform GUI is called Zenmap. A free and open-source (licensed) tool for network discovery and security auditing is called Zenmap (Network Mapper). It is also helpful for many systems and network managers for activities like scheduling service upgrades, keeping track of host or service uptime, and inventorying the network. 

Utilizing unique techniques, Zenmap leverages raw IP packets to identify hosts on the network, the services (name and version of the application) they provide, the operating systems (and OS versions) they run, the kinds of firewalls and packet filters they employ, and a plethora of other details. Although it functions well against a single host, it was intended to quickly scan huge networks. 

All of the main computer operating systems can use Zen map, and official binary versions for Linux, Windows, and macOS are available.

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