Zenmap is a free and open source official Nmap GUI for Linux, Windows, Mac OS X, BSD. It is a network discovery and security auditing application. It comes with pre-defined scan profiles and you can also save frequently used scans , saved scan results, compare two scan results and find differences between two scans, advanced techniques for mapping out networks filled with IP filters, firewalls, routers, and other obstacles and more.
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How to install Zenmap on Ubuntu
You can install Zenmap via flatpak package file from flathub. First install flatpak and flathub on your system and restart it after the installation. You need to follow below link for the installation flatpak installation instructions.
Now open the terminal using ctrl+alt+t keys and run below Zenmap flatpak install command. It will install the latest Zenmap app on your system
flatpak install flathub org.nmap.Zenmap
After that open Zenmap using below command or via sgow applications menu from the Ubuntu dock.
flatpak run org.nmap.Zenmap
You can also uninstall Zenmap using below commands.
flatpak uninstall org.nmap.Zenmap
sudo flatpak uninstall org.nmap.Zenmap