Install nmap if you don't already have it on your Linux computer. Run "sudo apt-get install nmap" on Ubuntu, or "sudo dnf ...

Nmap is an essential tool for anyone who's serious about network security. It can be installed on any Linux distribution.

I downloaded the nmap RPM (along wtih the frontend) on my RH 8.0 box. I can use nmap just fine from the shell but can't find out how to use the frontend anywhere (searched here, searched the FAQ). Umm ...