Nmap, scans your computer ports

Nmap is a security tool used, among other things, show open ports of a team. It is also possible to "request" Nmap to show us additional information on each port as well as the operating system itself.

As Nmap is included in the Ubuntu repositories, so installation is simple:sudo apt-get install nmapOnce installed, you can do the most basic test:

As you can see, on my computer I have 3 ports