There are some very serious and intricate network tools available at the console, and an easy complement of lighter but just as functional ones too.
Here’s knocker, a port scanner which is slightly dusty from lack of attention.
What it lacks in recent updates it makes up for classy output and a light profile.
And I expect no less, since it’s supposedly written in C and compiles in mere minutes, even on this machine.
knocker has only a few options, so you’ll master it in only a few tries. The
-help flags are more than enough for a full introduction.
Port scanners may or may not be useful to you; I have all the networking credibility of an old running shoe, so I rarely — very, very rarely — need one.
Give it a try though. It might be quicker and easier to handle than your traditional network Swiss Army knife.