netcat — quick reference

Arbitrary TCP and UDP connections and listens

Scan for listening daemon, without sending data

BSD
> nc -z example.com 20-30
GNU
> nc -zv example.com 20-30

Client/Server

BSD
> nc -l 1234 # server
> nc example.com 1234 # client> nc -l 1234 > out.txt # server> nc example.com 1234 < in.txt # clientGNU
> nc -lp 1234
BSD man page

--

--

My experience trailblazing the practice of Cybersecurity

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store