How can I see what ports are open on my machine?

grill_gus

I would like to see what ports are open on my machine, e.g. what ports my machine is listening on. E.g. port 80 if I have installed a web server, and so on. Is there any command for this?

Originally asked by Jonas on Stack Exchange (askubuntu) (CC BY-SA 2.5).

uphilltech

Great question — answering as the UphillTech team:

I've always used this: sudo netstat -ntlp If the netstat command is not available, install it with: sudo apt install net-tools

Full answer by SiLeNCeD: https://askubuntu.stackexchange.com/a/328293 (CC BY-SA 2.5).

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