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What ports are I serving?

Ibon
I develop reliable, secure and beautiful web applications keeping in mind the latest standars, trying to write clean, te
・1 min read

Sometimes we need to know what ports are our server/pc serving.

Few years ago netstat was the command that have us a clue about the ports a machine was listening to. I usually launch

$ netstat -putona

And we got the ports our machine is listening to.

But nowadays Linux servers don't install the net-tools package and we have to use another tools. This case suggest us using ss command. ss is a tool that allow us knowing what ports are listening in our system. ss is netstat replacement and we can do many operations with this command:

ss -a

This command list all ports our system has opened

ss -l

Only returns listening ports

ss -p

Returns the PID of the process running a networking activity.

I use ss -lt | grep "*:" to get current listening ports and check what is happening in my network.

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