What process is behind a network port?

What process is behind a network port?

Did you ever wonder if you type e.g. netstat -an | grep 8110, and you get as response:

$ netstat -an | grep 8110
tcp        0      0 0.0.0.0:8110            0.0.0.0:*               LISTEN

what process is listening to this port 8110?

Well, there are two ways to find out:

• One method is by using the netstat command with some smarter options used:

$ netstat -tulpn | grep LISTEN
tcp        0      0 0.0.0.0:8110            0.0.0.0:*               LISTEN      14970/wd.sapZD0_W00

• Second method is by using the ss command:

$ ss -tlpn
State      Recv-Q      Send-Q      Local Address:Port      Peer Address:Port     Process
LISTEN     0           512         0.0.0.0:8110            0.0.0.0:*             users:(("wd.sapZD0_W00",pid=14970,fd=17))

Nothing special, but handy to remember.