[lug] Who is listening?

[Daniel Webb]

I have been securing my sytems a bit, and noticed this:

$ netstat -lnp 

<...>
tcp        0      0 0.0.0.0:2049            0.0.0.0:*               LISTEN -                   
<...>
tcp        0      0 0.0.0.0:38574           0.0.0.0:*               LISTEN -               
<...>

$ lsof -i TCP:2049
$ lsof -i TCP:38574

The -p option to netstat gives the PID and process name for all other
listeners.  How do I find out what these listeners are for?  On another system
I have:

tcp        0      0 0.0.0.0:2494            0.0.0.0:*               LISTEN -