Monitoring ports in Linux

Question

How to find out what processes are listening on specific ports in Ubuntu?

score 7 · Answer 1 · answered Aug 03 '09 at 12:43

7

Assuming that you are root.

netstat -lnp

The 4th and 7th fields are what you want.

Alternatively you can get much more detailed information with lsof(1).

answered Aug 03 '09 at 12:43

Dan Carley

score 3 · Accepted Answer · answered Aug 03 '09 at 12:45

3

lsof -i :<port #>

answered Aug 03 '09 at 12:45

TCampbell

1

This will show only processes owned by user. So, unless you're logged in as root, prepend sudo. – xyz Aug 03 '09 at 12:57

score 2 · Answer 3 · answered Aug 03 '09 at 12:42

2

best way i know of is:

netstat -lpn

run as super user

answered Aug 03 '09 at 12:42

goose

score 0 · Answer 4 · answered Mar 17 '10 at 19:59

0

This works pretty well for me on linux only:
netstat -anp|egrep -i 'PID/Program|LISTEN'

-a = All sockets -n = doNt resolve IPs -p = show Pids/Programs associated with each

answered Mar 17 '10 at 19:59

ericslaw

score 0 · Answer 5 · answered Mar 17 '10 at 20:10

0

su -c netstat -lpna

answered Mar 17 '10 at 20:10

Rajat

5 Answers5