Unable to track the application with the help of a UDP port number.

v11pandey · 12-28-2012, 12:42 AM

Hi,

In my Linux server there is some application using 51164 upd port. I know its going to a specific IP but unable to trace which application is using that port.
So that i can kill the application

It tried for
netstat -e | grep 51164
netstat -aune | grep 51164
lsof -Pnl +M -i4
and even had a look in /etc/services but still unable to find.

Thanks in advance
//
vivek

RaviTezu · 12-28-2012, 01:17 AM

Hi v11pandey,

Run the following command as root:

Quote:

netstat -anp|grep portnumber

i.e netstat -anp|grep 51164 in your case.

v11pandey · 12-28-2012, 02:24 AM

Hi Ravi,

Thanks for you reply...
but netstat -an --> didn't worked

output are as below

root@segotl0269# netstat -an | grep 56114
root@segotl0269# ps -ef | grep 51164
root 30131 30990 0 09:21 pts/2 00:00:00 grep 51164

Is there any condition of relation between output of above 2 command. ?

RaviTezu · 12-28-2012, 02:30 AM

Quote:

netstat -anp

will show you if a port is being used.

I guess.. the port isn't open.

RaviTezu · 12-28-2012, 02:44 AM

Quote:

Originally Posted by v11pandey

root@segotl0269# netstat -an | grep 56114
root@segotl0269# ps -ef | grep 51164
root 30131 30990 0 09:21 pts/2 00:00:00 grep 51164

Is there any condition of relation between output of above 2 command. ?

Yes,

"netstat" gives you the network statstics like information about ports states,connection types..etc.

Where as "ps" gives you the information of the running processes.

Use the man pages for more information.