How to find application that opened port

  • Thread starter Thread starter Durango2008
  • Start date Start date
D

Durango2008

Hi I am analyzing my network activity and I have found a port that opened up
for UDP connection. I am trying to figure out what has opened up this port
and I cannot.
I installed FPort and it did not list the port being mapped to an
application running on my machine.
Anyway, I am wondering what I should do at this point? are there any other
tools that may help find the culprit program?
I appreciate any info. thank you.
 
Durango2008 said:
Hi I am analyzing my network activity and I have found a port that opened
up for UDP connection. I am trying to figure out what has opened up this
port and I cannot.
I installed FPort and it did not list the port being mapped to an
application running on my machine.
Anyway, I am wondering what I should do at this point? are there any other
tools that may help find the culprit program?
I appreciate any info. thank you.
Click to expand...

From the command line you can enter "netstat /a /o".

This will list all active and listening ports and the associated process ID.
Once you have the process ID you can find the process name in Task Manager.

I use TCPView from sysinternals as a more visually appealing way of
monitoring ports:

http://www.microsoft.com/technet/sysinternals/Utilities/TcpView.mspx

Ed Metcalfe
 
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