If you want to find out which program (daemon, app, etc) is using the port in unix environmnet (at least in linux), then netstat come in handy.

run this command in prompt

netstat -tlnp | grep :25

and it gives out result like

[~]# netstat -tlnp | grep :25
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      2739/??????

where the ?????? part is the answer you are looking for

This entry was posted on Thursday, October 6th, 2011 at 11:15 and is filed under DailyStuff, serversandstuff. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.