identifying applications with connections

dadof5 · 01-31-2006, 04:58 PM

Hello,
I am wondering how I find out which applications have connections open to the internet and what addresses they are connected to. For instance I have clamav + freshclam installed and freshclam will open a connection in the background. I can see it on KSysGuard but it doesn't show the details of the connection. At other times I have used wget but I couldn't see that in KSysGuard at all. I'd like to be able to check that nothing is going on that shouldn't be.
Thanks.

pljvaldez · 01-31-2006, 05:02 PM

First, I would search the web for a free web based firewall test program. That'll scan all your ports and tell you what is open. The one that comes to mind is "ShieldMyPC", but that may not be right (it's been a while since I checked my firewall). Google for free firewall test...

win32sux · 02-03-2006, 03:54 AM

a firewall test utility would be completely useless if you're trying to see the connections (and relevant processes) which are active on your box...

what you want is to execute some commands like this (as root):

Code:

netstat -pantu

Code:

lsof -i

just my

...