I have a machine that is inconvenient to access physically as it is on a another campus. It is running XP with no software firewall, the firewall being handled by a hardware Sonic device that I don't control, and connects through a VPN. I can ping the machine just fine and that's about it. It does not have any shares.
I have the local administrator credentials but remote desktop is not enabled. It's running an app that is broadcasting traffic on a specific port and I need to find which one.