I have a machine on my network that has, for no good reason, just stopped accepting any inbound traffic. It has no problems accessing the network and files shares or going out onto the web but no one has access to it at all. Pings fail and accessing file shares fail with "The network path was not found".
It's acting as if there is a firewall of some sort running and it's actively dropping pretty much all inbound traffic. But as far as I can tell, it only has Norton Anti-Virus installed and the Windows firewall active. I've went and disabled both, make sure port filtering is disabled under TCP/IP and I still have do not have access to the machine.
If I boot into safe mode with networking, then there is no problems. It must be some application or service that is running but I can't figure out what. I've run HijackThis and nothing in that list looks out of the ordinary.
The machine is running WinXp sp3 and kept up to date with the latest maintenance.
Anybody has any ideas? Thanks