Quote Originally Posted by Jochi Khan
That should have read.. Programs ...and not Servers.
I see in Windows Firewall that there is an option to make a list of ip addresses that are allowed access a program. So I was incorrect about not being able to specify servers. This setting defaults to "allow all ip addresses access".

Since you already tried disabling the firewalls, that should be enough eliminate them as the cause of the hosting problem. At the moment, I don't have any other ideas about what could be causing the problem.