I have a server running Windows Server 2008 x64 that stopped responding to ping and can't be connected to via TS. However, when I got on the machine directly, I was able to ping, access internet, etc., just fine. That is, the server can ping anything on the network, but not vice versa, even from another server in the same rack, same switch, etc. In further weirdness, I can browse the server through explorer, open / edit files that are shared from it, etc., just fine.
Unfortunately, in the interests of "I need TS to be working now", I rebooted the server and that made the problem go away, but in case it crops up again, anybody have any ideas on what the problem might have been (and more importantly, if there's a way to resolve it without rebooting)?