Windows Firewall in Windows Server 2008 has very tight security. For default, ping to Windows Server 2008 won’t get any response. Here’s the configuration to enable ping replies :
Goto Window Firewall with Advance Settings from Administrator Tools menu.
Look into list in the left and Click Inbound Rules
Right click File and Sharing (Echo Request – ICMPv4-In) and choose Enable Rule
Do same thing to Distributed Transaction Coordinator (TCP-In)
Okay, now you can ping your server machine :D