We have configured a Site-to-Site VPN connection between our on-premises location and Windows Azure, and while connectivity appears to work for the most part, we are finding that our on-premises member servers running Windows Server 2008 R2 cannot communicate with our Azure VMs running Windows Server 2012.
Our network subnets are as follows:
- Local Network (on-premises): 192.168.1.0/24
- Virtual Network (in Azure): 192.168.32.0/24
The VMs in Azure running Server 2012 can communicate with our on-premises servers running Server 2003 and our workstations running Windows 7. Plus, our two local domain controllers (running Server 2003 and 2008 R2) cancommunicate with the domain controller we've set up in Azure (running Server 2012) and vice-versa.
Our workstations and on-premises servers are all in the same subnet, and all the servers are members of the same domain. I have tried disabling the built-in Windows Firewall on a pair of the problematic servers (one in each subnet), but that doesn't make a difference.
Is there something else that would prevent the 2008 R2-and-later servers from communicating with each other across the subnets? Any help would be greatly appreciated.