Problems with Remote Desktop, 2008 Server, VPN

[wgbarnum]

This post relates to Remote Desktop Connection, not Terminal Services. If I'm posting in the wrong place, please forgive and point me to a better location.

 

We're a small software shop who has started upgrading dev servers to Win2008. When our people try to connect remotely via a VPN, we get the error message, "Because of an error in data encryption, this session will end. Please try connecting to the remote computer again".

 

We're guessing there's some setting on Windows 2008 itself or on routers that needs to set, but we can't seem to find it. We're stumped. :confused:.

 

Additional facts on the problem are below. Any help 'preciated. Thanks in advance.

 

-Billy B

 

1. The VPN is NOT a Windows VPN software VPN, but a HW-based gateway-to-gateway VPN.
   
2. We can always connect to the server briefly, and sometimes can work for 10-15 minutes before the error occurs.
   
3. RDC clients are Vista Ultimate and WinXP Pro.
   
4. The RDC clients are able to connect to Win2003 servers without a problem.
   
5. When we physically bring the RDC client workstations inside our firewalls and jack into our LAN, the problem does NOT occur.