I am trying to create a custom VPN on an amazon VPC. I am doing this because the other end of the VPN tunnel does not support the VPN that amazon provides. I have setup linux server instance with OpenSwan installed and connected successfully to the VPN. I then need another (windows) server on the same VPC to be able to forward all traffic to a particular IP range through that VPN instead of over the internet (and receive traffic back). My model for this is: http://www.techsmog.com/index.php/2011/05/03/openswan-amazon-vpc-and-cisco-asa-putting-it-all-together/
. However, I think that some routing configurations have changed since this person posted this and that I am having problems with the routing. I believe the problem is on the return traffic but am not 100% sure. If anyone has done this before or has some ideas on how to proceed / isolate the problem, please advise. Thank you.
If this is not possible I would appreciate a solution that would allow a software VPN to run in a robust way on the windows server (although it seems less reliable than a dedicated linux instance for this purpose).