I am looking at turning up an amazon AWS windows server 2008 r2 datacenter instance and want to enable failover for a VPN tunnel in case one ISP goes down. 2 VPN tunnels from the server to a Dual WAN cisco router over 2 different ISPs - so that if one ISP goes down, the other will work - while still providing for RDP access over the WAN IP.
How can this be done cost efficiently.