I have a couple of win2k machines that are on separate networks and separate domains. I need a persistent and secure TCP/IP tunnel between the two.
What is the quickest, cheapest, and most reliable way to get that going.
I can not use hardware based VPN since one of the servers is not owned by us and can we can not place additional hardware there.
The connection needs to be established at boot up and needs to stay connected so that our TCP/IP application can communicate securely.
Our app is a simple socket to socket TCP/IP over a single port that is persistent.