I have two address ranges in our building.
The primary one is 10.0.0.1/255. The subnet is 255.255.255.0 and the gateway is 10.0.0.1. It consists of our Small Business Server 2003, fileservers and all of our network workstations and printers. All nodes are attached to a Linksys router that is set up as a DMZ behind a Comcast Business gateway
The second range is 10.1.22.1/255. The subnet is 255.255.255.0 and the gateway is 10.1.22.1. It consists of IP addressable hardware that we sell. It is a test network. The router's WAN port is attached to the Domain so the "test" network can have access to the web, and so that computers on the 10.0.0.1/255 network can access the web interface built into the router.
I have one user that accesses both of these networks from his workstation using two NICs.
This user routinely access the 10.0.0.x network via VPN from job sites and home. He wants to be able to access devices on both networks via VPN.
How can this be accomplished?