As Brewman said VNC from the BOH to the FOH is the best way to go, I have 8 terms this way. I also keep 1 term as a PCAny just in case I want to log directly into that term and bypass the file server. Follow these directions exactly:
1. Load PCAny on the terminal (let's say term1).
2. Launch and add Host, give it name like termx. Go to properties and add yourself as a new caller and password. In settings, check launch eith windows.
3. From PCAny manager go to Tools> Options> Host Communications> Advanced TCP/IP Options and change the default ports which are 5631 and 5632 to 5633 and 5634.
4. Launch the new Host and you're finished with the terminal.
5. Go to your file server or any PC that can access the router. I'll assume you have a router, if not get one and I'll assume a Linksys. Go to the Gaming, port forwarding or similar. All routers will have a place to enter the ports which is where you'll put the 5633 and 5634. On the same line there will be an IP address with the last quadrant empty. This is where you enter the IP of the terminal that you're trying to access. Check enable box if there.
6. Finally, create a new REMOTE icon on the PC you want to use remotely. On the front properties page under Details, change the ports from defult to the new 5633 and 5634 ports.
That should do it. Now from anywhere in the world you can PCAny to the restaurant using the WAN IP or the same IP as to the File server, the port forward will connect you to the terminal instead of the Server. You can do this repeatedly by using the next 2 ports everytime (5635 and 5636...etc)
You should VNC too but that's another lesson.