Why wouldn't you run VNC or Remote Desktop on your rigs in case you have to control them while away?
Yeah I haven't gotten around to it yet, it's a bit tricky with the dynamic IP and I don't have direct access to the router for port forwarding either, it's a long story but I'm waiting for better internet to become available very soon.
If you use chrome as your browser the extension "chrome remote desktop" is easy no need to bother with ports and ip's it just works.