This may be a simple question to answer, and I apologize if it's a duplicate. I looked through the suggestions and nothing jumped out at me as the right answer, so here goes:

My office has several workstations, Macs and Windows boxes. We do have a firewall and a VPN solution, so getting in to the network from outside is easy. Likewise, we use GoToMeeting for demos and when we help our customers with their issues. But we have one workstation that has certain testing tools on it, and instead of walking across the office to this machine, I'd like to access it from my desk (and monitor it). I will need to open a command line and run commands.

I could start a GoToMeeting and do it this way, but that seems overkill and clunky. Is there a simpler tool that allows pseudo-remote access within the same office/network for this kind of access?