Recently someone using a computer of mine started a remote session with GoToMeeting and allowed someone to control the PC. UAC didn't block the session (they're a regular user). It appears that many of the remote access tools ignore UAC and regular users can invite anyone to control the PC.
Are there any methods of blocking tools like GoToMeeting, join.me or TeamViewer on a regular Windows 7 PC?
So far the only thing that seems feasible is blocking the websites serving up these tools, but there are easy ways around that.
Many of these tools seem to dynamically use ports that are open, so port blocking doesn't seem feasible either, but I might be wrong.