x11vnc allows you to see the desktop the user is seeing. I think vnc by default creates its own sessions.
So for example, my mom would say "I am not sure where to find the pictures". I would move the folder to her Desktop from ssh, hoping the would see it. But if not I ssh in, then launch x11vnc then connect to it with a vncclient and then move around her desktop to see what the problem might be.
She would see the mouse move and buttons getting clicked.
Bandwidth is not a problem because, we have have something like 50Mpbs connections, latency is usually the issue as the signal has to go half way around the world.
So for example, my mom would say "I am not sure where to find the pictures". I would move the folder to her Desktop from ssh, hoping the would see it. But if not I ssh in, then launch x11vnc then connect to it with a vncclient and then move around her desktop to see what the problem might be.
She would see the mouse move and buttons getting clicked.
Bandwidth is not a problem because, we have have something like 50Mpbs connections, latency is usually the issue as the signal has to go half way around the world.