ssh + tmux is also my way to go. Just to add: tmux provides a read-only switch that guest (students, support, colleagues) won't interfere with the session, but

ssh + tmux is also my way to go. Just to add: tmux provides a read-only switch that guest (students, support, colleagues) won't interfere with the session, but can give advices/ask questions through another channel e.g. phone, irc, ... tmux a -r -t ${SESSION_NAME} -S ${SESSION_SOCKET}