Aw man, I was hoping this would be a passthrough mode for the transport.<p>Sometimes I'd like to have secure authentication but otherwise have no encryption — the overhead is way too high on slower boxes when you have a good amount of bandwidth available. One classic case I'd run into is using a nice old Sparc workstation as a remote X terminal to a fast new box: if I used SSH to forward the X session its process would regularly spike the local CPU, so I would end up just using a completely insecure X server instead.<p>It can be too slow even on decently fast boxes when you have gigabits of bandwidth available — I'd just end up piping tar through netcat to avoid the overhead.