I have ran into some frustrations with the SSH server program. I am running OS 2008 on an n800.

First... I cannot for the life of me get key authentication working. I would like to eventually deny root login to the device, use keys to log in as user (and sudo when necessary), and also change the port required for SSH. However, as you can guess, I am stuck at step one. I keep on getting key rejection errors in Putty on all attempts.

Second, does the SSH server have to run at all times? Would it work better if there was just a link in the menu to disable SSH and another to enable SSH? It isn't a perfect solution but it would certainly secure the device. How plausible is this?