I've installed the Enable Root SSH Access plugin to my ReadyNAS Ultra 4. It used to work, but now I'm only getting this message:
$ ssh email@example.com firstname.lastname@example.org's password: Last login: Fri Sep 13 20:07:33 2013 from 192.168.1.16 on pts/0 Linux leviathan 22.214.171.124.RNx86_64.2.4 #1 SMP Thu Jul 26 05:00:36 PDT 2012 x86_64 GNU/Linux Last login: Fri Sep 13 20:07:55 2013 from 192.168.1.16 Connection to 192.168.1.3 closed.
The connection is closed immediately, never giving me a chance to input any commands. The only change that has happened since SSH worked (that I know of) is updating the firmware of the NAS. Also, the SSH plugin isn't showing up in the "Installed Add-ons" list. Any chance the firmware update screwed up the SSH plugin? I successfully installed the plugin again, but with no effect.