I built a firmware for an embedded board using Yocto. ssh server Dropbear seems to be up and running and working properly. I can login with the root user without a password. Nevertheless, I cannot mount the filesystem from an Ubuntu desktop using sshfs. On the desktop I'm getting:
sudo sshfs -o allow_other firstname.lastname@example.org:/ /mountpoint remote host has disconnected
in Poky instead I can see in /var/log/messages:
May 7 00:25:37 raspberrypi3 authpriv.info dropbear: Child connection from 10.42.0.1:48010 May 7 00:25:38 raspberrypi3 authpriv.notice dropbear: Auth succeeded with blank password for 'root' from 10.42.0.1:48010 May 7 00:25:38 raspberrypi3 authpriv.info dropbear: Exit (root): Disconnect received
Is it possible to increase the verbosity somehow? I tried to add "verbose = 1" in /etc/default/dropbear but this is probably wrong as the server does not even start anymore. Maybe sshfs is not supported at all by dropbear?