There is a difference in connecting with username/password
and key-based authentication in ssh.
If you enter username/password you (usually) do NOT use the
With key-based authentication you can connect like this:
No need to enter the password (exception would be, if you
used a password protected key, but then your ssh-CLIENT is
asking for the password and NOT the ssh-server).
Your problem with "su" is the missing superuser bit. Unfortunately
you can only set this bit if you are root (superuser).
Maybe you should have a look at the script I wrote for opening
the LS-XHL firmware. You can see there how to solve this problems.http://buffalo.nas-central.org/wiki/Ope ... are_LS-XHL
Look at the section "How to get telnet working in 1.24 or any other LS-XHL or LS-CHLv2 version".
DO NOT USE the executables.tar.gz referenced there. They are NOT
suitable for your machine!!!