You may use “ssh admin@[NAS IP]” to login DSM but not root. They are different user. Most configuration need root access to edit. You have to first ssh as admin then use “sudo su –” to root.
admin@DS214SE:/$ sudo su - We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. Password: root@DS214SE:~#
Login as root
After switching to root, use “synouser –setpw root [new password for root]” to give root a different password for security concern. Next time, you may login as root with your new password.
root@DS214SE:~# synouser --setpw root 1$9%A root@DS214SE:~# exit logout admin@DS214SE:/$ sudo su - root@DS214SE:~# exit logout admin@DS214SE:/$ exit logout Connection to 192.168.1.142 closed. Amigos-Mac-mini:.ssh Amigo$ ssh root@192.168.1.142 root@192.168.1.142's password: root@DS214SE:~#
How do i get root access again, step by step? on Synology Community Forum has a detail discussion on this topic.