The virtual appliance uses a non-privileged user account for SSH access. Root is not permitted to log in via SSH. In order to work as root via SSH, first log in as sshuser, then become root with the su command.
The preset sshuser password is he12dgeh0g.
Change it as soon as you start a new virtual appliance.
The following steps show how to access the system via SSH.
From a Linux/Unix Host:
From a Windows Host: