Bookworm setup ssh

OpenSSH is installed in our Debian images, but by default OpenSSH does not permit logging in as the root user as a security measure. Even if logging in as root is enabled, a password must be set for the root account. Additionally, an SSH host key is required if one hasn't already been created (though this should automatically be created on the first boot).

It is generally discouraged to allow the root user to log in directly. Instead, a user account should be created, with a password set on it. No changes are needed to the OpenSSH configuration file to allow a non-root user to log in.

However, in order to login to a device as root via SSH, the following steps must occur:

sed --in-place 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
systemctl restart ssh.service
passwd root # Set any password