[detaro]

I'd assume they are talking about the typical practice of disallowing ssh logins as root (instead logging in as a user and then using sudo for administrative tasks)

[jnbiche]

Thanks, I didn't pick that up, although I often do that on my SSH config. For some reason, "block root access" in lieu of "block root log-in" just didn't register for me as referring to SSH config. Thank you for explaining instead of just downvoting.

[pietroalbini]

Yep, that was it!