Yes, that's true. There's no way anyone can log in as root while the settings are set this way. It is however slightly confusing and misleading to have PermitRootLogin set to yes by default. That's my point.
-- sshd and root access policy inconsistency https://launchpad.net/bugs/91114 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs