PermitRootLogin
[COLOR=#ff0000]Specifies whether root can log in using ssh[/COLOR](1). The argument must be “yes”,
“without-password”, “forced-commands-only”, or “no”. The default is “yes”.
[COLOR=#ff0000] If this option is set to “without-password”, password authentication is dis‐
abled for root.[/COLOR]
If this option is set to “forced-commands-only”, root login with public key
authentication will be allowed, but only if the command option has been spec‐
ified (which may be useful for taking remote backups even if root login is
normally not allowed). All other authentication methods are disabled for
root.
[COLOR=#ff0000]If this option is set to “no”, root is not allowed to log in.[/COLOR]