--- /etc/ssh/sshd_config.orig    2017-12-13 10:12:21.098005827 +0000
+++ /etc/ssh/sshd_config 2017-12-13 10:14:11.461687661 +0000
@@ -25,7 +25,7 @@
 
 # Authentication:
 LoginGraceTime 120
-PermitRootLogin without-password
+PermitRootLogin no
 StrictModes yes
 
 RSAAuthentication yes
@@ -49,7 +49,7 @@
 ChallengeResponseAuthentication no
 
 # Change to no to disable tunnelled clear text passwords
-#PasswordAuthentication yes
+PasswordAuthentication no
 
 # Kerberos options
 #KerberosAuthentication no