--- rootfs.orig/etc/ssh/sshd_config
+++ rootfs/etc/ssh/sshd_config
@@ -25,7 +25,7 @@ LogLevel INFO
 
 # Authentication:
 LoginGraceTime 120
-PermitRootLogin without-password
+PermitRootLogin no
 StrictModes yes
 
 RSAAuthentication yes