diff --git a/metznet/system/base-system.scm b/metznet/system/base-system.scm
index 84d5ff6..bb674a2 100644
--- a/metznet/system/base-system.scm
+++ b/metznet/system/base-system.scm
@@ -251,7 +251,8 @@
 
 (define %metznet-services
   (list (service openssh-service-type
-                 (openssh-configuration (extra-content
+                 (openssh-configuration (password-authentication? #f)
+                                        (extra-content
                                          "KerberosAuthentication yes")))
         (service krb5-service-type %metznet-krb5-config)
         (service pam-krb5-service-type