diff --git a/vars/Debian_9.yml b/vars/Debian_9.yml
index a64006d..c7a4503 100644
--- a/vars/Debian_9.yml
+++ b/vars/Debian_9.yml
@@ -13,17 +13,13 @@ sshd_defaults:
     - /etc/ssh/ssh_host_ecdsa_key
     - /etc/ssh/ssh_host_ed25519_key
   UsePrivilegeSeparation: yes
-  KeyRegenerationInterval: 3600
-  ServerKeyBits: 1024
   SyslogFacility: AUTH
   LogLevel: INFO
   LoginGraceTime: 120
   PermitRootLogin: without-password
   StrictModes: yes
-  RSAAuthentication: yes
   PubkeyAuthentication: yes
   IgnoreRhosts: yes
-  RhostsRSAAuthentication: no
   HostbasedAuthentication: no
   PermitEmptyPasswords: no
   ChallengeResponseAuthentication: no