diff --git a/group_vars/os_centos.yml b/group_vars/os_centos.yml
index d8272d8..8c7fee6 100644
--- a/group_vars/os_centos.yml
+++ b/group_vars/os_centos.yml
@@ -1,6 +1,6 @@
 # Service and package's name of NTP client on Debian
-ntp_service_name: ntpd
-ntp_package: ntp
+ntp_service_name: chronyd
+ntp_package: chrony
 
 # Package's name of sudo package on Debian
 sudo_package: sudo
@@ -23,5 +23,6 @@ tools_package:
   - grep
   - net-tools
 
-# Do not configure iptables/firewall with Ansible
-configure_iptables: false
+# Define iptables save files for CentOS
+iptables_save_file: /etc/sysconfig/iptables
+ip6tables_save_file: /etc/sysconfig/ip6tables
diff --git a/playbook_general_deploy.yml b/playbook_general_deploy.yml
index da7ecd5..a6c4a1e 100644
--- a/playbook_general_deploy.yml
+++ b/playbook_general_deploy.yml
@@ -1,10 +1,10 @@
 ---
 - hosts: all
   roles:
-#    - auto_reboot
-#    - auto_upgrade
-#    - client_ntp
-#    - client_resolvers
-#    - client_tools
-#    - users_sudo
-    - client_iptables # OK for Debian (iptables-persistent mode)
+    - auto_reboot
+    - auto_upgrade
+    - client_ntp
+    - client_resolvers
+    - client_tools
+    - users_sudo
+    - client_iptables