diff --git a/tasks/main.yml b/tasks/main.yml
index 49fc57b..a4807d8 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -11,7 +11,8 @@
 - name: install required software
   package:
     name: "{{ firewall_packages['required'][ansible_distribution]
-          | default(firewall_packages['required']['default']) }}"
+          | default(firewall_packages['required'][ansible_distribution ~ '-' ~ ansible_distribution_major_version]
+          | default(firewall_packages['required']['default'])) }}"
     state: "{{ firewall_package_state }}"
   when:
     - firewall_packages.required is defined
diff --git a/vars/main.yml b/vars/main.yml
index 185a2a6..22ad878 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -9,7 +9,8 @@ firewall_packages:
     CentOS-6:
       - iptables
     CentOS-7:
-      - firewalld
+      - iptables
+      - iptables-services
     Fedora:
       - firewalld
     openSUSE Leap:
@@ -22,11 +23,9 @@ firewall_packages:
     Alpine:
       - firewalld
       - ufw
-    CentOS-6:
+    CentOS:
       - firewalld
       - ufw
-    CentOS-7:
-      - ufw
     Fedora:
       - ufw
     openSUSE Leap: