ansible/test/roles/prepare-firewall/tasks/main.yml

---
- name: Install firewall
  package:
    name: "{{ firewall.package_name[ansible_facts.os_family] }}"
    state: present

- name: Start and enable firewall
  service:
    name: "{{ firewall.package_name[ansible_facts.os_family] }}"
    state: started
    enabled: true