ansible-playbooks/roles/iptables/tasks/main.yml

- block:
    - name: set firewall_cfg
      set_fact:
        firewall_cfg: "{{ firewall_default_config | d({}) |
          combine(firewall_ssh_config if (firewall_use_ssh | d(true) == true) else {}, recursive=true, list_merge='append') |
          combine(role_firewall_config | d({}), recursive=true, list_merge='append') |
          combine(firewall_collected_configs | d({}), recursive=true, list_merge='append') |
          combine(firewall | d({}), recursive=true, list_merge='append') }}"


    - name: install iptables
      include_tasks: tasks/install_packages.yml
      vars:
        package:
          - iptables
          - alpine: iptables-openrc
          - debian: iptables-persistent


    - name: edit service config
      lineinfile:
        path: /etc/conf.d/iptables
        regexp: "^IPTABLES_SAVE="
        line: "IPTABLES_SAVE=\"{{ iptables_file }}\""
      when: ansible_distribution == 'Alpine'


    - name: template iptables schema
      template:
        src: iptables.j2
        dest: "{{ iptables_file }}"
        force: yes
        lstrip_blocks: yes
      register: result


    - name: load iptables
      community.general.iptables_state:
        path: "{{ iptables_file }}"
        state: restored
      async: "{{ ansible_timeout }}"
      poll: 0
      when: result.changed


    - name: start and enable iptables
      service:
        name: iptables
        enabled: yes
        state: started
      when: ansible_distribution == 'Alpine'


    - name: start and enable netfilter-persistent
      service:
        name: netfilter-persistent
        enabled: yes
        state: started
      when: ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'

  when: firewall is mapping or role_firewall_config is mapping or (host_firewall | d(false) == true)