lab-ansible/roles/vm-common/tasks/firewall.yml

# vim: ft=yaml.ansible
# code: language=ansible
---
- name: General firewall rules
  notify: Reload firewalld
  block:
    - name: Move main LAN and VPN networks to zone 'drop'
      ansible.posix.firewalld:
        zone: drop
        source: "{{ item }}"
        permanent: true
        state: enabled
      loop:
        - 192.168.1.0/24
        - 192.168.8.0/24

    - name: Move lab network to zone 'dmz'
      ansible.posix.firewalld:
        zone: dmz
        source: 192.168.17.0/24
        permanent: true
        state: enabled

    - name: Move internal network to zone 'internal'
      ansible.posix.firewalld:
        zone: internal
        source: 10.2.0.0/16
        permanent: true
        state: enabled

    - name: Default deny incoming connections to SSH port in zones 'dmz' and 'internal'
      ansible.posix.firewalld:
        zone: "{{ item }}"
        service: ssh
        permanent: true
        state: disabled
      loop:
        - dmz
        - internal

    # Until sapt-labx-ctl01 is deployed
    - name: Allow incoming connections to SSH port in zone 'drop'
      ansible.posix.firewalld:
        zone: drop
        service: ssh
        permanent: true
        state: enabled

    # When sapt-labx-ctl01 is deployed
    # - name: Allow incoming connections from jump host to SSH port in zone 'dmz'
    #   ansible.posix.firewalld:
    #     zone: dmz
    #     source: "{{ hostvars['sapt-labx-ctl01'].ansible_host }}"
    #     service: ssh
    #     permanent: true
    #     state: enabled

- name: Firewall rules for production and staging
  loop:
    - prod
    - stage
  loop_control:
    loop_var: env
  notify: Reload firewalld
  block:
    - name: Allow incoming connections from app servers to PostgreSQL port in zone 'internal'
      ansible.posix.firewalld:
        zone: internal
        source: "{{ hostvars[item].internal_ipv4 }}"
        service: postgresql
        permanent: true
        state: enabled
      loop: "{{ groups['app_' + env] }}"
      when: hostname in groups['db_' + env]

- name: Flush handlers
  ansible.builtin.meta: flush_handlers