initial version of pf module

roles/pf/defaults/main.yml

@@ -0,0 +1,6 @@
+---
+
+firewall_in:
+  - {proto: tcp, port: 22}
+
+firewall_raw: []

roles/pf/handlers/main.yml

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+---
+
+- name: reload pf
+  command: /sbin/pfctl -f /etc/pf.conf

roles/pf/tasks/main.yml

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+---
+
+- name: copy pf.conf
+  copy:
+    src: "{{ firewall_src }}"
+    dest: /etc/pf.conf
+    mode: 0600
+    owner: root
+    group: "{{ ansible_wheel }}"
+  notify: reload pf
+  when: firewall_src is defined
+
+- name: create pf.conf from template
+  template:
+    src: pf.conf.j2
+    dest: /etc/pf.conf
+    mode: 0600
+    owner: root
+    group: "{{ ansible_wheel }}"
+  notify: reload pf
+  when: firewall_src is not defined

roles/pf/templates/pf.conf.j2

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+
+set block-policy return
+set skip on lo0
+
+block in
+pass out
+
+pass in quick proto icmp
+pass in quick proto icmp6
+
+{% for rule in firewall_raw %}
+{{ rule }}
+{% endfor %}
+{% for rule in firewall_in %}
+  {% if rule.from is defined %}
+    {% for from in rule.from | ipaddr %}
+pass in quick proto {{ rule.proto }} from {{ from }} to port {{ rule.port }}
+    {% endfor %}
+  {% else %}
+pass in quick proto {{ rule.proto }} to port {{ rule.port }}
+  {% endif %}
+{% endfor %}