init

.ansible-lint.yml

@@ -0,0 +1,4 @@
+---
+skip_list:
+  - fqcn-builtins
+  - experimental

.drone.yml

@@ -0,0 +1,16 @@
+----
+kind: pipeline
+name: default
+steps:
+  - name: integration test
+    image: python:3.9-buster
+    environment:
+      REMOTE_USER: molecule
+      HCLOUD_TOKEN:
+        from_secret: HCLOUD_TOKEN
+    commands:
+      - apt update && apt install -y pwgen
+      - mkdir -p /root/.ansible/roles && ln -sr . /root/.ansible/roles/autonomic.ufw
+      - export INSTANCE_UUID=$(pwgen 8 1)
+      - pip install -r requirements.txt
+      - molecule test

.envrc.sample

@@ -0,0 +1,18 @@
+# Your username that you use for accounts on our machines.
+export REMOTE_USER=
+export ANSIBLE_USER=$REMOTE_USER
+
+# The path to our pass credentials store
+export PASSWORD_STORE_DIR=
+
+# The Hetzner Cloud API token for managing our instances
+# Uncomment the prod/test line below depending on what you're doing
+# export HCLOUD_TOKEN=$(pass show logins/hetzner/prod/api_key)
+# export HCLOUD_TOKEN=$(pass show logins/hetzner/test/api_key)
+export HCLOUD_TOKEN=$(pass show logins/hetzner/cicd/api_key)
+
+# For molecule role testing
+export INSTANCE_UUID=$RANDOM
+
+# So molecule will show credentials in the logs
+export MOLECULE_NO_LOG=False

.yamllint.yml

@@ -0,0 +1,16 @@
+---
+extends: default
+
+yaml-files:
+  - "*.yaml"
+  - "*.yml"
+
+ignore: |
+  .venv
+  .drone.yml
+
+rules:
+  line-length: disable
+  braces:
+    max-spaces-inside: 1
+    level: error

LICENSE

@@ -0,0 +1,15 @@
+autonomic.ufw:  Configures an allow/block list on the firewall using UFW
+Copyright (C) 2022  Autonomic Co-operative <helo@autonomic.zone>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.

README.md

@@ -0,0 +1,3 @@
+# autonomic.ufw
+
+[![Build Status](https://drone.autonomic.zone/api/badges/autonomic-cooperative/autonomic.ufw/status.svg?ref=refs/heads/main)](https://drone.autonomic.zone/autonomic-cooperative/autonomic.ufw)

defaults/main.yml

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+---
+ufw_disallow_ports:
+  - "22"  # blocking the known SSH defaults
+
+ufw_allow_ports:
+  - "222"  # default Autonomic SSH port
+  - "443"  # default webserver SSL port
+  - "80"  # default webserver clear net port

handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: Restart ufw
+  become: true
+  service:
+    name: ufw
+    state: restarted

meta/main.yml

@@ -0,0 +1,17 @@
+---
+dependencies: []
+galaxy_info:
+  role_name: ufw
+  namespace: autonomic
+  author: autonomic
+  description: |
+    Configures an allow/block list on the firewall using UFW, the
+    "uncomplicated firewall", which is a more user friendly front-end for
+    iptables.
+  company: Autonomic
+  license: GPLv3
+  min_ansible_version: 2.9
+  platforms:
+    - name: Debian
+      versions:
+        - buster

molecule/default/converge.yml

@@ -0,0 +1,5 @@
+---
+- name: Converge
+  hosts: all
+  roles:
+    - role: autonomic.ufw

molecule/default/molecule.yml

@@ -0,0 +1,19 @@
+---
+dependency:
+  name: galaxy
+
+driver:
+  name: hetznercloud
+
+platforms:
+  - name: "autonomic.ufw-${INSTANCE_UUID}"
+    server_type: cx11
+    image: debian-10
+
+provisioner:
+  name: ansible
+
+lint: |
+  set -e
+  yamllint -c .yamllint.yml .
+  ansible-lint --exclude .drone.yml -c .ansible-lint.yml .

requirements.txt

@@ -0,0 +1,4 @@
+ansible-lint==6.0.0
+ansible==5.4.0
+molecule-hetznercloud==1.3.0
+molecule==3.6.1

tasks/main.yml

@@ -0,0 +1,33 @@
+---
+- name: Update the package cache
+  apt:
+    update_cache: true
+    cache_valid_time: 3600
+
+- name: Install ufw
+  apt:
+    name: ufw
+
+- name: "Allow access on ports: {{ ufw_allow_ports | join(' ') }}"
+  ufw:
+    rule: allow
+    port: "{{ item }}"
+    proto: tcp
+    state: enabled
+  with_items: "{{ ufw_allow_ports }}"
+  notify: Restart ufw
+
+- name: "Disallow access on ports: {{ ufw_disallow_ports | join(' ') }}"
+  ufw:
+    rule: deny
+    port: "{{ item }}"
+  with_items: "{{ ufw_disallow_ports }}"
+  notify: Restart ufw
+
+- name: Default policy deny
+  ufw:
+    policy: deny
+
+- name: Enable the firewall
+  ufw:
+    state: enabled