.. _readme:

ufw-formula
===========

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Formula to set up and configure ufw

.. contents:: **Table of Contents**

General notes
-------------

See the full `SaltStack Formulas installation and usage instructions
<https://docs.saltstack.com/en/latest/topics/development/conventions/formulas.html>`_.

If you are interested in writing or contributing to formulas, please pay attention to the `Writing Formula Section
<https://docs.saltstack.com/en/latest/topics/development/conventions/formulas.html#writing-formulas>`_.

If you want to use this formula, please pay attention to the ``FORMULA`` file and/or ``git tag``,
which contains the currently released version. This formula is versioned according to `Semantic Versioning <http://semver.org/>`_.

See `Formula Versioning Section <https://docs.saltstack.com/en/latest/topics/development/conventions/formulas.html#versioning>`_ for more details.

Contributing to this repo
-------------------------

**Commit message formatting is significant!!**

Please see :ref:`How to contribute <CONTRIBUTING>` for more details.

Available states
----------------

.. contents::
    :local:

``ufw``
^^^^^^^
Installs and configures the ufw package.

``ufw.package``
^^^^^^^^^^^^^^^
Installs the ufw package.

``ufw.config``
^^^^^^^^^^^^^^
This state manages the file ``ufw.conf`` under ``/etc/ufw`` (template found in "ufw/files"). The configuration is populated by values in "ufw/map.jinja" based on the package's default values (and RedHat, Debian, Suse and Arch family distribution specific values), which can then be overridden by values of the same name in pillar.


Usage
-----

All the configuration for the firewall is done via pillar (pillar.example).

Enable firewall, applying default configuration:

.. code-block:: javascript

   ufw:
     enabled: True

Allow 80/tcp (http) traffic from only two remote addresses:

.. code-block::

   ufw:
     services:
       http:
         protocol: tcp
         from_addr:
           - 10.0.2.15
           - 10.0.2.16

Allow 443/tcp (https) traffic from network 10.0.0.0/8 to an specific local ip:

.. code-block::

   ufw:
     services:
       https:
         protocol: tcp
         from_addr:
           - 10.0.0.0/8
         to_addr: 10.0.2.1

Allow from a service port:

.. code-block::

   ufw:
     services:
       smtp:
         protocol: tcp

Allow from an specific port, by number:

.. code-block::

   ufw:
     services:
       139:
         protocol: tcp

Allow from a range of ports, udp:

.. code-block::

   ufw:
     services:
       "10000:20000":
         protocol: udp

Allow from a range of ports, tcp and udp

.. code-block::

   ufw:
     services:
       "10000:20000/tcp":
         to_port: "10000:20000"
         protocol: tcp
       "10000:20000/udp":
         to_port: "10000:20000"
         protocol: udp

Allow from two specific ports, udp:

.. code-block::

   ufw:
     services:
       "30000,40000":
         protocol: udp

Allow an application defined at /etc/ufw/applications.d/:

.. code-block::

   ufw:
     applications:
       - OpenSSH

Testing
-------

Linux testing is done with ``kitchen-salt``.

``kitchen converge``
^^^^^^^^^^^^^^^^^^^^

Creates the docker instance and runs the ``template`` main state, ready for testing.

``kitchen verify``
^^^^^^^^^^^^^^^^^^

Runs the ``inspec`` tests on the actual instance.

``kitchen destroy``
^^^^^^^^^^^^^^^^^^^

Removes the docker instance.

``kitchen test``
^^^^^^^^^^^^^^^^

Runs all of the stages above in one go: i.e. ``destroy`` + ``converge`` + ``verify`` + ``destroy``.

``kitchen login``
^^^^^^^^^^^^^^^^^

Gives you SSH access to the instance for manual testing.