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Manage OPNsense firewalls

Andreas Stürz



477 latest version

5.0 quality score

Version information

  • 1.5.0 (latest)
  • 1.4.0
  • 1.3.0
  • 1.2.0
  • 1.1.1
  • 1.1.0
  • 1.0.0
released Aug 24th 2021
This version is compatible with:
  • Puppet Enterprise 2021.3.x, 2021.2.x, 2021.1.x, 2021.0.x, 2019.8.x
  • Puppet >= 6.21.0 < 8.0.0
  • CentOS

Start using this module

  • r10k or Code Manager
  • Bolt
  • Manual installation
  • Direct download

Add this module to your Puppetfile:

mod 'andeman-opnsense', '1.5.0'
Learn more about managing modules with a Puppetfile

Add this module to your Bolt project:

bolt module add andeman-opnsense
Learn more about using this module with an existing project

Manually install this module globally with Puppet module tool:

puppet module install andeman-opnsense --version 1.5.0

Direct download is not typically how you would use a Puppet module to manage your infrastructure, but you may want to download the module in order to inspect the code.



andeman/opnsense — version 1.5.0 Aug 24th 2021

Unit Tests Acceptance Tests codecov Puppet Forge Puppet Forge Downloads


Table of Contents

Module description

The opnsense module configures OPNsense firewalls.

It allows administrators to manage an OPNsense firewall directly via the sysutils/puppet-agent opnsense plugin and/or manage multiple firewalls from a bastion host running a puppet-agent with opn-cli installed.

The main target of module is to enable GitOps for your network security policies. Developers could submit pull request for new firewall rules and the network or ops team could review it and deploy it to a pre production environment for testing.

You can automate the following with the module:

  • plugins
  • firewall aliases
  • firewall rules


OPNsense firewall

If you want to manage your firewall directly with a puppet-agent running on the device.


OPNsense plugins:

Install requirements


Install plugin: sysutils/puppet-agent

Bastion host

If you want a bastion hosts running a puppet-agent which could manage multiple firewalls via https API calls.


  • opn-cli
  • puppetlabs/resource_api (puppet < 6.0)

Install requirements

$packages = [
$pip_packages = [
package { $packages:
    ensure => present,
-> package { $pip_packages:
    ensure   => latest,
    provider => 'pip3',

Access to the OPNsense api

If you want to manage an OPNsense firewall, you need to supply credentials and connection information for the device.

To create an api_key and api_secret see:

If you want to use ssl verification (recommended):`

To download the default self-signed cert, open the OPNsense web gui and go to System->Trust->Certificates. Search for the name: "Web GUI SSL certificate" and press the "export user cert" button.

If you use a ca signed certificate, go to System->Trust->Authorities and press the "export CA cert" button to download the ca.

Save the cert or ca and make sure the puppet agent is able to read it.


Install and enable opnsense

include opnsense

Configure OPNsense firewall(s)

You can manage multiple opnsense firewalls with this module.

In the following example a single OPNsense firewall running a puppet agent is manged which allows clients to export firewall rules and aliases via exported resources (manage_resources => true):

# node:

class { 'opnsense':
  manage_resources => true,
  devices => {
    '' => {
      'url'        => '',
      'api_key'    => 'your_api_key',
      'api_secret' => 'your_api_secret',
      'ssl_verify' => true,
      'timeout'    => 60,
      'ca'         => '~/.opn-cli/ca.pem',
      'plugins'    => {
        'os-helloworld' => {}
  aliases => {
    'my_http_ports_local' => {
      'devices'          => ['localhost'],
      'type'             => 'port',
      'content'          => ['80', '443'],
      'description'      => 'example local http ports',
      'enabled'          => true,
      'devices'          => [''],
      'sequence'         => '100',
      'action'           => 'pass',
      'interface'        => ['lan'],
      'protocol'         => 'TCP',
      'destination_net'  => 'client1_example_com',
      'destination_port' => 'https',
      'ensure'           => present
  rules   => {
    'allow all from lan and wan' => {
      'devices'   => ['localhost'],
      'sequence'  => '1',
      'action'    => 'pass',
      'interface' => ['lan', 'wan']

Configure a client to export firewall aliases and rules

This feature use exported resources. You need to enable catalog storage and searching (storeconfigs) on your primary puppet server.

Here the client ( is exporting it´s security configuration to the firewall ( defined above:

# node:

class { 'opnsense::client::firewall':
  aliases => {
    'client1_example_com' => {
      'devices'     => [''],
      'type'        => 'host',
      'content'     => [''],
      'description' => ' alias',
      'enabled'     => true,
      'ensure'      => present
  rules => {
    'allow https from lan to' => {
      'devices'          => [''],
      'sequence'         => '100',
      'action'           => 'pass',
      'interface'        => ['lan'],
      'protocol'         => 'TCP',
      'destination_net'  => 'client1_example_com',
      'destination_port' => 'https',
      'ensure'           => present

Dealing with self-signed certificates

When connecting to the OPNsense API, this module will tell opn-cli to use the system-wide installed CA certificates to verify the SSL connection. However, this will only work when using a valid certificate for the OPNsense WebUI.

If the OPNsense WebUI still uses the pre-installed self-signed certificate, then it is possible to use the OPNsense CA certificate for SSL verification:

class { 'opnsense':
  use_system_ca => false,
  ca_file       => '/root/.opn-cli/ca.pem',
  ca_content    => '-----BEGIN CERTIFICATE-----

The OPNsense CA certificate can be downloaded from System: Trust: Authorities on the OPNsense firewall.

More examples

You find more examples in the examples folder.


Types and providers are documented in


For an extensive list of supported operating systems, see metadata.json


CI/CD is done via Github Actions.


You need to install the following requirements to setup the local development environment:

Create the local development environment


Running unit tests

Unit testing uses pdk


Running acceptance tests

Acceptance testing uses puppet litmus.





Please use the GitHub issues functionality to report any bugs or requests for new features. Feel free to fork and submit pull requests for potential contributions.

All contributions must pass all existing tests, new features should provide additional unit/acceptance tests.

Release Notes

See Changelog.