hass-opnsense

Join OPNsense with Home Assistant!

hass-opnsense uses the OPNsense REST API) built-in xmlrpc service to integrate OPNsense with Home Assistant. A plugin is currently required to be installed in OPNsense for this to work properly.

Initial development was done against OPNsense 21.7 and Home Assistant 2021.10.

A Discord server to discuss the integration is available, please click the Discord badge at the beginning of the page for the invite link.

Overview

• Installation
  • OPNsense plugin
  • Home Assistant integration
    • HACS installation
    • Manual installation
• Configuration
  • OPNsense
  • HA Config
  • Options
• Entities
  • Binary Sensor
  • Device Tracker
  • Sensor
  • Switch
  • Services
• Known Issues
  • AdGuardHome

Installation

This integration currently replaces the built-in OPNsense integration which only provides device_tracker functionality, be sure to remove any associated configuration for the built-in integration before installing this replacement.

The installation requires a plugin on OPNsense and a custom integration in Home Assistant.

OPNsense Plugin

Use of the integration requires an OPNsense plugin made available on mimugmail repository: https://www.routerperformance.net/opnsense-repo/

First, install the repository:

• open an SSH session on OPNsense and issue the following commands:

fetch -o /usr/local/etc/pkg/repos/mimugmail.conf https://www.routerperformance.net/mimugmail.conf
pkg update

Then, install the plugin. There are two ways to do it:

• In OPNsense web UI, go to System:Firmware:Plugins and install plugin os-homeassistant-maxit
• From SSH shell: pkg install os-homeassistant-maxit

HomeAssistant Integration

In Home Assistant, add this repository to the HACS installation or clone the directory manually.

HACS Installation

In HACS, add this as a custom repository: https://github.com/travisghansen/hass-opnsense.

STEP 1	STEP 2

Then go to the HACS integrations page, search for OPNsense integration for Home Assistant and install it by clicking on 3 dots on the right side and select Download and click on Download on popup window.

Once the integration is installed be sure to restart Home Assistant. Restart option available under Developer tools.

Developer Tools Page	Restart Home Assistant Popup

Manual Installation

Copy the contents of the custom_components folder to the Home Assistant config/custom_components folder and restart Home Assistant.

Configuration

Configuration is managed entirely from the UI using config_flow semantics. Simply go to Configuration -> Integrations -> Add Integration and search for OPNsense in the search box. If it isn't in the list (well-known HA issue), do a 'hard-refresh' of the browser (ctrl-F5) then open the list again.

OPNsense

The official recommendation is that the service user to be created has the admin role.

Create a new admin role user (or choose an existing admin user) and create an API key associated to the user. When creating the API key, OPNsense will push the file containing the API key and API secret to the browser. It will be in the download folder.

Unsupported Alternative

Alternatively, multiple individual permissions can be added for a user. However, it is likely that not all functions will work and there will be errors in the log. This option is unsupported. Identified permissions (very likely incomplete):

• Dashboard (all)
• Lobby: Login / Logout / Dashboard
• Status: Interfaces
• Status: OpenVPN
• System: Firmware
• VPN: OpenVPN: Client Export Utility
• XMLRPC Library (note that this privilege effectively gives the user complete access to the system via the xmlrpc feature)

Config

• URL - the full URL to the OPNsense UI (ie: https://192.168.1.1), supported format is <scheme>://<ip or host>[:<port>]
• Verify SSL Certificate - if the SSL certificate should be verified or not (if receiving an SSL error, try unchecking this)
• API Key - the API key created previously
• API Secret - the API secret of the API key
• Firewall Name - a custom name to be used for entity naming (default: use the OPNsense hostname)

Options

• Scan Interval (seconds) - scan interval to use for state polling (default: 30)
• Enable Device Tracker - turn on the device tracker integration using OPNsense ARP table (default: false)
• Device Tracker Scan Interval (seconds) - scan interval to use for ARP updates (default: 60)
• Device Tracker Consider Home (seconds) - seconds to wait until marking a device as not home after not being seen. (default: 0)
  • 0 - disabled (if device is not present during any given scan interval it is considered away)
  • > 0 - generally should be a multiple of the configured scan interval

Entities

Many entities are created by hass-opnsense for stats etc. Due to to volume of entities many are disabled by default. If something is missing be sure to review the disabled entities as it is probably there.

Binary Sensor

• CARP Status (enabled/disabled)
• System Notices present (the circle icon in the upper right of the UI)
• Firmware updates available

Device Tracker

ScannerEntity entries are created for the OPNsense ARP table. Disabled by default. Not only is the feature disabled by default but created entities are currently disabled by default as well. Search the disabled entity list for the relevant mac addresses and enable as desired.

Note that by default FreeBSD/OPNsense, uses a max age of 20 minutes for ARP entries (sysctl net.link.ether.inet.max_age). This can be lowered in OPNsense from System -> Advanced -> System Tunables if desired.

Also note that if AdGuardHome is being used, DNS queries may get throttled causing issues with the tracker. See below for details.

Sensor

• System details (name, version, temp, boottime, etc)
• pfstate details
• CPU details (usage, load, cores)
• mbuf details
• Memory details
• Filesystem usage
• Interface details (status, stats, pps, kbs (time samples are based on the Scan Interval (seconds) config option))
• Gateways details (status, delay, stddev, loss)
• CARP Interface status
• DHCP Leases
• VPN server stats and Wireguard client stats
• Certificates

Switch

All of the switches below are disabled by default.

• Filter Rules - enable/disable rules
• NAT Port Forward Rules - enable/disable rules
• NAT Outbound Rules - enable/disable rules
• Services - start/stop services (services must be enabled before they can be started)
• VPN Servers and Clients - enable/disable instances

Services

service: opnsense.close_notice
data:
  # default is to clear all notices
  # id: <some id>

service: opnsense.system_halt

service: opnsense.system_reboot

service: opnsense.start_service
data:
  service_name: "dpinger"

service: opnsense.stop_service
data:
  service_name: "dpinger"

service: opnsense.restart_service
data:
  service_name: "dpinger"
  # only_if_running: false

service: opnsense.send_wol
data:
  interface: lan
  mac: "B9:7B:A6:46:B3:8B"

service: opnsense.reload_interface
data:
  interface: wan

service: opnsense.kill_states
data:
  ip_address: 192.168.0.100
# Will optionally return the number of states dropped for each client

action: opnsense.generate_vouchers
data:
  validity: "14400"  # seconds
  expirytime: "2419200" # seconds. 0 for never
  count: 1
  vouchergroup: Home Assistant
  voucher_server: Voucher Server # Only needed if more than 1 Voucher Server
# Returns the vouchers as action response data

How to use action response data in an HA script or automation

Known Issues

AdGuardHome

As mentioned here using AdGuardHome can lead to problems with the plugin. Setting the Ratelimit in AdGuardHome to 0 will resolve this problem.