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authentik/website/integrations/services/opnsense/index.md

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---
title: OPNsense
---
## What is OPNsense
From https://opnsense.org/
:::note
OPNsense is a free and Open-Source FreeBSD-based firewall and routing software. It is licensed under an Open Source Initiative approved license.
:::
:::note
This is based on authentik 2021.10.3 and OPNsense 21.7.4-amd64 installed using https://docs.opnsense.org/manual/install.html. Instructions may differ between versions.
:::
## Preparation
The following placeholders will be used:
- `authentik.company` is the FQDN of authentik.
- `opnsense-user` is the name of the authentik Service account we'll create.
- `DC=ldap,DC=goauthentik,DC=io` is the Base DN of the LDAP Provider (default)
### Step 1
In authentik, create a service account (under _Identity & Cryptography/Users_) for OPNsense to use as the LDAP Binder.
In this example, we'll use `opnsense-user` as the Service account's username
:::note
Take note of the password for this user as you'll need to give it to OPNsense in _Step 4_.
:::
### Step 2
In authentik, create an _LDAP Provider_ (under _Resources/Providers_) with these settings:
:::note
Only settings that have been modified from default have been listed.
:::
**Protocol Settings**
- Name: LDAP
- Certificate: authentik Self-signed certificate
### Step 3
In authentik, create an application (under _Resources/Applications_) which uses this provider. Optionally apply access restrictions to the application using policy bindings.
:::note
Only settings that have been modified from default have been listed.
:::
- Name: LDAP
- Slug: ldap
- Provider: LDAP
### Step 4
In authentik, create an outpost (under _Outposts/Outposts_) of type `LDAP` that uses the LDAP Application you created in _Step 2_.
:::note
Only settings that have been modified from default have been listed.
:::
- Name: LDAP
- Type: LDAP
### Step 5
Add your authentik LDAP server to OPNsense by going to your OPNsense Web UI and clicking the `+` under _System/Access/Servers_.
Change the following fields
- Descriptive name: authentik
- Hostname or IP address: authentik.company
- Transport: SSL - Encrypted
- Bind credentials
- User DN: CN=opnsense-user,OU=users,DC=ldap,DC=goauthentik,DC=io
- Password: whatever-you-set
- Base DN: DC=ldap,DC=goauthentik,DC=io
- Authentication containers: OU=users,DC=ldap,DC=goauthentik,DC=io;OU=groups,DC=ldap,DC=goauthentik,DC=io
- Extended Query: &(objectClass=user)
![](./opnsense1.png)
### Step 6
In OPNsense, go to _System/Settings/Administration_ and under _Authentication_ at the bottom of that page, add `authentik` to the Server list
![](./opnsense2.png)
## Notes
:::note
Secure LDAP more by creating a group for your `DN Bind` users and restricting the `Search group` of the LDAP Provider to them.
:::