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authentik/website/integrations/services/opnsense/index.md
Jens Langhammer 8a1dd521e1 website: move integrations to separate folder, separate sidebar and new URL, add URL redirect 
Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
2021-11-22 11:10:26 +01:00

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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=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)

Step 6

In OPNsense, go to System/Settings/Administration and under Authentication at the bottom of that page, add authentik to the Server list

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. :::