100 lines
2.8 KiB
Markdown
100 lines
2.8 KiB
Markdown
---
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title: OPNsense
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---
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## What is OPNsense
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From https://opnsense.org/
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:::note
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OPNsense is a free and Open-Source FreeBSD-based firewall and routing software. It is licensed under an Open Source Initiative approved license.
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:::
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:::note
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This is based on authentik 2022.4.1 and OPNsense 22.1.6-amd64 installed using https://docs.opnsense.org/manual/install.html. Instructions may differ between versions.
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:::
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## Preparation
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The following placeholders will be used:
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- `authentik.company` is the FQDN of authentik.
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- `opnsense` is the name of the authentik Service account we'll create.
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- `DC=ldap,DC=goauthentik,DC=io` is the Base DN of the LDAP Provider (default)
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### Step 1
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In authentik, go and 'Create Service account' (under _Directory/Users_) for OPNsense to use as the LDAP Binder, leaving 'Create group' ticked as we'll need that group for the provider.
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In this example, we'll use `opnsense` as the Service account's username
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:::note
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Take note of the password for this user as you'll need to give it to OPNsense in _Step 4_.
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:::
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### Step 2
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In authentik, create an _LDAP Provider_ (under _Applications/Providers_) with these settings:
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:::note
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Only settings that have been modified from default have been listed.
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:::
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**Protocol Settings**
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- Name: LDAP
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- Search group: opnsense
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- Certificate: authentik Self-signed certificate
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### Step 3
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In authentik, create an application (under _Applications/Applications_) which uses this provider. Optionally apply access restrictions to the application using policy bindings.
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:::note
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Only settings that have been modified from default have been listed.
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:::
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- Name: LDAP
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- Slug: ldap
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- Provider: LDAP
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### Step 4
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In authentik, create an outpost (under _Applications/Outposts_) of type `LDAP` that uses the LDAP Application you created in _Step 2_.
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:::note
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Only settings that have been modified from default have been listed.
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:::
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- Name: LDAP
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- Type: LDAP
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### Step 5
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Add your authentik LDAP server to OPNsense by going to your OPNsense Web UI and clicking the `+` under _System/Access/Servers_.
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Change the following fields
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- Descriptive name: authentik
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- Hostname or IP address: authentik.company
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- Transport: SSL - Encrypted
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- Bind credentials
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- User DN: CN=opnsense-user,OU=users,DC=ldap,DC=goauthentik,DC=io
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- Password: whatever-you-set
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- Base DN: DC=ldap,DC=goauthentik,DC=io
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- Authentication containers: OU=users,DC=ldap,DC=goauthentik,DC=io;OU=groups,DC=ldap,DC=goauthentik,DC=io
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- Extended Query: &(objectClass=user)
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### Step 6
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In OPNsense, go to _System/Settings/Administration_ and under _Authentication_ at the bottom of that page, add `authentik` to the Server list
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## Notes
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:::note
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Secure LDAP more by creating a group for your `DN Bind` users and restricting the `Search group` of the LDAP Provider to them.
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:::
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