diff --git a/config/auth.php b/config/auth.php
index 732c35d54c..26bf8496ab 100644
--- a/config/auth.php
+++ b/config/auth.php
@@ -21,6 +21,17 @@
 
 declare(strict_types=1);
 
+// TODO die with error if LOGIN_PROVIDER = eloquent
+// because it must be changed to "users".
+// login provider no longer used?
+if (null !== env('LOGIN_PROVIDER', null)) {
+    die('The "LOGIN_PROVIDER" environment variable must be removed.');
+}
+
+// kill ADLDAP values?
+
+// AUTHENTICATION_GUARD
+
 return [
     /*
     |--------------------------------------------------------------------------
@@ -62,6 +73,10 @@ return [
             'driver'   => 'session',
             'provider' => 'users',
         ],
+        'ldap'              => [
+            'driver'   => 'session',
+            'provider' => 'ldap',
+        ],
         'remote_user_guard' => [
             'driver'   => 'remote_user_guard',
             'provider' => 'remote_user_provider',
@@ -91,13 +106,27 @@ return [
 
     'providers' => [
         'users'                => [
-            'driver' => envNonEmpty('LOGIN_PROVIDER', 'eloquent'),
+            'driver' => 'eloquent',
             'model'  => FireflyIII\User::class,
         ],
         'remote_user_provider' => [
             'driver' => 'remote_user_provider',
             'model'  => FireflyIII\User::class,
         ],
+
+        'ldap' => [
+            'driver'   => 'ldap',
+            //'model'    => LdapRecord\Models\ActiveDirectory\User::class,
+            'model'    => LdapRecord\Models\OpenLDAP\User::class,
+            'rules'    => [],
+            'database' => [
+                'model'           => FireflyIII\User::class,
+                'sync_passwords'  => false,
+                'sync_attributes' => [
+                    'email' => 'mail',
+                ],
+            ],
+        ],
     ],
 
     /*
diff --git a/config/firefly.php b/config/firefly.php
index a6eebbc793..68090c4b2e 100644
--- a/config/firefly.php
+++ b/config/firefly.php
@@ -121,9 +121,14 @@ return [
     'tracker_url'                  => env('TRACKER_URL', ''),
     'disable_frame_header'         => env('DISABLE_FRAME_HEADER', false),
     'disable_csp_header'           => env('DISABLE_CSP_HEADER', false),
+
+    // ldap and auth settings
     'login_provider'               => envNonEmpty('LOGIN_PROVIDER', 'eloquent'),
     'authentication_guard'         => envNonEmpty('AUTHENTICATION_GUARD', 'web'),
     'custom_logout_uri'            => envNonEmpty('CUSTOM_LOGOUT_URI', ''),
+    'ldap_auth_field'              => env('LDAP_AUTH_FIELD', env('ADLDAP_AUTH_FIELD', 'distinguishedname')),
+
+    // other settings
     'ipinfo_token'                 => env('IPINFO_TOKEN', ''),
     'update_endpoint'              => 'https://version.firefly-iii.org/index.json',
     'send_telemetry'               => env('SEND_TELEMETRY', false),