diff --git a/src/Controller/Config/MachineController.php b/src/Controller/Config/MachineController.php
index 425dc3f..ed3445e 100644
--- a/src/Controller/Config/MachineController.php
+++ b/src/Controller/Config/MachineController.php
@@ -11,12 +11,17 @@ use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Security\Http\Attribute\IsGranted;
 
 /**
  * Controller for the configuration pages of machines
  */
 #[Route('/Config/Machine')]
+#[IsGranted('IS_AUTHENTICATED')]
 class MachineController extends AbstractController {
+    /**
+     * @var EntityManagerInterface The entity manager
+     */
     private readonly EntityManagerInterface $entityManager;
     /**
      * @var MachineRepository The machine repository
diff --git a/src/Controller/Config/MaterialController.php b/src/Controller/Config/MaterialController.php
index c79f9b9..7e3d440 100644
--- a/src/Controller/Config/MaterialController.php
+++ b/src/Controller/Config/MaterialController.php
@@ -14,12 +14,17 @@ use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Security\Http\Attribute\IsGranted;
 
 /**
  * Controller for the configuration pages of material
  */
 #[Route('/Config/Material')]
+#[IsGranted('IS_AUTHENTICATED')]
 class MaterialController extends AbstractController {
+    /**
+     * @var EntityManagerInterface The entity manager
+     */
     private readonly EntityManagerInterface $entityManager;
     /**
      * @var MaterialRepository The material repository
diff --git a/src/Controller/Config/MaterialTypeController.php b/src/Controller/Config/MaterialTypeController.php
index 085e89c..ffa0af3 100644
--- a/src/Controller/Config/MaterialTypeController.php
+++ b/src/Controller/Config/MaterialTypeController.php
@@ -11,12 +11,17 @@ use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Security\Http\Attribute\IsGranted;
 
 /**
  * Controller for the configuration pages of material types
  */
 #[Route('/Config/MaterialType')]
+#[IsGranted('IS_AUTHENTICATED')]
 class MaterialTypeController extends AbstractController {
+    /**
+     * @var EntityManagerInterface The entity manager
+     */
     private readonly EntityManagerInterface $entityManager;
     /**
      * @var MaterialTypeRepository The material type repository