diff --git a/symfony/security-bundle/3.3/config/packages/security.yaml b/symfony/security-bundle/3.3/config/packages/security.yaml
index fb4c593e..4c496fb2 100644
--- a/symfony/security-bundle/3.3/config/packages/security.yaml
+++ b/symfony/security-bundle/3.3/config/packages/security.yaml
@@ -10,12 +10,10 @@ security:
             anonymous: true
 
             # activate different ways to authenticate
+            # https://symfony.com/doc/current/security.html#firewalls-authentication
 
-            # http_basic: true
-            # https://symfony.com/doc/current/security.html#a-configuring-how-your-users-will-authenticate
-
-            # form_login: true
-            # https://symfony.com/doc/current/security/form_login_setup.html
+            # https://symfony.com/doc/current/security/impersonating_user.html
+            # switch_user: true
 
     # Easy way to control access for large sections of your site
     # Note: Only the *first* access control that matches will be used