diff --git a/ownphotos/settings.py b/ownphotos/settings.py
index 3449af1..f1a6be7 100644
--- a/ownphotos/settings.py
+++ b/ownphotos/settings.py
@@ -11,6 +11,7 @@
 """
 import datetime
 import os
+import ldap, tzlocal
 
 for envvar in (
     "SECRET_KEY",
@@ -77,7 +78,7 @@
     "IMAGE_DIRS": ("/data", "Image dirs list (serialized json)", str),
 }
 
-INTERNAL_IPS = ("127.0.0.1", "localhost", "192.168.1.100")
+INTERNAL_IPS = ("127.0.0.1", "localhost")
 
 CORS_ALLOW_HEADERS = (
     "cache-control",
@@ -94,7 +95,11 @@
     "x-requested-with",
 )
 
-CORS_ORIGIN_WHITELIST = ("http://localhost:3000", "http://192.168.1.100:3000")
+BACKEND_PORT=os.environ['httpPort']
+
+CORS_ORIGIN_WHITELIST = [
+    'http://localhost:' + BACKEND_PORT,
+]
 
 REST_FRAMEWORK = {
     "DEFAULT_PERMISSION_CLASSES": ("rest_framework.permissions.IsAuthenticated",),
@@ -219,7 +224,7 @@
 
 LANGUAGE_CODE = "en-us"
 
-TIME_ZONE = os.environ["TIME_ZONE"]
+TIME_ZONE = tzlocal.get_localzone().zone
 
 USE_I18N = True
 
@@ -258,8 +263,8 @@
 CORS_ORIGIN_ALLOW_ALL = False
 CORS_ALLOW_CREDENTIALS = True
 
-IMAGE_SIMILARITY_SERVER = "http://localhost:8002"
-
+IMAGE_SIMILARITY_SERVER_PORT=os.environ['IMAGE_SIMILARITY_SERVER_PORT']
+IMAGE_SIMILARITY_SERVER = 'http://localhost:' + IMAGE_SIMILARITY_SERVER_PORT
 
 # Must be less or egal of nb core CPU ( Nearly 2GB per process)
 HEAVYWEIGHT_PROCESS_ENV = os.environ.get("HEAVYWEIGHT_PROCESS", "1")
@@ -282,3 +287,12 @@
         },
     },
 }
+
+AUTHENTICATION_BACKENDS = [
+    "django_auth_ldap.backend.LDAPBackend",
+    "django.contrib.auth.backends.ModelBackend",
+]
+
+AUTH_LDAP_USER_DN_TEMPLATE = "uid=%(user)s,ou=users,dc=yunohost,dc=org"
+
+AUTH_LDAP_USER_ATTR_MAP = {"username": "uid", "first_name": "givenName", "email": "mail", "last_name": "sn"}