diff --git a/breccia_mapper/settings.py b/breccia_mapper/settings.py
index 5706267..a8c06c4 100644
--- a/breccia_mapper/settings.py
+++ b/breccia_mapper/settings.py
@@ -134,6 +134,16 @@ DBBACKUP_STORAGE_OPTIONS = {
 }
 
 
+# Django REST Framework
+# https://www.django-rest-framework.org/
+
+REST_FRAMEWORK = {
+    'DEFAULT_PERMISSION_CLASSES': [
+        'rest_framework.permissions.IsAuthenticated',
+    ],
+}
+
+
 # Password validation
 # https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
 
diff --git a/people/views.py b/people/views.py
index 1484a77..40bdc51 100644
--- a/people/views.py
+++ b/people/views.py
@@ -2,6 +2,7 @@
 Views for displaying or manipulating models in the 'people' app.
 """
 
+from django.contrib.auth.mixins import LoginRequiredMixin
 from django.http import HttpResponseRedirect
 from django.urls import reverse
 from django.views.generic import CreateView, DetailView, ListView, TemplateView, UpdateView
@@ -206,7 +207,7 @@ class RelationshipApiView(APIView):
         return Response(serializer.data)
     
     
-class NetworkView(TemplateView):
+class NetworkView(LoginRequiredMixin, TemplateView):
     """
     View to display relationship network.
     """