diff --git a/deploy/nginx/nginx.conf b/deploy/nginx/nginx.conf
index b0a36acc41..dad9f5d79c 100644
--- a/deploy/nginx/nginx.conf
+++ b/deploy/nginx/nginx.conf
@@ -123,8 +123,8 @@ http {
                         # Allow localhost and internal Docker network
                         allow 127.0.0.1;
 
-                        # Allow requests from the internal Docker network (e.g., 172.18.0.0/16)
-                        allow 172.18.0.0/16;
+                        # Allow requests from the entire 172.0.0.0/8 range
+                        allow 172.0.0.0/8;
 
                         # Deny all other requests
                         deny all;
diff --git a/docker-compose.yml b/docker-compose.yml
index 22a10c30ef..7b6ed2e764 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -246,4 +246,4 @@ networks:
     driver: bridge
     ipam:
       config:
-        - subnet: 172.18.0.0/16
+        - subnet: "${NETWORK_SUBNET:-172.21.1.0/24}"
diff --git a/env.example b/env.example
index c21d764e99..afe8a17bfd 100644
--- a/env.example
+++ b/env.example
@@ -31,4 +31,6 @@ MAIN_LANGUAGE=en
 SYSTEM_ADMIN_PASSWORD=password
 WEBSITE_TITLE=Your Website Title
 TLS_CERTIFICATE_FILE=/etc/apache2/ssl/localhost.crt
-TLS_CERTIFICATE_KEY=/etc/apache2/ssl/localhost.key
\ No newline at end of file
+TLS_CERTIFICATE_KEY=/etc/apache2/ssl/localhost.key
+
+NETWORK_SUBNET=172.21.1.0/24
\ No newline at end of file