diff --git a/group_vars/all.yaml.example b/group_vars/all.yaml.example
index 8068507..a3abcf2 100644
--- a/group_vars/all.yaml.example
+++ b/group_vars/all.yaml.example
@@ -3,3 +3,5 @@
 ext_gateway: ""
 # Put here the public key of the users CA.
 user_ca_key: ""
+# Put here the public ip for your organisation
+public_ip: 0.0.0.0
diff --git a/roles/reverse_proxy/templates/http.j2 b/roles/reverse_proxy/templates/http.j2
index 58f93a4..3ed5cb6 100644
--- a/roles/reverse_proxy/templates/http.j2
+++ b/roles/reverse_proxy/templates/http.j2
@@ -1,5 +1,5 @@
 server {
-    listen 80;
+    listen {{ public_ip }}:80;
 
     server_name {{ hostname }}.lilik.it www.{{ hostname }}.lilik.it;