diff --git a/OpenVPN-server:-Firewall-configuration-(using-iptables).md b/OpenVPN-server:-Firewall-configuration-(using-iptables).md
index 074c420..7a914af 100644
--- a/OpenVPN-server:-Firewall-configuration-(using-iptables).md
+++ b/OpenVPN-server:-Firewall-configuration-(using-iptables).md
@@ -1,3 +1,5 @@
+Full article: https://github.com/pi-hole/pi-hole/wiki/Pi-hole---OpenVPN-server
+
 ### Optional: Firewall configuration (using iptables)
 If your server is visible to the world, you might want prevent port 53/80 from being accessible from the outside. You will still be able to connect to your Pi-hole from within the VPN.