diff --git a/pages/linux/ufw.md b/pages/linux/ufw.md
index c35d33aaf..8df2a8bfa 100644
--- a/pages/linux/ufw.md
+++ b/pages/linux/ufw.md
@@ -2,6 +2,7 @@
 
 > Uncomplicated Firewall.
 > Frontend for iptables aiming to make configuration of a firewall easier.
+> More information: <https://wiki.ubuntu.com/UncomplicatedFirewall>.
 
 - Enable ufw: