diff --git a/_posts/2015-06-12-ufw.md b/_posts/2015-06-12-ufw.md
index a40abb2..1466c6c 100644
--- a/_posts/2015-06-12-ufw.md
+++ b/_posts/2015-06-12-ufw.md
@@ -26,7 +26,7 @@ ufw reject 113
 ufw allow from 172.16.0.0/16 to any port 631
 ufw allow from 172.16.0.0/16 to any port 5353
 ufw allow from 172.16.0.0/16 to any port 9091
-ufw allow 17500/tcp
+ufw allow from 172.16.0.0/16 to any port 17500 proto tcp
 ufw allow 60000:61000/udp
 ```