diff --git a/content/self-host/synology/_index.en.md b/content/self-host/synology/_index.en.md
index 4d557b7..fa02ff7 100644
--- a/content/self-host/synology/_index.en.md
+++ b/content/self-host/synology/_index.en.md
@@ -43,7 +43,7 @@ Click on above "Advanced Settings".
 {{% notice note %}}
 Synology's OS is Debian based, so host net (--net=host) works fine, we do not need to map ports with `-p` option.
 
-`192.168.16.98` is an internal IP used here for demonstration only, please set it to a public IP when you deploy and don't forget to open ports on your router!
+`192.168.16.98` is an internal IP used here for demonstration only, please set it to a public IP when you deploy (or you can use your DDNS address if you have configured one in Control Panel - Connectivity - DDNS) and don't forget to open ports on your router and your synology firewall if this is enabled (Control Panel - Connectivity - Firewall)!
 
 {{% /notice %}}