diff --git a/Set-up-http-proxy-server.md b/Set-up-http-proxy-server.md
index 64595a6..60d7fe9 100644
--- a/Set-up-http-proxy-server.md
+++ b/Set-up-http-proxy-server.md
@@ -99,6 +99,8 @@ Here you can ask `chatgpt` if you see some error.
 
 https://rustdesk.com/docs/en/self-host/client-configuration/advanced-settings/#proxy-url
 
+For more security options, please check https://github.com/rustdesk/rustdesk-server-pro/discussions/620
+
 # Https proxy server
 
 The `http` proxy allows connections to HTTPS endpoints.