diff --git a/FAQ.md b/FAQ.md
index 8800b1a..2bb3515 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1056,4 +1056,4 @@ There is an icon to indicate if it is encrypted, please hover mouse there, you w
 There are two ways.
 1. Set up http proxy: https://github.com/rustdesk/rustdesk/wiki/Set-up-http-proxy-server
 
-2. Build a custom client with [WebSocket allowed](https://rustdesk.com/docs/en/self-host/client-configuration/advanced-settings/#allow-websocket), you also need to set up server correctly with [WebSocket support](https://rustdesk.com/docs/en/self-host/rustdesk-server-pro/#6-set-up-websocket). If all your clients use WebSocket, you can close 21114-21119 UDP/TCP ports on firewall, only open the 443 port.
+2. Build a custom client with [WebSocket allowed](https://rustdesk.com/docs/en/self-host/client-configuration/advanced-settings/#allow-websocket), you also need to set up server correctly with [WebSocket support](https://rustdesk.com/docs/en/self-host/rustdesk-server-pro/#6-set-up-websocket). If all your clients use WebSocket, you can close 21114-21119 UDP/TCP ports on firewall of self-host server, only open the 443 port.