Huawei b311b-853 port mapping failed

Huawei b311b-853 port mapping fails as follows

1. First check whether the port mapping you set is correctly mapped to the server on your intranet. That is, whether the IP address of the forwarding rule you set is the IP address of your server.

2. Unable to access the intranet server, please check whether the server is turned on. You can use other computers in the LAN to access your server to confirm whether the server is turned on and can be accessed successfully.

3. Please check whether you have mapped all the ports required by the server. It is possible that the ports required to access the server are not fully set, resulting in access failure. You can check whether the port mapping is not complete by enabling "DMZ Host". If you can access the server normally after turning on the DMZ host, the port may not be added completely.