Hi, friend!
I just reconfirmed:
In the case of port forwarding, you can understand that the ONT is a service relay station. If the service fails to be accessed, the following situations may occur:
1. The service of the external port that you are forwarding is not enabled (the accessed service is not enabled).
2. Your firewall filters externally forwarded services.
Therefore, you need to check whether external services are enabled and whether the firewall filters external ports.
If multiple forwarding rules exist, the external ports must be different. Otherwise, service conflicts may occur.