1. The administrator enters the Xiaomi routing management interface; Log in to the router, then you can find "Security Settings", then you can find "IP address filtering", and then you can set the LAN IP address, prohibited ports and protocols.

2. Find the location corresponding to the port, map it, and close the corresponding port.

3. The Xiaomi router uses port 445 internally, so remember to query the service port before modifying it, then map the port, and then close the Xiaomi router.