TP-Link Deco BE63 mesh port forwarding is not working

The checks in more detail

In the Deco app, open More, Advanced, Address Reservation, and reserve an address for the device so that it always receives the same address; a rule that points at an address that changes will break. Then create the rule. In the app, choose More, Advanced, NAT Forwarding, then Port Forwarding, and add a rule: name it, select the device, set the internal port, the external port, and choose the protocol, TCP, UDP or both, as the application requires. The external port is the one that people on the internet use, and the internal port is the one the device listens on.

Save the rule. If it still does not work, test whether the device itself is listening: the firewall on the device must allow the port, and the application must be running. Test from outside the home network, using a phone on mobile data or an online port checker, since testing from inside often fails because of how some routers handle the loop back. Check that your internet connection has a public address: if the Deco's internet address begins with 100.64 or is private,

or if your provider uses carrier-grade NAT, no forwarding will work, and you need to ask for a public address or use a service such as a relay. If the Deco sits behind another router or a modem router, you have a double NAT and must forward on both or use bridge mode on the first. A changing public address can be handled with dynamic DNS. If the rule seems right and the port still shows closed, restart the Deco and contact TP-Link with the serial number.