@pioche The port-forwarding rule should be configured in Router B (TL-WR841N) WebGUI. Here's how to do that - Case 1. If this firewall is part of your Router A - you don't have to configure any rules...

@Old_Bear The other thing that comes in my mind is that some of your devices may use a randomized MAC addresses - details. If you have only BE3600 DHCP server active on your network and you've set up...

@Old_Bear What's your BE3600 DHCP pool range ? Make sure when you set up DHCP Address Reservation the IP addresses you use are in the DHCP pool range.

@pioche "- The service is accessible from the subnetwork of Router B via the address 192.168.1.33:7000 - The "public" WAN ip address of Router B is 192.168.1.14 according to the overview admin panel....

@Brew123 Most probably this feature has not been implemented into the AX12 firmware yet.

@SKH82 Here's a video guide on how to set up your RE. Make sure you're with the latest FW release (1.0.13 Build 231115) - here.