BGW210-700 IP Passthrough and Default Server mode not working as expected
I put my BGW210-700 in IP Passthrough mode with a TP-Link AX3000 router behind it. I disabled Wi-Fi and Firewall Advanced settings. I also disabled the Packet Filter settings. The AX3000 is the only client for the ATT box. The setup works fine except for one thing that doesn't.
I still need to do port forwarding on the ATT box for Remote Desktop (TCP/UDP: 3389) then again port forwarding on the AX3000 router to reach the computer I want.
I tried changing to Default Server instead of IP Passthrough but no change. I cannot reach the computer from WAN without port forwarding on the ATT box.
Why is not working?