@MrKarma If you have an ISP device (modem/router) that is configured to do a NAT, then try to configure it in bridge mode (if possible) - thus only C6 will NAT in your network. The other way around...

@Cxoxianuk The 403 error is probably due to the fact that you're trying to access the 192.168.2.1 WebGUI from another subnet (not from its LAN subnet). Try accessing WebGUI on 192.168.1.50...

@Cxoxianuk Yes, that's correct, AX6000 has NAT disable option implemented so it's a perfect candidate to test that. As for which router or all 3, if you provide the updated diagram I can say that for...

@Cxoxianuk Yes, that's what I've meant. For the discussion purposes posting an updated topology diagram would be helpful. There are cheep models on which NAT can be disabled, like Archer C6/A6. But...

You should be able to. It's just a wording I think. The ultimate test is to try it.

@htaj If you don't see the router login page then follow this guide to find the router IP address (while connected by wire or wireless to the router). Then open the router's IP address in a browser...