@Galicia86 When you ping the TP-Link domain name registered in AX55, you should see to which IP address it resolves. This IP address should be the same as the AX55 WAN IP address. If they are...

@Noam_A1 You should be able to do all of these - check this thread for your first question and this thread for your second question.

@RTouris This would work in a business grade router on which you can set its ethernet ports IP addresses to be in a different subnets. AX55 is a home grade router with an integrated ethernet switch...

@superwojciech Depending on your device model and hardware version you can block pings to WAN port for all devices only.

@rbnet It seems that there's no other way to do that - check this thread.

@kacper2007 If your C6 WAN IP address is the range between 100.64.0.0 and 100.127.255.255 then you're behind a CG-NAT - call your ISP and ask for assistance. If your C6 WAN IP address is in the...