@woozle I have checked your suggestion. I can connect to the AX90 router from the ISP router through it's local address, and I can confirm that the ISP router has a public ip4 address, and also a...

I need help setting up My VPN Server. I Have a router supplied by my ISP. My TP-Link router connects to that router and my home network branches off of it. I have set up my dynamic dns on the outer...