I am using a complicated setup with a 4G sim in a Huawei B593 router.
Connected this to an Asus RT-N66U and using that for home LAN access.
I am using a VPN service via the Asus device as it avoids a lot of EE congestion issues and it works just great.
My home LAN is not accessible through the internet however although port 80 is open.
I want to access my NAS which is possible via port 8080 but this cannot be done even if I put the NAS device in the DMZ of the Asus router VPN. I tried port forwarding 8080 also but still no joy. Any clues as to where I am going wrong?