4G CGNAT is frustrating

[Johan Gustavsson]

I have a difficult problem with getting access to my 4G connected network remotely. Lets call that point A. My Point A computer is connected to a 4G network that has CGNAT from the ISP. That means the public external IP address of that computer is shared with others and is given an internal ISP from within the ISP.

This creates alot of problems as it is not possible to run services like VPN server RDM etc as I have 0 control over the ISP NAT. I have contacted the ISP and they are not able to give a static unique IPv4 nor IPv6.

Then we have point B. I need point B to be able to use the external IP of point A.

I don't want to use VNC because restricting data on 4G is crucial. I only want to be able to visit web servers with the external IP of point A on my point B computer.

I have full access to point B NAT/Router and it has a static IP.

Bottom line is I need to be able to use point A external IP on point B because the websites I visit are restricted to the external IP of the point A 4G ISP.

 

[ylin0811]

there is an option called internet connection sharing in windows that allows you to share your primary internet connection. since your 4g goes over the wifi, you can enable the ics in between the wifi and ethernet interface on computer a, and connect the ethernet interface to your router's wan interface. this will create a triple nat, but it will work.