I would like to be able to connect to my internal network while on Verizon’s 4G NAT’d network. It has a dynamic IP and a static IP is not an option. Suggestions on how to do so are here:
What IP showed on Cellular interface? Public or private IP? If it is public IP, you may enable PPTP on Balance 30 LTE then access internet network via PPTP connection.
If this 100.x.x.x IP is not routable from the internet, direct access isn’t possible.
The VPS server method that you’ve shared is probably an option to consider.
If it’s for gaming there’s also those VPN tools like hamachi that you can use I think.