Who I have the same questioned this topic

As long as the modem has a reserved IP address then it is connected to Verizon’s private network and subject to their private network rules.

Basically, you have three options to work around Verizon’s restrictive private network:

1)  Call Customer Service (800) 922-0204 to setup a possible public facing static IP address.

2)  Try using a third party VPN Server such as Google Chrome Remote Desktop. 

3)  Obtain internet service from another provider that uses static IP addresses.