How to see if you have a public IP address?

When you are using the Firewalla VPN Server (and also site to site VPN), it is required that you have a  public addressable IP address.   Due to the shortage of IPv4 addresses, some service providers may give you a private IP address, or you may be under double NAT. (router within another router)

What is a private IP address?  https://en.wikipedia.org/wiki/Private_network

To detect if you have a private IP address, please do this.

If you have a Blue / Blue Plus / Red:

1. log in to your router and look at the WAN or Internet Address.  Record this as Address1.

If you have a Gold/Purple in router mode

1. Tap on the Network button, tap on WAN and record the IPv4 address as Address1.

Next visit https://www.google.com/search?q=whats+my+ip&oq=whats+my+ip

Record this address as Address2

If you find Address1 and Address2 are different, then you do not have a Public IP, or you are under double NAT.

What to do next:

1.  You will need to investigate and see if you are under double NAT.   

2. If your ISP is giving you a none public IP.