

Maybe even a little hand drawn picture will help with real IP's (even if you make them up, if you are worried about security). those are strictly for Router to router configuration between your ISP and your router. Please don't use WAN or SERIAL IP addresses for the Public facing service. You are giving two different subnet for the internet and it is confusing. Then you can use them and open ports for inbound traffic to them and then use NAT (Network Address Translation) to allow them into your network. or a Subnet that allow multiple IP addresses to use on the internet. Typically you have an INTERNET connection and either a 30 bit subnet with only ONE useable IP address to use publically on the internet. Can you please use real IP addresses even if they are fake so we can have a clue as to what you are trying to do? Also do you have a little drawing or a better explaination of what is happening.

I think you need to provide more information.
