[44net] one-to-one translation of IP addresses?

How does everyone handle servers that they have accessible via net 44? (As well as their local network)

I typically use the 192.168.1.X private IP range on my home network.

A couple IPs on that network are servers (askerisk, samba etc). I don't really want to change my internal network configuration. So I was thinking some sort of one-to-one translation of IP addresses.

I have tried everything I have read thus far with no luck.

Lets say: server: 192.168.1.20 that I'd like translated to 44.92.21.35