From: "Mark Wass" <mark dot wass at gmail dot com>

> What I need is for Server#1 to connect to Server#2 but appear to be coming 
> from OPT1 on monowall#2 (192.168.22.1)

You will need some type of VPN for this.

> The good news is that I have successfully made a connection from Server#1 
> to Server#2 and made it appear to be coming from 192.168.22.1, but only 
> when using IPSEC tunnels between the correct subnets on monowall#1 and 
> monowall#2. I would like to do this without the need for IPSEC tunnels.

Then use PPtP.  That is it.  Private IP addresses are non-routable 
addresses.  The only other way would be to get a whole bunch of real IP 
addresses, and not use NAT.

                        Lee