I'm not 100% certain, but I think just changing the subnet and the default route are 
required in your situation.  After that you're OK.  No IP Passthrouhg is needed.  Just 
make outbound mappings, tunnels and ext aliases.  The private ip's can be put on the 
psn and routed through the GB.  OR you can get really fancy and assign a private ip 
alias to the pro interface and have both be on the same net.  I have never done this 
but I don't see why it wouldn't work.  The downside would be adding the private ip 
subnet to each machines routing table manually.  Hope this helps.

Jason S. Antonacci
Computer Support Specialist IV
Univ. of Georgia - Savannah River Ecology Lab
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Ok I am trying to put gnatbox in an existing public IP network where
renumbering is not an option.  I will use some private IPs just for an
example, however, all the real IPs are public.  I am wondering if this
is possible.

Let's say ISP has routed me 192.168.100.0/24

My router is 192.168.100.1/24
I want to put gnatbox in between my current servers which are on that
same subnet.

So EXT IF on gnatbox I assume could be 192.168.100.2/30
(this would allow it to talk to the router on .1)

Now what would need to be entered on the PRO IF for an IP assuming all
the servers reside on the /24

Also, I assume you would have to use IP Passthrough?? What would you
enter in that part of the setup?
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