vpn vs natd

From: Ilya (mail@krel.org)
Date: 03/08/01 

From: "Ilya" <mail@krel.org>
To: <freebsd-security@freebsd.org>
Date: Wed, 7 Mar 2001 20:48:42 -0500

As far as i know there is no way to make vpn work through many-to-one nat.
Only many-tomany will work. I currently have at home one-to-many (windows
clients through freebsd router), now that i need vpn, i got a second public
ip. Is it somehow possible to setup that all truffic from certin private ip
on my lan would go out as using my new ip? which i guess will reside on same
network card, whoch hosts current public ip. is it also possible to do
without breaking the config i have now?
so i am thinking, many-to-one nat for all windows clients except one, and
many-to-many for only one specific private ip.
how can i do it?

thx a lot.

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