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Date:      Tue, 15 Apr 2003 09:27:32 -0400
From:      Bill Moran <wmoran@potentialtech.com>
To:        vizion communication <vizion@ixpres.com>
Cc:        FreeBSD Stable <freebsd-stable@FreeBSD.ORG>
Subject:   Re: NAT proxy concepts
Message-ID:  <3E9C08C4.5040702@potentialtech.com>
In-Reply-To: <00e101c302fb$5f8b5700$15b55042@vizion2000.net>
References:  <00e101c302fb$5f8b5700$15b55042@vizion2000.net>

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vizion communication wrote:
> I have been taking a close look at some networking
> opportunities which are being frustrated by the limits which
> are imposed by NAT. In particular the constraints impose by
> the embargo on double NATing have an impact for a project I
> am working on. Has anyone ever seen anything which I would
> conceptually describe as a reverse NAT proxy?

See the -redirect_port option in the man page for natd ... is
that what you're referring to?

> What I want to be able to do is to be able to create a
> heirarchical  tier of networks each one of which
> communicates to the network above by using a modification of
> NAT  enjoying the capability of identifying a subnet number
> and client.

If you're using a "cascading gateway" layout, then nat isn't
really required ... except on the gateway that actually connects
to the Internet.  This is a fairly common configuration.

> Does ayone know enough about this subject to point me in the
> right
> direction (which may be - forget about it there is no way it
> can be done..:-)

Don't see any reason why it can't be done ... if I'm understanding
your correctly.

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com



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