NAT proxy concepts

[Bill Moran]

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