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Date:      Wed, 2 Aug 2000 10:36:55 -0700 (PDT)
From:      Julian Elischer <julian@elischer.org>
To:        Archie Cobbs <archie@whistle.com>
Cc:        Ruslan Ermilov <ru@FreeBSD.ORG>, Charles Mott <cmott@scientech.com>, Erik Salander <erik@whistle.com>, net@FreeBSD.ORG, Brian Somers <brian@Awfulhak.org>, Eivind Eklund <perhaps@yes.no>
Subject:   Re: Improved PPTP support for libalias(3)
Message-ID:  <Pine.BSF.4.10.10008021032370.79587-100000@InterJet.elischer.org>
In-Reply-To: <200008021625.JAA81509@bubba.whistle.com>

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On Wed, 2 Aug 2000, Archie Cobbs wrote:
> 
> Sorry, I don't understand your point... libalias already does this fine,
> that's not the problem.
> 
> The problem is that two internal clients connecting to the same
> external server at the same time will result in two TCP connections
> to the same server seeming to come from the same IP address, which
> violates the protocol.


you could do this using the ipfw 'forward' keyword,
to redirect the streams from the clients to a proxy subprocess
in the natd process, which would aggregate as needed onto a separate
tcp stream it runs itself.

I'm a little confused though. PPTP isn't running over
TCP.. or are you indicating that the TCP sreams under GRE
are 'fiddled' by natd?


> -Archie
> 
> ___________________________________________________________________________
> Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com
> 



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