From owner-freebsd-net  Thu Apr 11 17:52:23 2002
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Date: Thu, 11 Apr 2002 17:52:16 -0700 (PDT)
From: tang hongbin <hongbintang@yahoo.com>
Subject: Re: mpd PPTP and NAT
To: freebsd-net@FreeBSD.ORG
In-Reply-To: <200204112103.g3BL3Kj07669@arch20m.dellroad.org>
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It it true that MPD server think that all clients
behind a NAT server have the same IP address(external
address). It doesn't allow more than one client behind
a NAT server to connect with it at one time.

One solution is that NAT server supports RSIP
protocol.
for further info, please refer RFC RSIP. if there is a
RSIP daemon in NAT, that is ok.


--- Archie Cobbs <archie@dellroad.org> wrote:
> Elliott Perrin writes:
> > I was wondering if it is possible to have multiple
> systems behind a NAT
> > connect to an mpd PPTP system. If there is a
> config trick to do so, or
> > someone has figured out a way.
> > 
> > The clients are not sitting behind a BSD box, or i
> would just create a
> > PPTP tunnel between the two boxes. They are behind
> a GVC IP0006 which has
> > little documentation but according to someone
> there supports PPTP
> > Passthrough. (??)
> 
> I doubt that your NAT supports multiple clients
> behind it connecting
> to the same external PPTP server at the same time..
> the problem is
> the PPTP server (mpd) will see two TCP connections
> coming from the
> same IP address and nuke one of them.
> 
> -Archie
> 
> 

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