Date: Mon, 28 Sep 1998 14:36:43 +0100 From: Brian Somers <brian@Awfulhak.org> To: Harlan Stenn <Harlan.Stenn@pfcs.com> Cc: Dan Busarow <dan@dpcsys.com>, questions@FreeBSD.ORG Subject: Re: /usr/sbin/ppp and asymmetric cable modem routing Message-ID: <199809281336.OAA01969@woof.lan.awfulhak.org> In-Reply-To: Your message of "Sat, 26 Sep 1998 23:37:44 EDT." <4861.906867464@brown.pfcs.com>
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> I just had another thought - since I'm dialing the PPP connection, do I
> really need natd, or will the NAT stuff in /usr/sbin/ppp do the job for me?
>
> Will /usr/sbin/ppp notice that the "returning" packets are coming in via a
> NIC card instead of over the modem?
No.
Ppp won't see the incoming packets and therefore won't be able to do
anything with them :-I
Natd is the right way to go. I would have thought it works - what does
your setup look like ? Are you using ``ipfw ... divert ...'' on both
interfaces, diverting both to the same natd, and have you got the
same IP number assigned to both interfaces ?
The problem here as I see it is not if natd will work, but if the
machine will be able to handle things properly. I would have thought
the show-stopper would happen when the machine tried to create a
temporary route to the target machine based on the interface that an
incoming packet from that machine arrived on....
> H
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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