Date: Wed, 08 Apr 1998 21:11:12 -0700 From: Arve Ronning <arve.ronning@ah.telia.no> To: freebsd-isdn@FreeBSD.ORG Subject: [Fwd: Re: I4B & NAT] Message-ID: <352C4A60.70A1@ah.telia.no>
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Sorry, forgot to CC: the list :(
-Arve
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Message-ID: <352C39D0.2EEC@ah.telia.no>
Date: Wed, 08 Apr 1998 20:00:32 -0700
From: Arve Ronning <arve.ronning@ah.telia.no>
X-Mailer: Mozilla 3.03 (Win16; I)
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To: Poul-Henning Kamp <phk@critter.freebsd.dk>
Subject: Re: I4B & NAT
References: <3323.892053564@critter.freebsd.dk>
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Poul-Henning Kamp wrote:
>
> >Also, ping and nslookup fails from any other internal host.
> >
> >So: why doesn't this work ?
> >(I know, it's probably a screw-up caused by my ignorance:).
> >Any help would be appreciated.
> >
> >Any clues in the logs below ?
>
> Did you remember to turn on ip forwarding in /etc/{rc.conf|sysconfig} ?
>
Yes (or so I believe:), with the /etc/rc.conf line
gateway_enable="YES"
I believe that packets _are_ being forwarded from the local host
'Internal' to the ISP because natd says (from the original post):
Out [ICMP] 172.16.3.40 -> 10.0.0.1 aliased to
0.0.0.0 -> 10.0.0.1
In [ICMP] 10.0.0.1 -> 192.193.194.240 aliased to
10.0.0.1 -> 192.193.194.240
where 'Internal' is 172.16.3.40; isppp0 on 'Gate' (my FreeBSD
router/gateway box) is 192.193.194.240, and 10.0.0.1 is the ISP's
host which I'm trying to ping. So I believe the exchange should be
Out [ICMP] 172.16.3.40 -> 10.0.0.1 aliased to
0.0.0.0 -> 10.0.0.1
In [ICMP] 10.0.0.1 -> 192.193.194.240 aliased to
10.0.0.1 -> 172.16.3.40
-----------
Does this sound correct ?
BTW, /etc/rc.conf also contains
router_enable="NO"
could that be my problem ?
Regards.
-Arve
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