From mboxrd@z Thu Jan  1 00:00:00 1970
From: Antony Stone <Antony@Soft-Solutions.co.uk>
Subject: Re: DMZ to DMT through ROUTER problem !
Date: Thu, 20 May 2004 18:34:23 +0100
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On Thursday 20 May 2004 5:32 pm, O-Zone wrote:

> On Thursday 20 May 2004 18:07, Antony Stone wrote:
> > What about the rest of rc.firewall?   You have posted your POSTROUTING
> > SNAT rules - do you have any PREROUTING DNAT rules to convert 151.8.47.B
> > into 192.168.0.3?
>
> Yes ! Here is (for SIENA only):
>
> $IPTABLES -t nat -A PREROUTING -p TCP -i $INET_IFACE -d $SIENA_IP -m
> multiport - --dports 25,53,80,110 -j DNAT --to-destinati$
> $IPTABLES -t nat -A PREROUTING -p UDP -i $INET_IFACE -d $SIENA_IP -m
> multiport - --dports 53 -j DNAT --to-destination $DMZ_SI$

Your PREROUTING DNAT rules specify the input interface (-i $INET_IFACE), 
therefore they do not apply to packets arriving on any other interface.

Change this, either by removing the -i option altogether, or by adding extra 
rules to apply to the other interrface/s on your firewall from which you want 
to allow packets to be DNATted, and things should work.

Regards,

Antony.

-- 
If the human brain were so simple that we could understand it,
we'd be so simple that we couldn't.

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