From mboxrd@z Thu Jan  1 00:00:00 1970
From: Evan Harper <elh1@sympatico.ca>
Subject: Re: Can't get port forwarding DNAT to work
Date: Fri, 12 Dec 2003 12:50:16 -0500
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References: <3FD3D084.7060206@sympatico.ca> <200312111329.57484.Alistair Tonner <>>
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To: Alistair@mail.nerdnet.ca, netfilter@lists.netfilter.org


>>iptables -t nat -A PREROUTING -i ppp0 -p tcp --dport 25 -j DNAT --to
>>192.168.0.4:25
>># forward smtp traffic to mail server
>>    
>>
>
>	Now you've changed the destination of the packets.  Have you allowed the 
>packets to get to the destination.   You need an equivalent rule in FORWARD 
>to  let those DNATTED packets IN. ...
>  
>
Indeed, this was my problem, which I figured out after I sent this 
message. Personally I think section 4.2 of the NAT HOWTO ought to 
mention this, since it seems to imply you need only the one rule.

Evan Harper