From: Nils Juergens <ju@isf.rwth-aachen.de>
To: "'netfilter@lists.netfilter.org'" <netfilter@lists.netfilter.org>
Subject: Re: Port forward to public IP's behind firewall
Date: Fri, 05 Sep 2003 09:04:58 +0200 [thread overview]
Message-ID: <20030905070458.GA31348@koala7> (raw)
In-Reply-To: <9AD675D1C5325D4F87D79F3EB7E539F3ABE5@postmanpat.netcall.com>
On Thu, 04.09.03, Gareth Hastings <Gareth.Hastings@netcall.com> wrote:
> firewall have public addresses. Now I would like to add a port forward rule
> that sends all incoming mail to another IP address. I am not sure what I'd
> need to do. I didn't think SNAT or DNAT were needed here as no NAT is
> happening. Anyone have any ideas? Do I need to mangle the destination
> address?
If you send packets to another IP address why exactly is that not DNAT?
Try:
iptables -t nat -A PREROUTING -p tcp -d $fw_ip --dport 25 -j DNAT --to $target:25
cya,
Nils
prev parent reply other threads:[~2003-09-05 7:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-04 15:30 Port forward to public IP's behind firewall Gareth Hastings
2003-09-05 7:04 ` Nils Juergens [this message]
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