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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20030905070458.GA31348@koala7 \
--to=ju@isf.rwth-aachen.de \
--cc=netfilter@lists.netfilter.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.