From: Jose Luis Domingo Lopez <lartc@24x7linux.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] iptable for multiple ip address
Date: Thu, 12 Sep 2002 19:49:14 +0000 [thread overview]
Message-ID: <marc-lartc-103186025127166@msgid-missing> (raw)
In-Reply-To: <marc-lartc-103183780131074@msgid-missing>
On Thursday, 12 September 2002, at 16:54:03 +0200,
Juan Antonio Morillas Cerezo wrote:
> Yes, with iptables you can have more than one IP
> address for each physical interface, both in "local" and
> "external" places, then you have to add them as aliases with
> ip, and do some NAT to connect each side, if there are private
> IPs involved.
>
I would add the following. If what the original poster wants is to
somehow give a LAN with private IP addressing access to the Internet
using not a simple public IP address, but a pool of them, you easily
can. Just create an iptables rule with a SNAT target like this:
iptables -t nat -A POSTROUTING --out-interface $WAN_IF \
--jump SNAT --to-source $START_PUB_IP-$END_PUB_IP
The only limitation I see with this approach is that IP addresses must
be contiguous, but I think this is a typical scenario, because our ISP
tend to give addresses in blocks :)
Hope this helps.
--
Jose Luis Domingo Lopez
Linux Registered User #189436 Debian Linux Woody (Linux 2.4.19-pre6aa1)
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next prev parent reply other threads:[~2002-09-12 19:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-12 13:35 [LARTC] iptable for multiple ip address James Ma
2002-09-12 14:54 ` Juan Antonio Morillas Cerezo
2002-09-12 19:49 ` Jose Luis Domingo Lopez [this message]
2002-09-14 12:14 ` Eric Leblond
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