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From: Phil Oester <kernel@linuxace.com>
To: Igor S <nat4592@scarlet.be>
Cc: netfilter@vger.kernel.org
Subject: Re: SNAT range does not use unique IP
Date: Thu, 12 Dec 2013 14:34:44 -0800	[thread overview]
Message-ID: <20131212223443.GA2211@home> (raw)
In-Reply-To: <e7ab2e194832d5b3253cf7d6cdde9f63@scarlet.be>

On Thu, Dec 12, 2013 at 10:55:53PM +0100, Igor S wrote:
> Dear netfilter guru's
> 
> I am trying to build a kind of a dynamic 1:1 SNAT gateway that is
> supposed to build every incoming IP to a unique internal IP in the
> internal network without any port mangling.

Then you should be using the NETMAP target.

   NETMAP (IPv4-specific)
       This target allows you to statically map a whole network of addresses onto another network of addresses.   It  can
       only be used from rules in the nat table.

       --to address[/mask]
              Network  address to map to.  The resulting address will be constructed in the following way: All 'one' bits
              in the mask are filled in from the new `address'.  All bits that are zero in the mask are  filled  in  from
              the original address.


Phil

  reply	other threads:[~2013-12-12 22:34 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-12 21:55 SNAT range does not use unique IP Igor S
2013-12-12 22:34 ` Phil Oester [this message]
2013-12-13 14:34   ` Igor S
2013-12-13 17:21     ` Phil Oester
2013-12-16  8:17       ` Igor S
2013-12-16  9:23         ` Pascal Hambourg
2013-12-17 11:05           ` Igor S
2013-12-17 11:07           ` Igor S

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