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From: Stephen Clark <sclark46@earthlink.net>
To: Changli Gao <xiaosuo@gmail.com>
Cc: Jan Engelhardt <jengelh@medozas.de>, netfilter-devel@vger.kernel.org
Subject: Re: clone packet with new destination address
Date: Mon, 01 Nov 2010 11:16:04 -0400	[thread overview]
Message-ID: <4CCED9B4.6070108@earthlink.net> (raw)
In-Reply-To: <AANLkTiny3XRc7-OPrUzvzp_=0wd4KJ+GAhPQEkQrSwjR@mail.gmail.com>

On 11/01/2010 11:00 AM, Changli Gao wrote:
> On Mon, Nov 1, 2010 at 10:29 PM, Stephen Clark<sclark46@earthlink.net>  wrote:
>    
>> I am not sure on how to go about doing that, looking at the code for TEE it
>> looks
>> like the cloned packet bypasses any of the remaining iptables chains.
>>      
> It isn't true. The cloned packet only bypasses the iptables rule where
> it is generated.
>
>    
>> So
>> where
>> would I change the destination address? Also if I am mistaken and it does
>> hit
>> one of the remaining iptables chains how do I tell it is not the original
>> but the
>> cloned packet I want to change to the new destination address?
>>
>>      
> I think you can use the RAWSNAT xtables-addon to change the
> destination address. Since the new skb is attached to untracked ct,
> you can use match conntrack --ctstate UNTRACKED to filter it out.
>
>    
Hi Changli,

Thank you very much for the reply, But wouldn't it be RAWDNAT since  I 
want to
change the destination address?

Steve

-- 

"They that give up essential liberty to obtain temporary safety,
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty
decreases."  (Thomas Jefferson)




  parent reply	other threads:[~2010-11-01 15:24 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-22 12:31 clone packet with new destination address Stephen Clark
2010-10-22 13:24 ` Changli Gao
2010-10-22 13:36   ` Changli Gao
2010-10-22 14:16     ` Stephen Clark
2010-11-01 12:46     ` Stephen Clark
2010-11-01 13:09       ` Jan Engelhardt
2010-11-01 14:29         ` Stephen Clark
2010-11-01 15:00           ` Changli Gao
2010-11-01 15:02             ` Changli Gao
2010-11-01 15:16             ` Stephen Clark [this message]
2010-11-01 19:37             ` Jan Engelhardt
2010-11-01 19:29           ` Jan Engelhardt
2010-11-02 13:44             ` Stephen Clark
2010-11-02 13:46               ` Jan Engelhardt
2010-11-02 13:53                 ` Stephen Clark
2010-11-02 22:35               ` Changli Gao

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