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From: "Martin Schiller" <mschiller@tdt.de>
To: "'Eric Dumazet'" <dada1@cosmosbay.com>
Cc: <netdev@vger.kernel.org>
Subject: RE: Suppress / delay SYN-ACK
Date: Mon, 16 Oct 2006 08:52:06 +0200	[thread overview]
Message-ID: <004001c6f0ef$97e82020$1a04010a@V505CP> (raw)
In-Reply-To: <452FF379.2080600@cosmosbay.com>

On Friday, October 13, 2006 10:14 PM, Eric Dumazet wrote:
>
> Martin, I played with libnetfilter_queue
> (http://www.netfilter.org/projects/libnetfilter_queue/index.html)
> 
> With this single iptables rules, I was able to do what you want :
> transmit the SYN message to a user application, that may DROP this
> packet or let it pass normal TCP stack.  
> 
> iptables -A INPUT -p tcp --dport 333 --syn -j QUEUE
> 
> Then hack nfqnl_test.c to meet your needs (see nfq_set_verdict(),
> nfq_get_payload())
> 
> Be prepared to receive the 'same SYN' several time if your X.25 call
> attempt is too long. 
> 
> (You have to be root unfortunatly)
> 
> Eric

Thanks, this sounds very interesting. I will have a closer look at that.

Martin



  parent reply	other threads:[~2006-10-16  6:52 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-12  8:08 Suppress / delay SYN-ACK Martin Schiller
2006-10-12  8:38 ` Eric Dumazet
2006-10-12 10:13   ` Martin Schiller
2006-10-12 10:31     ` Evgeniy Polyakov
2006-10-12 10:39       ` Eric Dumazet
2006-10-12 10:53         ` Evgeniy Polyakov
2006-10-12 10:36     ` Eric Dumazet
2006-10-12 16:13 ` Rick Jones
2006-10-12 21:58   ` Caitlin Bestler
2006-10-12 22:12     ` jamal
2006-10-12 22:54     ` Rick Jones
2006-10-13  0:57       ` Stephen Hemminger
2006-10-13  4:11       ` Eric Dumazet
2006-10-13 16:39         ` Rick Jones
2006-10-13 20:13           ` Eric Dumazet
2006-10-13 21:50             ` Rick Jones
2006-10-16  6:52             ` Martin Schiller [this message]
2006-10-13  5:41     ` Stephen J. Bevan
2006-10-13  6:28       ` Martin Schiller
2006-10-16  7:02 ` Lennert Buytenhek
2006-10-17 12:04   ` Martin Schiller
2006-10-17 12:54     ` Eric Dumazet
2006-10-18  6:23       ` Martin Schiller

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