From mboxrd@z Thu Jan 1 00:00:00 1970 From: Antony Stone Subject: Re: detection of the third tcp packet in a tcp connection setup Date: Thu, 27 Jun 2002 21:36:27 +0100 Sender: netfilter-admin@lists.samba.org Message-ID: <20020627203629.XEXV19225.mta07-svc.ntlworld.com@there> References: <20020627200655.VZLE19225.mta07-svc.ntlworld.com@there> <20020627203130.GC31466@cannon.eng.us.uu.net> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20020627203130.GC31466@cannon.eng.us.uu.net> Errors-To: netfilter-admin@lists.samba.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: netfilter@lists.samba.org On Thursday 27 June 2002 9:31 pm, Ramin Alidousti wrote: > On Thu, Jun 27, 2002 at 09:06:54PM +0100, Antony Stone wrote: > > On Thursday 27 June 2002 8:57 pm, Ramin Alidousti wrote: > > > If I'm not wrong you can always send data even in SYN and SYN/ACK. > > > Like Patrick said the default options in the socket interface might > > > not do it but I thought I saw some tweaking in one of Richard Steven's > > > (god bless his soul) books to push traffic in SYN packets. > > > > Is that an interesting way to get round packet filtering firewalls ? > > Why? The fw would either block the SYN (in case of DENY) or let the > SYN and any subsequent packet through... Okay. I'm having a bad evening. That's the second stupid thing I've said in this thread. I think my brain's gone awol..... I hope it's back on-line tomorrow. Antony.