From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: netfilter@vger.kernel.org
Subject: Re: Nat and firewall holes
Date: Mon, 22 Mar 2010 18:39:47 +0100 [thread overview]
Message-ID: <4BA7AB63.6090908@plouf.fr.eu.org> (raw)
In-Reply-To: <cfeab66d1003221027v65611783vf342e3038744a0f6@mail.gmail.com>
ratheesh k a écrit :
>> On Mon, Mar 22, 2010 at 10:42 PM, Pascal Hambourg <pascal.mail@plouf.fr.eu.org> wrote:
>> If a crafted packet matches all the characteristics of the conntrack
>> entry for that connection (including reply source port 80, TCP sequence
>> number), then it will be considered belonging to the reply direction of
>> that connection and the NAT will process it accordingly.
>
> i thought , only a tuple of ip and port is kept for connection
> tracking ( not tcp sequence ) .
Window and sequence number tracking has been included in TCP connection
tracking since kernel 2.6.9, making out-of-window segments INVALID.
next prev parent reply other threads:[~2010-03-22 17:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-22 15:46 Nat and firewall holes ratheesh k
2010-03-22 16:10 ` Jan Engelhardt
2010-03-22 17:12 ` Pascal Hambourg
2010-03-22 17:27 ` ratheesh k
2010-03-22 17:39 ` Pascal Hambourg [this message]
2010-03-22 17:43 ` ratheesh k
2010-03-22 19:40 ` Pascal Hambourg
2010-03-23 7:20 ` ratheesh k
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