From: "Josan Kadett" <corporate@superonline.com>
To: "'Brad Campbell'" <brad@wasp.net.au>
Cc: <linux-kernel@vger.kernel.org>
Subject: RE: Entirely ignoring TCP and UDP checksum in kernel level
Date: Sun, 22 Aug 2004 09:24:47 +0200 [thread overview]
Message-ID: <S266258AbUHVGYp/20040822062445Z+1742@vger.kernel.org> (raw)
In-Reply-To: <41283A74.101@wasp.net.au>
**Indeed there is no longer such a need to recalculate the IP checksum
because I have found a way to disable it by patching the kernel. So, only
requirement is this;
Change the source address of the packet before it reaches to the socket
buffer aka skbuff.h. Because if it reaches that code with the wrong IP
header, the csum will just drop it away.
-----Original Message-----
From: linux-kernel-owner@vger.kernel.org
[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Brad Campbell
Sent: Sunday, August 22, 2004 8:17 AM
To: Josan Kadett
Cc: linux-kernel@vger.kernel.org
Subject: Re: Entirely ignoring TCP and UDP checksum in kernel level
So if we took any packet that came in from 192.168.1.1 and substituted
192.178.77.1 for the Source
address and then re-calculated the IP checksum you would be up and running?
Regards,
Brad
next prev parent reply other threads:[~2004-08-22 6:24 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-22 6:17 Brad Campbell
2004-08-22 7:18 ` Josan Kadett
2004-08-22 7:24 ` Josan Kadett [this message]
2004-08-22 7:04 ` Brad Campbell
2004-08-22 8:12 ` Josan Kadett
2004-08-22 8:29 ` Brad Campbell
[not found] <41285DB3.6070605@wasp.net.au>
2004-08-22 10:14 ` Josan Kadett
2004-08-22 11:48 ` James Courtier-Dutton
2004-08-22 10:25 ` Josan Kadett
2004-08-22 9:36 ` Brad Campbell
2004-08-22 10:48 ` Josan Kadett
2004-08-22 13:10 ` Brad Campbell
2004-08-22 13:13 ` Brad Campbell
2004-08-22 19:27 ` Josan Kadett
2004-08-22 20:28 ` Josan Kadett
2004-08-23 3:38 ` David Meybohm
2004-08-23 5:26 ` Josan Kadett
2004-08-23 8:40 ` Josan Kadett
-- strict thread matches above, loose matches on Subject: below --
2004-08-22 9:19 Brad Campbell
[not found] <04Aug21.205911edt.41960@gpu.utcc.utoronto.ca>
2004-08-22 2:08 ` Josan Kadett
2004-08-22 6:01 ` Brad Campbell
2004-08-22 7:06 ` Josan Kadett
[not found] <1093120934.854.155.camel@krustophenia.net>
2004-08-21 20:46 ` Lee Revell
2004-08-21 21:53 ` Josan Kadett
[not found] <4126FDD8.1090101@gmc.lt>
2004-08-21 9:00 ` Josan Kadett
2004-08-21 8:11 ` Denis Vlasenko
2004-08-21 9:18 ` Josan Kadett
2004-08-21 8:26 ` Lee Revell
2004-08-21 9:35 ` Josan Kadett
2004-08-21 9:14 ` Vojtech Pavlik
[not found] <1093078213.854.76.camel@krustophenia.net>
2004-08-21 8:58 ` Lee Revell
2004-08-21 21:41 ` Josan Kadett
2004-08-21 8:27 Denis Vlasenko
2004-08-21 8:41 ` Lee Revell
2004-08-21 9:50 ` Josan Kadett
2004-08-21 9:06 ` Kalin KOZHUHAROV
2004-08-21 21:46 ` Josan Kadett
2004-08-21 9:39 ` Josan Kadett
[not found] <4126F16D.1000507@gmc.lt>
2004-08-21 8:02 ` Josan Kadett
2004-08-21 7:36 ` Kalin KOZHUHAROV
2004-08-21 8:54 ` Josan Kadett
2004-08-21 6:15 Josan Kadett
2004-08-21 7:10 ` Willy Tarreau
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