From: Antony Stone <Antony@Soft-Solutions.co.uk>
To: netfilter@lists.netfilter.org
Subject: Re: Checksumming Issues
Date: Fri, 21 Nov 2003 21:13:44 +0000 [thread overview]
Message-ID: <200311212113.hALLDlj29642@agate.rockstone.co.uk> (raw)
In-Reply-To: <D8FBABA1EF6F2E4DBCC88903F60691F3021BD935@houxchsvr.ucscorp.ucs.pvt>
On Friday 21 November 2003 9:00 pm, Hildebrand, Brian wrote:
> www.netfor2.com/tcpsum.htm
>
> That is the first website I found. I'm sure if you look some more you could
> probably find about 500 more. If you do not follow those instructions, you
> will get bad checksum returns. Just because it is an OSI layer higher does
> not mean it can't include data from lower down the chain.
You are right. The TCP checksum contains a "notional IP header" which is
included in the calculation.
Today is not a good day for me :( It must be somebody else's birthday.
Antony.
--
I love deadlines. I love the whooshing noise they make as they go by.
- Douglas Noel Adams
Please reply to the list;
please don't CC me.
next prev parent reply other threads:[~2003-11-21 21:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-21 21:00 Checksumming Issues Hildebrand, Brian
2003-11-21 21:13 ` Antony Stone [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-11-21 21:31 Hildebrand, Brian
2003-11-21 20:42 Hildebrand, Brian
2003-11-21 20:47 ` Antony Stone
2003-11-21 20:56 ` Leonid Veytser
2003-11-11 22:55 NF_QUEUE target and ip_queue.c Leonid Veytser
2003-11-21 20:15 ` Checksumming Issues Leonid Veytser
2003-11-21 20:27 ` Antony Stone
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