From: Cedric Blancher <blancher@cartel-securite.fr>
To: Fabrice Triboix <Fabrice.Triboix@imgtec.com>
Cc: netfilter@lists.netfilter.org
Subject: RE: How to remove TCP options when doing NAT?
Date: Thu, 28 Jun 2007 13:32:28 +0200 [thread overview]
Message-ID: <1183030348.8967.41.camel@localhost> (raw)
In-Reply-To: <917D8AC5A524D343B28848D8BBFFEC0701B226A4@klmail1.kl.imgtec.org>
Le jeudi 28 juin 2007 à 12:00 +0100, Fabrice Triboix a écrit :
> From ethereal, I can see 20 bytes of options added on each TCP packets.
> These are TCP options that are added after the standard TCP header of 20
> bytes, thus the total TCP header size is 40 bytes.
> These 20 bytes of options are (dixit ethereal):
> - Maximum segment size: 1460 bytes (I can understand that: 1500 - 40)
> - SACK permitted
> - Timestamps: TSval 360225, TSecr 0
> - NOP
> - Window scale: 0 (multiply by 1)
What were the options that were not present _before_ the gateway ?
> Anyone knows how I can configure Linux not to do that?
I don't know of any mangling extension for TCP options, like
IPV4OPTSSTRIP for IP options.
PS: pls keep the list Cced...
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next parent reply other threads:[~2007-06-28 11:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <917D8AC5A524D343B28848D8BBFFEC0701B226A4@klmail1.kl.imgtec.org>
2007-06-28 11:32 ` Cedric Blancher [this message]
2007-06-28 13:26 ` How to remove TCP options when doing NAT? Fabrice Triboix
2007-06-27 9:51 Fabrice Triboix
2007-06-27 15:12 ` Cedric Blancher
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