netdev - Re: Passive OS fingerprint xtables match.

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Message-ID: <20090213124946.GB23879@ioremap.net>
Date:	Fri, 13 Feb 2009 15:49:46 +0300
From:	Evgeniy Polyakov <zbr@...emap.net>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Netfilter Development Mailinglist 
	<netfilter-devel@...r.kernel.org>
Subject: Re: Passive OS fingerprint xtables match.

Hi Patrick.

On Mon, Feb 09, 2009 at 05:09:21PM +0100, Patrick McHardy (kaber@...sh.net) wrote:
> Sorry for ignoring this for so long. I really don't have much of an
> opinion on this except for what I said before:
> 
> - I would prefer a mechanism built on u32 if possible

u32 actually can not be used here, since it is not possible to implement
a state machine to match different wildcards for MSS for example. Like
modulus operation.

-- 
	Evgeniy Polyakov
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