netdev - Re: [PATCH v3 -next 2/2] tcp: syncookies: reduce mss table to four values

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Message-Id: <20130924.104026.1557379333541367159.davem@davemloft.net>
Date:	Tue, 24 Sep 2013 10:40:26 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	fw@...len.de
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v3 -next 2/2] tcp: syncookies: reduce mss table to four
 values

From: Florian Westphal <fw@...len.de>
Date: Fri, 20 Sep 2013 22:32:56 +0200

> Halve mss table size to make blind cookie guessing more difficult.
> This is sad since the tables were already small, but there
> is little alternative except perhaps adding more precise mss information
> in the tcp timestamp.  Timestamps are unfortunately not ubiquitous.
> 
> Guessing all possible cookie values still has 8-in 2**32 chance.
> 
> Reported-by: Jakob Lell <jakob@...oblell.com>
> Signed-off-by: Florian Westphal <fw@...len.de>

Applied.

Thanks for following up on all of my feedback.
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