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Date: Thu, 12 Dec 2013 16:46:37 +0100
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Christian Grothoff <grothoff@in.tum.de>,
        Jacob Appelbaum <jacob@appelbaum.net>,
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        David Miller <davem@davemloft.net>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, knock@gnunet.org
Subject: Re: [PATCH] TCP: add option for silent port knocking with integrity protection
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On Thu, Dec 12, 2013 at 06:34:24AM -0800, Eric Dumazet wrote:
> With various proposals (like TCP minion), maybe its time to be able to
> implement part of TCP stack in user land (Keep the mux inside the
> kernel, and forward raw incoming packets to user land where all the
> crazy things can be done without kernel patching.)

Maybe this knocking scheme is implementable with a socket filter and we could
add a switch to tweak drop behaviour.