netdev - Re: [PATCH 2/2] ip: local port range robustness

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Message-Id: <20071010.174350.104031474.davem@davemloft.net>
Date:	Wed, 10 Oct 2007 17:43:50 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...ux-foundation.org
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 2/2] ip: local port range robustness

From: Stephen Hemminger <shemminger@...ux-foundation.org>
Date: Wed, 10 Oct 2007 17:00:22 -0700

> Expansion of original idea from Denis V. Lunev <den@...nvz.org>
> 
> Add robustness and locking to the local_port_range sysctl.
> 1. Enforce that low < high when setting.
> 2. Use seqlock to ensure atomic update.
> 
> The locking might seem like overkill, but there are
> cases where sysadmin might want to change value in the
> middle of a DoS attack.
> 
> Signed-off-by: Stephen Hemminger <shemminger@...ux-foundation.org>

Applied.
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