netdev - Re: [PATCH net-next] tcp: implement RFC 5961 4.2

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Message-Id: <20120717.074101.134339589368651253.davem@davemloft.net>
Date:	Tue, 17 Jul 2012 07:41:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, kkiran@...adcom.com
Subject: Re: [PATCH net-next] tcp: implement RFC 5961 4.2

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 17 Jul 2012 13:41:30 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Implement the RFC 5691 mitigation against Blind
> Reset attack using SYN bit.
> 
> Section 4.2 of RFC 5961 advises to send a Challenge ACK and drop
> incoming packet, instead of resetting the session.
> 
> Add a new SNMP counter to count number of challenge acks sent
> in response to SYN packets.
> (netstat -s | grep TCPSYNChallenge)
> 
> Remove obsolete TCPAbortOnSyn, since we no longer abort a TCP session
> because of a SYN flag.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Looks good, applied, thanks Eric.
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