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Date: Mon, 23 Feb 2009 13:46:46 -0800 From: Stephen Hemminger <shemminger@...tta.com> To: Herbert Xu <herbert@...dor.apana.org.au> Cc: David Miller <davem@...emloft.net>, hawk@...u.dk, netdev@...r.kernel.org Subject: Re: [PATCH] ip: add loose reverse path filtering On Sun, 22 Feb 2009 16:34:36 +0800 Herbert Xu <herbert@...dor.apana.org.au> wrote: > On Sat, Feb 21, 2009 at 11:56:01PM -0800, David Miller wrote: > > > > > Rather than extending the rp_filter stuff any further, I'd prefer > > > to see this replaced with netfilter plugin. > > > > Normally I would agree, but in this case the cost is exactly > > zero for the added flexibility. > > Ah I thought there was another patch coming :) But obviously as > this is all that's needed for it sure it looks good to me too. > > Cheers, Also, the purpose of reverse path filtering is to block Dos attacks. So it is important to do any rejection with least overhead. If the filter is iptables rules, it takes longer and requires another route lookup. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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