Re: [PATCH] fix small DoS on connect() (was Re: BUG: Unusual TCP Connect() results.)

[Herbert Xu]

On Mon, Jun 13, 2005 at 07:21:48AM +0200, Willy Tarreau wrote:
> 
> > A much better place to do that is netfilter.  If you do it there
> > then not only will your protect all Linux machines from this attack,
> > but you'll also protect all the other BSD-derived TCP stacks.
> 
> Netfilter already blocks simultaneous connection. A SYN in return to
> a SYN produces an INVALID state.

Any reason why that isn't enough?
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