Re: [patch] tcp connection tracking 2.4.19

Gianni Tedesco
2002-10-09T12:24:54Z

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On Tue, 2002-10-08 at 22:06, Roberto Nibali wrote:
> Welcome to the world of almost-stateful packet filtering. Hey, other
> than that, the 3wahas 'exploit' is old. Also don't I understand why they
> claim that SYN cookies prevent syn flooding. Next time you meet someone
> of the guys, tell them about the backlog queue.
>

"When syncookies are enabled the packets are still answered and this
value [tcp_max_syn_backlog] is effectively ignored." -- From tcp(7)
manpage.

The whole point of syncookies is to negate the need for a backlog queue.

Or did I miss your point?

--
// Gianni Tedesco (gianni at ecsc dot co dot uk)
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