Subject: Re: SYN cookie ?
To: der Mouse <mouse@Rodents.Montreal.QC.CA>
From: Jason R Thorpe <thorpej@zembu.com>
List: tech-kern
Date: 04/23/2001 16:42:53
On Mon, Apr 23, 2001 at 01:20:11PM -0400, der Mouse wrote:
> > No, it doesn't.
>
> Why not? The firewall, by definition of syn-cookies, has kept no state
> and hence will not retransmit anything. The client, on the other hand,
> has no reason to think anything is amiss and is waiting for the server
> to send its greeting banner. (Assuming, as mentioned previously, that
Correct -- NetBSD's "syn cache", in fact, had a bug like this that
caused clients to hang in exactly this manner, before I fixed it
before the 1.4 release.
--
-- Jason R. Thorpe <thorpej@zembu.com>