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SubjectRe: T/TCP: Syn and RST Cookies
it was :(

I had actually tried to use the 2.1.x kernels, back in January, but it
turned out the the TCP code wasn't working very well at the time so I
would have spent more time at it then with the 2.0.x. It was easy to see
the advantages of the 2.1.x with the timestamp and window scale options
aswell, and how easy it would have been to implement.

Where could I find out more information about the transactions being
played twice?

Thanks.

Mark Stacey
... and that's my two cents.
"Its not that I forgot, its just that I can't remember"

On Sun, 12 Apr 1998, David S. Miller wrote:

> Date: Sun, 12 Apr 1998 16:47:50 +0100 (IST)
> From: Kent Brockman <heathclf@skynet.csn.ul.ie>
>
> au contraire, for my final year project I have to implement T/TCP
> for linux, its almost done (not perfect) and I'll be making a patch
> available within the next week or two. Unfortunately it's only for
> the 2.0.32 kernel (the 2.1.x weren't stable enough), but with minor
> modifications, it should work with 2.0.33 and 2.0.34 when
> available.
>
> I imagine the implementation for 2.0.x was a mess. Porting it to
> current 2.1.x should be a breath of fresh air in comparison.
>
> I know the current spec for T/TCP has a lot of opposition, but for
> research purposes, are there any more problems with it, besides SYN
> flood attacks and rlogin authentication problems?
>
> There are corner case bugs with transactions being played twice
> etc. and this was proven by some researchers at MIT if I remember
> correctly.
>
> Later,
> David S. Miller
> davem@dm.cobaltmicro.com
>
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