Re: router syn/syn-ack/ack alarming...

[Paul Ferguson <pferguso () cisco com>]

If it were such a clean-and-dry issue, believe me, we 'router vendors'
would be happy to implement this knob; but alas, there are several valid
instances where the SYN/SYN-ACK/ACK conversation ratio is not quite
predictable.

In any event, we are not sitting idly -- more info as it becomes available.

- paul


At 01:23 PM 9/17/96 -0700, Regis Donovan wrote:

> um... maybe i'm missing the clue here, but if the router vendors add
> something that shuts down an interface if the SYN/SYN-ACK/ACK ratio
> becomes too bad make it *easier* for me if i'm doing a denial of service
> attack on a host?  
>
> instead of denying service to a given host, all i have to do is drive
> the router into alarm mode so it shuts off the interface and then i get
> to deny service to an entire segment and everything downstream from that
> segment...
>
> here's to better bang for your cracker-kiddie buck...
> --regis

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