New Denial of Service Attack on Panix

Wed Sep 18 11:51:56 UTC 1996

I'm wondering if this is not quite the panacea that it appears. More
thought is certainly required here... asymmetry being a problem that
leaps to mind.

- paul

At 01:02 PM 9/17/96 -0700, Vadim Antonov wrote:

>This is the excellent idea!  Actually, router vendors may simply
>add a feature which shuts down the interface if SYN/SYN-ACK balance
>is too bad -- thus disconnecting the hacker-to-be.
>
>Of course, that balance may be decaying with time, so repeated
>unsuccessful attempts to connect won't trigger alarms.
>
>--vadim
>
>Forrest W. Christian <forrestc at iMach.com> wrote:
>
>Maybe I'm missing something here, but wouldn't these Denial of Service 
>attacks cause a severe mismatch in the numbers of SYNs and SYN-ACKs on a 
>given router interface?
>
>If so, then couldn't we just sweet-talk cisco into providing 5 minute 
>counts of syns and syn-acks on an interface?
>
>