North American Network Operators Group
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Re: Source address validation (was Re: UUNet Offer New ProtectionAgainst DDoS)

  • From: Christopher L. Morrow
  • Date: Sun Mar 07 15:50:36 2004 
On Sun, 7 Mar 2004, Stephen J. Wilcox wrote:

>
> > actually, it would.  universal uRPF would stop some attacks, and it would
> > remove a "plan B" option for some attack-flowcharts.  i would *much* rather
> > play defense without facing this latent weapon available to the offense.
>
> I'm agreeing here, okay (yet anoter) example.. smurf attacks. These seem to be
> non-existent these days so shall we stop disabling 'ip directed-broadcast' on
> our routers?

smurf attacks are far from 'non-existent' today, however they are not as
popular as in 1999-2000-2001. In fact netscan.org still shows almost 9k
networks that are 'broken'.