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North American Network Operators Group

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Re: SMURF amplifier block list

  • From: Karl Denninger
  • Date: Tue Apr 14 16:40:10 1998

Good point.

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On Tue, Apr 14, 1998 at 03:25:34PM -0500, Stephen Sprunk wrote:
> Are we really concerned about being smurfed by a /30, or even a /27?
> 
> The essential problem is backbone class-C's, especially those in NAPs
> where coordination is nearly impossible.  Smaller subnets tend to be in
> small ISPs' or customers' networks, which don't pose a threat since they
> lack the bandwidth for an effective attack.
> 
> Stephen
> 
> 
> Karl Denninger wrote:
> > 
> > The larger problem is that subnetted /24s still are wide open.  This kind of
> > filter won't block anything from their broadcast addresses, since they're
> > not the .255 address.
> > 
> 
> -- 
> Stephen Sprunk      "Oops."                 Email: sprunk@paranet.com
> Sprint Paranet        -Albert Einstein      ICBM:  33.00151N 96.82326W




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