North American Network Operators Group

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Re: Smurf tone down

  • From: Dan Hollis
  • Date: Sat May 01 03:22:17 1999

On Sat, 1 May 1999, Joe Shaw wrote:
> After dealing with UUNet security regarding several smurf incidents I
> asked them this same question.  Their response (and I'm sure it would be
> the same response of others) was that a lot of the routers on their
> network couldn't handle the load of using CEF-CAR to limit smurf attacks.

The explanation I got from uunet regarding smurf attacks and why they
dont shut down their smurf amplifiers when notified repeatedly about
them, is that their ascend tnt's dont support icmp filtering.