North American Network Operators Group

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Re: Huge smurf attack

  • From: Brandon Ross
  • Date: Sat Jan 09 16:09:19 1999

On Sat, 9 Jan 1999, Brandon Ross wrote:

> We are currently seeing a smurf attack larger than any one we've ever seen
> before... it looks like it's causing us over 200Mb/s of incoming
> echo-reply traffic to (our IRC server, imagine that).
> Please check your networks and see if you can help us trace this attack to
> the perpetrator, we'd love to prosecute if we can find them.

This attack has now stopped.  I managed to collect over 100,000 addresses
that we being used as amplifiers in this attack.  If anyone would like a
copy, please let me know.

Brandon Ross            Network Engineering     404-815-0770 800-719-4664
Director, Network Engineering, MindSpring Ent., Inc.  [email protected]
                                                            ICQ:  2269442

Stop Smurf attacks!  Configure your router interfaces to block directed
broadcasts. See for details.