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RE: SMURF AMPLIFIER BLOCK LIST -- VERY LARGE!!!!!!!!!!!!!!!
From: NOC <NOC () mercury balink com>
Date: Thu, 30 Apr 1998 15:44:58 -0400

Erik,

The script I wrote isn't really that smart... It just looks for two IP's
within the same /24 that were sending some kind of ICMP packet to the
victim machine.  Since NetFlow logs don't break ICMP down to the type
and codes, I had to unilaterally make that decision.  If your network is
clean, I sincerely apologize for any embarrassment or hassle this may
have caused, and I will remove it from the list.

Regards,
Christian

-----Original Message-----
From:  Erik Muller [SMTP:nc0773 () corp netcom com]
Sent:  Thursday, April 30, 1998 12:14 PM
To:    Martin, Christian
Subject:       Re: SMURF AMPLIFIER BLOCK LIST -- VERY LARGE!!!!!!!!!!!!!!!


163.179.230.0

This one's mine... the entire /24 is broken down as /30s, and .255 will 
respond with nothing more sinister than an ICMP unreachable.  Any details
on what results you saw that pointed to this network as an offender would 
be appreciated (since I can't see any danger from it).

----------------------------------------------------------------------------
Erik Muller, Network Engineer                         emuller () noc netcom net
NETCOM Network Services Support        NETCOM On-Line Communication Services


On Wed, 29 Apr 1998, Martin, Christian wrote:

All,

Here is my contribution to the block list.  The script that generated
this will follow.  It is 'public domain', in that it can be modified,
BUT, please give credit where credit is due!



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