nanog mailing list archives

Re: Nachi/Welchia Aftermath


From: haesu () towardex com
Date: Tue, 20 Jan 2004 18:46:01 -0500


        lesson learned:
        stop using /makeshift/ layer3 switches (without naming vendor) to run
        L3 core

-J

On Tue, Jan 20, 2004 at 02:22:52PM -0800, Brent Van Dussen wrote:

Well folks, since the middle of August I've been tracking the spread and 
subsequent efforts by our community to stop the nachia/welchia infection 
that took down so many networks.

Sadly, by my estimations, only about 20-30% of infected hosts were 
cleaned.  After Jan 1, 2004 it appears that the thousands, (millions?) of 
remaining infected hosts were rebooted and the worm removed 
itself.  Network traffic has finally returned to normal.

What kind of effects did everyone see from this devastating worm and what 
lessons did we learn for preventing network downtime in the future?

-- 
James Jun (formerly Haesu)
TowardEX Technologies, Inc.
1740 Massachusetts Ave.
Boxborough, MA 01719
Consulting, IPv4 & IPv6 colocation, web hosting, network design & implementation
http://www.towardex.com  | james () towardex com
Cell: (978)394-2867      | Office: (978)263-3399 Ext. 170
Fax: (978)263-0033       | AIM: GigabitEthernet0
NOC: http://www.twdx.net | POC: HAESU-ARIN, HDJ1-6BONE


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