Flawed Routers Flood University of Wisconsin Internet Time Server

[Dave Farber <dave () farber net>]

> Date: Fri, 29 Aug 2003 13:54:02 -0400
> From: Tom Goltz <tgoltz () QuietSoftware com>
> Subject: Flawed Routers Flood University of Wisconsin Internet Time Server
> X-Sender: tgoltz () mail quietsoftware com
> To: dave () farber net
>
>
> Dave - I think this would be an excellent item for distribution to the IP 
> list - very important reading for anyone implementing network software or 
> devices that will be using network services provided by a third 
> party.  (To give credit where it's due, I found a link to this on Phil 
> Kaplan's  profanely-named web site.)
>
>
>
> Flawed Routers Flood University of Wisconsin Internet Time Server
>
>
>
> Netgear Cooperating with University on a Resolution
>
>
>
> Dave Plonka, August 21, 2003 - <http://www.wisc.edu>University of 
> Wisconsin-Madison
> updated $Date: 2003/08/27 18:42:42 $
> plonka at doit dot wisc dot edu
> ABSTRACT
>
> In May 2003, the University of Wisconsin - Madison found that it was the 
> recipient of a continuous large scale flood of inbound Internet traffic 
> destined for one of the campus' public Network Time Protocol (NTP) 
> servers. The flood traffic rate was hundreds-of-thousands of 
> packets-per-second, and hundreds of megabits-per-second.
>
> Subsequently, we have determined the sources of this flooding to be 
> literally hundreds of thousands of real Internet hosts throughout the 
> world. However, rather than having originated as a malicious distributed 
> denial-of-service (DDoS) attack, the root cause is actually a serious flaw 
> in the design of hundreds of thousands of one vendor's low-cost Internet 
> products targeted for residential use. The unexpected behavior of these 
> products presents a significant operational problem for UW-Madison for 
> years to come.
>
> This document includes the initial public disclosure of details of these 
> products' serious design flaw. Furthermore, it discusses our ongoing, 
> multifaceted approach toward the solution which involves the University, 
> the products' manufacturer, the relevant Internet standards (RFCs), and 
> the public Internet service and user communities.
>
> http://www.cs.wisc.edu/~plonka/netgear-sntp/

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