AT&T TO VUZE: YOUR TCP RESET TEST PROVES NOTHING

[David Farber <dave () farber net>]

________________________________________
From: WWWhatsup [joly () punkcast com]
Sent: Wednesday, April 30, 2008 8:42 AM
To: David Farber
Subject: AT&T TO VUZE: YOUR TCP RESET TEST PROVES NOTHING

> AT&T TO VUZE: YOUR TCP RESET TEST PROVES NOTHING
> [SOURCE: ars technica, AUTHOR: Matthew Lasar]
> AT&T has sent a cool response to the Vuze Corporation's "Plug-In" survey of ISPs, ranked by their median rate of TCP 
> reset activity: "Given that Vuze itself has recognized these problems with the measurements generated by its Plug-In, 
> we believe that Vuze should not have published these misleading measurements, nor filed them with the [Federal 
> Communications Commission]." So AT&T Vice President Charles Kalmanek Jr. wrote to Vuze CEO Gilles BianRosa, following 
> the P2P content provider's FCC filing last week. And AT&T insists that it does not insert false reset signals into P2P 
> packets. AT&T's April 24th response categorically denies that any negative significance can be traced from Vuze's 
> experiment. "AT&T does not use 'false reset messages' to manage its network," the telco giant says. "We agree with 
> Vuze that the use of the Vuze Plug-In to measure network traffic has numerous limitations and deficiencies, and does 
> not demonstrate whether any particular network providers or their customers are using TCP Reset messages for network 
> management purposes." And in its response, AT&T forwarded Vuze and the FCC an academic paper from Canada's University 
> of Calgary, which argues that resets often occur due to "network outages, attacks, or reconfigurations." The authors 
> based their conclusions, published in 2004, on a one year study of the Calgary campus network, which found that 15 to 
> 25 percent of TCP connections had at least one reset.
> http://arstechnica.com/news.ars/post/20080428-att-to-vuze-your-tcp-reset-test-proves-nothing.html

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