Re: [Ecrit] some observations from yesterday wg meeting

[Henning Schulzrinne <hgs at cs.columbia.edu>]

One possible difference is one of scale. You'd have to buy a lot of 
prepay cell phones to launch a serious DOS attack and then find lots of 
partners-in-crime to make them appear to come from a large number of 
different locations. I think we can approximate these limitations in a 
VoIP scenario by relying on network-layer information. Carrying this 
information with the call will allow the proxy to recognize that 
hundreds of calls are all coming from one IP address, say. (Botnets are 
a different problem.)

Drage, Keith (Keith) wrote:
> The issue you raise is not created by IP telephony. 
>
> The problem exists from the start of Pay as you go cellphones. There are now huge numbers of these phones circulating, all capable of making emergency calls, and large numbers of them totally untraceable back to an end user, due to various reasons like the user has moved (innocent) through to the user deliberately wanting a communication device that is untraceable so supplied false details to start off with.
>
> However, even with this, I do not currently see the anything different from Brian's listed priorities.
>
> regards
>
> Keith
>
> Keith Drage
> Lucent Technologies
> drage at lucent.com
> tel: +44 1793 776249

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