RE: [Sipping] A Framework for Reducing Spam for Internet Telephony

Dear Hannes,

This is a nice work that clearly matches also what we have in mind for the SPIT prevention system we are currently running.

Actually I wanted to let you know that for some of the interactions or authorization policies you describe in Figure 1 there are already available drafts that propose solutions:
http://tools.ietf.org/id/draft-niccolini-sipping-feedback-spit-03.txt
or describe scenarios for the interactions:
http://tools.ietf.org/id/draft-niccolini-sipping-spitstop-00.txt

It would be nice to have them referenced as well in the draft.

Moreover, our SPIT prevention framework (you can find references of it in proceedings of Globecom 2006) uses already some of the authorization policies you are describing also in the other draft (http://fon.gs/spit-requirements), namely:
-- we have built white/black list based on identities (or part of it), this matches Req-C 1 and Req-C 2
-- we block certain messages based on the spam-level marking, this supports Req-C 7
-- we mark the messages with a certain spam-level and forward this to the caller, this supports Req-A 2
-- we use some kind of Turing Tests built in answering machines, this supports Req-A 4
-- we also run anomaly detection methods able to mark the calls and make this available for other entities, this supports Req-T 1

I think all in all these two drafts you recently wrote complement well the SPITSTOP work we are currently discussing in the SPITSTOP mailing list, it is just a pity that they are coming too late to support the BOF request that was just rejected.

I hope we can sit together in Chicago at the BAR BOF and discuss the way to move the all work on SPIT forward in the IETF.

Cheers,
Saverio

> -----Original Message-----
> From: Hannes Tschofenig [mailto:Hannes.Tschofenig@gmx.net]
> Sent: Thursday, June 14, 2007 1:29 PM
> To: SIPPING LIST
> Subject: [Sipping] A Framework for Reducing Spam for Internet Telephony
> 
> Hi all,
> 
> we have just submitted a new draft on "A Framework for Reducing Spam for
> Internet Telephony".
> Please find the document here: http://fon.gs/spit-framework
> 
> This document attempts to scope the work on reducing Spam for Internet
> Telephony.
> 
> Ciao
> Hannes
> 
> 
> 
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