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Re: [Sipping] SPAM, consent & their requirements




On Sep 6, 2005, at 4:02 PM, Jeroen van Bemmel wrote:

All,
 
It's been some time (last message dates back to 25th of July) since the drafts related to the Consent framework, its requirements and SIP SPAM were discussed on this list. A brief look at the pending drafts overview shows that several are waiting for this work to finish.
 
Assuming there is still interest in this, I have a question (or rather observation) for discussion:
I think a difference between SPAM and a DoS attack is, that SPAM can be addressed by preventing delivery to the end user, while a DoS attack requires prevention of delivery to the end user's device. Obviously the latter accomplishes the former, so a consent framework that prevents delivery to the device also prevents SPAM
 
My question is: are any more "lightweight" solutions being considered that would perhaps not solve DoS attacks but could help prevent SPAM?
I could think of some (perhaps obvious) approaches such as an endpoint-based whitelist using requestor Identity or (if not available) a shared secret per buddy



The IESG will require us to have an adequate solution to the DoS issues for advancing the list-services documents, independently of any SPAM issues.


We have a SPAM-related draft at:

http://www.ietf.org/internet-drafts/draft-ietf-sipping-spam-01.txt

--
Dean


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