Re: [MBONED] I-D Action:draft-ietf-mboned-multiaaa-framework-10.txt

[Hiroaki Sato <[e-mail]>]

Mark,

Thank you for your information.
I'm looking forward to hearing such information in the IETF.

It's difficult for NSP (L3 provider) to identify receivers.
NSP has receiver information only about source addresses of IGMP/MLD 
reports.
When a user has a home router, it looks like a receiver from NSP and NSP 
don't know actual receivers.
I think the NSP can only control of consuming NSP's network resources by 
a user.

Thank you,
Hiroaki

> Hiroaki,
>
> Please see below:
>
>>
>> Hiroaki,
>> Here a few notes that we had on AAA and Admission Control Framework
> for
>> Multicasting (draft-ietf-mboned-multiaaa-framework-10).
>>
>> 1.  Is there a mechanism to prevent the sharing of authorization
> (e.g.,
>> sharing an S,G among end users)?
>>
>
> ->  Our assumption is that the NSP identifies the user on L2 (such as
> ->  VLAN or PPP) And it would be
> ->  problematic for NSP if more than two receivers for the same user
> ->  accessed the same channel and one
> ->  is accepted but the other is rejected on L2 or L3.   Prevention of
> ->  unauthorized content sharing could be
> ->  handled on the application layer by the CP: e.g. could distinguish
> among
> ->  receivers and distribute encryption
> ->  keys so that non-authorized receivers can not make use of the
> content.
> ->
> ->  Do you have any ideas related to preventing the sharing of
> ->  authorization?  Do you have any proposals of
> ->  how the NSP might effectively distinguish among receivers on the same
>
> ->  line (is it necessary)?
>
> In investigating this issue, we uncovered some AT&T intellectual
> property that addresses preventing the sharing of authorization
> among end-users.  We are working with AT&T legal to determine
> the licensing conditions for this intellectual property.
> We will be filling an intellectual property disclosure as
> soon as possible with the IETF.
>
> Mark Altom
> Andy Huang
> Tom Imburgia
> Pat McCrink
> Han Nguyen
> Doug Nortz
> AT&T Labs
> (Contact Mark Altom: [e-mail]; [phone])
>
>
>


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