Re: [NANOG] [Nanog] P2P traffic optimization Was: Lies, Damned Lies, and Statistics [Was: Re: ATT VP: Internet to hit capacity by 2010]

[Eric Osterweil <eoster () cs ucla edu>]

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On Apr 24, 2008, at 6:48 AM, Keith O'Neill wrote:

> The iTrackers just helps the nodes to talk to each other in a more
> efficient way, all the iTracker does is talk to another p2p tracker  
> and
> is used for network topology, has no caching or file information or  
> user
> information..

After reading the P4P paper, it seems like the iTrackers have some  
large implications.  Off the top of my head:
- - The paper says, "An iTracker provides... network status/ 
topology..." doesn't it seem like you wouldn't want to send this to  
P2P clients?  Is the "PID" supposed to preserve privacy here?  I have  
some doubts about how well the PID helps after exposing ASN and LOC.
- - As a P2P developer, wouldn't I be worried about giving the iTracker  
the ability to tell my clients that their upload/download capacity is  
0 (or just above)?  It seems like iTrackers are allowed to control  
P2P clients completely w/ this recommendation, right?  That would be  
very useful for an ISP, but a very dangerous DoS vector to clients.

These are just a couple of the thoughts that I had while reading.

Eric

> Keith O'Neill
> Pando Networks
>
> Mike Gonnason wrote:
> > On Thu, Apr 24, 2008 at 5:30 AM, Michael Holstein
> > <michael.holstein () csuohio edu> wrote:
> >
> > > > ISP's have been very clear that they regard their network maps  
> > > > as being proprietary for many good reasons. The approach that  
> > > > P4P takes is to have an intermediate server (which we call an  
> > > > iTracker) that processes the network maps and provides  
> > > > abstracted guidance (lists of IP prefixes and percentages) to  
> > > > the p2p networks that allows them to figure out which peers are  
> > > > near each other. The iTracker can be run by the ISP or by a  
> > > > trusted third party, as the ISP prefers.
> > >
> > >  Won't this approach (using a ISP-managed intermediate)  
> > > ultimately end up
> > >  being co-opted by the lawyers for the various industry "interest  
> > > groups"
> > >  and thus be ignored by the p2p users?
> > >
> > >  Cheers,
> > >
> > >  Michael Holstein
> > >  Cleveland State University
> >
> > This idea is what I am concerned about. Until the whole copyright  
> > mess
> > gets sorted out, wouldn't these iTracker supernodes be a goldmine of
> > logs for copyright lawyers? They would have a great deal of
> > information about what exactly is being transferred, by whom and for
> > how long.
> >
> > -Mike Gonnason
> >
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>
>
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