your first move would be to decide if you want to work with flow-based or
packet-based techniques. For instance, 2005 SIGCOMM's paper called BLINC (
http://www.sigcomm.org/sigcomm2005/paper-KarPap.pdf) is a flow-based
technique and has a good level of accuracy for P2P traffic.

-- 
Stenio Fernandes
http://v2.steniofernandes.googlepages.com

On 9/15/07, Bryan Ford <[EMAIL PROTECTED]> wrote:
>
> A paper just appeared in this year's SIGCOMM about techniques to
> identify Skype traffic, such as a "randomness test" to detect which
> bits in a packet are encrypted; similar techniques might be applied
> to identifying other P2P protocols...
>
> http://www.sigcomm.org/ccr/drupal/?q=node/245
>
> Cheers,
> Bryan
>
> On Sep 15, 2007, at 4:37 PM, David Barrett wrote:
>
> > You could perhaps reverse DNS the destination IP and see if it either
> > has no record or falls under an ISP domain.  That won't be foolproof,
> > but neither are the other approaches.
> >
> > Perhaps it could be one factor in assigning a "p2p score" to each
> > packet.  Sum up and average the p2p scores of all packets coming
> > out of
> > a node and then you could have an overall p2p score for that node.
> >
> > It probably depends on your final goal.  What are you trying to
> > accomplish?
> >
> > -david
> >
> > On Sat, 15 Sep 2007 11:42 am, Steve Almasi wrote:
> >> Hi,
> >> now what are the more useful methods to identify the P2P traffic?
> >> In addition to the methods based on the payload inspection
> >> (signatures
> >> methods) and the heuristic methods (based on some general behavior of
> >> P2P
> >> traffic) there are some new approach to this issue?
> >>
> >>
> >> regards,
> >>       Steve "tder" Almasi
> >>
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