State Super-DMCA Too True

Petri Helenius pete at he.iki.fi
Mon Mar 31 21:08:15 UTC 2003


> Well, most p2p apps live on well-known ports, and Cisco's QOS mechanism
> allows easy classification on ports.  Yes, most of the p2p apps are
> port-agile -- but only if they are completely blocked.  My experience is
> that if you let the p2p stuff through, it'll stick to its default port and
> you can police with impunity.

Our data shows that between 30% and 50% of p2p data flows on "non-standard"
ports if you run an unblocked environment.

Pete




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