identifying application type of network traffic

Thu Dec 16 20:55:41 UTC 2004

	I believe NBAR stats are accessible via SNMP, so you can use MRTG to
graph application utilization.

http://vermeer.org/display_doc.php?doc_id=6

___________________________________________________________________

Thanks,
Rick Cheung

-----Original Message-----
From: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu]On Behalf Of
Adam Atkinson
Sent: Thursday, December 16, 2004 11:17 AM
To: NANGO
Subject: RE: identifying application type of network traffic

> Currently, I use (protocol, port_number) as indicator
> of application. Referring to rfc on wellknown protocol
> and port allocation, I can only identity about 50% of
> traffic type.
> 
> Is there a complete  (protocol, port_number) list ? or
> is there a better way to identify application type
> based on netflow data?

Cisco's "Network Based Application Recognition" can recognise quite
a few things, particularly a fair few p2p applications. It looks
at the actual contents of packets, not just the port numbers.

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