Tools classifying network traffic to applications

[Joe Shen <joe_hznm () yahoo com sg>]

Hi,

As I know there is tools designed to analyze VoIP
traffic, but for viewpoint of traffic management this
is not enough. Is there tool which could classify
network traffic to its applications?

e.g. the tools catch network traffic and recognize its
application type automatically. If 80% of (80/tcp) is
web browsing (tcp/80) is recognized as WEB browsing;
if 80% of (1234/tcp) is Edonky, it is recognized as
Edonkey application. 

Joe

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