Basically Heuristic Dissector means that your dissector will accept all the 
Traffic Packets and will not segregate based on port number.
So to identify your own custom dissector protocol messages you have to separate 
out the packets based on certain criteria specific to your
Protocol.
And a normal dissector is registered with the Wireshark  based on port 
information which tells the Wireshark on which port your message is
Going to be exchanges.

I hope it clarifies.

Hemant.

________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Stevens
Sent: Wednesday, August 27, 2008 2:24 PM
To: [email protected]
Subject: [Wireshark-dev] heuristic Dissector vs. normal dissector

Hi!

What are the differences between a heuristic dissector and a normal dissector. 
So far i have not considered heuristic dissectors, because I did not know what 
they are and how to use them.
Maybe you can help!

Thanks in advance Tom (Germany)
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