ack packets and data sequence

["Jeffrey Starin" <jeffs () speakeasy net>]

A nice person responded to my previous query about how to track packets after an alert has been triggered using the 
dynamic rules.  Okay, that is fine, but it is also bringing in packets that just contain header information and not the 
raw data.  I did notice that the data I am looking for always has the ack bit set equal to the previous ack bit, 
whereas the data I am not interested in always has a different ack bit sequence from the previous.  So... I guess my 
next question would be if there is a way to track only certain ack  bits and how would one actually get that bit into a 
variable or whatever, to track?
Thanks...
bulgin




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