On Mon, 27 Nov 2006 20:12:58 GMT, Awais Awan said:
> I am working with slow tools and i want to llok at different flags using 
> n-filter. I have managed to look at SYN packets with ip-tcp-flag set to 
> 0x2 and ack packets with 0x10. Are these correct flags? Can i see at any 
> list of these tcp flags? Which tells me which flag represetns what. Like 
> they have told in the man pages that 0x2 will work for filtering SYN 
> packets. but what about other flags? is there any list that can tell me 
> the details of all falgs?

I would suggest a good book on the workings of TCP - Stevens comes to
mind.  Knowing what the bits are without understanding their interactions
will just lead to no good (for example - what RFC is being followed if
you find a *legitimate* packet that has both SYN and FIN set? :)

RFC791, 792, 793 are the official specifications of that stuff (although
a few bits got defined later, like ECN in RFC3168).

(For bonus points - anybody actually *seen* a legit SYN+FIN? :)

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