RE: TCP Flags & MySQL

["Paul Melson" <pmelson () gmail com>]

-----Original Message-----
Subject: Re: [Snort-users] TCP Flags & MySQL

> TCP flags are in "decimal" value.  So.  2 would be SYN, and 18 would be a
combination of two 
> flags,  ACK = 16 and SYN = 2, so 18 = SYN, ACK.
>
> The number in the tcp_win size is the "window size" of the packet. You can
google all sorts 
> of information concerning either of these topics.
>
> You can write a BPF filter for Snort or tcpdump to look for these values
(if you want to 
> look at them in a dump format) with the bpf filter of 'port 0 and tcp[13]
= 2 or tcp[13] = 
> 18'.

Joel, 

Thanks for the answer.  This is exactly what I was looking for.


> It might be easier to install a GUI for the db, like BASE.  That way you
can "see" these 
> alerts in your browser.

In the case where a packet payload is present, the GUI we're using does
display all of the TCP and IP header info from MySQL.  It just happened that
this time I wanted that info but couldn't use our GUI since this rule
doesn't record payload.

Thanks again.

PaulM





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