Yup that order is pretty much on the money, also make sure you include
the rule SID and REV, and make sure your HOME_NET and EXTERNAL_NET
variables aren't set to "any". In some cases it also doesn't hurt to
include the version of snort your running.
As for when to resort to getting full dumps, if you can't do it all the
time, is when the protocol has extra context in the stream. Good
examples of this are DCERPC and SMB, as packets sent previously in the
stream influence what things mean latter on in the stream.
Cheers,
-matt
Russell Fulton wrote:
Thanks Matt & Janson for responses: This has confirmed what I had
thought. Methods of reporting by order of usefulness:
1/ tcpdump of whole session
2/ tcpdump of single packet
3/ Ascii/hex dump of packet from Acid/or whatever.
Is there much difference between 2 and 3? Given that 3 is much easier to
obtain.
When should I resort to getting full dumps of the streams?
I have reported FPs on many occasions before (although not lately) and
never had any feed back. I appreciate that folk are busy doing
productive stuff but I have been left wondering if it is worth my time
and if I am sending in the "right stuff".
I'd be happy if I got an occasional "Thanks, this is useful" or "Thanks,
but what I really need....".
Cheers, Russell
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