Snort mailing list archives

Re: Content Usage


From: "Rodrigo B. Ramos" <rodrigo.ramos () triforsec com br>
Date: Thu, 25 Mar 2004 14:33:18 -0300

Hi,

The search is done at the assembled packet.
I do not know if there is a recommended general size.

If you do not know where is the "string" that you are searching, then
how can you define a size. 

IMHO a better idea is to try to analyze some packets with the "string"
(work, virus, etc) that you are trying to detect and try to find a
patterns.



Best regards,
Rodrigo Ramos
http://www.triforsec.com.br
http://www.defenselayer.com


On Wed, 2004-03-24 at 22:13, Steve Johnson wrote:
Hi,
Does using the "content" keyword without any attributes like
depth means search for the string in the total assembled
payload or search for the content in the unassembled first 
packet payload ?

If the content is to be searched in the total assembled
payload, for the sake of efficiency is there a recommended
size of the assembled packet to check it in ? 


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