Snort mailing list archives

Re: [AUTO IP] Re: Question about content


From: Paul Schmehl <pschmehl_lists () tx rr com>
Date: Tue, 01 Dec 2009 13:23:27 -0600

I saw that.  The point is, you didn't come close to answering the OP's 
question.  Forget the assumptions you made, you looked for a word 4 bytes into 
the packet.  That wasn't what he asked for.  He asked how he could find the 
pattern at_the_end_of_the_packet without knowing the packet length.

The rest is irrelevant.

--On Tuesday, December 01, 2009 11:46:04 -0600 evilghost () packetmail net wrote:


Paul, since you failed at reading comprehension, here would be the
*critical* statement I made *before* I supplied the rule, as an example
of how PCRE could be used to detect what the OP has requested:

"Making assumptions about direction, protocol, and content I would try
something like this:"

I do appreciate your gems of wisdom concerning the ip based rule.


-- 
Paul Schmehl, Senior Infosec Analyst
As if it wasn't already obvious, my opinions
are my own and not those of my employer.
*******************************************
"It is as useless to argue with those who have
renounced the use of reason as to administer
medication to the dead." Thomas Jefferson


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