[Snort-users] byte_test question

Joel Esler jesler at ...1935...
Fri Aug 24 14:18:10 EDT 2012


You'd probably have to write a shared object rule then.  

--
Joel Esler

On Aug 24, 2012, at 1:43 PM, "harry.tuttle" <harry.tuttle at ...15370...> wrote:

> But I don't want to see if byte A matches byte B. I want to see if byte A differs from byte B by |n|.
> 
> 
> ---- On Fri, 24 Aug 2012 09:28:08 -0700 Joel Esler  wrote ---- 
> 
>> byte_extract. 
>> 
>> If I am reading what you are saying correctly. Extract one byte then to a byte_test to see if the second byte matches the first. 
>> 
>> 
>> On Aug 24, 2012, at 11:58 AM, "harry.tuttle"  wrote: 
>> 
>>> I'm pretty sure there is no way to do this; someone please clue me in if I am missing something. 
>>> 
>>> I'd like to be able to test if two bytes differ by a certain amount. One or the other could be larger; the values of the bytes will vary, but they will always differ by the same amount. 
>>> 
>>> Thanks, 
>>> Harry 
>>> 
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