Queries regarding FRAG3 & STREAM5

[Anshuman Anil Deshmukh <anshuman () cybage com>]

Hi,



I have some questions regarding FRAG3 & STREAM5 preprocessor. I did try to get answers in the previous posts but 
couldn't find it there and hence putting it here.



1.  For the said processors it's about defining policy for windows. As per the snort manual it is said that for FRAG3, 
windows version supported are 95/98/NT4/W2K/XP and for STREAM5 support is upto Vista. Just need to understand if both 
these preprocessors supports all the other windows versions that are currently available i.e. Windows server 
2003/2008/2012, Windows Vista, Windows 7 & Windows 8 (some already covered in stream5, but still not all of them).

2.  Does said preprocessors support all the 64 bit Windows versions and Server Core installations. If answer to all of 
these is yes, then why not include this in the snort manual? If answer is no, then how soon would they would be 
included?

3.  What if the ratio of windows:linux machine is around 50:50? Then, for configuring the target based IDS how should 
these preprocessors configured? And that too in a DHCP environment. If I am not wrong for DHCP environment, it can be 
achieved by having IP reservations on DHCP server for one of them as one can plan to have bind_to for networking 
devices as well. As per the snort design we can only have 2 definitions for bind_to



Thanks and Regards,

Anshuman



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