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Re: [Snort-users] sfportscan tuning

Subject: Re: [Snort-users] sfportscan tuning
Date: Wed, 12 Mar 2008 08:00:00 -0400
Have you looked that the readme?

--
Joel Esler
Sent from the iRoad.

On Mar 12, 2008, at 12:47 AM, "Kamran Shafi" <kamran.shafi@gmail.com> wrote:

Oops guess I replied to personal address.

On Wed, Mar 12, 2008 at 3:45 PM, Kamran Shafi <kamran.shafi@gmail.com> wrote:
Thanks for a quick reply Joel,


In the conf file there are apparently only three levels (low, medium and high) of sensitivity that you can set for sfportscan preprocessor which I believe have their thresholds set internally. I understand that the local and global thresholds can be configured using threshold directives at rule level or globally but that does not seem to effect the preprocessor settings. I am actually simulating some scanning activity which is being detected by the portscan preprocessor, but I want snort to alert more often than it is doing with the high sensitivity.

What am I missing and sorry for my ignorance :(.


On Wed, Mar 12, 2008 at 11:24 AM, Joel Esler <joel.esler@sourcefire.com > wrote:
Take a look at the snort.conf file in the etc/ directory. All your config options are in there. The README is in doc/


J

On Mar 11, 2008, at 8:10 PM, Kamran Shafi wrote:

Hi all,

Do I need to change the threshold settings of portscan preprocessor in src/preprocessors/portscan.c or is there a softer way of changing the thresholds for the alerts generated by this preprocessor??

Do I need to uninstall Snort first when I modify the .c file and then recompile? I earlier installed Snort using the package manager, I guess after doing this change I will just need to follow the standard sequence of make

make clean
./configure
make
make install

Am I right or missing some step? Sorry if its a very basic question - just didn't want to stuff up my existing setup.

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Regards
Kamran Shafi
+61 41 824 9510



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Regards
Kamran Shafi
+61 41 824 9510
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