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Re: [Snort-users] sfportscan tuning

Subject: Re: [Snort-users] sfportscan tuning
Date: Wed, 12 Mar 2008 15:47:42 +1100
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.

--
Regards
Kam
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--
Joel Esler ï joel.esler@sourcefire.com







--
Regards
Kamran Shafi
+61 41 824 9510




-- 
Regards
Kamran Shafi
+61 41 824 9510
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