Snort mailing list archives

Re: ignore_scanned on sfportscan


From: Jesús Gálvez <jesuxgalvez () yahoo es>
Date: Fri, 11 Aug 2006 13:34:17 +0200 (CEST)

"You cannot use a variable in a preprocessor."

In sfPortScan I use variables and it works fine but ignore_scanned with $EXTERNAL_NET.

And if pass as parameters $EXTERNAL_NET and any variable more, work correctly. I don´t know why.

Joel Esler <joel.esler () sourcefire com> escribió: You cannot use a variable in a preprocessor.

What I would do in this case is to copy and paste the settings you  
have for $HOME_NET and put that in watch_ip.  Then tune from there.

Joel

On Aug 11, 2006, at 3:41 AM, Jesús Gálvez wrote:

Hi. I have a lot of falses positivos triggered by the preprocessor  
sfportscan. All have as destined IP external hosts. So I add the  
next parameter

ignore_scanned { $EXTERNAL_NET }

but log says that EXTERNAL_NET cannot be used in ignore_scanned.  
But it´s indeed what I want!

the complete configuration:


preprocessor sfportscan: proto  { all } \
                         memcap { 10000000 } \
                         sense_level { low } \
                         ignore_scanners { $HOME_NET } \
                         ignore_scanned { $EXTERNAL_NET }  <----  
this give the error

Thanks.




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joel esler          senior security consultant         1-706-627-2101
Sourcefire    Security for the /Real/ World -- http://www.sourcefire.com
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---------------------------------

LLama Gratis a cualquier PC del Mundo.
Llamadas a fijos y móviles desde 1 céntimo por minuto.
http://es.voice.yahoo.com
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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