[Snort-users] Portscan preprocessors

Michael Steele michaels at ...9077...
Wed Jul 2 13:01:03 EDT 2003

Seems to me that I was having that problem and it was related to the output
database line. I am now using log and alert and I'm getting portscans logged
to ACID.


-Michael Steele
 System Engineer / Security Support Technician     
 mailto:michaels at ...9077...    
 Website: http://www.winsnort.com
 Snort: Open Source Network IDS - http://www.snort.org

-----Original Message-----
From: snort-users-admin at lists.sourceforge.net
[mailto:snort-users-admin at lists.sourceforge.net] On Behalf Of James Nonya
Sent: Wednesday, July 02, 2003 9:00 AM
To: snort-users at lists.sourceforge.net
Subject: Re: [Snort-users] Portscan preprocessors

On Tue, 1 Jul 2003 14:45:24 -0400
"Mike Feetham" <mike.feetham at ...9502...> wrote:

> I've been running Snort with Acid for awhile now,
and everything seems
> to be working properly, except detection of
portscans.  I'm using Snort
> 2.0 on RH8, and I'm logging to a MySQL database.  I
tried enabling the
> portscan preprocessor in the snort.conf file: 
"preprocessor portscan:
> $HOME_NET 4 3 /var/log/portscan.log".  I ran a few
portscans to test the
> preprocessor, but I didn't see anything happening in
the ACID console,
> though the scans appear in the /var/log/portscan.log
>   Next I tried disabling this preprocessor, and
enabling the
> conversation preprocessor: "preprocessor
> allowed_ip_protocols all, timeout 60,
max_conversations 3000", as well
> as the portscan2 preprocessor: "preprocessor
portscan2: scanners_max
> 256, targets_max 1024, target_limit 5, port_limit
20, timeout 60".
> After restarting snort, and running a few portscans,
I'm still not
> seeing anything in the ACID console.  Is there a
parameter I'm missing
> to get snort to log these portscans into the MySQL
> Any help is appreciated,
> Mike F.


I had the same issue ;-)


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