Snort mailing list archives

RE: Dual Alerts ?


From: David Markle <davidmarkle () comcast net>
Date: Mon, 14 Apr 2003 18:57:06 -0400

RE: [Snort-users] Dual Alerts ?I was under the impression that the command line argument for syslog overrides the 
snort.conf file settings, therefore strayed from that approach.  Although working you your suggestion, I (had) the 
following:

output alert_syslog: LOG_local1 LOG_ALERT
output database: alert, mysql, user=root password=mypwd dbname=snort host=localhost 

In my local syslog.conf, I have remote logging to another host from the local1 facility.  I bit convoluted, but 
functional.

-----Original Message-----
From: L. Christopher Luther [mailto:CLuther () Xybernaut com]
Sent: Monday, April 14, 2003 1:37 PM
To: 'davidmarkle () comcast net'
Cc: Snort-Users (E-mail)
Subject: RE: [Snort-users] Dual Alerts ?


Hi, David.  

I run two Snort sensors in a Win32 environment.  Both sensors "log" to MySQL and also alert to two separate end-points: 
 syslog and a text file.  My output statements in snort.conf look like:  

  output alert_fast: alert.ids 
  output database: log, mysql, host=somehost port=3306 dbname=snortdb user=snort 
                   password=somepassword sensor_name=sensor1 encoding=hex detail=Full 
  output alert_syslog: LOG_AUTHPRIV LOG_ALERT 

My syslog server is a remote server, and I specify the address of that server using the '-s ipaddr:514' command line 
parameter for Snort.  

I get no duplicate alerts.  So what are the exact output statements you're using in snort.conf, and what is the command 
line you're using to start Snort?  

- Christopher 



-----Original Message----- 
From: David Markle [mailto:davidmarkle () comcast net] 
Sent: Sunday, April 13, 2003 9:44 PM 
To: snort-users 
Subject: [Snort-users] Dual Alerts ? 



I would really like to have TWO working OUTPUT PLUGINS: (Databases and Syslog).  From what I have determined, two 
Syslog FACILITIES are used (auth.notice and daemon.notice).  The auth.notice (which is configurable in the snort.conf) 
is used for alerts and daemon.notice is used for snort start/stop etc.  

Both output plugins are important because I want Syslog to a remote host and the database output plug for ACID.  The 
problem is, I'm getting dual alerts in both ACID and Syslog and do not know why, (other than two output plug entries in 
the .conf file - duh).  Can't the output plugs fork the data independently ?  Is this a limitation of the product or my 
knowledge ??

Thanks in advance. 

David Markle 





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