RE: Snort Basica Help on tuning signatures

["Basselgia, Barry A Mr (NAF Atsugi)" <BABasselgia () atsugi navy mil>]

Another way to tune the signatures is to use the threshold.conf file.  If
you want to keep the rule active, but are getting "False Positives" from/to
a specific IP Address you suppress/limit the alerts.  Here is an example.

I have a few machines that run SNMP, I get a lot of hits on these machines
from the SNMP rules.  If I turn the rules off, and someone else tries to
exploit an SNMP vulnerability I wont detect it.  However, if I use the
threshold.conf file and suppress the alerts from the systems I know should
be running SNMP, I'll still get alerts if someone tries an SNMP attach/scan
on my network.

The threshold.conf file has comments in it that do a good job of telling you
how this works.

Barry


-----Original Message-----
From: snort-users-admin () lists sourceforge net
[mailto:snort-users-admin () lists sourceforge net]On Behalf Of
adamk () computer org
Sent: Monday, January 31, 2005 4:34 PM
To: 'sEc nErD'; Snort-users () lists sourceforge net
Subject: RE: [Snort-users] Snort Basica Help on tuning signatures


There are a few ways to do it, the easiest is one of the following:
1. You can disable groups of rules in snort.conf by commenting out (#) the
relevant line -
Ex: include $RULE_PATH/nntp.rules -> #include $RULE_PATH/nntp.rules
- OR -
2. You can comment out specific rules located in the rules directory, i.e.
if you're running IIS and want to disable WebDAV rules, comment out the
relevant WebDAV signatures.

Keep in mind that defining variables in your snort.conf file is an effective
method of tuning the policy.

Good luck
~ adam

 

-----Original Message-----
From: snort-users-admin () lists sourceforge net
[mailto:snort-users-admin () lists sourceforge net] On Behalf Of sEc nErD
Sent: Sunday, January 30, 2005 12:46 PM
To: Snort-users () lists sourceforge net
Subject: [Snort-users] Snort Basica Help on tuning signatures


hi all
Could anybone walk me through of how to go about tuning the snort signatures
,like how i could disable and enable them thanks


        
                
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