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Network Security Snort-Users
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Re: [Snort-users] what's the difference between alert_fast and alert_uni

Subject: Re: [Snort-users] what's the difference between alert_fast and alert_unified?
Date: Sat, 22 Oct 2005 11:09:02 +0800
how can I change to use barnyard ? any suggestion?

I change my snort.conf into :
 output alert_unified: snort.alert
 output log_unified : snort_log

and set the barnyard.conf with:
 output alert_acid_db: mysql, dadabase snort, server localhost, user
snort, password XXX
 output log_acid_db: mysql, dadabase snort, server localhost, user
snort, password XXX

and next step , I don't know, how can I direct the snort output file
into barnyard?


On 10/22/05, Patrick Harper <patrick@internetsecurityguru.com> wrote:
Yes, with barnyard

-----Original Message-----
From: snort-users-admin@lists.sourceforge.net
[mailto:snort-users-admin@lists.sourceforge.net] On Behalf Of zhaohui yin
Sent: Friday, October 21, 2005 8:32 PM
To: Matt Kettler
Cc: snort-users@lists.sourceforge.net
Subject: Re: [Snort-users] what's the difference between alert_fast and
alert_unified?

thanks.

I am use snort output to mysql ,  use unified output can transfer to
mysql input?

On 10/21/05, Matt Kettler <mkettler@evi-inc.com> wrote:
zhaohui yin wrote:
Hi all:
    I am confused the snort option about alert_fast /alert_unified,
and want to known in which mode ,snort will run fastest.

unified is faster than alert_fast. "alert_fast" is a text-mode log for
alerts,
and while it's fast for text mode, and much faster than alert_full, it's
still a
text log.

However, alert_unified is a binary format and you need to use barnyard to
post-process the alerts into readable text. The unified binary format lets
snort
dump the alerts to disk with an absolute minimum amount of overhead, as it
doesn't need to look up the alert descriptions, etc when logging.

   I run snort with -b -A fast option, any suggestion?

By using -b you're already getting some speed benefit, as your packet log
is
binary. Unified would extend this and make both your packet and your alert
logs
binary.





--
yinzhaohui


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--
yinzhaohui


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