Re: Snort/Banyard2 Logging

[beenph <beenph () gmail com>]

On Fri, Jul 13, 2012 at 4:33 PM, Eric Luellen <eluellen () perimeterusa com> wrote:
> Hello,
>
> I need some help with my Snort/Barnyard2 setup. My goal is to have Snort
> send unified2 logs to Barnyard2 and then have Barnyard2 send the data to
> other locations. Here is my current setup.
>
> OS
> - Scientific Linux 6
>
> Snort Version
> - 2.9.2.3
>
> Barnyard2 Version
> - 2.1.9
>
> Snort command
> - snort -c /etc/snort/snort.conf -i eth2 &
>
> Barnyard2 command
> - /usr/local/bin/barnyard2 -c /etc/snort/barnyard2.conf -d /var/log/snort -f
> snort.log -w /var/log/snort/barnyard.waldo &
>
> snort.conf
> - output unified2: filename snort.log, limit 128
>
> barnyard2.conf
> - output alert_syslog: host=127.0.0.1
> - output database: log, mysql, user=snort dbname=snort password=password
> host=localhost
>
> With this setup, barnyard2 is showing all of the correct information in the
> database and I'm using BASE to view it on the web GUI. I was hoping to be
> able to send the full packet data to syslog with barnyard2 but after reading
> around, it seems that it is impossible to do that. So I then started trying
> to modify the snort.conf file and add lines like "output alert_full:
> alert.full". This definitely gave me a lot more information but still not
> the full packet data like I want. So my question is, is there any way I can
> use barnyard2 to send the full packet data of alerts to a human readable
> file? Since I can't send it directly to syslog, I can create another process
> to take the data from that file and ship it off to another server. If not,
> what flags and/or snort.conf configuration would you recommend to get the
> most data possible but still be able to handle quite a bit of traffic? In
> the end of it all, these alerts will be shipped to a central server via a
> SSH tunnel. I'm trying to stay away from databases and would like to get the
> type of output you get when you add the –v flag and log to the console.
> However I don’t want it for all traffic, just the alerts. Thanks in advance
> for any help.

Greetings Eric,

Barnyard 2-1.10 has the ability to send full packet over syslog

You can get it from there https://github.com/firnsy/barnyard2/tree/pre-stable

You could reach your objective by using the following configuration
line (adjust it for your setup)
# output log_syslog_full: sensor_name snortIds1-eth2, server
xxx.xxx.xxx.xxx, protocol udp, port 514, operation_mode complete
or
# output log_syslog_full: sensor_name snortIds1-eth2, server
xxx.xxx.xxx.xxx, protocol tcp, port 514, operation_mode complete

-elz

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