[Snort-users] snort on OSSIM

Crook, Parker Parker_Crook at ...14786...
Tue Mar 16 16:16:36 EDT 2010


Joel,

You are correct in that I made an error (no commas), it should look like:

DEBIAN_SNORT_INTERFACE="eth1 eth2"

Then you have to run ossim-reconfig, and ossim will run two instances of Snort (on OSSIM 2.1 this would create two binaries, snort_eth1 and snort_eth2, but I have not tested on OSSIM 2.2).  I posted up my findings on this thread a while back:  https://www.alienvault.com/forum/index.php?t=msg&goto=5566&S=b8d60b94e6c1d460ebf808dfc78343a5#msg_5566

-Parker

-----Original Message-----
From: Joel Esler [mailto:jesler at ...1935...]
Sent: Tuesday, March 16, 2010 4:01 PM
To: Crook, Parker
Cc: Kaushal Shriyan; snort-users at lists.sourceforge.net
Subject: Re: [Snort-users] snort on OSSIM

Have you tested to make sure that Snort is listening on all three interfaces that you describe below?  Or does Snort only accept the first one in this list?

I don't think you can do that "eth1,eth2,eth3" specification, I've never tested it, and have no way to do it right now...

J

On Mar 16, 2010, at 2:41 PM, Crook, Parker wrote:

> Kaushal,
>
> Ray is correct - I was using Snort on OSSIM for a quite a while and the snort files are located in /etc/snort.  As far as tuning snort, you would still need to define your variables in the snort.ethX.conf file, where ethX is the configuration file Snort will use for the respective interface.
>
> As far as configuring goes, there is a snort.debian.conf file that you can use to set some of your options (example contents below):
>
> #this sets $HOME_NET in command-line call - leave empty if $HOME_NET is set #in you config file, else, define here.
> DEBIAN_SNORT_HOME_NET="192.168.0.0/16,1.2.3.0/24"
> #listen on eth1, eth2, and eth3 - starts multiple instances of snort, using #their respective config files
> DEBIAN_SNORT_INTERFACE="eth1,eth2,eth3"
> #use Berkley Packet Filter file
> DEBIAN_SNORT_OPTIONS="-F bpf.filt"
> DEBIAN_SNORT_SEND_STATS="true"
> DEBIAN_SNORT_STARTUP="boot"
> DEBIAN_SNORT_STATS_RCPT="root"
> DEBIAN_SNORT_STATS_THRESHOLD="1"
>
> Now, stepping outside of talking about Snort, if you are using OSSIM in all-in-one mode, then your output module for Snort should already be configured and logging to your database out of the box (otherwise you will need to setup the sensor->server communication channel in the OSSIM configs).  You can view alerts from Snort on the webpage under Events->Alerts I believe...
>
> Hope this helps,
> Parker Crook
>
> -----Original Message-----
> From: Ray Caparros [mailto:arcy24 at ...11827...]
> Sent: Tuesday, March 16, 2010 12:19 PM
> To: Kaushal Shriyan
> Cc: snort-users at lists.sourceforge.net
> Subject: Re: [Snort-users] snort on OSSIM
>
> Kaushal,
>
> I believe the snort instance in OSSIM is located at /etc/snort.
> Here's the link on their forum https://www.alienvault.com/forum/
>
> -Ray
>
> On Tue, Mar 16, 2010 at 11:29 AM, Kaushal Shriyan
> <kaushalshriyan at ...11827...> wrote:
>> Hi
>>
>> I am newbie to snort. On what parameters or basis do i need to
>> configure ruleset in snort. I am using snort under OSSIM Application.
>>
>> Please suggest/guide.
>>
>> Thanks and Regards,
>>
>> Kaushal
>>
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>
> ------------------------------------------------------------------------------
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> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
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> ------------------------------------------------------------------------------
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> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
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--
Joel Esler











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