[Bro] Support SNMP and MODBUS/TCP Protocols?

[Hui Lin (Hugo)]

Hi, Huiping,

We are working on merging the Modbus at this moment. I think merging Modbus
would not take too long as the code size of it is not that big.

Also in case that you want to build your own analyzer in binpac, here is
some sample codes:
http://www.bro-ids.org/development/binpac-sample-analyzer.html

FYI, binpac can easily handle application layer protocol directly over TCP
or UDP. But with complex protocol which includes session layer or
presentation layer, u may need to do some modifications on Bro's code to
integrate binpac code.

Hope this help.

Best,

Hui


On Tue, Aug 14, 2012 at 9:04 AM, Huiping Song
<Huiping.Song at ultra-3eti.com>wrote:

> Hi Robin,
>
> Thanks for the updates.  Good to know that there will be a prototype of
> MODBUS support in Bro 2.2.  Any estimates about the release timeline for
> Bro 2.2?
>
> Can the prototype of MODBUS support also be customized to work with Bro
> 2.0 quickly?  We are eager to experiment using Bro to monitor and analyze
> MODBUS/TCP traffic. :)
>
> Best regards,
> Huiping
>
>
> -----Original Message-----
> From: Robin Sommer [mailto:robin at icir.org]
> Sent: Monday, August 13, 2012 7:21 PM
> To: Huiping Song
> Cc: bro at bro-ids.org
> Subject: Re: [Bro] Support SNMP and MODBUS/TCP Protocols?
>
>
> On Mon, Aug 13, 2012 at 20:56 +0000, you wrote:
>
> > We like to use Bro to monitor and analyze SNMP and MODBUS/TCP traffic
> > in industrial control networks.  Does the latest version of Bro
> > support SNMP, MODBUS/TCP and any other industrial control protocols?
>
> No, not yet. We've a prototype of Modbus support (and DNP3), which will
> likely make it into Bro 2.2. Nobody is working on SNMP yet though as far as
> I know.
>
> > If not currently supported, what are the typical steps to make bro to
> > support a new protocol?
>
> The best way is to use our binpac parser generator, see here for a
> skeleton:
>
>     http://www.bro-ids.org/development/binpac-sample-analyzer.html
>
> Also take a look at the existing analyzers in src/*.pac.
>
> Robin
>
> --
> Robin Sommer * Phone +1 (510) 722-6541 * robin at icir.org
> ICSI/LBNL    * Fax   +1 (510) 666-2956 *   www.icir.org
>
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>



-- 
Hui Lin
PhD Candidate, Research Assistant
Electrical and Computer Engineering Department
University of Illinois at Urbana-Champaign
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