|−|==About == |+|
|−|Barnyard2 is an open source interpreter for Snort unified2 binary output files. |+|
|−|Its primary use is allowing Snort to write to disk in an efficient manner and |+|
|−|leaving the task of parsing binary data into various formats to a separate |+|
|−|process that will not cause Snort to miss network traffic. |+|
| || |
|−|Barnyard2 has 3 modes of operation: |+|
. , and .
|−| 1. batch (or one-shot), |+|
|−| 2. continual, and |+|
|−| 3. continual w/ bookmark. |+|
| || |
|−|In batch (or one-shot) mode, barnyard2 will process the explicitly specified |+|
|−|file(s) and exit. |+|
| || |
|−|In continual mode, barnyard2 will start with a location to look and a specified |+|
, and and todataand files.
|−|file pattern and continue to process new data (and new spool files ) as they |+|
| || |
|−|Continual mode w/ bookmarking will also use a checkpoint file (or waldo file in |+|
the to . a .
snort world) to track where it is. In the event the barnyard2 process ends |+|
|−|while a waldo file is in use, barnyard2 will resume processing at the last |+|
|−|entry as listed in the waldo file. |+|
| || |
|−|The "-f", "-w", and "-o" options are used to determine which mode barnyard2 |+|
to , .
|−|will run in. It is legal for both the "-f" and "-w" options to be used on the |+|
|−|command line at the same time, however any data that exists in the waldo file |+|
|−|will override the command line data from the "-f" and "-d" options. See the |+|
|−|command directives section below for more detail. |+|
| || |
|−|Barnyard2 processing is controlled by two main types of directives: input |+|
is and the of and.
|−|processors and output plugins. The input processors read information in from a |+|
|−|specific format ( currently the spo_unified2 output module of Snort ) and |+|
|−|output them in one of several ways. |+|
| || |
|−|==History == |+|
is a tool the of 's - by an system. and -in to the . can .
|−|Barnyard is a critical tool for the parsing of Snort's unified binary files, processing and on- forwarding to a variety of output plugins. Unfortunately it has not seen an updated in over 4 years and is not going to be maintained by the original developers. With the new version of the unified format (ie. unified2) arriving we need something to bridge this gap. |+|
|−|To quote directly from the Snort FAQ: |+|
|−|* "Barnyard is an output system for Snort. Snort creates a special binary output format called unified. Barnyard reads this file, and then resends the data to a database backend. Unlike the database output plug-in , Barnyard is aware of a failure to send the alert to the database, and it stops sending alerts. It is also aware when the database can accept connections again and will start sending the alerts again. " |+|
| || |
|−|The SXL team love barnyard. So much so that we want it to stay and have been tinkering around with the code to give it a breath of new life. Here is what we have achieved to far for this reinvigorated code base: |+|
to with the of is on .
|−|Parsing of the new unified2 log files. |+|
|−|*Maintaining majority of the command syntax of barnyard. |+|
|−|*Addressed all associated bug reports and feature requests arising since barnyard-0.2.0. |+|
|−|*Completely rewritten code based on the GPLv2 Snort making it entirely GPLv2. |+|
| || |
Sources == |+|
https:// github.com/ firnsy/barnyard2/ Github About page] |+|
http: //www.securixlive.com/barnyard2/about.php securixlive.com] |+|
Revision as of 14:21, 8 June 2014
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