On Mon, Jul 1, 2013 at 2:07 PM, David Blanton
<[email protected]> wrote:
> Wow - thanks Dan. Is there a link to all the variables that can be used in
> decoders for future reference? I find the original PDF lacking.
>

Not off hand. I'll try to work on that part of the documentation soon.

>
> On Monday, July 1, 2013 11:32:08 AM UTC-4, dan (ddpbsd) wrote:
>>
>> On Mon, Jul 1, 2013 at 10:52 AM, David Blanton
>> <[email protected]> wrote:
>> > Ideally, I would like the decoder to just look for 'FAILED : '
>> >
>> > could it also be like this?
>> >
>> > <decoder name="bnc">
>> > <prematch>FAILED : \d+</prematch>
>> >
>> > </decoder>
>> >
>>
>> Both of these decoders are bad. The first one didn't have an "<order>"
>> after the regex, and this one is way too broad IMO.
>>
>> With the limited sample size, I've gotten this to work:
>> <decoder name="bnc-decoder">
>>   <prematch>^\d+-\d+: \S+ \d+-\d+ \d+-\d+ \S+ </prematch>
>>   <regex offset="after_prematch">^(\S+): \S(\d+)$</regex>
>>   <order>status, extra_data</order>
>> </decoder>
>>
>> 2013/07/01 11:24:32 ossec-testrule: INFO: Reading local decoder file.
>> 2013/07/01 11:24:32 ossec-testrule: INFO: Started (pid: 25839).
>> ossec-testrule: Type one log per line.
>>
>>
>>
>> **Phase 1: Completed pre-decoding.
>>        full event: '119445-00025: P31128449pdf9030215.zip 0312-3
>> 11-28449 pdf903 FAILED: -351'
>>        hostname: 'arrakis'
>>        program_name: '(null)'
>>        log: '119445-00025: P31128449pdf9030215.zip 0312-3 11-28449
>> pdf903 FAILED: -351'
>>
>> **Phase 2: Completed decoding.
>>        decoder: 'bnc-decoder'
>>        status: 'FAILED'
>>        extra_data: '351'
>>
>> **Phase 3: Completed filtering (rules).
>>        Rule id: '1002'
>>        Level: '2'
>>        Description: 'Unknown problem somewhere in the system.'
>> **Alert to be generated.
>>
>>
>>
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