[Bro] Bro with 10Gb NIC's or higher

[Brandon Lattin]

Turn on the capture-loss script by adding the following to your local.bro:

@load misc/capture-loss

On Thu, Jan 8, 2015 at 10:31 AM, John Donnelly <jdonnelly at dyn.com> wrote:

> How does one know if bro is dropping (10%)  of messages ?
>
> On Thu, Jan 8, 2015 at 9:28 AM, Mike Patterson <
> mike.patterson at uwaterloo.ca> wrote:
>
>> Succinctly, yes, although that provision is a big one.
>>
>> I'm running Bro on two 10 gig interfaces, an Intel X520 and an Endace DAG
>> 9.2X2. Both perform reasonably well. Although my hardware is somewhat
>> underspecced (Dell R710s of differing vintages), I still get tons of useful
>> data.
>>
>> If your next question would be "how should I spec my hardware", that's
>> quite difficult to answer because it depends on a lot. Get the hottest CPUs
>> you can afford, with as many cores. If you're actually sustaining 10+Gb
>> you'll probably want at least 20-30 cores. I'm sustaining 4.5Gb or so on 8
>> 3.7Ghz cores, but Bro reports 10% or so loss. Note that some hardware
>> configurations will limit the number of streams you can feed to Bro, eg my
>> DAG can only produce 16 streams so even if I had it in a 24 core box, I'd
>> only be making use of 2/3 of my CPU.
>>
>> Mike
>>
>> > On Jan 7, 2015, at 5:04 AM, coen bakkers <cbakkers at yahoo.de> wrote:
>> >
>> > Does anyone have experience with higher speed NIC's and Bro? Will it
>> sustain 10Gb speeds or more provide the hardware is spec'd appropriately?
>> >
>> > regards,
>> >
>> > Coen
>> > _______________________________________________
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>> > bro at bro-ids.org
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>>
>>
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>
>
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-- 
Brandon Lattin
Security Analyst
University of Minnesota - University Information Security
Office: 612-626-6672
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