[ratelimits] How to validate the use of RRL?

[Feng He]

于 2012-11-7 14:27, Vernon Schryver 写道:
>> From: Feng He <fenghe at nsbeta.info>
>
>>        rate-limit {
>>            responses-per-second 25;
>>            window 5;
>>        };
>
>> for i in `seq 0 9`;do dig @localhost +short +tries=1 +time=1 dnsbed.com a;done
>
> I think that shell line will send 10 DNS requests, but the RRL limit
> is set to 25 responses/second.  I would try
>
>     for i in `seq 0 51`;do ...
>
> I would also enable and examine the BIND logs.
>
>
> Vernon Schryver    vjs at rhyolite.com
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>


I followed the guide in their official site:
http://www.redbarn.org/dns/ratelimits

BTW,what's the meaning of the two options responses-per-second  and window?

Thanks.