about DNS RRL

[Barry Margolin]

In article <mailman.424.1350461867.11945.bind-users at lists.isc.org>,
 pangj <pangj at riseup.net> wrote:

> I have read the document of redbarn RRL for BIND and this NSD RRL:
> https://www.nlnetlabs.nl/blog/2012/10/11/nsd-ratelimit/
> 
> I have a question that, since the DDoS to DNS are coming from spoofed 
> IPs. But RRL is working based on source IP. So how can it stop the real 
> life attack?

You're thinking that the rate limit is intended to protect YOUR server. 
It's actually to prevent your server from being used as a reflector to 
attack some OTHER server.  The spoofed addresses all point to that 
server.

-- 
Barry Margolin
Arlington, MA