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Re: Open Resolver Problems
From: Jay Ashworth <jra () baylink com>
Date: Mon, 1 Apr 2013 14:19:16 -0400 (EDT)

----- Original Message -----
From: "Roland Dobbins" <rdobbins () arbor net>

On Apr 1, 2013, at 11:18 PM, Patrick W. Gilmore wrote:
Of course, since users shouldn't be using off-net name servers
anyway, this isn't really a problem! :)

;>

It's easy enough to construct ACLs to restrict the broadband consumer
access networks from doing so. Additional egress filtering would catch
any reflected attacks, per your previous comments.

So, how would Patrick's caveat affect me, whose recursive resolver *is 
on my Linux laptop*?  Would not that recursor be making queries he 
advocates blocking?

Or don't I remember DNS well enough?

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra () baylink com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com         2000 Land Rover DII
St Petersburg FL USA               #natog                      +1 727 647 1274


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