nanog mailing list archives

Re: Comcast and DGA like behavior


From: Paul Ferguson <fergdawgster () mykolab com>
Date: Wed, 25 Apr 2018 08:40:19 -0700



On Apr 25, 2018, at 8:34 AM, Christopher Morrow <morrowc.lists () gmail com> wrote:

On Wed, Apr 25, 2018 at 11:28 AM, J. Oquendo <joquendo () e-fensive net> wrote:
Anyone else seeing DGA (1) like behavior for Comcast based
customers? If so, is there any information on it? Seeing a
lot of traffic to bogus domains all synonymous with their
networks.


don't they have a anti-botnet-automagic-walled-garden thing that's
supposed to stop this?
(also, example request RRs?)


If a residential broadband consumer’s computer gets pwned, there’s nothing really stopping a criminal from registering 
any sort of domain/hostname and pointing a DNS A record at it. In fact, that’s pretty routine. But the aspect that it 
could be a DGA is a bit more difficult insofar as planning and logistics, but not improbable, methinks.

- ferg

—
Paul Ferguson
ICEBRG.io
Seattle, Washington, USA



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