nanog mailing list archives

Re: [EXTERNAL] Charter DNS servers returning malware filtered IP addresses


From: Owen DeLong via NANOG <nanog () nanog org>
Date: Fri, 27 Oct 2023 15:56:30 -0700



On Oct 27, 2023, at 14:20, John Levine <johnl () iecc com> wrote:

It appears that Bryan Fields <Bryan () bryanfields net> said:
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On 10/27/23 7:49 AM, John Levine wrote:
But for obvious good reasons,
the vast majority of their customers don't

I'd argue that as a service provider deliberately messing with DNS is an 
obvious bad thing.  They're there to deliver packets.

For a network feeding a data center, sure. For a network like
Charter's which is feeding unsophisticated nontechnical users, they
need all the messing they can get.

If you're one of the small minority of retail users that knows enough
about the technology to pick your own resolver, go ahead.  But it's
a reasonable default to keep malware out of Grandma's iPad.

R's,
John

If it’s such a reasonable default, why don’t any of the public resolvers (e.g. 1.1.1.1, 8.8.8.8, 9.9.9.9, etc.) do so?

DNS isn’t the right place to attack this, IMHO.

Owen


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