[kwlug-disc] CCC talk about DNS(ystem)

Chris Irwin chris at chrisirwin.ca
Thu Apr 9 02:09:00 EDT 2020


On Thu, Apr 09, 2020 at 12:48:23AM +0000, Doug Moen wrote:

>What are the privacy and security implications of running your own DNS 
>server (BIND), as opposed to relying on your ISP's DNS servers?

You may already have a local caching DNS server if you're using a 
consumer router (dnsmasq, likely, instead of BIND). By default, it will 
just forward requests to your ISP, but you can change that in pretty 
much any router. (Whether you can enable/enforce DoT or DoH lookups on 
your router really depends on the firmware, and probably isn't common).

DoT would require you to configure your system to use it (applications 
have no control over it). That is one of several reasons DoH is gaining 
support in browsers, because Firefox can add encrypted DNS lookups into 
the software (and get more inforamtion about the responses as well) 
without "hoping" the system does it (most don't).

-- 
Chris Irwin

email:   chris at chrisirwin.ca
  xmpp:   chris at chrisirwin.ca
   web: https://chrisirwin.ca




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