Re: [Add] Home routers with their own DNS servers

[Rob Sayre <[e-mail]>]

It looks like it uses some local telemetry to decide whether to use the
ISP's DNS servers.

I've attached a screenshot of its management application.

thanks,
Rob


On Sun, Aug 18, 2019 at 10:24 AM Rob Sayre <[e-mail]> wrote:

> Hi,
>
> I was reading the paper ekr recommended:
>
> <
> https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-liu_0.pdf
> >
>
> and I noticed they provide a service here:
>
> <http://whatismyresolver.com/>
>
> I ran this in Firefox with DoH. As expected, I got a result that indicated
> my resolver was Cloudflare.
>
> In other browsers, I found that my resolver was run by Google[1]. I was a
> little puzzled at first, since Google is not my ISP. But, then I remembered
> that my router is a Google Wifi product. I guess it uses its own DNS
> servers sometimes. I don't think it always does this, because I do
> occasionally see DNS redirect pages[2] from my ISP for NXDOMAIN responses,
> although I don't right now. Another possibility is that my ISP sometimes
> intercepts this traffic.
>
> I only bring this up to point out how fluid the terms used on this list
> can be. I guess I'm the network administrator of my house, and it appears
> that I've purchased a router that uses Google's DNS servers by default
> (fine with me). I hope my router is using DoH or DoT. If it's not, it might
> get updated to do so at some point--its software self updates all the time.
>
> thanks,
> Rob
>
> [1] https://www.whois.com/whois/172.253.0.2
> [2] https://tools.ietf.org/html/draft-livingood-dns-redirect-03
>