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taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

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Tavis OrmandyVerified account

@taviso

Vulnerability researcher at Google. This is a personal stream, opinions expressed are mine.

California
taviso.decsystem.org
Joined April 2008

Tweets

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    1. Paul Vixie‏ @paulvixie 31 Oct 2019
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      Replying to @taviso @bagder @PowerDNS_Bert

      it's an option for all users. see https://pi-hole.net/  and note that if you put it on a pi-zero you can afford more than one for resiliency. in any case you want your rdns to share fate and topology with your other uplink traffic.

      1 reply 1 retweet 6 likes
    2. Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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      Replying to @paulvixie @bagder @PowerDNS_Bert

      Is your argument that users could just setup a raspberry pi, but they won't be able to disable DoH in the browser? If you're convinced DoH removes so much value, why worry, won't users just disable it?

      1 reply 0 retweets 11 likes
    3. Paul Vixie‏ @paulvixie 31 Oct 2019
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      Replying to @taviso @bagder @PowerDNS_Bert

      that's a topic change. we were discussing single points of failure. centralized dns offers many more points of failure.

      2 replies 1 retweet 4 likes
    4. Bert Hubert  🇪🇺‏ @PowerDNS_Bert 31 Oct 2019
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      Replying to @paulvixie @taviso @bagder

      fwiw, I have given up debating with Tavis for this reason - it is not an actual discussion that could lead to results.

      1 reply 1 retweet 2 likes
    5. Paul Vixie‏ @paulvixie 31 Oct 2019
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      Replying to @PowerDNS_Bert @taviso @bagder

      i try not to give up on anybody unless they seem purposeful (intellectually dishonest) rather than confused (self deception and ignorance). my jury is still out on tavis, though i admit i'm close to the point of ignoring him.

      3 replies 0 retweets 6 likes
    6. Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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      Replying to @paulvixie @PowerDNS_Bert @bagder

      Heh, the benefits of DoH are so obvious, the arguments against it so weak, and the motivations of the opponents so transparent that the writing is on the wall. DoH is a certainty, does that tip the scale? 😂

      3 replies 0 retweets 9 likes
    7. ValdikSS‏ @ValdikSS 31 Oct 2019
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      Replying to @taviso @paulvixie and

      Honestly, I don't see _obvious_ in-browser DoH benefits at all, and I live in a country with censorship, which sometimes is performed by spoofing DNS answers or by redirecting DNS queries to all internet IP addresses to ISP's DNS server. >

      1 reply 0 retweets 0 likes
    8. ValdikSS‏ @ValdikSS 31 Oct 2019
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      Replying to @ValdikSS @taviso and

      I'm not against DNS encryption per se, it's nice, but why not to implement DoH/DoT resolver as e.g. an external program, ship it with Chrome/Firefox to make it work OS-wide, and make it optional then, like Android did?Or why not to make a step further and embrace DoT-enabled NS?>

      1 reply 0 retweets 0 likes
    9. ValdikSS‏ @ValdikSS 31 Oct 2019
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      Replying to @ValdikSS @taviso and

      I was all hands for HTTPS, and DNS encryption is no doubt is a good thing, but its implementation is controversial at best.

      1 reply 0 retweets 0 likes
      Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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      Replying to @ValdikSS @paulvixie and

      It should, and no doubt will be, built-in to system resolvers at some point. We have to make do with the levers we have. The problem with DoT is it's trivial to force people to downgrade to plaintext DNS, so it's pretty reasonable to think snoopers will do that.

      10:01 PM - 31 Oct 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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          Replying to @taviso @ValdikSS and

          The people arguing against it are going to be on the wrong side of history. In five years they'll remember how they argued that plaintext is good for privacy, and it's dangerous not to let the your isp or hotel wifi monitor your activity, they're gonna look real silly. 🤡

          2 replies 0 retweets 0 likes
        3. 5 more replies
        1. ValdikSS‏ @ValdikSS 31 Oct 2019
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          Replying to @taviso @paulvixie and

          Do you imply that the snoopers will use active methods to block DoT resolvers from working? What would prevent them from blacklisting canary domain to downgrade DoH, too?

          0 replies 0 retweets 0 likes
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