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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

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    1. Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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      Replying to @bagder @PowerDNS_Bert @paulvixie

      Yes, like most of the the other anti-DoH argument, this SPOF argument makes zero sense. It's no more or less of a SPOF than your existing provider.

      1 reply 0 retweets 10 likes
    2. Paul Vixie‏ @paulvixie 31 Oct 2019
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      Replying to @taviso @bagder @PowerDNS_Bert

      thanks for your snap judgement. i have more resilience and fewer possible points of failure than anyone using a so-called "public resolver" with or without DoH will ever have. and: you can too!

      2 replies 1 retweet 11 likes
    3. Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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      Replying to @paulvixie @bagder @PowerDNS_Bert

      I believe you, I think you're very good at what you do. Your users are very lucky to have such reliable infrastructure, but a lot of people are not your users.

      1 reply 0 retweets 4 likes
    4. Paul Vixie‏ @paulvixie 31 Oct 2019
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      Replying to @taviso @bagder @PowerDNS_Bert

      it doesn't take my skill level. running a single RDNS in your home has fewer points of failure than talking to a public resolver. it's not opinion, it's graph theory.

      1 reply 2 retweets 9 likes
    5. Tavis Ormandy‏Verified account @taviso 31 Oct 2019
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      Replying to @paulvixie @bagder @PowerDNS_Bert

      This is not a realistic option for most users, and even if it was, what happens when it goes down?

      2 replies 0 retweets 5 likes
    6. 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
    7. 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
    8. 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
    9. 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
    10. 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
      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? 😂

      12:22 PM - 31 Oct 2019
      • 9 Likes
      • n owen Sandor Szücs FIPSmode Squad Andreas Fleig Sean Heelan larreh Farh Anible Cube
      3 replies 0 retweets 9 likes
        1. New conversation
        2. Arrigo Triulzi‏ @cynicalsecurity 31 Oct 2019
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          Replying to @taviso @paulvixie and

          Definitely not with you on this one Tavis. It fails my "mum" test as DoH has made browsing from home a nightmare for her. When I turned it off and went back to the ISP's it became a breeze again. DoH is the perfect example of an arrogant bunch assuming the world is their net.

          2 replies 3 retweets 11 likes
        3. Arrigo Triulzi‏ @cynicalsecurity 31 Oct 2019
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          Replying to @cynicalsecurity @taviso and

          To answer your deleted tweet: surfing had slowed to treacle. She is off borrowed WiFi on a minor Italian ISP. The ISP's DNS do an excellent job, DoH failed to resolve fast enough. Was convinced her laptop was the issue and about to fork out for a new one.

          2 replies 0 retweets 0 likes
        4. 18 more replies
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        2. 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
        3. 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
        4. 4 more replies
        1. PE0SAT - Jan v Gils‏ @pe0sat 31 Oct 2019
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          Replying to @taviso @paulvixie and

          I hope this will be food for thought: https://youtu.be/QL4bz3QXWEo  ....

          0 replies 0 retweets 0 likes
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