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Evan Prodromou (evan@cosocial.ca)'s status on Sunday, 26-Jan-2025 02:16:22 JST Evan Prodromou

Why isn't the SSL cert for a server a special kind of DNS record?

In conversation 3 months ago from cosocial.ca permalink
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  :debian: 𝚜𝚎𝚕𝚎𝚊 :opensuse: (selea@social.linux.pizza)'s status on Sunday, 26-Jan-2025 02:17:38 JST :debian: 𝚜𝚎𝚕𝚎𝚊 :opensuse:
  in reply to
  
  @evan
  Rather, why is TLSA records adapted?
  
  In conversation 3 months ago permalink
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  Evan Prodromou (evan@cosocial.ca)'s status on Sunday, 26-Jan-2025 02:35:39 JST Evan Prodromou
  in reply to
  - :debian: 𝚜𝚎𝚕𝚎𝚊 :opensuse:
  @selea I don't understand this sentence.
  
  In conversation 3 months ago permalink
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  Evan Prodromou (evan@cosocial.ca)'s status on Sunday, 26-Jan-2025 02:38:10 JST Evan Prodromou
  in reply to
  - Steve Dinn 🇨🇦
  - Let's Encrypt
  @steve @letsencrypt
  https://letsencrypt.org/docs/challenge-types/#dns-01-challenge
  In conversation 3 months ago permalink
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  1. Domain not in remote thumbnail source whitelist: letsencrypt.org
    
    Challenge Types
    
    When you get a certificate from Let’s Encrypt, our servers validate that you control the domain names in that certificate using “challenges,” as defined by the ACME standard. Most of the time, this validation is handled automatically by your ACME client, but if you need to make some more complex configuration decisions, it’s useful to know more about them. If you’re unsure, go with your client’s defaults or with HTTP-01.
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  Steve Dinn 🇨🇦 (steve@social.dinn.ca)'s status on Sunday, 26-Jan-2025 02:38:11 JST Steve Dinn 🇨🇦
  in reply to
  - Let's Encrypt
  @evan It would make it a pain in the ass to have it automatically renew when it was nearing its expiration. Wait, not everyone uses @letsencrypt ???
  
  In conversation 3 months ago permalink
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  Evan Prodromou (evan@cosocial.ca)'s status on Sunday, 26-Jan-2025 02:38:37 JST Evan Prodromou
  in reply to
  - Erwan 🚄
  @R1Rail That's interesting! I will see if I can give it a try.
  
  In conversation 3 months ago permalink
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  Erwan 🚄 (r1rail@pouet.chapril.org)'s status on Sunday, 26-Jan-2025 02:38:39 JST Erwan 🚄
  in reply to
  
  @evan You can achieve this with the TLSA RR (and then you must use DNSSEC to guarantee - up to a certain kind of certainty - that the genuine DNS answer is returned)
  
  In conversation 3 months ago permalink
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  :debian: 𝚜𝚎𝚕𝚎𝚊 :opensuse: (selea@social.linux.pizza)'s status on Sunday, 26-Jan-2025 03:30:18 JST :debian: 𝚜𝚎𝚕𝚎𝚊 :opensuse:
  in reply to
  
  @evan
  TLSA (DANE) - RTC 6698.
  Storing TLS-cert in DNS is a bad idea and kinda defeats the purpose.
  However, the idea with TLSA-record is that owners of the domain can verify the "visitor" that the certificate is valid - DNSSEC required ofcourse.
  Postfix already have support for it called DANE, and if I remember correctly - about 0.3% of SMTP-servers online actually implemented it (2019 data)
  
  In conversation 3 months ago permalink

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