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Stéphane Bortzmeyer
Stéphane Bortzmeyer
@bortzmeyer@mastodon.gougere.fr  ·  activity timestamp 6 months ago
@ProjectAinita Do you know how "Iran-connectivity-only" during shutdowns work with the DNS? I assume people can still resolve names under .ir, but how? Mandatory special configuration in the resolvers to talk directly to authoritative name servers?
(For other people: I'm not interested in general considerations but in what Iran actually does.)
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ProjectAinita
ProjectAinita
@ProjectAinita@infosec.exchange replied  ·  activity timestamp 6 months ago
@bortzmeyer The TIC (Telecommunication Infrastructure Company) instructed ISPs and data centers to configure their DNS resolvers to TIC-provided IPs that remained whitelisted and connected to the Internet:
🔹 217.218.127.127
🔹 217.218.155.155

Typically, admins use public resolvers like Google or Cloudflare. But when international traffic is blocked, these become unreachable - breaking even local DNS resolution and disrupting domestic connectivity.

#IranInternetStatus #keepiton

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