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  Encrypted DNS + NTP = Deadlock

  • 37 users
  • cyounkins.medium.com
  • テクノロジー
  • 2023/01/02

  Photo by Uzoma Ozurumba, CC BY-SA 4.0, no changesI’m generally a big fan of encrypted DNS for the security it provides with negligible performance impact. But I recently found out the hard way that DNS over TLS/HTTPS can deadlock with Network Time Protocol (NTP) on embedded devices without a battery-backed real-time clock. Many low-cost routers lack a battery for keeping time during power loss. Af

  • DNS
  • TLS
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