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DNS Encryption and Its Controversies

sylph01
December 19, 2020

DNS Encryption and Its Controversies

DNS暗号化とその論点 @ DNS温泉番外編 in 大阪

sylph01

December 19, 2020
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  1. DoT vs DoH • DoT͸port 853Λ࢖͏ɺDoH͸HTTPSͱಉ༷port 443Λ࢖͏ • DoT͸port 853ͷϒϩοΩϯάͰ๦֐Մೳ

    • DoH͸port 443Λར༻͢ΔͷͰ௨ৗͷHTTPSϦΫΤετͱ۠ผ Ͱ͖ͳ͍ • ҰํͰΑ͘஌ΒΕ͍ͯΔDoHରԠαʔόʔ΁ͷIPϒϩοΩ ϯάΛߦ͑͹๦֐Մೳ
  2. ·ͱΊ • DNS queryͷ౪ௌ͕ࠔΔͷͰDNS҉߸Խ͕ੜ·ΕͨΑ • DNS over TLS (DoT), DNS

    Queries over HTTPS (DoH)ͱ͍͏ͷ͕ओͳ ख๏ͩΑ • ҉߸Խ͞ΕΔͱsysadminʹ౎߹͕ѱ͍ɺ͚Ͳ࢓༷ͩΑ • ৴༻ͬͯԿͩΖ͏