{"id":476910,"date":"2023-08-09T09:05:02","date_gmt":"2023-08-09T09:05:02","guid":{"rendered":""},"modified":"2023-09-05T11:13:39","modified_gmt":"2023-09-05T11:13:39","slug":"dns-over-https-doh","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-over-https-doh\/","title":{"rendered":"DNS qua HTTPS (DoH)"},"content":{"rendered":"

DNS qua HTTPS (DoH) l\u00e0 giao th\u1ee9c gi\u00fap t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a c\u00e1c y\u00eau c\u1ea7u DNS (H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n) b\u1eb1ng c\u00e1ch m\u00e3 h\u00f3a ch\u00fang b\u1eb1ng HTTPS (B\u1ea3o m\u1eadt giao th\u1ee9c truy\u1ec1n si\u00eau v\u0103n b\u1ea3n). Giao th\u1ee9c n\u00e0y cho ph\u00e9p kh\u00e1ch h\u00e0ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u1ed9t c\u00e1ch an to\u00e0n, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c b\u00ean th\u1ee9 ba kh\u00f4ng th\u1ec3 d\u1ec5 d\u00e0ng ch\u1eb7n ho\u1eb7c gi\u1ea3 m\u1ea1o c\u00e1c truy v\u1ea5n v\u00e0 ph\u1ea3n h\u1ed3i DNS. DNS qua HTTPS l\u00e0 m\u1ed9t ti\u1ebfn b\u1ed9 quan tr\u1ecdng trong b\u1ea3o m\u1eadt Internet v\u00e0 n\u00f3 \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn nh\u1edd kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS v\u00e0 nghe l\u00e9n.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a DNS qua HTTPS (DoH) v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n

Kh\u00e1i ni\u1ec7m m\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng DNS \u0111\u00e3 xu\u1ea5t hi\u1ec7n \u0111\u01b0\u1ee3c m\u1ed9t th\u1eddi gian, nh\u01b0ng DNS qua HTTPS \u0111\u00e3 thu h\u00fat \u0111\u01b0\u1ee3c s\u1ef1 ch\u00fa \u00fd \u0111\u00e1ng k\u1ec3 khi \u0111\u01b0\u1ee3c Patrick McManus c\u1ee7a Mozilla \u0111\u1ec1 xu\u1ea5t l\u1ea7n \u0111\u1ea7u ti\u00ean v\u00e0o th\u00e1ng 10 n\u0103m 2017. B\u1ea3n d\u1ef1 th\u1ea3o ban \u0111\u1ea7u c\u1ee7a giao th\u1ee9c DoH \u0111\u00e3 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n tr\u00ean Internet Engineering Task Force ( IETF) c\u1ee7a Patrick McManus v\u00e0 nh\u1eefng ng\u01b0\u1eddi \u0111\u00f3ng g\u00f3p kh\u00e1c. K\u1ec3 t\u1eeb \u0111\u00f3, giao th\u1ee9c n\u00e0y \u0111\u00e3 tr\u1ea3i qua nhi\u1ec1u l\u1ea7n l\u1eb7p l\u1ea1i v\u00e0 c\u1ea3i ti\u1ebfn, d\u1eabn \u0111\u1ebfn s\u1ef1 ch\u1ea5p nh\u1eadn v\u00e0 \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 DNS qua HTTPS (DoH)<\/h2>\n

DNS qua HTTPS cung c\u1ea5p m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 ri\u00eang t\u01b0 \u0111\u1ec3 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng kh\u1ea3 n\u0103ng m\u00e3 h\u00f3a c\u1ee7a HTTPS. C\u00e1c truy v\u1ea5n DNS truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1eedi \u1edf d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n t\u00fay, khi\u1ebfn ch\u00fang d\u1ec5 b\u1ecb ch\u1eb7n v\u00e0 thao t\u00fang. V\u1edbi DoH, c\u00e1c truy v\u1ea5n DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 truy\u1ec1n qua c\u00e1c k\u00eanh b\u1ea3o m\u1eadt, mang l\u1ea1i m\u1ed9t s\u1ed1 l\u1ee3i \u00edch:<\/p>\n

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    S\u1ef1 ri\u00eang t\u01b0:<\/strong> DNS qua HTTPS \u1ea9n n\u1ed9i dung y\u00eau c\u1ea7u DNS, ng\u0103n ISP, qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng ho\u1eb7c t\u00e1c nh\u00e2n \u0111\u1ed9c h\u1ea1i gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng internet c\u1ee7a ng\u01b0\u1eddi d\u00f9ng d\u1ef1a tr\u00ean l\u01b0u l\u01b0\u1ee3ng DNS c\u1ee7a h\u1ecd.<\/p>\n<\/li>\n

  2. \n

    B\u1ea3o v\u1ec7:<\/strong> M\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng DNS b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean DNS, ch\u1eb3ng h\u1ea1n nh\u01b0 gi\u1ea3 m\u1ea1o DNS v\u00e0 t\u1ea5n c\u00f4ng trung gian, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i h\u1ee3p ph\u00e1p t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 DNS c\u00f3 th\u1ea9m quy\u1ec1n.<\/p>\n<\/li>\n

  3. \n

    V\u01b0\u1ee3t qua ki\u1ec3m duy\u1ec7t:<\/strong> DNS qua HTTPS c\u00f3 th\u1ec3 gi\u00fap v\u01b0\u1ee3t qua qu\u00e1 tr\u00ecnh l\u1ecdc v\u00e0 ki\u1ec3m duy\u1ec7t DNS do ch\u00ednh ph\u1ee7 ho\u1eb7c ISP nh\u1ea5t \u0111\u1ecbnh \u00e1p \u0111\u1eb7t, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 b\u1ecb ch\u1eb7n.<\/p>\n<\/li>\n

  4. \n

    C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t:<\/strong> B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng HTTPS, DNS qua HTTPS t\u1eadn d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3 v\u00e0 t\u1eadn d\u1ee5ng c\u00e1c l\u1ee3i \u00edch t\u1eeb vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 li\u00ean l\u1ea1c tr\u00ean web an to\u00e0n, c\u00f3 kh\u1ea3 n\u0103ng mang l\u1ea1i th\u1eddi gian ph\u00e2n gi\u1ea3i DNS nhanh h\u01a1n.<\/p>\n<\/li>\n<\/ol>\n

    C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a DNS qua HTTPS (DoH) \u2013 C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n

    DNS qua HTTPS ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch g\u00f3i c\u00e1c truy v\u1ea5n v\u00e0 ph\u1ea3n h\u1ed3i DNS trong c\u00e1c g\u00f3i HTTPS, sau \u0111\u00f3 g\u1eedi \u0111\u1ebfn v\u00e0 nh\u1eadn t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 DoH chuy\u00ean d\u1ee5ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 gi\u1ea3i th\u00edch t\u1eebng b\u01b0\u1edbc v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a DNS qua HTTPS:<\/p>\n

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      Y\u00eau c\u1ea7u kh\u00e1ch h\u00e0ng:<\/strong> Khi thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1eaft \u0111\u1ea7u y\u00eau c\u1ea7u ph\u00e2n gi\u1ea3i DNS, m\u00e1y kh\u00e1ch DNS tr\u00ean thi\u1ebft b\u1ecb s\u1ebd g\u1eedi truy v\u1ea5n \u0111\u1ebfn tr\u00ecnh ph\u00e2n gi\u1ea3i DNS t\u01b0\u01a1ng th\u00edch v\u1edbi DoH, th\u01b0\u1eddng do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DoH v\u1eadn h\u00e0nh.<\/p>\n<\/li>\n

    2. \n

      M\u00e3 h\u00f3a truy v\u1ea5n DNS:<\/strong> M\u00e1y kh\u00e1ch DNS m\u00e3 h\u00f3a truy v\u1ea5n DNS b\u1eb1ng HTTPS, bi\u1ebfn n\u00f3 th\u00e0nh y\u00eau c\u1ea7u HTTPS GET ho\u1eb7c POST m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n

    3. \n

      Truy\u1ec1n t\u1ea3i HTTP(S):<\/strong> Truy v\u1ea5n DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a sau \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1eedi qua c\u1ed5ng HTTPS ti\u00eau chu\u1ea9n (443) \u0111\u1ebfn m\u00e1y ch\u1ee7 DoH.<\/p>\n<\/li>\n

    4. \n

      X\u1eed l\u00fd m\u00e1y ch\u1ee7 DoH:<\/strong> M\u00e1y ch\u1ee7 DoH nh\u1eadn truy v\u1ea5n DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, gi\u1ea3i m\u00e3 n\u00f3 v\u00e0 chuy\u1ec3n ti\u1ebfp truy v\u1ea5n DNS \u0111\u1ebfn tr\u00ecnh ph\u00e2n gi\u1ea3i DNS th\u00edch h\u1ee3p \u0111\u1ec3 l\u1ea5y \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/p>\n<\/li>\n

    5. \n

      \u0110\u1ed9 ph\u00e2n gi\u1ea3i DNS:<\/strong> Tr\u00ecnh ph\u00e2n gi\u1ea3i DNS x\u1eed l\u00fd truy v\u1ea5n, truy xu\u1ea5t \u0111\u1ecba ch\u1ec9 IP v\u00e0 g\u1eedi ph\u1ea3n h\u1ed3i tr\u1edf l\u1ea1i m\u00e1y ch\u1ee7 DoH.<\/p>\n<\/li>\n

    6. \n

      M\u00e3 h\u00f3a ph\u1ea3n h\u1ed3i DNS:<\/strong> M\u00e1y ch\u1ee7 DoH m\u00e3 h\u00f3a ph\u1ea3n h\u1ed3i DNS b\u1eb1ng HTTPS.<\/p>\n<\/li>\n

    7. \n

      Ph\u1ea3n h\u1ed3i cho kh\u00e1ch h\u00e0ng:<\/strong> Ph\u1ea3n h\u1ed3i DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi l\u1ea1i cho m\u00e1y kh\u00e1ch qua k\u1ebft n\u1ed1i HTTPS.<\/p>\n<\/li>\n

    8. \n

      Gi\u1ea3i m\u00e3 \u1ee9ng d\u1ee5ng kh\u00e1ch:<\/strong> M\u00e1y kh\u00e1ch gi\u1ea3i m\u00e3 ph\u1ea3n h\u1ed3i DNS, l\u1ea5y \u0111\u1ecba ch\u1ec9 IP v\u00e0 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 web mong mu\u1ed1n.<\/p>\n<\/li>\n<\/ol>\n

      Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c li\u00ean l\u1ea1c DNS gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 DoH v\u1eabn \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 b\u1ea3o m\u1eadt, b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

      Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a DNS qua HTTPS (DoH)<\/h2>\n

      DNS qua HTTPS cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh gi\u00fap n\u00f3 kh\u00e1c bi\u1ec7t v\u1edbi DNS truy\u1ec1n th\u1ed1ng v\u00e0 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a DNS kh\u00e1c:<\/p>\n

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        M\u00e3 h\u00f3a \u0111\u1ea7u cu\u1ed1i:<\/strong> DNS qua HTTPS m\u00e3 h\u00f3a c\u00e1c truy v\u1ea5n DNS t\u1eeb m\u00e1y kh\u00e1ch \u0111\u1ebfn m\u00e1y ch\u1ee7 DoH v\u00e0 c\u00e1c ph\u1ea3n h\u1ed3i c\u0169ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a t\u1eeb m\u00e1y ch\u1ee7 DoH \u0111\u1ebfn m\u00e1y kh\u00e1ch. M\u00e3 h\u00f3a \u0111\u1ea7u cu\u1ed1i n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 DoH m\u1edbi c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c truy v\u1ea5n v\u00e0 ph\u1ea3n h\u1ed3i DNS.<\/p>\n<\/li>\n

      2. \n

        T\u00ednh di \u0111\u1ed9ng:<\/strong> DNS qua HTTPS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o h\u1ed7 tr\u1ee3 HTTPS, gi\u00fap n\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u n\u1ec1n t\u1ea3ng v\u00e0 h\u1ec7 \u0111i\u1ec1u h\u00e0nh.<\/p>\n<\/li>\n

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        B\u1ea3o m\u1eadt ch\u1ed1ng ch\u1eb7n:<\/strong> B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng HTTPS, DoH b\u1ea3o v\u1ec7 kh\u1ecfi vi\u1ec7c nghe l\u00e9n v\u00e0 gi\u1ea3 m\u1ea1o c\u00e1c y\u00eau c\u1ea7u DNS, b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean DNS kh\u00e1c nhau.<\/p>\n<\/li>\n

      4. \n

        T\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0:<\/strong> DNS qua HTTPS che gi\u1ea5u c\u00e1c truy v\u1ea5n DNS c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, ng\u0103n ISP v\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c kh\u00e1c gi\u00e1m s\u00e1t v\u00e0 thu th\u1eadp d\u1eef li\u1ec7u v\u1ec1 ho\u1ea1t \u0111\u1ed9ng Internet c\u1ee7a h\u1ecd.<\/p>\n<\/li>\n

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        D\u1ec5 th\u1ef1c hi\u1ec7n:<\/strong> V\u00ec DoH s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng HTTPS hi\u1ec7n c\u00f3 n\u00ean vi\u1ec7c tri\u1ec3n khai DNS qua HTTPS t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n \u0111\u1ed1i v\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t web v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u00e3 h\u1ed7 tr\u1ee3 HTTPS.<\/p>\n<\/li>\n<\/ol>\n

        C\u00e1c lo\u1ea1i DNS qua HTTPS (DoH)<\/h2>\n

        Ch\u1ee7 y\u1ebfu c\u00f3 hai lo\u1ea1i tri\u1ec3n khai DNS qua HTTPS:<\/p>\n

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          Ng\u01b0\u1eddi gi\u1ea3i quy\u1ebft DoH c\u00f4ng khai:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c m\u00e1y ch\u1ee7 DoH \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh b\u1edfi nhi\u1ec1u t\u1ed5 ch\u1ee9c v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 kh\u00e1c nhau cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i DoH cho c\u00f4ng ch\u00fang. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u1ecbnh c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh \u0111\u1ec3 s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp c\u00e1c tr\u00ecnh ph\u00e2n gi\u1ea3i DoH c\u00f4ng khai n\u00e0y.<\/p>\n<\/li>\n

        2. \n

          Ng\u01b0\u1eddi gi\u1ea3i quy\u1ebft DoH ri\u00eang t\u01b0:<\/strong> Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, tr\u00ecnh ph\u00e2n gi\u1ea3i DoH ri\u00eang \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c c\u1ee5 th\u1ec3, cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS an to\u00e0n cho ng\u01b0\u1eddi d\u00f9ng c\u1ee7a h\u1ecd m\u00e0 kh\u00f4ng c\u1ea7n d\u1ef1a v\u00e0o tr\u00ecnh ph\u00e2n gi\u1ea3i DoH c\u00f4ng khai. Tr\u00ecnh ph\u00e2n gi\u1ea3i DoH ri\u00eang c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS n\u1ed9i b\u1ed9 trong m\u1ed9t t\u1ed5 ch\u1ee9c.<\/p>\n<\/li>\n<\/ol>\n

          C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng DNS qua HTTPS (DoH), c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n

          S\u1eed d\u1ee5ng DNS qua HTTPS (DoH)<\/h3>\n

          C\u00f3 m\u1ed9t s\u1ed1 c\u00e1ch ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng DNS qua HTTPS:<\/p>\n

            \n
          1. \n

            Tr\u00ecnh duy\u1ec7t web:<\/strong> Nhi\u1ec1u tr\u00ecnh duy\u1ec7t web hi\u1ec7n \u0111\u1ea1i, ch\u1eb3ng h\u1ea1n nh\u01b0 Mozilla Firefox v\u00e0 Google Chrome, c\u00f3 h\u1ed7 tr\u1ee3 t\u00edch h\u1ee3p cho DNS qua HTTPS. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 b\u1eadt t\u00ednh n\u0103ng n\u00e0y trong c\u00e0i \u0111\u1eb7t tr\u00ecnh duy\u1ec7t c\u1ee7a m\u00ecnh \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb t\u00ednh b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 n\u00e2ng cao.<\/p>\n<\/li>\n

          2. \n

            C\u1ea5u h\u00ecnh h\u1ec7 \u0111i\u1ec1u h\u00e0nh:<\/strong> M\u1ed9t s\u1ed1 h\u1ec7 \u0111i\u1ec1u h\u00e0nh cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng k\u00edch ho\u1ea1t DNS qua HTTPS tr\u00ean to\u00e0n h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c truy v\u1ea5n DNS t\u1eeb c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau \u0111\u1ec1u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a.<\/p>\n<\/li>\n

          3. \n

            \u1ee8ng d\u1ee5ng b\u00ean th\u1ee9 ba:<\/strong> Ng\u01b0\u1eddi d\u00f9ng c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng DNS c\u1ee7a b\u00ean th\u1ee9 ba qua m\u00e1y kh\u00e1ch HTTPS ho\u1eb7c \u1ee9ng d\u1ee5ng cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS qua HTTPS \u0111\u1ed9c l\u1eadp v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh ho\u1eb7c tr\u00ecnh duy\u1ec7t web.<\/p>\n<\/li>\n<\/ol>\n

            V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h3>\n

            M\u1eb7c d\u00f9 DNS qua HTTPS mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch nh\u01b0ng c\u00f3 m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai n\u00f3:<\/p>\n

              \n
            1. \n

              Kh\u00f4ng t\u01b0\u01a1ng th\u00edch:<\/strong> Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh ph\u00e2n gi\u1ea3i DNS ho\u1eb7c m\u00e1y ch\u1ee7 DNS \u0111\u1ec1u h\u1ed7 tr\u1ee3 DoH, d\u1eabn \u0111\u1ebfn c\u00e1c s\u1ef1 c\u1ed1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch ti\u1ec1m \u1ea9n. Tuy nhi\u00ean, vi\u1ec7c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i DoH \u0111ang khuy\u1ebfn kh\u00edch c\u00e1c nh\u00e0 khai th\u00e1c tr\u00ecnh ph\u00e2n gi\u1ea3i DNS th\u00eam h\u1ed7 tr\u1ee3 cho giao th\u1ee9c n\u00e0y.<\/p>\n<\/li>\n

            2. \n

              M\u1ed1i quan t\u00e2m v\u1ec1 an ninh:<\/strong> M\u1eb7c d\u00f9 DNS qua HTTPS gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c nhi\u1ec1u v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng r\u1ee7i ro m\u1edbi n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c tri\u1ec3n khai \u0111\u00fang c\u00e1ch. Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i tin t\u01b0\u1edfng v\u00e0o tr\u00ecnh ph\u00e2n gi\u1ea3i DoH m\u00e0 h\u1ecd \u0111ang s\u1eed d\u1ee5ng v\u00ec n\u00f3 s\u1ebd tr\u1edf th\u00e0nh trung gian m\u1edbi cho c\u00e1c truy v\u1ea5n DNS. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DoH c\u00f3 uy t\u00edn v\u00e0 \u0111\u00e1ng tin c\u1eady l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro ti\u1ec1m \u1ea9n.<\/p>\n<\/li>\n

            3. \n

              L\u1ecdc DNS v\u00e0 ki\u1ec3m so\u00e1t c\u1ee7a ph\u1ee5 huynh:<\/strong> DNS qua HTTPS c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 c\u01a1 ch\u1ebf l\u1ecdc DNS v\u00e0 ki\u1ec3m so\u00e1t c\u1ee7a ph\u1ee5 huynh, c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y lo ng\u1ea1i v\u1ec1 vi\u1ec7c ki\u1ec3m so\u00e1t n\u1ed9i dung v\u00e0 quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c c\u00f3 h\u1ea1i.<\/p>\n<\/li>\n

            4. \n

              Qu\u1ea3n l\u00fd m\u1ea1ng c\u1ee5c b\u1ed9:<\/strong> DNS qua HTTPS c\u00f3 th\u1ec3 \u0111\u1eb7t ra th\u00e1ch th\u1ee9c cho qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng d\u1ef1a v\u00e0o DNS \u0111\u1ec3 qu\u1ea3n l\u00fd m\u1ea1ng c\u1ee5c b\u1ed9. Vi\u1ec7c tri\u1ec3n khai DoH tr\u00ean quy m\u00f4 l\u1edbn \u0111\u00f2i h\u1ecfi ph\u1ea3i l\u1eadp k\u1ebf ho\u1ea1ch v\u00e0 xem x\u00e9t c\u1ea9n th\u1eadn c\u00e1c y\u00eau c\u1ea7u qu\u1ea3n l\u00fd m\u1ea1ng c\u1ee5c b\u1ed9.<\/p>\n<\/li>\n<\/ol>\n

              \u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, c\u00e1c t\u1ed5 ch\u1ee9c v\u00e0 c\u00e1 nh\u00e2n n\u00ean \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn vi\u1ec7c tri\u1ec3n khai DNS qua HTTPS, ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DoH \u0111\u00e1ng tin c\u1eady v\u00e0 tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt th\u00edch h\u1ee3p.<\/p>\n

              C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n

              D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh DNS qua HTTPS (DoH) v\u1edbi c\u00e1c c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt DNS t\u01b0\u01a1ng t\u1ef1:<\/p>\n\n\n\n\n\n\n\n\n
              C\u01a1 ch\u1ebf<\/th>\n\u0110\u1eb7c tr\u01b0ng<\/th>\nSo s\u00e1nh v\u1edbi DoH<\/th>\n<\/tr>\n<\/thead>\n
              DNS qua TLS (DoT)<\/td>\nM\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng DNS b\u1eb1ng TLS (B\u1ea3o m\u1eadt l\u1edbp truy\u1ec1n t\u1ea3i)<\/td>\nC\u1ea3 DoT v\u00e0 DoH \u0111\u1ec1u cung c\u1ea5p m\u00e3 h\u00f3a cho l\u01b0u l\u01b0\u1ee3ng DNS, nh\u01b0ng DoH s\u1eed d\u1ee5ng HTTPS, t\u1eadn d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng web hi\u1ec7n c\u00f3 v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i h\u01a1n.<\/td>\n<\/tr>\n
              DNSCrypt<\/td>\nB\u1ea3o m\u1eadt c\u00e1c truy v\u1ea5n DNS b\u1eb1ng giao th\u1ee9c m\u00e3 h\u00f3a<\/td>\nDNSCrypt l\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a DNS kh\u00e1c, nh\u01b0ng DoH \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n do s\u1eed d\u1ee5ng HTTPS, khi\u1ebfn n\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t web v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u00e3 h\u1ed7 tr\u1ee3 HTTPS.<\/td>\n<\/tr>\n
              VPN (M\u1ea1ng ri\u00eang \u1ea3o)<\/td>\n\u0110\u1ecbnh tuy\u1ebfn t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp internet th\u00f4ng qua m\u1ed9t m\u1ea1ng ri\u00eang an to\u00e0n<\/td>\nM\u1eb7c d\u00f9 VPN c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt tr\u1ef1c tuy\u1ebfn t\u1ed5ng th\u1ec3 nh\u01b0ng ch\u00fang kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 b\u1ea3o m\u1eadt c\u00e1c y\u00eau c\u1ea7u DNS. DoH cung c\u1ea5p m\u00e3 h\u00f3a t\u1eadp trung \u0111\u1ec3 ph\u00e2n gi\u1ea3i DNS m\u00e0 kh\u00f4ng \u0111\u1ecbnh tuy\u1ebfn t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp th\u00f4ng qua m\u1ed9t m\u1ea1ng ri\u00eang.<\/td>\n<\/tr>\n
              DNSSEC (Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt DNS)<\/td>\nTh\u00eam ch\u1eef k\u00fd s\u1ed1 v\u00e0o d\u1eef li\u1ec7u DNS<\/td>\nDNSSEC ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o vi\u1ec7c \u0111\u1ea3m b\u1ea3o t\u00ednh x\u00e1c th\u1ef1c v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u DNS nh\u01b0ng kh\u00f4ng m\u00e3 h\u00f3a c\u00e1c truy v\u1ea5n DNS. DNSSEC v\u00e0 DoH c\u00f3 th\u1ec3 b\u1ed5 sung cho nhau, cung c\u1ea5p ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt DNS to\u00e0n di\u1ec7n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              C\u00e1c quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn DNS over HTTPS (DoH)<\/h2>\n

              DNS qua HTTPS c\u00f3 th\u1ec3 v\u1eabn l\u00e0 m\u1ed9t ti\u1ebfn b\u1ed9 \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c b\u1ea3o m\u1eadt th\u00f4ng tin li\u00ean l\u1ea1c DNS v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng tr\u00ean internet. Khi vi\u1ec7c \u00e1p d\u1ee5ng n\u00f3 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i nh\u1eefng ph\u00e1t tri\u1ec3n v\u00e0 c\u00f4ng ngh\u1ec7 sau li\u00ean quan \u0111\u1ebfn DNS qua HTTPS:<\/p>\n

                \n
              1. \n

                H\u1ed7 tr\u1ee3 t\u0103ng c\u01b0\u1eddng:<\/strong> Nhi\u1ec1u tr\u00ecnh ph\u00e2n gi\u1ea3i DNS v\u00e0 m\u00e1y ch\u1ee7 DNS d\u1ef1 ki\u1ebfn s\u1ebd b\u1ed5 sung h\u1ed7 tr\u1ee3 cho DoH, bi\u1ebfn n\u00f3 th\u00e0nh m\u1ed9t t\u00ednh n\u0103ng ti\u00eau chu\u1ea9n \u0111\u1ec3 ph\u00e2n gi\u1ea3i DNS an to\u00e0n.<\/p>\n<\/li>\n

              2. \n

                SNI \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a (Ch\u1ec9 \u0111\u1ecbnh t\u00ean m\u00e1y ch\u1ee7):<\/strong> SNI \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 b\u1ed5 sung gi\u00fap \u1ea9n t\u00ean m\u00e1y ch\u1ee7 c\u1ee7a trang web m\u00e0 ng\u01b0\u1eddi d\u00f9ng \u0111ang c\u1ed1 truy c\u1eadp. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi DoH \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng h\u01a1n n\u1eefa quy\u1ec1n ri\u00eang t\u01b0.<\/p>\n<\/li>\n

              3. \n

                DNS qua HTTPS trong thi\u1ebft b\u1ecb IoT:<\/strong> Khi Internet of Things (IoT) ti\u1ebfp t\u1ee5c m\u1edf r\u1ed9ng, vi\u1ec7c tri\u1ec3n khai DNS qua HTTPS trong c\u00e1c thi\u1ebft b\u1ecb IoT c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh b\u1ea3o m\u1eadt v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u1ec1m \u1ea9n khai th\u00e1c l\u1ed7 h\u1ed5ng DNS.<\/p>\n<\/li>\n

              4. \n

                Ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 quy \u0111\u1ecbnh:<\/strong> V\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng DoH ng\u00e0y c\u00e0ng t\u0103ng, c\u00e1c n\u1ed7 l\u1ef1c ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c quy \u0111\u1ecbnh xung quanh vi\u1ec7c tri\u1ec3n khai n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a ra \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c s\u1eed d\u1ee5ng nh\u1ea5t qu\u00e1n v\u00e0 an to\u00e0n.<\/p>\n<\/li>\n<\/ol>\n

                C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi DNS qua HTTPS (DoH)<\/h2>\n

                M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u0103ng c\u01b0\u1eddng tri\u1ec3n khai DNS qua HTTPS theo c\u00e1c c\u00e1ch sau:<\/p>\n

                  \n
                1. \n

                  B\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 t\u0103ng t\u1ed1c:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u01b0u tr\u1eef c\u00e1c ph\u1ea3n h\u1ed3i DNS thu \u0111\u01b0\u1ee3c th\u00f4ng qua DoH. B\u1ed9 nh\u1edb \u0111\u1ec7m n\u00e0y c\u00f3 th\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS ti\u1ebfp theo, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 t\u1ed5ng th\u1ec3 v\u00e0 c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n

                2. \n

                  C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i DNS qua truy v\u1ea5n HTTPS gi\u1eefa nhi\u1ec1u m\u00e1y ch\u1ee7 DoH, \u0111\u1ea3m b\u1ea3o s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 v\u00e0 c\u00e2n b\u1eb1ng t\u1ea3i tr\u00ean c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DoH.<\/p>\n<\/li>\n

                3. \n

                  L\u1ecdc v\u00e0 ghi nh\u1eadt k\u00fd:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 l\u1ecdc c\u00e1c y\u00eau c\u1ea7u DNS c\u1ee5 th\u1ec3 ho\u1eb7c ghi l\u1ea1i l\u01b0u l\u01b0\u1ee3ng DNS, cung c\u1ea5p cho qu\u1ea3n tr\u1ecb vi\u00ean nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng DNS trong m\u1ea1ng.<\/p>\n<\/li>\n

                4. \n

                  Quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 \u1ea9n danh:<\/strong> B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 tr\u00ecnh ph\u00e2n gi\u1ea3i DoH, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 n\u00e2ng cao h\u01a1n n\u1eefa quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 t\u00ednh \u1ea9n danh c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch \u1ea9n \u0111\u1ecba ch\u1ec9 IP th\u1ef1c c\u1ee7a h\u1ecd kh\u1ecfi tr\u00ecnh ph\u00e2n gi\u1ea3i DoH.<\/p>\n<\/li>\n

                5. \n

                  \u0110\u1ecbnh v\u1ecb \u0111\u1ecba l\u00fd v\u00e0 truy c\u1eadp n\u1ed9i dung:<\/strong> M\u00e1y ch\u1ee7 proxy c\u0169ng c\u00f3 th\u1ec3 cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng quy\u1ec1n truy c\u1eadp v\u00e0o n\u1ed9i dung b\u1ecb gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd b\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn DNS qua c\u00e1c y\u00eau c\u1ea7u HTTPS th\u00f4ng qua c\u00e1c m\u00e1y ch\u1ee7 \u0111\u1eb7t t\u1ea1i c\u00e1c khu v\u1ef1c kh\u00e1c nhau.<\/p>\n<\/li>\n<\/ol>\n

                  Vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c m\u00e1y ch\u1ee7 proxy v\u00e0o thi\u1ebft l\u1eadp DNS qua HTTPS c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 cung c\u1ea5p c\u00e1c t\u00f9y ch\u1ecdn t\u00f9y ch\u1ec9nh v\u00e0 ki\u1ec3m so\u00e1t b\u1ed5 sung.<\/p>\n

                  Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

                  \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 DNS qua HTTPS (DoH), b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                    \n
                  1. D\u1ef1 th\u1ea3o c\u1ee7a L\u1ef1c l\u01b0\u1ee3ng \u0111\u1eb7c nhi\u1ec7m k\u1ef9 thu\u1eadt Internet (IETF) v\u1ec1 DNS qua HTTPS: https:\/\/datatracker.ietf.org\/doc\/draft-ietf-doh-dns-over-https\/<\/a><\/li>\n
                  2. M\u1ea1ng l\u01b0\u1edbi nh\u00e0 ph\u00e1t tri\u1ec3n Mozilla (MDN) \u2013 Gi\u1edbi thi\u1ec7u v\u1ec1 DNS qua HTTPS (DoH): https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Overview_of_DNS_over_HTTPS<\/a><\/li>\n
                  3. Nh\u00e0 ph\u00e1t tri\u1ec3n Google - Gi\u1ea3i th\u00edch v\u1ec1 DNS qua HTTPS (DoH): https:\/\/developers.google.com\/speed\/public-dns\/docs\/doh<\/a><\/li>\n<\/ol>\n

                    T\u00f3m l\u1ea1i, DNS qua HTTPS (DoH) l\u00e0 m\u1ed9t ti\u1ebfn b\u1ed9 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o m\u1eadt th\u00f4ng tin li\u00ean l\u1ea1c DNS v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng tr\u00ean internet. B\u1eb1ng c\u00e1ch m\u00e3 h\u00f3a c\u00e1c truy v\u1ea5n DNS b\u1eb1ng HTTPS, DoH \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c y\u00eau c\u1ea7u DNS c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u1eabn \u0111\u01b0\u1ee3c gi\u1eef b\u00ed m\u1eadt v\u00e0 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda kh\u00e1c nhau. Khi DoH ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 \u1ee7ng h\u1ed9 r\u1ed9ng r\u00e3i, n\u00f3 c\u00f3 ti\u1ec1m n\u0103ng tr\u1edf th\u00e0nh m\u1ed9t t\u00ednh n\u0103ng ti\u00eau chu\u1ea9n trong t\u01b0\u01a1ng lai c\u1ee7a b\u1ea3o m\u1eadt internet. Vi\u1ec7c k\u1ebft h\u1ee3p m\u00e1y ch\u1ee7 proxy v\u1edbi DNS qua HTTPS c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a h\u01a1n n\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t n\u00e2ng cao \u0111\u1ed1i v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS cho c\u00e1c t\u1ed5 ch\u1ee9c c\u0169ng nh\u01b0 ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n.<\/p>","protected":false},"featured_media":468245,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476910","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about DNS over HTTPS (DoH): Securing DNS Requests with Enhanced Privacy<\/mark>","faq_items":[{"question":"What is DNS over HTTPS (DoH)?","answer":"

                    DNS over HTTPS (DoH) is a protocol that enhances the security and privacy of DNS requests by encrypting them using HTTPS (Hypertext Transfer Protocol Secure). It ensures that your DNS queries remain confidential and protected from interception or manipulation.<\/p>"},{"question":"How did DNS over HTTPS (DoH) originate?","answer":"

                    The concept of encrypting DNS traffic gained significant attention when it was first proposed by Patrick McManus of Mozilla in October 2017. Since then, the protocol has undergone refinements and iterations, becoming widely accepted and adopted.<\/p>"},{"question":"How does DNS over HTTPS (DoH) work?","answer":"

                    DNS over HTTPS operates by encrypting DNS queries and responses in HTTPS packets, which are then sent to and received from specialized DoH servers. This end-to-end encryption secures your DNS communication and protects against various DNS-based attacks.<\/p>"},{"question":"What are the key features of DNS over HTTPS (DoH)?","answer":"

                    DNS over HTTPS offers end-to-end encryption, improved privacy, enhanced security against interception, and compatibility with a wide range of platforms and operating systems. It also enables circumvention of DNS filtering and censorship.<\/p>"},{"question":"What types of DNS over HTTPS (DoH) exist?","answer":"

                    There are two main types of DoH deployments: Public DoH Resolvers, operated by service providers for public use, and Private DoH Resolvers, set up within an organization's network infrastructure to enhance internal DNS resolution security.<\/p>"},{"question":"How can I use DNS over HTTPS (DoH)?","answer":"

                    You can use DNS over HTTPS in several ways:<\/p>

                    1. Enable it in modern web browsers like Mozilla Firefox and Google Chrome.<\/li>
                    2. Configure it system-wide in some operating systems.<\/li>
                    3. Utilize third-party applications that support DoH independently.<\/li><\/ol>"},{"question":"What are the challenges and solutions related to DNS over HTTPS (DoH) usage?","answer":"

                      Challenges include potential incompatibility, security concerns with untrusted DoH resolvers, bypassing DNS filtering, and potential difficulties in local network management. Solutions involve selecting reputable DoH service providers and carefully planning DoH deployments.<\/p>"},{"question":"What are the future perspectives of DNS over HTTPS (DoH)?","answer":"

                      As DoH adoption continues to grow, we can expect increased support, encrypted SNI, implementation in IoT devices, standardization, and regulations to ensure secure and consistent usage.<\/p>"},{"question":"How can proxy servers be associated with DNS over HTTPS (DoH)?","answer":"

                      Proxy servers can enhance DoH deployments by caching and accelerating DNS responses, load balancing queries, providing filtering and logging capabilities, improving privacy and anonymity, and assisting with content access and geolocation.<\/p>"},{"question":"Where can I find more information about DNS over HTTPS (DoH)?","answer":"

                      For further details, you can refer to the following resources:<\/p>

                      1. Internet Engineering Task Force (IETF) Draft on DNS over HTTPS: https:\/\/datatracker.ietf.org\/doc\/draft-ietf-doh-dns-over-https\/<\/a><\/li>
                      2. Mozilla Developer Network (MDN) - Introduction to DNS over HTTPS (DoH): https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Overview_of_DNS_over_HTTPS<\/a><\/li>
                      3. Google Developers - DNS over HTTPS (DoH) Explained: https:\/\/developers.google.com\/speed\/public-dns\/docs\/doh<\/a><\/li><\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476910","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476910\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468245"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}