{"id":476973,"date":"2023-08-09T09:06:01","date_gmt":"2023-08-09T09:06:01","guid":{"rendered":""},"modified":"2023-09-05T11:13:46","modified_gmt":"2023-09-05T11:13:46","slug":"domain-name-system-security-extensions-dnssec","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/domain-name-system-security-extensions-dnssec\/","title":{"rendered":"Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC)"},"content":{"rendered":"

Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC) l\u00e0 m\u1ed9t b\u1ed9 ti\u1ec7n \u00edch m\u1edf r\u1ed9ng m\u1eadt m\u00e3 cho H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS) cung c\u1ea5p l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Internet. DNSSEC \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, ng\u0103n ch\u1eb7n nhi\u1ec1u lo\u1ea1i t\u1ea5n c\u00f4ng kh\u00e1c nhau nh\u01b0 \u0111\u1ea7u \u0111\u1ed9c b\u1ed9 \u0111\u1ec7m DNS v\u00e0 t\u1ea5n c\u00f4ng trung gian. B\u1eb1ng c\u00e1ch th\u00eam ch\u1eef k\u00fd s\u1ed1 v\u00e0o d\u1eef li\u1ec7u DNS, DNSSEC cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i x\u00e1c minh t\u00ednh h\u1ee3p ph\u00e1p c\u1ee7a c\u00e1c ph\u1ea3n h\u1ed3i DNS v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u00fang \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn \u0111\u00fang trang web ho\u1eb7c d\u1ecbch v\u1ee5.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a ph\u1ea7n m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC)<\/h2>\n

Kh\u00e1i ni\u1ec7m DNSSEC l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c \u0111\u01b0a ra v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1990 nh\u01b0 m\u1ed9t ph\u1ea3n \u1ee9ng tr\u01b0\u1edbc m\u1ed1i lo ng\u1ea1i ng\u00e0y c\u00e0ng t\u0103ng v\u1ec1 l\u1ed7 h\u1ed5ng c\u1ee7a DNS. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn DNSSEC l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb c\u00f4ng tr\u00ecnh c\u1ee7a Paul V. Mockapetris, nh\u00e0 ph\u00e1t minh DNS v\u00e0 Phill Gross, ng\u01b0\u1eddi \u0111\u00e3 m\u00f4 t\u1ea3 \u00fd t\u01b0\u1edfng th\u00eam b\u1ea3o m\u1eadt m\u1eadt m\u00e3 v\u00e0o DNS trong RFC 2065 v\u00e0o n\u0103m 1997. Tuy nhi\u00ean, do nhi\u1ec1u v\u1ea5n \u0111\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 ho\u1ea1t \u0111\u1ed9ng, vi\u1ec7c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i DNSSEC ph\u1ea3i m\u1ea5t v\u00e0i n\u0103m.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC)<\/h2>\n

DNSSEC ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng chu\u1ed7i tin c\u1eady c\u00f3 th\u1ee9 b\u1eadc \u0111\u1ec3 x\u00e1c th\u1ef1c d\u1eef li\u1ec7u DNS. Khi m\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd, ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n s\u1ebd t\u1ea1o m\u1ed9t c\u1eb7p kh\u00f3a m\u1eadt m\u00e3: kh\u00f3a ri\u00eang v\u00e0 kh\u00f3a chung t\u01b0\u01a1ng \u1ee9ng. Kh\u00f3a ri\u00eang \u0111\u01b0\u1ee3c gi\u1eef b\u00ed m\u1eadt v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u00fd c\u00e1c b\u1ea3n ghi DNS, trong khi kh\u00f3a chung \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n trong v\u00f9ng DNS c\u1ee7a mi\u1ec1n.<\/p>\n

Khi tr\u00ecnh ph\u00e2n gi\u1ea3i DNS nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i DNS c\u00f3 b\u1eadt DNSSEC, n\u00f3 c\u00f3 th\u1ec3 x\u00e1c minh t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a ph\u1ea3n h\u1ed3i b\u1eb1ng c\u00e1ch ki\u1ec3m tra ch\u1eef k\u00fd s\u1ed1 b\u1eb1ng kh\u00f3a chung t\u01b0\u01a1ng \u1ee9ng. Sau \u0111\u00f3, tr\u00ecnh ph\u00e2n gi\u1ea3i c\u00f3 th\u1ec3 x\u00e1c th\u1ef1c to\u00e0n b\u1ed9 chu\u1ed7i tin c\u1eady, b\u1eaft \u0111\u1ea7u t\u1eeb v\u00f9ng g\u1ed1c xu\u1ed1ng mi\u1ec1n c\u1ee5 th\u1ec3, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i b\u01b0\u1edbc trong h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p \u0111\u1ec1u \u0111\u01b0\u1ee3c k\u00fd h\u1ee3p l\u1ec7 v\u00e0 h\u1ee3p l\u1ec7.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a Ph\u1ea7n m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC)<\/h2>\n

DNSSEC gi\u1edbi thi\u1ec7u m\u1ed9t s\u1ed1 lo\u1ea1i b\u1ea3n ghi DNS m\u1edbi cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS:<\/p>\n

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  1. \n

    DNSKEY (Kh\u00f3a c\u00f4ng khai DNS)<\/strong>: Ch\u1ee9a kh\u00f3a chung \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh ch\u1eef k\u00fd DNSSEC.<\/p>\n<\/li>\n

  2. \n

    RRSIG (Ch\u1eef k\u00fd b\u1ea3n ghi t\u00e0i nguy\u00ean)<\/strong>: Ch\u1ee9a ch\u1eef k\u00fd s\u1ed1 cho b\u1ed9 b\u1ea3n ghi t\u00e0i nguy\u00ean DNS c\u1ee5 th\u1ec3.<\/p>\n<\/li>\n

  3. \n

    DS (Ng\u01b0\u1eddi k\u00fd \u1ee7y quy\u1ec1n)<\/strong>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thi\u1ebft l\u1eadp chu\u1ed7i tin c\u1eady gi\u1eefa v\u00f9ng cha v\u00e0 con.<\/p>\n<\/li>\n

  4. \n

    NSEC (B\u1ea3o m\u1eadt ti\u1ebfp theo)<\/strong>: Cung c\u1ea5p s\u1ef1 t\u1eeb ch\u1ed1i t\u1ed3n t\u1ea1i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c cho c\u00e1c b\u1ea3n ghi DNS.<\/p>\n<\/li>\n

  5. \n

    NSEC3 (Phi\u00ean b\u1ea3n b\u1ea3o m\u1eadt ti\u1ebfp theo 3)<\/strong>: Phi\u00ean b\u1ea3n n\u00e2ng cao c\u1ee7a NSEC ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng li\u1ec7t k\u00ea v\u00f9ng.<\/p>\n<\/li>\n

  6. \n

    DLV (X\u00e1c th\u1ef1c Lookaside DNSSEC)<\/strong>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p t\u1ea1m th\u1eddi trong giai \u0111o\u1ea1n \u0111\u1ea7u \u00e1p d\u1ee5ng DNSSEC.<\/p>\n<\/li>\n<\/ol>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC)<\/h2>\n

    C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a DNSSEC bao g\u1ed3m:<\/p>\n

      \n
    1. \n

      X\u00e1c th\u1ef1c ngu\u1ed3n g\u1ed1c d\u1eef li\u1ec7u<\/strong>: DNSSEC \u0111\u1ea3m b\u1ea3o r\u1eb1ng ph\u1ea3n h\u1ed3i DNS \u0111\u1ebfn t\u1eeb c\u00e1c ngu\u1ed3n h\u1ee3p ph\u00e1p v\u00e0 kh\u00f4ng b\u1ecb thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n.<\/p>\n<\/li>\n

    2. \n

      To\u00e0n v\u1eb9n d\u1eef li\u1ec7u<\/strong>: DNSSEC b\u1ea3o v\u1ec7 ch\u1ed1ng nhi\u1ec5m \u0111\u1ed9c b\u1ed9 \u0111\u1ec7m DNS v\u00e0 c\u00e1c h\u00ecnh th\u1ee9c thao t\u00fang d\u1eef li\u1ec7u kh\u00e1c.<\/p>\n<\/li>\n

    3. \n

      X\u00e1c th\u1ef1c t\u1eeb ch\u1ed1i s\u1ef1 t\u1ed3n t\u1ea1i<\/strong>: DNSSEC cho ph\u00e9p tr\u00ecnh ph\u00e2n gi\u1ea3i DNS x\u00e1c minh xem m\u1ed9t mi\u1ec1n ho\u1eb7c b\u1ea3n ghi c\u1ee5 th\u1ec3 c\u00f3 t\u1ed3n t\u1ea1i hay kh\u00f4ng.<\/p>\n<\/li>\n

    4. \n

      M\u00f4 h\u00ecnh \u1ee7y th\u00e1c ph\u00e2n c\u1ea5p<\/strong>: Chu\u1ed7i tin c\u1eady c\u1ee7a DNSSEC \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p DNS hi\u1ec7n c\u00f3, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n

    5. \n

      Kh\u00f4ng b\u00e1c b\u1ecf<\/strong>: Ch\u1eef k\u00fd DNSSEC cung c\u1ea5p b\u1eb1ng ch\u1ee9ng cho th\u1ea5y m\u1ed9t th\u1ef1c th\u1ec3 c\u1ee5 th\u1ec3 \u0111\u00e3 k\u00fd d\u1eef li\u1ec7u DNS.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC)<\/h2>\n

      DNSSEC h\u1ed7 tr\u1ee3 nhi\u1ec1u thu\u1eadt to\u00e1n kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o kh\u00f3a v\u00e0 ch\u1eef k\u00fd m\u1eadt m\u00e3. C\u00e1c thu\u1eadt to\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0:<\/p>\n\n\n\n\n\n\n\n
      Thu\u1eadt to\u00e1n<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      RSA<\/td>\nM\u00e3 h\u00f3a Rivest-Shamir-Adleman<\/td>\n<\/tr>\n
      DSA<\/td>\nThu\u1eadt to\u00e1n ch\u1eef k\u00fd s\u1ed1<\/td>\n<\/tr>\n
      ECC<\/td>\nM\u1eadt m\u00e3 \u0111\u01b0\u1eddng cong Elliptic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1ch s\u1eed d\u1ee5ng Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC), s\u1ef1 c\u1ed1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n

      C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng DNSSEC:<\/h3>\n
        \n
      1. \n

        K\u00fd DNSSEC<\/strong>: Ch\u1ee7 s\u1edf h\u1eefu mi\u1ec1n c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t DNSSEC cho mi\u1ec1n c\u1ee7a h\u1ecd b\u1eb1ng c\u00e1ch k\u00fd c\u00e1c b\u1ea3n ghi DNS b\u1eb1ng kh\u00f3a m\u1eadt m\u00e3.<\/p>\n<\/li>\n

      2. \n

        H\u1ed7 tr\u1ee3 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS<\/strong>: Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) v\u00e0 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS c\u00f3 th\u1ec3 tri\u1ec3n khai x\u00e1c th\u1ef1c DNSSEC \u0111\u1ec3 x\u00e1c minh ph\u1ea3n h\u1ed3i DNS \u0111\u00e3 k\u00fd.<\/p>\n<\/li>\n<\/ol>\n

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

          Chuy\u1ec3n \u0111\u1ed5i kh\u00f3a k\u00fd v\u00f9ng<\/strong>: Vi\u1ec7c thay \u0111\u1ed5i kh\u00f3a ri\u00eang d\u00f9ng \u0111\u1ec3 k\u00fd c\u00e1c b\u1ea3n ghi DNS c\u1ea7n ph\u1ea3i l\u1eadp k\u1ebf ho\u1ea1ch c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i kh\u00f3a.<\/p>\n<\/li>\n

        2. \n

          Chu\u1ed7i tin c\u1eady<\/strong>: Vi\u1ec7c \u0111\u1ea3m b\u1ea3o to\u00e0n b\u1ed9 chu\u1ed7i tin c\u1eady t\u1eeb v\u00f9ng g\u1ed1c \u0111\u1ebfn mi\u1ec1n \u0111\u01b0\u1ee3c k\u00fd v\u00e0 x\u00e1c th\u1ef1c ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c.<\/p>\n<\/li>\n

        3. \n

          Tri\u1ec3n khai DNSSEC<\/strong>: Vi\u1ec7c \u00e1p d\u1ee5ng DNSSEC \u0111ang di\u1ec5n ra d\u1ea7n d\u1ea7n do t\u00ednh ph\u1ee9c t\u1ea1p c\u1ee7a vi\u1ec7c tri\u1ec3n khai v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng c\u0169 h\u01a1n.<\/p>\n<\/li>\n<\/ol>\n

          C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n\n\n\n\n\n\n\n\n\n\n
          Thu\u1eadt ng\u1eef<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
          DNSSEC<\/td>\nCung c\u1ea5p b\u1ea3o m\u1eadt m\u1eadt m\u00e3 cho DNS<\/td>\n<\/tr>\n
          B\u1ea3o m\u1eadt DNS<\/td>\nThu\u1eadt ng\u1eef chung \u0111\u1ec3 b\u1ea3o m\u1eadt DNS<\/td>\n<\/tr>\n
          L\u1ecdc DNS<\/td>\nH\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c t\u00ean mi\u1ec1n ho\u1eb7c n\u1ed9i dung c\u1ee5 th\u1ec3<\/td>\n<\/tr>\n
          T\u01b0\u1eddng l\u1eeda DNS<\/td>\nB\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean DNS<\/td>\n<\/tr>\n
          DNS qua HTTPS (DoH)<\/td>\nM\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng DNS qua HTTPS<\/td>\n<\/tr>\n
          DNS qua TLS (DoT)<\/td>\nM\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng DNS qua TLS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn DNSSEC<\/h2>\n

          DNSSEC li\u00ean t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c th\u00e1ch th\u1ee9c b\u1ea3o m\u1eadt m\u1edbi v\u00e0 c\u1ea3i thi\u1ec7n vi\u1ec7c tri\u1ec3n khai n\u00f3. M\u1ed9t s\u1ed1 quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn DNSSEC bao g\u1ed3m:<\/p>\n

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          1. \n

            T\u1ef1 \u0111\u1ed9ng h\u00f3a DNSSEC<\/strong>: H\u1ee3p l\u00fd h\u00f3a quy tr\u00ecnh qu\u1ea3n l\u00fd kh\u00f3a DNSSEC \u0111\u1ec3 gi\u00fap vi\u1ec7c tri\u1ec3n khai d\u1ec5 d\u00e0ng v\u00e0 d\u1ec5 ti\u1ebfp c\u1eadn h\u01a1n.<\/p>\n<\/li>\n

          2. \n

            M\u1eadt m\u00e3 h\u1eadu l\u01b0\u1ee3ng t\u1eed<\/strong>: \u0110i\u1ec1u tra v\u00e0 \u00e1p d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n m\u1eadt m\u00e3 m\u1edbi ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u0111i\u1ec7n to\u00e1n l\u01b0\u1ee3ng t\u1eed.<\/p>\n<\/li>\n

          3. \n

            DNS qua HTTPS (DoH) v\u00e0 DNS qua TLS (DoT)<\/strong>: T\u00edch h\u1ee3p DNSSEC v\u1edbi DoH v\u00e0 DoT \u0111\u1ec3 n\u00e2ng cao t\u00ednh b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0.<\/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 DNSSEC<\/h2>\n

            M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c tri\u1ec3n khai DNSSEC. H\u1ecd c\u00f3 th\u1ec3:<\/p>\n

              \n
            1. \n

              B\u1ed9 nh\u1edb \u0111\u1ec7m<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m c\u00e1c ph\u1ea3n h\u1ed3i DNS, gi\u1ea3m t\u1ea3i cho c\u00e1c tr\u00ecnh ph\u00e2n gi\u1ea3i DNS v\u00e0 c\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i.<\/p>\n<\/li>\n

            2. \n

              X\u00e1c th\u1ef1c DNSSEC<\/strong>: Proxy c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n x\u00e1c th\u1ef1c DNSSEC thay m\u1eb7t cho kh\u00e1ch h\u00e0ng, b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n

            3. \n

              Quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 b\u1ea3o m\u1eadt<\/strong>: B\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn c\u00e1c truy v\u1ea5n DNS th\u00f4ng qua proxy, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 tr\u00e1nh b\u1ecb nghe l\u00e9n v\u00e0 thao t\u00fang DNS.<\/p>\n<\/li>\n<\/ol>\n

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

              \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNSSEC), b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                \n
              1. L\u1ef1c l\u01b0\u1ee3ng \u0111\u1eb7c nhi\u1ec7m k\u1ef9 thu\u1eadt Internet (IETF) Nh\u00f3m c\u00f4ng t\u00e1c DNSSEC<\/a><\/li>\n
              2. DNSSEC.net<\/a><\/li>\n
              3. Hi\u1ec7p h\u1ed9i Internet (ISOC) S\u00e1ng ki\u1ebfn tri\u1ec3n khai DNSSEC<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468260,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476973","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Domain Name System Security Extensions (DNSSEC)<\/mark>","faq_items":[{"question":"What is Domain Name System Security Extensions (DNSSEC)?","answer":"

                Domain Name System Security Extensions (DNSSEC) is a suite of cryptographic extensions that adds an extra layer of security to the Domain Name System (DNS). It ensures the authenticity and integrity of DNS data, protecting users from various cyber threats like DNS cache poisoning and man-in-the-middle attacks.<\/p>"},{"question":"How did DNSSEC originate, and when was it first mentioned?","answer":"

                DNSSEC was first introduced in the early 1990s as a response to the growing concerns about the vulnerabilities of DNS. The first mention of DNSSEC can be traced back to RFC 2065 in 1997, authored by Paul V. Mockapetris and Phill Gross, who proposed the idea of adding cryptographic security to DNS.<\/p>"},{"question":"How does DNSSEC work internally?","answer":"

                DNSSEC uses digital signatures and a hierarchical chain of trust to authenticate DNS data. Domain owners generate cryptographic key pairs - a private key for signing DNS records and a corresponding public key published in the DNS zone. When a DNS resolver receives a DNS response with DNSSEC, it verifies the digital signature using the public key to ensure the data's authenticity and validity.<\/p>"},{"question":"What are the key features of DNSSEC?","answer":"

                The key features of DNSSEC include data origin authentication, data integrity, authenticated denial of existence, a hierarchical trust model, and non-repudiation. These features collectively enhance the security of DNS and protect users from various DNS-related attacks.<\/p>"},{"question":"What types of DNSSEC exist?","answer":"

                DNSSEC supports different cryptographic algorithms for generating keys and signatures, including RSA, DSA, and ECC. These algorithms provide different levels of security, and their usage depends on the specific needs and preferences of domain owners.<\/p>"},{"question":"How can DNSSEC be used, and what are the associated problems and solutions?","answer":"

                DNSSEC can be used by domain owners to sign their DNS records and by DNS resolvers to validate the authenticity of DNS responses. However, some challenges include zone signing key rollover, ensuring the chain of trust is correctly signed, and the gradual adoption due to complexity and compatibility issues.<\/p>"},{"question":"What are the main characteristics of DNSSEC compared to similar terms?","answer":"

                DNSSEC is a specific set of cryptographic extensions for DNS security. It should not be confused with general DNS security, DNS filtering, DNS firewall, or DNS over HTTPS (DoH) and DNS over TLS (DoT). Each term serves a different purpose in securing the DNS infrastructure.<\/p>"},{"question":"What are the future perspectives and technologies related to DNSSEC?","answer":"

                The future of DNSSEC includes automation for easier deployment, exploration of post-quantum cryptography, and integration with DNS over HTTPS (DoH) and DNS over TLS (DoT) for enhanced security and privacy.<\/p>"},{"question":"How can proxy servers be associated with DNSSEC?","answer":"

                Proxy servers can enhance DNSSEC implementation by caching DNS responses, performing DNSSEC validation on behalf of clients, and adding an extra layer of privacy and security to users' internet connections.<\/p>"},{"question":"Where can I find more information about DNSSEC?","answer":"

                For more information about DNSSEC, you can visit the Internet Engineering Task Force (IETF) DNSSEC Working Group, DNSSEC.net, and the Internet Society (ISOC) DNSSEC Deployment Initiative.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476973","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\/476973\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468260"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}