{"id":476881,"date":"2023-08-09T09:04:34","date_gmt":"2023-08-09T09:04:34","guid":{"rendered":""},"modified":"2023-09-05T11:13:37","modified_gmt":"2023-09-05T11:13:37","slug":"dns-blocking","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-blocking\/","title":{"rendered":"Ch\u1eb7n DNS"},"content":{"rendered":"

Ch\u1eb7n DNS l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u0103n ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web c\u1ee5 th\u1ec3 ho\u1eb7c n\u1ed9i dung tr\u1ef1c tuy\u1ebfn b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i quy tr\u00ecnh ph\u00e2n gi\u1ea3i H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS). B\u1eb1ng c\u00e1ch thao t\u00fang c\u00e1c truy v\u1ea5n DNS, m\u1ed9t s\u1ed1 trang web nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c \u0111\u1ecba ch\u1ec9 IP thay th\u1ebf ho\u1eb7c b\u1ecb ng\u0103n ch\u1eb7n ho\u00e0n to\u00e0n. C\u00e1ch l\u00e0m n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u00ednh ph\u1ee7, nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) v\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c thi ki\u1ec3m duy\u1ec7t, ch\u1eb7n c\u00e1c trang web \u0111\u1ed9c h\u1ea1i ho\u1eb7c h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a vi\u1ec7c ch\u1eb7n DNS v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n

Vi\u1ec7c ch\u1eb7n DNS c\u00f3 t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Internet khi c\u00e1c nh\u00e0 ch\u1ee9c tr\u00e1ch nh\u1eadn ra s\u1ef1 c\u1ea7n thi\u1ebft ph\u1ea3i ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd n\u1ed9i dung tr\u1ef1c tuy\u1ebfn. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ch\u1eb7n DNS l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb gi\u1eefa nh\u1eefng n\u0103m 1990 khi m\u1ed9t s\u1ed1 qu\u1ed1c gia b\u1eaft \u0111\u1ea7u h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web c\u1ee5 th\u1ec3 v\u00ec l\u00fd do ch\u00ednh tr\u1ecb, t\u00f4n gi\u00e1o ho\u1eb7c v\u0103n h\u00f3a. Ch\u1eb3ng h\u1ea1n, Trung Qu\u1ed1c l\u00e0 m\u1ed9t trong nh\u1eefng n\u01b0\u1edbc ti\u00ean phong tri\u1ec3n khai vi\u1ec7c ch\u1eb7n DNS \u0111\u1ec3 t\u1ea1o ra Great Wall, m\u1ed9t h\u1ec7 th\u1ed1ng ki\u1ec3m duy\u1ec7t Internet to\u00e0n di\u1ec7n.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 ch\u1eb7n DNS: M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 ch\u1eb7n DNS<\/h2>\n

Ch\u1eb7n DNS ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn hai k\u1ef9 thu\u1eadt ch\u00ednh: l\u1ecdc DNS v\u00e0 chuy\u1ec3n h\u01b0\u1edbng DNS.<\/p>\n

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    L\u1ecdc DNS: Trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, tr\u00ecnh ph\u00e2n gi\u1ea3i DNS s\u1ebd l\u1ecdc c\u00e1c t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3 kh\u1ecfi qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i. Khi ng\u01b0\u1eddi d\u00f9ng c\u1ed1 g\u1eafng truy c\u1eadp m\u1ed9t trang web b\u1ecb ch\u1eb7n, truy v\u1ea5n DNS s\u1ebd b\u1ecb ch\u1eb7n v\u00e0 tr\u00ecnh ph\u00e2n gi\u1ea3i tr\u1ea3 v\u1ec1 ph\u1ea3n h\u1ed3i ti\u00eau c\u1ef1c, cho bi\u1ebft t\u00ean mi\u1ec1n kh\u00f4ng t\u1ed3n t\u1ea1i. K\u1ebft qu\u1ea3 l\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 truy c\u1eadp n\u1ed9i dung b\u1ecb ch\u1eb7n.<\/p>\n<\/li>\n

  2. \n

    Chuy\u1ec3n h\u01b0\u1edbng DNS: K\u1ef9 thu\u1eadt n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c thay \u0111\u1ed5i ph\u1ea3n h\u1ed3i ph\u00e2n gi\u1ea3i DNS \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP thay th\u1ebf. Thay v\u00ec ch\u1eb7n ho\u00e0n to\u00e0n quy\u1ec1n truy c\u1eadp, ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn m\u1ed9t trang web ho\u1eb7c trang kh\u00e1c, th\u01b0\u1eddng ch\u1ee9a th\u00f4ng b\u00e1o gi\u1ea3i th\u00edch l\u00fd do n\u1ed9i dung g\u1ed1c kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<\/li>\n<\/ol>\n

    C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a ch\u1eb7n DNS: C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u1eb7n DNS<\/h2>\n

    Vi\u1ec7c ch\u1eb7n DNS th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau:<\/p>\n

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      Tr\u00ecnh ph\u00e2n gi\u1ea3i DNS<\/strong>: Thi\u1ebft b\u1ecb c\u1ee7a kh\u00e1ch h\u00e0ng, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e1y t\u00ednh ho\u1eb7c \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, g\u1eedi truy v\u1ea5n DNS \u0111\u1ebfn tr\u00ecnh ph\u00e2n gi\u1ea3i DNS, th\u01b0\u1eddng do ISP cung c\u1ea5p.<\/p>\n<\/li>\n

    2. \n

      B\u1ed9 l\u1ecdc\/Chuy\u1ec3n h\u01b0\u1edbng DNS<\/strong>: Th\u00e0nh ph\u1ea7n n\u00e0y n\u1eb1m gi\u1eefa tr\u00ecnh ph\u00e2n gi\u1ea3i DNS v\u00e0 m\u00e1y ch\u1ee7 DNS c\u00f3 th\u1ea9m quy\u1ec1n. N\u00f3 ch\u1eb7n c\u00e1c truy v\u1ea5n DNS v\u00e0 \u00e1p d\u1ee5ng c\u00e1c quy t\u1eafc ch\u1eb7n d\u1ef1a tr\u00ean c\u00e1c ch\u00ednh s\u00e1ch \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/p>\n<\/li>\n

    3. \n

      C\u01a1 s\u1edf d\u1eef li\u1ec7u quy t\u1eafc ch\u1eb7n<\/strong>: C\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e0y ch\u1ee9a danh s\u00e1ch c\u00e1c t\u00ean mi\u1ec1n ho\u1eb7c t\u1eeb kh\u00f3a b\u1ecb ch\u1eb7n. Khi nh\u1eadn \u0111\u01b0\u1ee3c truy v\u1ea5n DNS, b\u1ed9 l\u1ecdc DNS s\u1ebd ki\u1ec3m tra c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem mi\u1ec1n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u c\u00f3 n\u00ean b\u1ecb ch\u1eb7n ho\u1eb7c chuy\u1ec3n h\u01b0\u1edbng hay kh\u00f4ng.<\/p>\n<\/li>\n

    4. \n

      Tr\u00ecnh qu\u1ea3n l\u00fd ph\u1ea3n h\u1ed3i<\/strong>: Khi ph\u00e1t hi\u1ec7n m\u1ed9t mi\u1ec1n b\u1ecb ch\u1eb7n, tr\u00ecnh qu\u1ea3n l\u00fd ph\u1ea3n h\u1ed3i s\u1ebd t\u1ea1o ph\u1ea3n h\u1ed3i th\u00edch h\u1ee3p \u0111\u1ec3 t\u1eeb ch\u1ed1i gi\u1ea3i ph\u00e1p (trong l\u1ecdc DNS) ho\u1eb7c chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP thay th\u1ebf (trong chuy\u1ec3n h\u01b0\u1edbng DNS).<\/p>\n<\/li>\n<\/ol>\n

      Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a ch\u1eb7n DNS<\/h2>\n

      Ch\u1eb7n DNS \u0111i k\u00e8m v\u1edbi m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng v\u00e0 h\u1ea1n ch\u1ebf ch\u00ednh:<\/p>\n

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        \u0110\u1ed9 chi ti\u1ebft<\/strong>: Vi\u1ec7c ch\u1eb7n DNS c\u00f3 th\u1ec3 r\u1ea5t chi ti\u1ebft, cho ph\u00e9p c\u01a1 quan ch\u1ee9c n\u0103ng ch\u1eb7n c\u00e1c trang web, trang c\u1ee5 th\u1ec3 ho\u1eb7c th\u1eadm ch\u00ed c\u00e1c ph\u1ea7n c\u1ee5 th\u1ec3 trong m\u1ed9t trang web.<\/p>\n<\/li>\n

      2. \n

        Th\u1ef1c hi\u1ec7n d\u1ec5 d\u00e0ng<\/strong>: Vi\u1ec7c ch\u1eb7n DNS th\u1ef1c hi\u1ec7n t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m duy\u1ec7t kh\u00e1c, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn c\u1ee7a c\u00e1c ch\u00ednh ph\u1ee7 v\u00e0 ISP.<\/p>\n<\/li>\n

      3. \n

        c\u00e1ch gi\u1ea3i quy\u1ebft<\/strong>: Vi\u1ec7c ch\u1eb7n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ecf qua b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 DNS thay th\u1ebf, M\u1ea1ng ri\u00eang \u1ea3o (VPN) ho\u1eb7c m\u1ea1ng Tor, khi\u1ebfn vi\u1ec7c ch\u1eb7n n\u00e0y k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p.<\/p>\n<\/li>\n

      4. \n

        Thi\u1ec7t h\u1ea1i t\u00e0i s\u1ea3n th\u1ebf ch\u1ea5p<\/strong>: Vi\u1ec7c ch\u1eb7n DNS c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u201cthi\u1ec7t h\u1ea1i t\u00e0i s\u1ea3n th\u1ebf ch\u1ea5p\u201d, trong \u0111\u00f3 c\u00e1c trang web h\u1ee3p ph\u00e1p chia s\u1ebb c\u00f9ng \u0111\u1ecba ch\u1ec9 IP ho\u1eb7c n\u1ec1n t\u1ea3ng l\u01b0u tr\u1eef v\u1edbi n\u1ed9i dung b\u1ecb ch\u1eb7n c\u0169ng kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<\/li>\n<\/ol>\n

        C\u00e1c lo\u1ea1i ch\u1eb7n DNS<\/h2>\n

        Ch\u1eb7n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau d\u1ef1a tr\u00ean m\u1ee5c \u0111\u00edch v\u00e0 ph\u1ea1m vi ch\u1eb7n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n\n\n\n\n\n\n
        Ki\u1ec3u<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
        Ch\u1eb7n \u0111\u1ecba l\u00fd<\/td>\nCh\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o n\u1ed9i dung d\u1ef1a tr\u00ean v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tu\u00e2n th\u1ee7 c\u00e1c th\u1ecfa thu\u1eadn c\u1ea5p ph\u00e9p khu v\u1ef1c.<\/td>\n<\/tr>\n
        Ki\u1ec3m duy\u1ec7t c\u1ee7a ch\u00ednh ph\u1ee7<\/td>\n\u0110\u01b0\u1ee3c ch\u00ednh ph\u1ee7 \u00e1p \u0111\u1eb7t \u0111\u1ec3 ki\u1ec3m so\u00e1t lu\u1ed3ng th\u00f4ng tin, h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o n\u1ed9i dung nh\u1ea1y c\u1ea3m v\u1ec1 ch\u00ednh tr\u1ecb ho\u1eb7c th\u1ef1c thi c\u00e1c chu\u1ea9n m\u1ef1c v\u0103n h\u00f3a v\u00e0 t\u00f4n gi\u00e1o.<\/td>\n<\/tr>\n
        Ch\u1ed1ng ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<\/td>\nCh\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web \u0111\u1ed9c h\u1ea1i \u0111\u00e3 bi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i, l\u1eeba \u0111\u1ea3o v\u00e0 c\u00e1c m\u1ed1i \u0111e d\u1ecda an ninh m\u1ea1ng kh\u00e1c.<\/td>\n<\/tr>\n
        Ki\u1ec3m so\u00e1t c\u1ee7a ph\u1ee5 huynh<\/td>\n\u0110\u01b0\u1ee3c cha m\u1eb9 ho\u1eb7c ng\u01b0\u1eddi gi\u00e1m h\u1ed9 s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o n\u1ed9i dung kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi tr\u1ebb em.<\/td>\n<\/tr>\n
        Ch\u00ednh s\u00e1ch n\u01a1i l\u00e0m vi\u1ec7c<\/td>\nNh\u00e0 tuy\u1ec3n d\u1ee5ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ch\u1eb7n DNS \u0111\u1ec3 th\u1ef1c thi ch\u00ednh s\u00e1ch c\u1ee7a c\u00f4ng ty, h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ea1ng x\u00e3 h\u1ed9i ho\u1eb7c ng\u0103n ch\u1eb7n c\u00e1c trang web l\u00e3ng ph\u00ed th\u1eddi gian trong gi\u1edd l\u00e0m vi\u1ec7c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng ch\u1eb7n DNS, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n

        C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ch\u1eb7n DNS<\/h3>\n
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          Ki\u1ec3m duy\u1ec7t v\u00e0 ki\u1ec3m so\u00e1t n\u1ed9i dung<\/strong>: Ch\u00ednh ph\u1ee7 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ch\u1eb7n DNS \u0111\u1ec3 ki\u1ec3m so\u00e1t lu\u1ed3ng th\u00f4ng tin v\u00e0 h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 trang web nh\u1ea5t \u0111\u1ecbnh \u0111\u01b0\u1ee3c coi l\u00e0 c\u00f3 h\u1ea1i ho\u1eb7c nh\u1ea1y c\u1ea3m v\u1ec1 m\u1eb7t ch\u00ednh tr\u1ecb.<\/p>\n<\/li>\n

        2. \n

          Ki\u1ec3m so\u00e1t c\u1ee7a ph\u1ee5 huynh<\/strong>: Cha m\u1eb9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ch\u1eb7n DNS \u0111\u1ec3 b\u1ea3o v\u1ec7 con m\u00ecnh truy c\u1eadp n\u1ed9i dung kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c c\u00f3 h\u1ea1i tr\u00ean Internet.<\/p>\n<\/li>\n

        3. \n

          B\u1ea3o v\u1ec7 ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i v\u00e0 l\u1eeba \u0111\u1ea3o<\/strong>: Ch\u1eb7n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web \u0111\u1ed9c h\u1ea1i \u0111\u00e3 bi\u1ebft, t\u0103ng c\u01b0\u1eddng an ninh m\u1ea1ng t\u1ed5ng th\u1ec3.<\/p>\n<\/li>\n<\/ol>\n

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

            Ch\u1eb7n qu\u00e1 m\u1ee9c<\/strong>: Vi\u1ec7c ch\u1eb7n DNS \u0111\u00f4i khi c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng ch\u1eb7n qu\u00e1 m\u1ee9c, trong \u0111\u00f3 c\u00e1c trang web h\u1ee3p ph\u00e1p v\u00f4 t\u00ecnh b\u1ecb ch\u1eb7n. Vi\u1ec7c tri\u1ec3n khai c\u00e1c thu\u1eadt to\u00e1n l\u1ecdc ch\u00ednh x\u00e1c h\u01a1n c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m t\u00ecnh tr\u1ea1ng ch\u1eb7n qu\u00e1 m\u1ee9c.<\/p>\n<\/li>\n

          2. \n

            \u0110ang ch\u1eb7n<\/strong>: M\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng quy\u1ebft t\u00e2m c\u00f3 th\u1ec3 t\u00ecm c\u00e1ch v\u01b0\u1ee3t qua vi\u1ec7c ch\u1eb7n DNS, d\u1eabn \u0111\u1ebfn vi\u1ec7c ch\u1eb7n th\u1ea5p. Th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt c\u01a1 s\u1edf d\u1eef li\u1ec7u quy t\u1eafc ch\u1eb7n v\u00e0 tri\u1ec3n khai c\u00e1c c\u01a1 ch\u1ebf ki\u1ec3m duy\u1ec7t kh\u00e1c c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n

          3. \n

            IPv6 v\u00e0 HTTPS<\/strong>: V\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i IPv6 v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng HTTPS ng\u00e0y c\u00e0ng t\u0103ng, vi\u1ec7c ch\u1eb7n DNS ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c trong vi\u1ec7c ch\u1eb7n n\u1ed9i dung m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Khuy\u1ebfn kh\u00edch ch\u1ee7 s\u1edf h\u1eefu trang web \u00e1p d\u1ee5ng HTTPS v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch IPv6 l\u00e0 nh\u1eefng gi\u1ea3i ph\u00e1p ti\u1ec1m n\u0103ng.<\/p>\n<\/li>\n<\/ol>\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\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
            L\u1ecdc DNS<\/td>\nM\u1ed9t t\u1eadp h\u1ee3p con c\u1ee7a ch\u1eb7n DNS li\u00ean quan \u0111\u1ebfn vi\u1ec7c ch\u1eb7n c\u00f3 ch\u1ecdn l\u1ecdc c\u00e1c t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3 kh\u1ecfi vi\u1ec7c gi\u1ea3i quy\u1ebft.<\/td>\n<\/tr>\n
            Chuy\u1ec3n h\u01b0\u1edbng DNS<\/td>\nM\u1ed9t t\u1eadp h\u1ee3p con ch\u1eb7n DNS kh\u00e1c chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c \u0111\u1ecba ch\u1ec9 IP thay th\u1ebf thay v\u00ec ch\u1eb7n ch\u00fang ho\u00e0n to\u00e0n.<\/td>\n<\/tr>\n
            B\u1ee9c t\u01b0\u1eddng l\u1eeda<\/td>\nM\u1eb7c d\u00f9 t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n ch\u1eb7n DNS nh\u01b0ng ch\u00fang l\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt r\u1ed9ng h\u01a1n \u0111\u1ec3 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng n\u00f3i chung.<\/td>\n<\/tr>\n
            M\u00e1y ch\u1ee7 proxy<\/td>\nM\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi t\u00ednh n\u0103ng ch\u1eb7n DNS \u0111\u1ec3 v\u01b0\u1ee3t qua c\u00e1c h\u1ea1n ch\u1ebf v\u00e0 truy c\u1eadp n\u1ed9i dung b\u1ecb ch\u1eb7n.<\/td>\n<\/tr>\n
            Ki\u1ec3m tra g\u00f3i s\u00e2u<\/td>\nDPI c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi t\u00ednh n\u0103ng ch\u1eb7n DNS \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 ch\u1eb7n n\u1ed9i dung ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 d\u1ef1a tr\u00ean n\u1ed9i dung g\u00f3i.<\/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 ch\u1eb7n DNS<\/h2>\n

            Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, vi\u1ec7c ch\u1eb7n DNS c\u00f3 th\u1ec3 s\u1ebd ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 c\u1ea3i ti\u1ebfn m\u1edbi. M\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai bao g\u1ed3m:<\/p>\n

              \n
            1. \n

              DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a<\/strong>: Khi DNS-over-HTTPS (DoH) v\u00e0 DNS-over-TLS (DoT) tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1eb7n DNS truy\u1ec1n th\u1ed1ng c\u00f3 th\u1ec3 tr\u1edf n\u00ean k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n. C\u00e1c gi\u1ea3i ph\u00e1p ch\u1eb7n DNS trong t\u01b0\u01a1ng lai s\u1ebd c\u1ea7n ph\u1ea3i th\u00edch \u1ee9ng v\u1edbi l\u01b0u l\u01b0\u1ee3ng DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a.<\/p>\n<\/li>\n

            2. \n

              L\u1ecdc \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi AI<\/strong>: C\u00e1c thu\u1eadt to\u00e1n tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 h\u1ecdc m\u00e1y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c ch\u1eb7n DNS v\u00e0 gi\u1ea3m c\u1ea3 vi\u1ec7c ch\u1eb7n qu\u00e1 m\u1ee9c v\u00e0 ch\u1eb7n qu\u00e1 m\u1ee9c.<\/p>\n<\/li>\n

            3. \n

              DNS d\u1ef1a tr\u00ean chu\u1ed7i kh\u1ed1i<\/strong>: C\u00e1c h\u1ec7 th\u1ed1ng DNS d\u1ef1a tr\u00ean blockchain, phi t\u1eadp trung c\u00f3 th\u1ec3 khi\u1ebfn c\u00e1c k\u1ef9 thu\u1eadt ch\u1eb7n DNS truy\u1ec1n th\u1ed1ng tr\u1edf n\u00ean l\u1ed7i th\u1eddi v\u00ec ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ki\u1ec3m duy\u1ec7t v\u00e0 thao t\u00fang cao h\u01a1n.<\/p>\n<\/li>\n<\/ol>\n

              C\u00e1ch s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy ho\u1eb7c li\u00ean k\u1ebft v\u1edbi vi\u1ec7c ch\u1eb7n DNS<\/h2>\n

              M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c v\u01b0\u1ee3t qua vi\u1ec7c ch\u1eb7n DNS. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u1ecbnh tuy\u1ebfn c\u00e1c truy v\u1ea5n DNS c\u1ee7a m\u00ecnh th\u00f4ng qua m\u00e1y ch\u1ee7 proxy, tr\u00e1nh n\u00e9 hi\u1ec7u qu\u1ea3 qu\u00e1 tr\u00ecnh l\u1ecdc ho\u1eb7c chuy\u1ec3n h\u01b0\u1edbng DNS do tr\u00ecnh ph\u00e2n gi\u1ea3i DNS c\u1ee5c b\u1ed9 \u00e1p \u0111\u1eb7t. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp n\u1ed9i dung b\u1ecb ch\u1eb7n b\u1eb1ng c\u00e1ch gi\u1ea3i quy\u1ebft c\u00e1c truy v\u1ea5n DNS th\u00f4ng qua m\u00e1y ch\u1ee7 proxy n\u1eb1m \u1edf m\u1ed9t v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c v\u1edbi c\u00e1c ch\u00ednh s\u00e1ch DNS nh\u1eb9 nh\u00e0ng h\u01a1n.<\/p>\n

              C\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy (oneproxy.pro) cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp Internet th\u00f4ng qua m\u1ea1ng m\u00e1y ch\u1ee7 proxy c\u1ee7a h\u1ecd, t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0, b\u1ecf qua c\u00e1c gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd v\u00e0 tr\u00e1nh ch\u1eb7n DNS.<\/p>\n

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

              \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 ch\u1eb7n DNS v\u00e0 c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan, vui l\u00f2ng tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                \n
              1. \n

                Ch\u1eb7n DNS v\u00e0 ki\u1ec3m duy\u1ec7t Internet<\/a> \u2013 B\u00e0i vi\u1ebft tr\u00ean Wikipedia v\u1ec1 ch\u1eb7n DNS v\u00e0 c\u00e1ch tri\u1ec3n khai n\u00f3 \u0111\u1ec3 ki\u1ec3m duy\u1ec7t Internet.<\/p>\n<\/li>\n

              2. \n

                B\u1ee9c t\u01b0\u1eddng l\u1eeda v\u0129 \u0111\u1ea1i c\u1ee7a Trung Qu\u1ed1c<\/a> \u2013 T\u00ecm hi\u1ec3u v\u1ec1 h\u1ec7 th\u1ed1ng ki\u1ec3m duy\u1ec7t Internet r\u1ed9ng r\u00e3i c\u1ee7a Trung Qu\u1ed1c, m\u1ed9t trong nh\u1eefng h\u1ec7 th\u1ed1ng ch\u1eb7n DNS s\u1edbm nh\u1ea5t v\u00e0 n\u1ed5i ti\u1ebfng nh\u1ea5t.<\/p>\n<\/li>\n

              3. \n

                Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt DNS (DNSSEC)<\/a> \u2013 Hi\u1ec3u c\u00e1ch DNSSEC t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt DNS v\u00e0 c\u00e1ch n\u00f3 c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi vi\u1ec7c ch\u1eb7n DNS.<\/p>\n<\/li>\n<\/ol>","protected":false},"featured_media":476882,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476881","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about DNS Blocking: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is DNS blocking?","answer":"

                DNS blocking is a technique used to prevent access to specific websites or online content by altering the Domain Name System (DNS) resolution process. It is commonly employed by governments, Internet service providers (ISPs), and organizations to enforce censorship, block malicious websites, or restrict access to certain online services.<\/p>"},{"question":"How does DNS blocking work?","answer":"

                DNS blocking involves two main techniques: DNS filtering and DNS redirection. In DNS filtering, specific domain names are filtered out from the resolution process, returning a negative response and blocking access. DNS redirection, on the other hand, alters the DNS resolution response to redirect users to an alternative IP address, often leading them to a different website or page.<\/p>"},{"question":"Why is DNS blocking used?","answer":"

                DNS blocking is used for various purposes, including government censorship to control information flow, parental controls to protect children from accessing inappropriate content, and anti-malware measures to block access to known malicious websites.<\/p>"},{"question":"What are the types of DNS blocking?","answer":"

                DNS blocking can be categorized into different types based on its purpose and scope. Some common types include geo-blocking, government censorship, anti-malware blocking, parental controls, and workplace policies.<\/p>"},{"question":"Can DNS blocking be bypassed?","answer":"

                Yes, DNS blocking can be bypassed using various methods such as using alternative DNS servers, Virtual Private Networks (VPNs), or the Tor network. These workarounds allow users to access blocked content by circumventing the DNS filtering or redirection.<\/p>"},{"question":"What are the challenges of DNS blocking?","answer":"

                DNS blocking may lead to overblocking, where legitimate websites are unintentionally blocked, or underblocking, where determined users can bypass the restrictions. Additionally, the widespread adoption of encrypted DNS (DoH and DoT) and blockchain-based DNS may pose challenges to traditional DNS blocking techniques.<\/p>"},{"question":"How can proxy servers be used with DNS blocking?","answer":"

                Proxy servers play a crucial role in bypassing DNS blocking. Users can route their DNS queries through a proxy server, effectively circumventing the DNS filtering or redirection imposed by the local DNS resolver. This allows users to access blocked content by resolving DNS queries through a proxy server located in a different geographical location with more lenient DNS policies.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476881","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\/476881\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476882"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}