{"id":476898,"date":"2023-08-09T09:05:02","date_gmt":"2023-08-09T09:05:02","guid":{"rendered":""},"modified":"2023-09-05T11:13:38","modified_gmt":"2023-09-05T11:13:38","slug":"dns-hijacking","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-hijacking\/","title":{"rendered":"Chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS"},"content":{"rendered":"<p>Chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 chuy\u1ec3n h\u01b0\u1edbng DNS ho\u1eb7c \u0111\u1ea7u \u0111\u1ed9c DNS, l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c t\u1ed9i ph\u1ea1m m\u1ea1ng s\u1eed d\u1ee5ng \u0111\u1ec3 thao t\u00fang qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS). M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS l\u00e0 chuy\u1ec3n h\u01b0\u1edbng c\u00e1c truy v\u1ea5n DNS h\u1ee3p ph\u00e1p \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u1ed9c h\u1ea1i, t\u1eeb \u0111\u00f3 ki\u1ec3m so\u00e1t ho\u1ea1t \u0111\u1ed9ng li\u00ean l\u1ea1c gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn d\u1ef1 ki\u1ebfn. Cu\u1ed9c t\u1ea5n c\u00f4ng tinh vi n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng, bao g\u1ed3m l\u1eeba \u0111\u1ea3o, \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u v\u00e0 truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o th\u00f4ng tin nh\u1ea1y c\u1ea3m.<\/p>\n<h2>L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>Vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Internet. S\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u00e1ng ch\u00fa \u00fd \u0111\u1ea7u ti\u00ean v\u1ec1 vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS l\u00e0 v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1990 khi nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng m\u1ea1ng b\u1eaft \u0111\u1ea7u khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng trong m\u00e1y ch\u1ee7 DNS. Trong nh\u1eefng n\u0103m qua, c\u00e1c k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS \u0111\u00e3 ph\u00e1t tri\u1ec3n, ng\u00e0y c\u00e0ng tinh vi v\u00e0 kh\u00f3 ph\u00e1t hi\u1ec7n h\u01a1n.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 C\u01b0\u1edbp DNS.<\/h2>\n<p>Vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn vi\u1ec7c thao t\u00fang \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS. H\u1ec7 th\u1ed1ng DNS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 s\u1ed5 \u0111\u1ecba ch\u1ec9 c\u1ee7a Internet, d\u1ecbch c\u00e1c t\u00ean mi\u1ec1n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 c\u00e1c m\u00e1y t\u00ednh s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh v\u1ecb l\u1eabn nhau tr\u00ean m\u1ea1ng. Khi ng\u01b0\u1eddi d\u00f9ng c\u1ed1 g\u1eafng truy c\u1eadp m\u1ed9t trang web, thi\u1ebft b\u1ecb c\u1ee7a h\u1ecd s\u1ebd g\u1eedi truy v\u1ea5n DNS \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS, m\u00e1y ch\u1ee7 n\u00e0y ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<p>Trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS \u0111i\u1ec3n h\u00ecnh, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o m\u00e1y ch\u1ee7 DNS v\u00e0 s\u1eeda \u0111\u1ed5i c\u00e1c b\u1ea3n ghi c\u1ee7a n\u00f3. S\u1ef1 thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi t\u00ean mi\u1ec1n, chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 l\u1eeba \u0111\u1ea3o do k\u1ebb t\u1ea5n c\u00f4ng ki\u1ec3m so\u00e1t. Sau \u0111\u00f3, m\u00e1y ch\u1ee7 DNS b\u1ecb thao t\u00fang s\u1ebd ph\u1ea3n h\u1ed3i c\u00e1c truy v\u1ea5n DNS b\u1eb1ng \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9c h\u1ea1i, d\u1eabn ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u00e1y ch\u1ee7 c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng thay v\u00ec m\u00e1y ch\u1ee7 h\u1ee3p ph\u00e1p.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS.<\/h2>\n<p>Qu\u00e1 tr\u00ecnh chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS bao g\u1ed3m m\u1ed9t s\u1ed1 b\u01b0\u1edbc, m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp th\u00e0nh c\u00f4ng:<\/p>\n<ol>\n<li>\n<p><strong>Th\u1ecfa hi\u1ec7p v\u1edbi m\u00e1y ch\u1ee7 DNS<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng gi\u00e0nh \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp v\u00e0o m\u00e1y ch\u1ee7 DNS m\u1ee5c ti\u00eau b\u1eb1ng c\u00e1ch khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng, s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt x\u00e3 h\u1ed9i ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1eeda \u0111\u1ed5i b\u1ea3n ghi DNS<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng thay \u0111\u1ed5i b\u1ea3n ghi DNS, th\u01b0\u1eddng l\u00e0 b\u1ea3n ghi &#039;A&#039; (\u0110\u1ecba ch\u1ec9) ho\u1eb7c &#039;CNAME&#039; (T\u00ean chu\u1ea9n), \u0111\u1ec3 tr\u1ecf mi\u1ec1n t\u1edbi \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>Lan truy\u1ec1n<\/strong>: V\u00ec c\u00e1c b\u1ea3n ghi DNS c\u00f3 kho\u1ea3ng th\u1eddi gian l\u01b0u trong b\u1ed9 nh\u1edb \u0111\u1ec7m n\u00ean th\u00f4ng tin \u0111\u1ed9c h\u1ea1i s\u1ebd lan truy\u1ec1n kh\u1eafp c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS.<\/p>\n<\/li>\n<li>\n<p><strong>Truy v\u1ea5n ng\u01b0\u1eddi d\u00f9ng<\/strong>: Khi ng\u01b0\u1eddi d\u00f9ng c\u1ed1 g\u1eafng truy c\u1eadp v\u00e0o mi\u1ec1n b\u1ecb \u1ea3nh h\u01b0\u1edfng, thi\u1ebft b\u1ecb c\u1ee7a h\u1ecd s\u1ebd g\u1eedi truy v\u1ea5n DNS.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u1ea3n h\u1ed3i DNS<\/strong>: M\u00e1y ch\u1ee7 DNS b\u1ecb thao t\u00fang s\u1ebd ph\u1ea3n h\u1ed3i truy v\u1ea5n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>Chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng<\/strong>: Thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng thay v\u00ec trang web d\u1ef1 \u0111\u1ecbnh.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>s\u1ef1 t\u00e0ng h\u00ecnh<\/strong>: C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u00f3 th\u1ec3 kh\u00f4ng b\u1ecb ph\u00e1t hi\u1ec7n trong th\u1eddi gian d\u00e0i, cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng thu th\u1eadp th\u00f4ng tin nh\u1ea1y c\u1ea3m ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00e1c \u0111\u1ed9ng lan r\u1ed9ng<\/strong>: V\u00ec DNS l\u00e0 th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng internet n\u00ean c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng v\u00e0 d\u1ecbch v\u1ee5.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u00ean tr\u00ec<\/strong>: M\u1ed9t s\u1ed1 k\u1ebb t\u1ea5n c\u00f4ng thi\u1ebft l\u1eadp quy\u1ec1n ki\u1ec3m so\u00e1t l\u00e2u d\u00e0i \u0111\u1ed1i v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 DNS b\u1ecb x\u00e2m nh\u1eadp, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i ti\u1ebfp t\u1ee5c di\u1ec5n ra.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ed9ng l\u1ef1c \u0111a d\u1ea1ng<\/strong>: Vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau, bao g\u1ed3m gi\u00e1n \u0111i\u1ec7p, \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u, gian l\u1eadn t\u00e0i ch\u00ednh v\u00e0 ki\u1ec3m duy\u1ec7t.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c ki\u1ec3u chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS<\/h2>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ng\u01b0\u1eddi trung gian (MITM)<\/strong><\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng ch\u1eb7n li\u00ean l\u1ea1c gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 DNS h\u1ee3p ph\u00e1p, cung c\u1ea5p ph\u1ea3n h\u1ed3i gi\u1ea3 m\u1ea1o cho c\u00e1c truy v\u1ea5n DNS.<\/td>\n<\/tr>\n<tr>\n<td><strong>Chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS d\u1ef1a tr\u00ean b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/strong><\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng x\u00e2m ph\u1ea1m c\u00e0i \u0111\u1eb7t DNS c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, chuy\u1ec3n h\u01b0\u1edbng t\u1ea5t c\u1ea3 c\u00e1c truy v\u1ea5n DNS \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS \u0111\u1ed9c h\u1ea1i.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u01b0\u1ee3c ph\u1ea9m<\/strong><\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i \u0111\u1ec3 s\u1eeda \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS c\u1ee5c b\u1ed9 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn c\u00e1c trang web \u0111\u1ed9c h\u1ea1i.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ng\u1ed9 \u0111\u1ed9c b\u1ed9 \u0111\u1ec7m DNS<\/strong><\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng ch\u00e8n c\u00e1c b\u1ea3n ghi DNS sai v\u00e0o c\u00e1c m\u00e1y ch\u1ee7 DNS l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m, khi\u1ebfn ch\u00fang cung c\u1ea5p c\u00e1c \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9c h\u1ea1i cho ng\u01b0\u1eddi d\u00f9ng.<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u00e1y ch\u1ee7 DNS gi\u1ea3 m\u1ea1o<\/strong><\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng thi\u1ebft l\u1eadp m\u1ed9t m\u00e1y ch\u1ee7 DNS l\u1eeba \u0111\u1ea3o v\u00e0 ph\u00e1t t\u00e1n n\u00f3 th\u00f4ng qua ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i ho\u1eb7c k\u1ef9 thu\u1eadt x\u00e3 h\u1ed9i \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp.<\/td>\n<\/tr>\n<tr>\n<td><strong>chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n NXDOMAIN<\/strong><\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng ph\u1ea3n h\u1ed3i c\u00e1c truy v\u1ea5n mi\u1ec1n kh\u00f4ng t\u1ed3n t\u1ea1i b\u1eb1ng \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9c h\u1ea1i thay v\u00ec ph\u1ea3n h\u1ed3i l\u1ed7i d\u1ef1 ki\u1ebfn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS, 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<p>Vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p><strong>T\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o<\/strong>: Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c trang web gi\u1ea3 m\u1ea1o b\u1eaft ch\u01b0\u1edbc c\u00e1c trang web h\u1ee3p ph\u00e1p, l\u1eeba h\u1ecd ti\u1ebft l\u1ed9 th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 th\u00f4ng tin \u0111\u0103ng nh\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n ph\u1ed1i ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<\/strong>: Vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c trang web l\u01b0u tr\u1eef ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c ph\u00e2n ph\u1ed1i ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>T\u1ea5n c\u00f4ng trung gian<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 ch\u1eb7n d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00f4ng tin x\u00e1c th\u1ef1c \u0111\u0103ng nh\u1eadp ho\u1eb7c th\u00f4ng tin t\u00e0i ch\u00ednh, trong qu\u00e1 tr\u00ecnh truy\u1ec1n.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m duy\u1ec7t v\u00e0 gi\u00e1m s\u00e1t<\/strong>: Vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u00ednh ph\u1ee7 ho\u1eb7c ISP t\u1eadn d\u1ee5ng \u0111\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 trang web nh\u1ea5t \u0111\u1ecbnh ho\u1eb7c gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<\/ol>\n<p>\u0110\u1ec3 ch\u1ed1ng l\u1ea1i vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS, m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai:<\/p>\n<ol>\n<li>\n<p><strong>DNSSEC (Ph\u1ea7n m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n)<\/strong>: DNSSEC b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1eb1ng c\u00e1ch k\u00fd \u0111i\u1ec7n t\u1eed d\u1eef li\u1ec7u DNS \u0111\u1ec3 ng\u0103n ch\u1eb7n gi\u1ea3 m\u1ea1o.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ecdc v\u00e0 gi\u00e1m s\u00e1t DNS<\/strong>: Th\u01b0\u1eddng xuy\u00ean gi\u00e1m s\u00e1t l\u01b0u l\u01b0\u1ee3ng DNS v\u00e0 tri\u1ec3n khai l\u1ecdc DNS c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 ch\u1eb7n c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>X\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA)<\/strong>: MFA b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt, gi\u1ea3m nguy c\u01a1 truy c\u1eadp tr\u00e1i ph\u00e9p ngay c\u1ea3 khi x\u1ea3y ra t\u00ecnh tr\u1ea1ng chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS<\/strong><\/td>\n<td>Thao t\u00fang \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u1ed9c h\u1ea1i.<\/td>\n<\/tr>\n<tr>\n<td><strong>Gi\u1ea3 m\u1ea1o DNS<\/strong><\/td>\n<td>L\u00e0m gi\u1ea3 d\u1eef li\u1ec7u DNS \u0111\u1ec3 l\u1eeba ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 IP kh\u00e1c.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ng\u1ed9 \u0111\u1ed9c DNS<\/strong><\/td>\n<td>L\u00e0m h\u1ecfng d\u1eef li\u1ec7u b\u1ed9 \u0111\u1ec7m DNS tr\u00ean m\u00e1y ch\u1ee7 DNS \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c trang web \u0111\u1ed9c h\u1ea1i.<\/td>\n<\/tr>\n<tr>\n<td><strong>DNSSEC (Ph\u1ea7n m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n)<\/strong><\/td>\n<td>M\u1ed9t b\u1ed9 ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ed5 sung t\u00ednh b\u1ea3o m\u1eadt cho giao th\u1ee9c DNS, ng\u0103n ch\u1eb7n vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Vi\u1ec5n c\u1ea3nh v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, c\u00e1c k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS c\u0169ng v\u1eady. C\u00e1c quan \u0111i\u1ec3m trong t\u01b0\u01a1ng lai c\u1ea7n xem x\u00e9t bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Ph\u00e1t hi\u1ec7n d\u1ef1a tr\u00ean AI<\/strong>: S\u1eed d\u1ee5ng tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 h\u1ecdc m\u00e1y \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS trong th\u1eddi gian th\u1ef1c.<\/p>\n<\/li>\n<li>\n<p><strong>DNS d\u1ef1a tr\u00ean chu\u1ed7i kh\u1ed1i<\/strong>: Tri\u1ec3n khai c\u00f4ng ngh\u1ec7 blockchain \u0111\u1ec3 ph\u00e2n c\u1ea5p v\u00e0 b\u1ea3o m\u1eadt c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ebfn tr\u00fac kh\u00f4ng tin c\u1eady<\/strong>: \u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng tin c\u1eady gi\u1ea3 \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c ph\u00e2n \u0111o\u1ea1n m\u1ea1ng \u0111\u1ec1u kh\u00f4ng \u0111\u00e1ng tin c\u1eady, l\u00e0m gi\u1ea3m t\u00e1c \u0111\u1ed9ng c\u1ee7a vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean quan \u0111\u1ebfn vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS \u0111\u1ec3 th\u00eam m\u1ed9t l\u1edbp che gi\u1ea5u b\u1ed5 sung v\u00e0o c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng. B\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp th\u00f4ng qua m\u00e1y ch\u1ee7 proxy do k\u1ebb t\u1ea5n c\u00f4ng ki\u1ec3m so\u00e1t, ch\u00fang c\u00f3 th\u1ec3 che gi\u1ea5u danh t\u00ednh v\u00e0 \u00fd \u0111\u1ecbnh c\u1ee7a m\u00ecnh h\u01a1n n\u1eefa. H\u01a1n n\u1eefa, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 thao t\u00fang qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS cho m\u00e1y ch\u1ee7 proxy, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng tin r\u1eb1ng h\u1ecd \u0111ang k\u1ebft n\u1ed1i v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 h\u1ee3p ph\u00e1p trong khi b\u1ecb chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c d\u1ecbch v\u1ee5 \u0111\u1ed9c h\u1ea1i.<\/p>\n<p>\u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 c\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy ph\u1ea3i tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd \u0111\u1ec3 ng\u0103n ch\u1eb7n m\u00e1y ch\u1ee7 c\u1ee7a h\u1ecd b\u1ecb khai th\u00e1c trong c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS. C\u01a1 ch\u1ebf gi\u00e1m s\u00e1t, m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u00fap b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS v\u00e0 c\u00e1ch b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i n\u00f3, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/us-cert.cisa.gov\/ncas\/alerts\/TA18-024A\" target=\"_new\" rel=\"noopener nofollow\">C\u1ea3nh b\u00e1o US-CERT (TA18-024A) \u2013 Chi\u1ebfn d\u1ecbch chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS<\/a><\/li>\n<li><a href=\"https:\/\/www.imperva.com\/learn\/application-security\/dns-hijacking\/\" target=\"_new\" rel=\"noopener nofollow\">Chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS: C\u00e1c lo\u1ea1i, k\u1ef9 thu\u1eadt v\u00e0 c\u00e1ch b\u1ea3o v\u1ec7<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/dnssec\/how-does-dnssec-work\/\" target=\"_new\" rel=\"noopener nofollow\">DNSSEC l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/what-is-zero-trust.html\" target=\"_new\" rel=\"noopener nofollow\">C\u00e1ch tri\u1ec3n khai b\u1ea3o m\u1eadt Zero Trust trong t\u1ed5 ch\u1ee9c c\u1ee7a b\u1ea1n<\/a><\/li>\n<\/ol>\n<p>H\u00e3y nh\u1edb r\u1eb1ng vi\u1ec7c c\u1eadp nh\u1eadt th\u00f4ng tin v\u00e0 tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt t\u1ed1t nh\u1ea5t l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi vi\u1ec7c chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n DNS v\u00e0 c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng kh\u00e1c.<\/p>","protected":false},"featured_media":476899,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476898","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>DNS Hijacking: An Encyclopedia Article<\/mark>","faq_items":[{"question":"What is DNS hijacking?","answer":"<p>DNS hijacking, also known as DNS redirection or DNS poisoning, is a malicious technique used by cybercriminals to manipulate the Domain Name System (DNS) resolution process. The aim of DNS hijacking is to redirect legitimate DNS queries to a malicious server, thereby controlling the communication between users and the intended online services.<\/p>"},{"question":"How does DNS hijacking work?","answer":"<p>DNS hijacking involves compromising a DNS server and altering its records. The attacker changes the IP address associated with a domain name, diverting traffic to a rogue server they control. When users try to access the affected domain, their devices receive responses with the malicious IP address, redirecting them to the attacker's server.<\/p>"},{"question":"What are the key features of DNS hijacking?","answer":"<p>DNS hijacking is stealthy, widespread in impact, persistent, and serves diverse motivations such as espionage, data theft, financial fraud, and censorship.<\/p>"},{"question":"What are the types of DNS hijacking?","answer":"<ul><li>Man-in-the-Middle (MITM): Attackers intercept communication between users and legitimate DNS servers, providing falsified responses.<\/li><li>Router-based DNS hijacking: Attackers compromise a router's DNS settings, redirecting all queries to a malicious DNS server.<\/li><li>Pharming: Attackers use malware to modify a user's local DNS settings, redirecting traffic to malicious sites.<\/li><li>DNS Cache Poisoning: Attackers inject false DNS records into caching DNS servers, serving malicious IPs to users.<\/li><li>Rogue DNS server: Attackers set up a rogue DNS server to redirect traffic via malware or social engineering.<\/li><li>NXDOMAIN hijacking: Attackers respond to non-existent domain queries with malicious IPs instead of error responses.<\/li><\/ul>"},{"question":"How can DNS hijacking be used, and what are the problems and solutions?","answer":"<p>DNS hijacking can be utilized for phishing, malware distribution, man-in-the-middle attacks, censorship, and surveillance. To combat it, implement DNSSEC, DNS filtering and monitoring, and Multi-Factor Authentication (MFA).<\/p>"},{"question":"What are the perspectives and future technologies related to DNS hijacking?","answer":"<p>The future may bring AI-based detection, blockchain-based DNS, and zero-trust architecture to combat DNS hijacking more effectively.<\/p>"},{"question":"How are proxy servers associated with DNS hijacking?","answer":"<p>Proxy servers can be used with DNS hijacking to add an extra layer of obfuscation, hiding the attacker's identity. Proxy server providers like OneProxy must implement robust security measures to prevent their servers from being exploited in such attacks.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476898","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\/476898\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476899"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}