{"id":476906,"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-ns-record","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-ns-record\/","title":{"rendered":"B\u1ea3n ghi DNS NS"},"content":{"rendered":"<p>B\u1ea3n ghi NS DNS (H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n) l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS, \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t li\u00ean k\u1ebft quan tr\u1ecdng gi\u1eefa t\u00ean mi\u1ec1n v\u00e0 m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang. NS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a \u201cM\u00e1y ch\u1ee7 t\u00ean\u201d v\u00e0 nh\u1eefng b\u1ea3n ghi n\u00e0y x\u00e1c \u0111\u1ecbnh m\u00e1y ch\u1ee7 t\u00ean n\u00e0o ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u1eed l\u00fd c\u00e1c truy v\u1ea5n DNS cho m\u1ed9t mi\u1ec1n c\u1ee5 th\u1ec3. Khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp t\u00ean mi\u1ec1n v\u00e0o tr\u00ecnh duy\u1ec7t web c\u1ee7a h\u1ecd, b\u1ea3n ghi DNS NS s\u1ebd gi\u00fap chuy\u1ec3n y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 t\u00ean th\u00edch h\u1ee3p, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn \u0111\u00fang m\u00e1y ch\u1ee7 web l\u01b0u tr\u1eef trang web.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a b\u1ea3n ghi DNS NS v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean nh\u1eafc \u0111\u1ebfn n\u00f3<\/h2>\n<p>H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1980 nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1eb7t t\u00ean ph\u00e2n t\u00e1n nh\u1eb1m cung c\u1ea5p m\u1ed9t c\u00e1ch d\u1ec5 \u0111\u1ecdc h\u01a1n cho con ng\u01b0\u1eddi \u0111\u1ec3 truy c\u1eadp t\u00e0i nguy\u00ean internet. Tr\u01b0\u1edbc DNS, t\u1ec7p HOSTS.TXT t\u1eadp trung \u0111\u00e3 \u0111\u01b0\u1ee3c duy tr\u00ec nh\u01b0ng n\u00f3 tr\u1edf n\u00ean kh\u00f4ng th\u1ef1c t\u1ebf khi s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7 tr\u00ean internet t\u0103ng l\u00ean. Nhu c\u1ea7u ph\u00e2n ph\u1ed1i th\u00f4ng tin n\u00e0y v\u00e0 tr\u00e1nh m\u1ed9t \u0111i\u1ec3m th\u1ea5t b\u1ea1i \u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a DNS.<\/p>\n<p>Kh\u00e1i ni\u1ec7m m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n, \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng b\u1ea3n ghi NS, \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u trong RFC 1034 v\u00e0 RFC 1035, xu\u1ea5t b\u1ea3n v\u00e0o th\u00e1ng 11 n\u0103m 1987. C\u00e1c t\u00e0i li\u1ec7u n\u00e0y ph\u00e1c th\u1ea3o ki\u1ebfn tr\u00fac v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng DNS, bao g\u1ed3m c\u1ea3 b\u1ea3n ghi NS. B\u1ea3n ghi NS \u0111\u00e3 l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS k\u1ec3 t\u1eeb khi th\u00e0nh l\u1eadp v\u00e0 v\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Internet.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 b\u1ea3n ghi DNS NS \u2013 M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 B\u1ea3n ghi DNS NS<\/h2>\n<p>B\u1ea3n ghi DNS NS r\u1ea5t c\u1ea7n thi\u1ebft cho vi\u1ec7c ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang. M\u1ed7i mi\u1ec1n ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh b\u1eb1ng b\u1ea3n ghi NS, ch\u1ecbu tr\u00e1ch nhi\u1ec7m l\u01b0u tr\u1eef b\u1ea3n ghi DNS cho mi\u1ec1n \u0111\u00f3.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a b\u1ea3n ghi DNS NS \u2013 C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea3n ghi DNS NS<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a b\u1ea3n ghi DNS NS r\u1ea5t \u0111\u01a1n gi\u1ea3n. N\u00f3 bao g\u1ed3m m\u1ed9t t\u00ean mi\u1ec1n v\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 t\u00ean. T\u00ean mi\u1ec1n x\u00e1c \u0111\u1ecbnh v\u00f9ng m\u00e0 m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n v\u00e0 \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 t\u00ean cho bi\u1ebft \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 c\u00f3 th\u1ea9m quy\u1ec1n.<\/p>\n<p>Khi ng\u01b0\u1eddi d\u00f9ng truy v\u1ea5n m\u1ed9t t\u00ean mi\u1ec1n, tr\u00ecnh ph\u00e2n gi\u1ea3i DNS tr\u01b0\u1edbc ti\u00ean s\u1ebd t\u00ecm b\u1ea3n ghi NS \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n. Sau khi tr\u00ecnh ph\u00e2n gi\u1ea3i l\u1ea5y \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n, n\u00f3 s\u1ebd g\u1eedi m\u1ed9t truy v\u1ea5n m\u1edbi c\u1ee5 th\u1ec3 \u0111\u1ebfn m\u00e1y ch\u1ee7 t\u00ean \u0111\u00f3 \u0111\u1ec3 t\u00ecm n\u1ea1p th\u00f4ng tin DNS c\u1ea7n thi\u1ebft cho mi\u1ec1n. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e2n gi\u1ea3i DNS \u0111\u1ec7 quy.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a b\u1ea3n ghi DNS NS<\/h2>\n<p>B\u1ea3n ghi DNS NS \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p DNS, cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng v\u00e0 l\u1ee3i \u00edch ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>D\u1ef1 ph\u00f2ng v\u00e0 dung sai l\u1ed7i:<\/strong> B\u1eb1ng c\u00e1ch cho ph\u00e9p nhi\u1ec1u b\u1ea3n ghi NS cho m\u1ed9t t\u00ean mi\u1ec1n, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 ch\u1ec9 \u0111\u1ecbnh m\u1ed9t s\u1ed1 m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n. S\u1ef1 d\u01b0 th\u1eeba n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i, v\u00ec n\u1ebfu m\u1ed9t m\u00e1y ch\u1ee7 t\u00ean kh\u00f4ng kh\u1ea3 d\u1ee5ng th\u00ec nh\u1eefng m\u00e1y ch\u1ee7 kh\u00e1c v\u1eabn c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c truy v\u1ea5n DNS cho mi\u1ec1n.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e1i \u0111o\u00e0n:<\/strong> B\u1ea3n ghi NS cho ph\u00e9p ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n \u1ee7y quy\u1ec1n t\u00ean mi\u1ec1n ph\u1ee5 cho c\u00e1c m\u00e1y ch\u1ee7 t\u00ean kh\u00e1c nhau, mang l\u1ea1i s\u1ef1 linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong vi\u1ec7c qu\u1ea3n l\u00fd c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng l\u1edbn v\u00e0 ph\u1ee9c t\u1ea1p.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> Vi\u1ec7c ph\u00e2n ph\u1ed1i b\u1ea3n ghi NS tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e2n b\u1eb1ng t\u1ea3i v\u00ec tr\u00ecnh ph\u00e2n gi\u1ea3i DNS c\u00f3 th\u1ec3 ch\u1ecdn ng\u1eabu nhi\u00ean m\u1ed9t trong c\u00e1c m\u00e1y ch\u1ee7 t\u00ean, ph\u00e2n ph\u1ed1i t\u1ea3i truy v\u1ea5n m\u1ed9t c\u00e1ch \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i b\u1ea3n ghi DNS NS<\/h2>\n<p>B\u1ea3n ghi DNS NS c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau d\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh v\u00e0 y\u00eau c\u1ea7u c\u1ee7a mi\u1ec1n. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\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>Tr\u00ean m\u1ea1ng)<\/td>\n<td>B\u1ea3n ghi NS ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho h\u1ea7u h\u1ebft c\u00e1c t\u00ean mi\u1ec1n internet.<\/td>\n<\/tr>\n<tr>\n<td>CH (H\u1ed7n lo\u1ea1n)<\/td>\n<td>Hi\u1ebfm khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, ch\u1ee7 y\u1ebfu \u0111\u1ec3 truy v\u1ea5n tr\u1ea1ng th\u00e1i m\u00e1y ch\u1ee7.<\/td>\n<\/tr>\n<tr>\n<td>HS (Hesiod)<\/td>\n<td>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng kh\u00f4ng gian t\u00ean Hesiod.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng b\u1ea3n ghi DNS NS, 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<h3>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng b\u1ea3n ghi DNS NS:<\/h3>\n<ol>\n<li>\n<p><strong>\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n:<\/strong> Trong qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n cho t\u00ean mi\u1ec1n, \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua b\u1ea3n ghi NS.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd v\u00f9ng DNS:<\/strong> Qu\u1ea3n tr\u1ecb vi\u00ean s\u1eed d\u1ee5ng b\u1ea3n ghi NS \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00f9ng DNS v\u00e0 \u1ee7y quy\u1ec1n t\u00ean mi\u1ec1n ph\u1ee5 cho c\u00e1c m\u00e1y ch\u1ee7 t\u00ean kh\u00e1c nhau.<\/p>\n<\/li>\n<li>\n<p><strong>Thay \u0111\u1ed5i nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef:<\/strong> Khi di chuy\u1ec3n m\u1ed9t trang web sang nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef m\u1edbi, vi\u1ec7c c\u1eadp nh\u1eadt b\u1ea3n ghi NS cho ph\u00e9p m\u00e1y ch\u1ee7 t\u00ean c\u1ee7a nh\u00e0 cung c\u1ea5p m\u1edbi x\u1eed l\u00fd c\u00e1c truy v\u1ea5n DNS.<\/p>\n<\/li>\n<\/ol>\n<h3>C\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng b\u1ea3n ghi DNS NS:<\/h3>\n<ol>\n<li>\n<p><strong>\u0110\u1ed9 tr\u1ec5 lan truy\u1ec1n:<\/strong> Khi thay \u0111\u1ed5i b\u1ea3n ghi NS, \u0111\u1ed9 tr\u1ec5 truy\u1ec1n DNS c\u00f3 th\u1ec3 x\u1ea3y ra, d\u1eabn \u0111\u1ebfn ph\u1ea3n h\u1ed3i kh\u00f4ng nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n c\u1ea7u. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 h\u1ea1 th\u1ea5p TTL (Th\u1eddi gian t\u1ed3n t\u1ea1i) c\u1ee7a b\u1ea3n ghi DNS tr\u01b0\u1edbc khi thay \u0111\u1ed5i, gi\u1ea3m th\u1eddi gian truy\u1ec1n b\u00e1.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3n ghi NS b\u1ecb \u0111\u1ecbnh c\u1ea5u h\u00ecnh sai:<\/strong> B\u1ea3n ghi NS kh\u00f4ng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ed7i ph\u00e2n gi\u1ea3i DNS. Qu\u1ea3n tr\u1ecb vi\u00ean ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea3n ghi NS \u0111\u01b0\u1ee3c \u0111\u1eb7t ch\u00ednh x\u00e1c v\u00e0 tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP m\u00e1y ch\u1ee7 t\u00ean h\u1ee3p l\u1ec7.<\/p>\n<\/li>\n<li>\n<p><strong>Ng\u1ed9 \u0111\u1ed9c b\u1ed9 \u0111\u1ec7m DNS:<\/strong> T\u00e1c nh\u00e2n \u0111\u1ed9c h\u1ea1i c\u00f3 th\u1ec3 c\u1ed1 g\u1eafng \u0111\u1ea7u \u0111\u1ed9c b\u1ed9 \u0111\u1ec7m DNS b\u1eb1ng b\u1ea3n ghi NS kh\u00f4ng ch\u00ednh x\u00e1c. Vi\u1ec7c tri\u1ec3n khai DNSSEC (Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n) c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng nh\u01b0 v\u1eady b\u1eb1ng c\u00e1ch th\u00eam ch\u1eef k\u00fd s\u1ed1 v\u00e0o d\u1eef li\u1ec7u DNS.<\/p>\n<\/li>\n<\/ol>\n<h2>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<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>B\u1ea3n ghi DNS NS<\/td>\n<td>Ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n cho m\u1ed9t t\u00ean mi\u1ec1n.<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n ghi DNS A<\/td>\n<td>\u00c1nh x\u1ea1 t\u00ean mi\u1ec1n t\u1edbi \u0111\u1ecba ch\u1ec9 IPv4.<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n ghi DNS AAAA<\/td>\n<td>\u00c1nh x\u1ea1 t\u00ean mi\u1ec1n t\u1edbi \u0111\u1ecba ch\u1ec9 IPv6.<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n ghi DNS CNAME<\/td>\n<td>T\u1ea1o b\u00ed danh cho m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c (t\u00ean chu\u1ea9n).<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n ghi DNS MX<\/td>\n<td>X\u00e1c \u0111\u1ecbnh c\u00e1c m\u00e1y ch\u1ee7 th\u01b0 ch\u1ecbu tr\u00e1ch nhi\u1ec7m nh\u1eadn email cho m\u1ed9t mi\u1ec1n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn b\u1ea3n ghi DNS NS<\/h2>\n<p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS li\u00ean t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c th\u00e1ch th\u1ee9c m\u1edbi n\u1ed5i v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t. M\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn b\u1ea3n ghi DNS NS bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>\u00c1p d\u1ee5ng IPv6:<\/strong> Khi vi\u1ec7c \u00e1p d\u1ee5ng IPv6 ng\u00e0y c\u00e0ng t\u0103ng, c\u00e1c b\u1ea3n ghi DNS NS s\u1ebd c\u1ea7n h\u1ed7 tr\u1ee3 \u0111\u1ecba ch\u1ec9 IPv6 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>DNS ph\u00e2n ph\u1ed1i:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng s\u1ed5 c\u00e1i ph\u00e2n t\u00e1n ho\u1eb7c c\u00f4ng ngh\u1ec7 chu\u1ed7i kh\u1ed1i c\u00f3 th\u1ec3 mang l\u1ea1i nh\u1eefng c\u1ea3i ti\u1ebfn v\u1ec1 ph\u00e2n c\u1ea5p v\u00e0 b\u1ea3o m\u1eadt DNS.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi b\u1ea3n ghi DNS NS<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 web, chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u c\u1ee7a m\u00e1y kh\u00e1ch v\u00e0 tr\u1ea3 l\u1eddi ph\u1ea3n h\u1ed3i thay m\u1eb7t cho m\u00e1y ch\u1ee7. M\u1eb7c d\u00f9 m\u00e1y ch\u1ee7 proxy kh\u00f4ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp v\u1edbi b\u1ea3n ghi DNS NS nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng gi\u00e1n ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS b\u1eb1ng c\u00e1ch:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ed9 nh\u1edb \u0111\u1ec7m:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u01b0u tr\u1eef ph\u1ea3n h\u1ed3i DNS, gi\u1ea3m th\u1eddi gian truy v\u1ea5n DNS v\u00e0 \u0111\u1ed9 tr\u1ec5 t\u1ed5ng th\u1ec3 cho m\u00e1y kh\u00e1ch.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn c\u1ee7a kh\u00e1ch h\u00e0ng tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 web ph\u1ee5 tr\u1ee3, \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t trang web.<\/p>\n<\/li>\n<li>\n<p><strong>An ninh v\u00e0 s\u1ef1 ri\u00eang t\u01b0:<\/strong> Proxy c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 b\u1eb1ng c\u00e1ch \u1ea9n \u0111\u1ecba ch\u1ec9 IP c\u1ee7a kh\u00e1ch h\u00e0ng kh\u1ecfi m\u00e1y ch\u1ee7 web v\u00e0 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1034\" target=\"_new\" rel=\"noopener nofollow\">RFC 1034 \u2013 T\u00ean mi\u1ec1n \u2013 Kh\u00e1i ni\u1ec7m v\u00e0 ti\u1ec7n \u00edch<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1035\" target=\"_new\" rel=\"noopener nofollow\">RFC 1035 \u2013 T\u00ean mi\u1ec1n \u2013 Tri\u1ec3n khai v\u00e0 \u0111\u1eb7c t\u1ea3<\/a><\/li>\n<li><a href=\"https:\/\/www.oreilly.com\/library\/view\/dns-and-bind\/9781449305050\/\" target=\"_new\" rel=\"noopener nofollow\">DNS v\u00e0 BIND<\/a> c\u1ee7a Cricket Liu v\u00e0 Paul Albitz<\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/what-is-dns\/\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1edbi thi\u1ec7u v\u1ec1 DNS<\/a> \u2013 Trung t\u00e2m h\u1ecdc t\u1eadp Cloudflare<\/li>\n<li><a href=\"https:\/\/www.internetsociety.org\/resources\/doc\/2022\/dnssec-a-primer\/\" target=\"_new\" rel=\"noopener nofollow\">DNSSEC: S\u01a1 l\u01b0\u1ee3c<\/a> \u2013 X\u00e3 h\u1ed9i Internet<\/li>\n<\/ul>","protected":false},"featured_media":476907,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476906","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>DNS NS Record: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is a DNS NS record?","answer":"<p>A DNS NS record, also known as a Name Server record, is an essential component of the Domain Name System (DNS). It specifies the authoritative nameservers responsible for handling DNS queries for a specific domain. When you enter a domain name in your web browser, the DNS NS record helps direct the request to the correct nameserver, ensuring you reach the right web server hosting the website.<\/p>"},{"question":"How did the DNS NS record originate?","answer":"<p>The DNS NS record was introduced as part of the Domain Name System in the 1980s. Before DNS, a centralized HOSTS.TXT file managed internet hosts, but it became impractical as the internet grew. The need for distributing information and avoiding single points of failure led to the development of DNS. The concept of authoritative nameservers, represented by the NS record, was defined in RFC 1034 and RFC 1035 published in November 1987.<\/p>"},{"question":"How does the DNS NS record work internally?","answer":"<p>The internal structure of a DNS NS record is straightforward. It comprises a domain name and a nameserver address. The domain name indicates the zone for which the nameserver is authoritative, and the nameserver address specifies the IP address of the authoritative server. When you query a domain name, your DNS resolver looks for the NS record to determine the authoritative nameserver. Then, it sends a new query specifically to that nameserver to fetch the required DNS information for the domain.<\/p>"},{"question":"What are the key features of the DNS NS record?","answer":"<p>The DNS NS record offers several key features:<\/p><ol><li>Redundancy and Fault Tolerance: Multiple NS records can designate several authoritative nameservers, ensuring fault tolerance and reliability.<\/li><li>Delegation: NS records allow domain owners to delegate subdomains to different nameservers, facilitating scalability and management.<\/li><li>Load Balancing: Distributing NS records across multiple nameservers enables load balancing, enhancing query response times.<\/li><\/ol>"},{"question":"What types of DNS NS records exist?","answer":"<p>DNS NS records can be of different types based on domain configurations:<\/p><ul><li>IN (Internet): Standard NS record used for most internet domains.<\/li><li>CH (Chaos): Rarely used, primarily for querying server status.<\/li><li>HS (Hesiod): Used in Hesiod namespace systems.<\/li><\/ul>"},{"question":"How can the DNS NS record be used, and what problems may arise?","answer":"<p>Ways to use DNS NS record:<\/p><ol><li>Domain Registration: During registration, users specify the authoritative nameservers for the domain using NS records.<\/li><li>DNS Zone Management: NS records help administrators manage DNS zones and delegate subdomains to different nameservers.<\/li><li>Changing Hosting Providers: Updating NS records during a migration allows new providers' nameservers to handle DNS queries.<\/li><\/ol><p>Potential problems and solutions:<\/p><ol><li>Propagation Delays: Changing NS records may cause propagation delays. Lowering TTL before the change reduces this time.<\/li><li>Misconfigured NS Records: Incorrect NS records can lead to resolution failures. Ensuring correct settings and valid IP addresses is vital.<\/li><li>DNS Cache Poisoning: Implementing DNSSEC protects against malicious attempts to poison DNS caches with incorrect NS records.<\/li><\/ol>"},{"question":"How does the DNS NS record compare to similar DNS record types?","answer":"<p>The DNS NS record serves a specific purpose - specifying authoritative nameservers. Other DNS record types include:<\/p><ul><li>DNS A Record: Maps a domain name to an IPv4 address.<\/li><li>DNS AAAA Record: Maps a domain name to an IPv6 address.<\/li><li>DNS CNAME Record: Creates an alias for another domain name (canonical name).<\/li><li>DNS MX Record: Identifies mail servers responsible for receiving email for a domain.<\/li><\/ul>"},{"question":"What does the future hold for DNS NS records?","answer":"<p>The DNS infrastructure continually evolves to address challenges and improve performance. Future developments may include improved IPv6 support and the potential integration of distributed ledgers or blockchain technology for enhanced decentralization and security.<\/p>"},{"question":"How are proxy servers associated with DNS NS records?","answer":"<p>While proxy servers are not directly related to DNS NS records, they can influence DNS resolution indirectly. Proxies can cache DNS responses, achieve load balancing, enhance security and privacy, all of which contribute to an improved browsing experience for users.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476906","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\/476906\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476907"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}