{"id":15670,"date":"2021-03-13T10:00:00","date_gmt":"2021-03-13T03:00:00","guid":{"rendered":"https:\/\/blog.tinohost.com\/?p=699"},"modified":"2023-11-29T09:53:16","modified_gmt":"2023-11-29T02:53:16","slug":"dns-soa-la-gi","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/dns-soa-la-gi\/","title":{"rendered":"DNS: SOA l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u v\u1ec1 c\u1ea5u tr\u00fac DNS: SOA"},"content":{"rendered":"\n

Khi l\u00e0m vi\u1ec7c v\u1edbi t\u00ean mi\u1ec1n, b\u1ea1n s\u1ebd th\u1ea5y c\u00f3 r\u1ea5t nhi\u1ec1u vi\u1ec7c c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n khi tr\u1ecf t\u00ean mi\u1ec1n ho\u1eb7c t\u00ecm hi\u1ec3u chuy\u00ean s\u00e2u h\u01a1n v\u1ec1 t\u00ean mi\u1ec1n. Trong b\u00e0i vi\u1ebft n\u00e0y, TinoHost s\u1ebd gi\u1edbi thi\u1ec7u v\u1edbi b\u1ea1n v\u1ec1 DNS SOA, ch\u00fang ta c\u00f9ng nhau \u0111i v\u00e0o t\u00ecm hi\u1ec3u DNS: SOA l\u00e0 g\u00ec nh\u00e9!<\/strong><\/p>\n\n\n\n

T\u00ecm hi\u1ec3u v\u1ec1 DNS: SOA<\/strong><\/h2>\n\n\n\n

DNS l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n

DNS <\/a>– Domain Name System<\/em> (t\u1ea1m d\u1ecbch: H\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n)<\/strong> <\/p>\n\n\n\n

DNS vi\u1ebft t\u1eaft c\u1ee7a “Domain Name System<\/em>” (H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n). \u0110\u00e2y l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u d\u00f9ng \u0111\u1ec3 \u00e1nh x\u1ea1 c\u00e1c t\u00ean mi\u1ec1n<\/a> th\u00e0nh \u0111\u1ecba ch\u1ec9 IP<\/a> t\u01b0\u01a1ng \u1ee9ng \u0111\u1ec3 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 hi\u1ec3u v\u00e0 t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau tr\u00ean Internet<\/a>. DNS gi\u00fap gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 vi\u1ec7c ghi nh\u1edb c\u00e1c \u0111\u1ecba ch\u1ec9 IP c\u1ee7a c\u00e1c trang web ho\u1eb7c d\u1ecbch v\u1ee5 m\u1ea1ng, thay v\u00ec ph\u1ea3i ghi nh\u1edb chu\u1ed7i s\u1ed1 kh\u00f3 nh\u1edb.<\/p>\n\n\n

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\"DNS-la-gi\"
DNS l\u00e0 g\u00ec?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n

Khi b\u1ea1n nh\u1eadp m\u1ed9t t\u00ean mi\u1ec1n v\u00e0o tr\u00ecnh duy\u1ec7t web, tr\u00ecnh duy\u1ec7t s\u1ebd g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS. M\u00e1y ch\u1ee7 DNS sau \u0111\u00f3 s\u1ebd tr\u1ea3 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng cho t\u00ean mi\u1ec1n \u0111\u00f3, cho ph\u00e9p tr\u00ecnh duy\u1ec7t ti\u1ebfp t\u1ee5c k\u1ebft n\u1ed1i \u0111\u1ebfn \u0111\u00fang m\u00e1y ch\u1ee7 \u0111\u1ec3 t\u1ea3i trang web c\u1ea7n truy c\u1eadp. DNS c\u0169ng th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh ng\u01b0\u1ee3c l\u1ea1i, g\u1ecdi l\u00e0 “\u0111\u1ea3o ng\u01b0\u1ee3c DNS”, \u0111\u1ec3 \u00e1nh x\u1ea1 \u0111\u1ecba ch\u1ec9 IP th\u00e0nh t\u00ean mi\u1ec1n.<\/p>\n\n\n\n

H\u1ec7 th\u1ed1ng DNS r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Internet, gi\u00fap ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng truy c\u1eadp c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 m\u1ea1ng th\u00f4ng qua t\u00ean mi\u1ec1n thay v\u00ec ph\u1ea3i ghi nh\u1edb \u0111\u1ecba ch\u1ec9 IP.<\/p>\n\n\n\n

Nhi\u1ec7m v\u1ee5 c\u01a1 b\u1ea3n c\u1ee7a DNS l\u00e0 “d\u1ecbch” m\u1ed9t t\u00ean mi\u1ec1n quen thu\u1ed9c v\u1edbi ng\u01b0\u1eddi d\u00f9ng (v\u00ed d\u1ee5: tino.vn\/blog<\/a>) th\u00e0nh m\u1ed9t \u0111\u1ecba ch\u1ec9 IP (v\u00ed d\u1ee5: 45.77.251.173) m\u00e0 c\u00e1c m\u00e1y t\u00ednh s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u1eadn d\u1ea1ng ch\u00ednh x\u00e1c nhau tr\u00ean h\u1ec7 th\u1ed1ng m\u1ea1ng to\u00e0n c\u1ea7u.<\/p>\n\n\n\n

DNS: SOA l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n

B\u1ea3n ghi SOA (SOA Record)<\/a> l\u00e0 ch\u1eef vi\u1ebft t\u1eaft c\u1ee7a “Start of Authority<\/strong>” l\u00e0 th\u00f4ng tin x\u00e1c nh\u1eadn t\u1eeb ph\u00eda m\u00e1y ch\u1ee7 ti\u1ebfp nh\u1eadn c\u1ee7a t\u00ean mi\u1ec1n. <\/p>\n\n\n\n

Th\u00f4ng th\u01b0\u1eddng, m\u1ed7i t\u00ean mi\u1ec1n s\u1ebd s\u1eed d\u1ee5ng m\u1ed9t c\u1eb7p DNS n\u00e0o \u0111\u00f3 \u0111\u1ec3 tr\u1ecf v\u1ec1 1 ho\u1eb7c nhi\u1ec1u m\u00e1y ch\u1ee7 DNS. Sau \u0111\u00f3, c\u00e1c m\u00e1y ch\u1ee7 DNS c\u00f3 tr\u00e1ch nhi\u1ec7m cung c\u1ea5p th\u00f4ng tin b\u1ea3n ghi DNS c\u1ee7a h\u1ec7 th\u1ed1ng cho t\u00ean mi\u1ec1n n\u00e0y \u0111\u1ec3 n\u00f3 ho\u1ea1t \u0111\u1ed9ng.  Trong qu\u00e1 tr\u00ecnh n\u00e0y, SOA \u0111\u01b0\u1ee3c coi nh\u01b0 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft c\u1ee7a h\u1ec7 th\u1ed1ng v\u1ec1 t\u00ean mi\u1ec1n n\u00e0y.<\/p>\n\n\n\n

Trong m\u1ed7i t\u1eadp tin c\u01a1 s\u1edf d\u1eef li\u1ec7u DNS ph\u1ea3i c\u00f3 m\u1ed9t v\u00e0 ch\u1ec9 m\u1ed9t SOA record g\u1ed3m c\u00e1c th\u00f4ng tin v\u1ec1 domain tr\u00ean DNS Server, th\u00f4ng tin v\u1ec1 zone transfer.<\/p>\n\n\n\n

B\u1ea3n ghi SOA ch\u1ee9a th\u00f4ng tin quan tr\u1ecdng v\u1ec1 t\u00ean mi\u1ec1n v\u00e0 qu\u1ea3n l\u00fd cho t\u00ean mi\u1ec1n \u0111\u00f3, bao g\u1ed3m:<\/p>\n\n\n\n

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