{"id":12378550,"date":"2026-03-19T23:37:22","date_gmt":"2026-03-19T15:37:22","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e5%9f%9f%e5%90%8d%e5%ae%8c%e5%85%a8%e6%8c%87%e5%8d%97%ef%bc%9a%e4%bb%8e%e6%b3%a8%e5%86%8c%e5%88%b0%e7%ae%a1%e7%90%86%ef%bc%8c%e8%a7%a3%e6%9e%90%e4%b8%8e%e5%ae%89%e5%85%a8%e7%9a%84%e5%bf%85%e5%a4%87\/"},"modified":"2026-03-20T00:13:16","modified_gmt":"2026-03-19T16:13:16","slug":"complete-guide-to-domain-names-registration-management-dns-security","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/domain\/complete-guide-to-domain-names-registration-management-dns-security\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 t\u00ean mi\u1ec1n: Ki\u1ebfn th\u1ee9c c\u1ea7n thi\u1ebft t\u1eeb \u0111\u0103ng k\u00fd, qu\u1ea3n l\u00fd, ph\u00e2n gi\u1ea3i \u0111\u1ebfn b\u1ea3o m\u1eadt"},"content":{"rendered":"

Trong th\u1ebf gi\u1edbi k\u1ef9 thu\u1eadt s\u1ed1, t\u00ean mi\u1ec1n (domain name) l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ea1i di\u1ec7n cho danh t\u00ednh tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 \u0111\u1ecba ch\u1ec9 m\u00e0 ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng \u0111\u1ec3 truy c\u1eadp trang web c\u1ee7a b\u1ea1n, m\u00e0 c\u00f2n l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng tr\u1ef1c ti\u1ebfp cho th\u01b0\u01a1ng hi\u1ec7u, s\u1ef1 chuy\u00ean nghi\u1ec7p v\u00e0 uy t\u00edn c\u1ee7a b\u1ea1n. M\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 qu\u1ea3n l\u00fd c\u1ea9n th\u1eadn ch\u00ednh l\u00e0 n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a b\u1ea5t k\u1ef3 d\u1ef1 \u00e1n tr\u1ef1c tuy\u1ebfn n\u00e0o. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd h\u1ec7 th\u1ed1ng h\u00f3a qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00ean mi\u1ec1n, t\u1eeb giai \u0111o\u1ea1n \u0111\u0103ng k\u00fd, qu\u1ea3n l\u00fd, gi\u1ea3i quy\u1ebft (resolution) \u0111\u1ebfn b\u1ea3o m\u1eadt, bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh quan tr\u1ecdng li\u00ean qu<\/p>\n\n\n\n

\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n: B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean tr\u00ean con \u0111\u01b0\u1eddng tr\u1ef1c tuy\u1ebfn<\/h2>\n\n\n\n

\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng m\u1ed9t trang web. Qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng th\u1ef1c ch\u1ea5t bao g\u1ed3m nhi\u1ec1u quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u00e2u d\u00e0i \u0111\u1ebfn doanh nghi\u1ec7p tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n

Vi\u1ec7c ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n t\u1ed1t l\u00e0 r\u1ea5t quan tr\u1ecdng. M\u1ed9t t\u00ean mi\u1ec1n l\u00fd t\u01b0\u1edfng n\u00ean ng\u1eafn g\u1ecdn, d\u1ec5 nh\u1edb, d\u1ec5 \u0111\u00e1nh v\u1ea7n, v\u00e0 t\u1ed1t nh\u1ea5t l\u00e0 ph\u1ea3n \u00e1nh \u0111\u01b0\u1ee3c th\u01b0\u01a1ng hi\u1ec7u ho\u1eb7c ng\u00e0nh ngh\u1ec1 c\u1ee7a b\u1ea1n. H\u00e3y tr\u00e1nh s\u1eed d\u1ee5ng d\u1ea5u g\u1ea1ch n\u1ed1i, ch\u1eef s\u1ed1 ho\u1eb7c nh\u1eefng c\u00e1ch \u0111\u00e1nh v\u1ea7n d\u1ec5 g\u00e2y nh\u1ea7m l\u1eabn. \u01afu ti\u00ean l\u1ef1a ch\u1ecdn nh\u1eefng t\u00ean mi .com<\/code> Top-level domains (TLDs) l\u00e0 nh\u1eefng t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t; ti\u1ebfp theo l\u00e0\u2026 .net<\/code>\u3001.org<\/code> Ho\u1eb7c c\u00e1c t\u00ean mi\u1ec1n qu\u1ed1c gia li\u00ean quan \u0111\u1ebfn qu\u1ed1c gia\/khu v\u1ef1c m\u00e0 b\u1ea1n \u0111ang sinh s\u1ed1ng. \u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u1ee5 th\u1ec3,.io<\/code>(C\u00f4ng ngh\u1ec7),.app<\/code>C\u00e1c t\u00ean mi\u1ec1n c\u1ea5p cao ph\u1ed5 th\u00f4ng m\u1edbi nh\u01b0 (Application) c\u0169ng l\u00e0 nh\u1eefng l\u1ef1a ch\u1ecdn t\u1ed1t.<\/p>\n\n\n\n

L\u1ef1a ch\u1ecdn nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

Nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n l\u00e0 c\u00f4ng ty cung c\u1ea5p d\u1ecbch v\u1ee5 mua v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n cho b\u1ea1n. Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1ed9t nh\u00e0 \u0111\u0103ng k\u00fd c\u00f3 uy t\u00edn, m\u1ee9c gi\u00e1 minh b\u1ea1ch, giao di\u1ec7n qu\u1ea3n l\u00fd th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng ch\u1ea5t l\u01b0\u1ee3ng cao l\u00e0 r\u1ea5t quan tr\u1ecdng. C\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd n\u1ed5i ti\u1ebfng tr\u00ean th\u1ebf gi\u1edbi nh\u01b0 GoDaddy, Namecheap, c\u0169ng nh\u01b0 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 t\u1ea1i Vi\u1ec7t Nam nh\u01b0 Alibaba Cloud, Tencent Cloud \u0111\u1ec1u l\u00e0 nh\u1eefng l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn. Khi \u0111\u0103ng k\u00fd, h\u00e3y \u0111\u1ecdc k\u1ef9 c\u00e1c \u0111i\u1ec1u kho\u1ea3n d\u1ecbch v\u1ee5, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c ch\u00ednh s\u00e1ch li\u00ean quan \u0111\u1ebfn vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng v\u00e0 gia h\u1ea1n t\u00ean mi\u1ec1n.<\/p>\n\n\n\n

Quy tr\u00ecnh \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0<\/h3>\n\n\n\n

Quy tr\u00ecnh \u0111\u0103ng k\u00fd th\u01b0\u1eddng bao g\u1ed3m c\u00e1c b\u01b0\u1edbc sau: ki\u1ec3m tra t\u00ednh s\u1eb5n c\u00f3 c\u1ee7a t\u00ean mi\u1ec1n, th\u00eam s\u1ea3n ph\u1ea9m v\u00e0o gi\u1ecf h\u00e0ng, t\u1ea1o t\u00e0i kho\u1ea3n, \u0111i\u1ec1n th\u00f4ng tin ng\u01b0\u1eddi \u0111\u0103ng k\u00fd, v\u00e0 ho\u00e0n t\u1ea5t thanh to\u00e1n. \u0110i\u1ec1u \u0111\u1eb7c bi\u1ec7t c\u1ea7n l\u01b0u \u00fd \u1edf \u0111\u00e2y l\u00e0 th\u00f4ng tin trong c\u01a1 s\u1edf d\u1eef li\u1ec7u WHOIS. Theo quy \u0111\u1ecbnh, t\u00ean, \u0111\u1ecba ch\u1ec9, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i v\u00e0 email c\u1ee7a ng\u01b0\u1eddi \u0111\u0103ng k\u00fd s\u1ebd \u0111\u01b0\u1ee3c c\u00f4ng khai trong c\u01a1 s\u1edf d\u1eef li\u1ec7u WHOIS, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c r\u00f2 r\u1ec9 th\u00f4ng tin c\u00e1 nh\u00e2n v\u00e0 b\u1ecb qu\u1ea5y r\u1ed1i b\u1eb1ng th\u01b0 r\u00e1c.<\/p>\n\n\n

\n\n
\n \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n hosting.com<\/strong>\n
Th\u00f4ng qua g\u00f3i l\u01b0u tr\u1eef chia s\u1ebb h\u00e0ng n\u0103m, nh\u1eadn t\u00ean mi\u1ec1n .com mi\u1ec5n ph\u00ed trong m\u1ed9t n\u0103m, h\u1ed7 tr\u1ee3 300+ h\u1eadu t\u1ed1 t\u00ean mi\u1ec1n, qu\u1ea3n l\u00fd DNS mi\u1ec5n ph\u00ed, h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng 24\/7<\/div>\n <\/div>\n\n
\n \n \n \"\u0110\u0103ng\n \n \n <\/a>\n \n \n Truy c\u1eadp hosting.com <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

Do \u0111\u00f3, ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean b\u1eadt d\u1ecbch v\u1ee5 \u201cB\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 WHOIS\u201d khi \u0111\u0103ng k\u00fd (m\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd cung c\u1ea5p d\u1ecbch v\u1ee5 n\u00e0y mi\u1ec5n ph\u00ed). D\u1ecbch v\u1ee5 n\u00e0y s\u1ebd thay th\u1ebf th\u00f4ng tin c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n b\u1eb1ng th\u00f4ng tin \u0111\u1ea1i di\u1ec7n c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd, nh\u1eb1m b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

Qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n: B\u1ea3o tr\u00ec hi\u1ec7u qu\u1ea3 t\u00e0i s\u1ea3n c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n

Sau khi \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u00e0nh c\u00f4ng, vi\u1ec7c qu\u1ea3n l\u00fd ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n c\u00f3 v\u00e0 an to\u00e0n l\u00e2u d\u00e0i c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3. Qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n bao g\u1ed3m c\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh nh\u01b0 b\u1ea3o tr\u00ec h\u00e0ng ng\u00e0y, c\u1eadp nh\u1eadt th\u00f4ng tin, v\u00e0 x\u00e2y d\u1ef1ng chi\u1ebfn l\u01b0\u1ee3c gia h\u1ea1n.<\/p>\n\n\n\n

C\u00e1ch s\u1eed d\u1ee5ng B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n Qu\u1ea3n l\u00fd T\u00ean mi\u1ec1n<\/h3>\n\n\n\n

Nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n s\u1ebd cung c\u1ea5p cho b\u1ea1n m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n tr\u1ef1c tuy\u1ebfn (ch\u1eb3ng h\u1ea1n nh\u01b0 cPanel ho\u1eb7c giao di\u1ec7n qu\u1ea3n tr\u1ecb ri\u00eang bi\u1ec7t). \u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 ch\u00ednh \u0111\u1ec3 b\u1ea1n qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh. T\u1ea1i \u0111\u00e2y, b\u1ea1n c\u00f3 th\u1ec3: c\u1eadp nh\u1eadt th\u00f4ng tin li\u00ean h\u1ec7, qu\u1ea3n l\u00fd c\u00e0i \u0111\u1eb7t m\u00e1y ch\u1ee7 DNS, thi\u1ebft l\u1eadp chuy\u1ec3n h\u01b0\u1edbng t\u00ean mi\u1ec1n, l\u1ea5y m\u00e3 x\u00e1c th\u1ef1c (d\u00f9ng \u0111\u1ec3 chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n), v\u00e0 qu\u1ea3n l\u00fd c\u00e1c t\u00ean mi\u1ec1n con. Vi\u1ec7c l\u00e0m quen v\u1edbi c\u00e1c t\u00ednh n\u0103ng c\u1ee7a b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n l\u00e0 k\u1ef9 n\u0103ng c\u01a1 b\u1ea3n m\u00e0 m\u1ecdi ng\u01b0\u1eddi qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n \u0111\u1ec1u c\u1ea7n ph\u1ea3i n\u1eafm v\u1eefng.<\/p>\n\n\n\n

Ch\u00ednh s\u00e1ch gia h\u1ea1n v\u00e0 h\u1ebft h\u1ea1n t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

T\u00ean mi\u1ec1n kh\u00f4ng \u0111\u01b0\u1ee3c mua v\u0129nh vi\u1ec5n, m\u00e0 \u0111\u01b0\u1ee3c thu\u00ea theo n\u0103m. Vi\u1ec7c qu\u00ean kh\u00f4ng gia h\u1ea1n l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t d\u1eabn \u0111\u1ebfn vi\u1ec7c m\u1ea5t t\u00ean mi\u1ec1n. H\u00e3y ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c email nh\u1eafc nh\u1edf v\u1ec1 vi\u1ec7c gia h\u1ea1n t\u1eeb nh\u00e0 \u0111\u0103ng k\u00fd v\u00e0 thi\u1ebft l\u1eadp ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n \u0111\u1ec3 tr\u00e1nh nh\u1eefng s\u1ef1 c\u1ed1 kh\u00f4ng mong mu\u1ed1n. Vi\u1ec7c hi\u1ec3u r\u00f5 ch\u00ednh s\u00e1ch \u201cth\u1eddi gian \u00e2n h\u1ea1n\u201d v\u00e0 \u201cth\u1eddi gian ho\u00e0n l\u1ea1i\u201d c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd l\u00e0 r\u1ea5t quan tr\u1ecdng. Sau khi t\u00ean mi\u1ec1n h\u1ebft h\u1ea1n, th\u01b0\u1eddng s\u1ebd c\u00f3 m\u1ed9t kho\u1ea3ng th\u1eddi gian \u00e2n h\u1ea1n kho\u1ea3ng 30 ng\u00e0y, trong \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 gia h\u1ea1n v\u1edbi gi\u00e1 ban \u0111\u1ea7u; sau \u0111\u00f3 s\u1ebd b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n ho\u00e0n l\u1ea1i v\u1edbi gi\u00e1 cao h\u01a1n; cu\u1ed1i c\u00f9ng t\u00ean mi\u1ec1n s\u1ebd b\u1ecb x\u00f3a v\u00e0 m\u1edf l\u1ea1i cho vi\u1ec7c \u0111\u0103ng k\u00fd m\u1edbi.<\/p>\n\n\n\n

Quy\u1ec1n s\u1edf h\u1eefu v\u00e0 chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n s\u1edf h\u1eefu to\u00e0n b\u1ed9 quy\u1ec1n s\u1edf h\u1eefu \u0111\u1ed1i v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 th\u00f4ng tin \u201cNg\u01b0\u1eddi \u0111\u0103ng k\u00fd\u201d \u0111\u01b0\u1ee3c \u0111i\u1ec1n v\u00e0o l\u00fac \u0111\u0103ng k\u00fd ph\u1ea3i l\u00e0 b\u1ea1n ho\u1eb7c c\u00f4ng ty c\u1ee7a b\u1ea1n, v\u00e0 b\u1ea1n c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o email \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u00f3. Khi c\u1ea7n chuy\u1ec3n t\u00ean mi\u1ec1n t\u1eeb nh\u00e0 \u0111\u0103ng k\u00fd n\u00e0y sang nh\u00e0 \u0111\u0103ng k\u00fd kh\u00e1c, b\u1ea1n c\u1ea7n l\u1ea5y \u201cM\u00e3 x\u00e1c th\u1ef1c\u201d (Authorization Code), sau \u0111\u00f3 th\u1ef1c hi\u1ec7n quy tr\u00ecnh chuy\u1ec3n nh\u01b0\u1ee3ng t\u1ea1i nh\u00e0 \u0111\u0103ng k\u00fd m\u1edbi. \u0110\u1ed3ng th\u1eddi, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00ean mi\u1ec1n kh\u00f4ng \u0111ang trong tr\u1ea1ng th\u00e1i b\u1ecb kh\u00f3a v\u00e0 \u0111\u00e3 v\u01b0\u1ee3t qua th\u1eddi h\u1ea1n h\u1ea1n ch\u1ebf chuy\u1ec3n nh\u01b0\u1ee3ng (60 ng\u00e0y).<\/p>\n\n\n\n

DNS (Domain Name System) gi\u1ea3i quy\u1ebft: Chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP c\u1ee7a trang web t\u01b0\u01a1ng \u1ee9ng.<\/h2>\n\n\n\n

T\u00ean mi\u1ec1n ch\u1ec9 l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9, c\u1ea7n \u0111\u01b0\u1ee3c ph\u00e2n gi\u1ea3i th\u00f4ng qua DNS (H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n) \u0111\u1ec3 tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef n\u1ed9i dung trang web c\u1ee7a b\u1ea1n. Hi\u1ec3u v\u1ec1 DNS l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 trang web c\u00f3 th\u1ec3 truy c\u1eadp b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n

Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS<\/h3>\n\n\n\n

DNS (Domain Name System) l\u00e0 h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n, cung c\u1ea5p c\u00e1ch th\u1ee9c chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00ean mi\u1ec1n (v\u00ed d\u1ee5: www.example.com) th\u00e0nh \u0111\u1ecba ch\u1ec9 IP (v\u00ed d\u1ee5: 192.168.1.1) m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. C\u00e1c b\u1ea3n ghi DNS (DNS records) l\u00e0 nh\u1eefng th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 DNS, d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a c\u00e1ch
\n\u2013 Lo\u1ea1i A (Type A record): D\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n (domain name) \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i IPv4. \u0110\u00e2y l\u00e0 lo\u1ea1i record c\u01a1 b\u1ea3n nh\u1ea5t; v\u00ed d\u1ee5: khi b\u1ea1n mu\u1ed1n m\u1ed9t trang web \u0111\u01b0\u1ee3c truy c\u1eadp th\u00f4ng qua t\u00ean mi\u1ec1n \u0111\u00f3 th\u00ec b\u1ea1n c\u1ea7n thi\u1ebft l\u1eadp record lo\u1ea1i A \u0111\u1ec3 ch\u1ec9 \u0111\u01b0\u1eddng truy c\u1eadp \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng. www.example.com<\/code> \u0111\u1ebfn 192.0.2.1<\/code>\u3002
\n\u2013 B\u1ea3n ghi AAAA: \u0110\u1ecbnh tuy\u1ebfn t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv6.
\n\u2013 CNAME record (alias record): D\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, thay v\u00ec \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP. V\u00ed d\u1ee5: blog.example.com<\/code> \u0111\u1ebfn myblog.hosting.com<\/code>\u3002
\n\u2013 MX (Mail Exchange) record: X\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 c\u1ee7a m\u00e1y ch\u1ee7 email ch\u1ecbu tr\u00e1ch nhi\u1ec7m nh\u1eadn th\u01b0 cho t\u00ean mi\u1ec1n \u0111\u00f3.
\n\u2013 B\u1ea3n ghi TXT: Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n (ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00f4ng c\u1ee5 qu\u1ea3n tr\u1ecb trang web c\u1ee7a Google) ho\u1eb7c thi\u1ebft l\u1eadp c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt email (nh\u01b0 SPF, DKIM).
\nB\u1ea3n ghi NS: Ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 DNS n\u00e0o s\u1ebd th\u1ef1c hi\u1ec7n ph\u00e2n gi\u1ea3i cho t\u00ean mi\u1ec1n n\u00e0y.<\/p>\n\n\n\n

Quy tr\u00ecnh gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (Domain Name Resolution)<\/h3>\n\n\n\n

Khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp t\u00ean mi\u1ec1n v\u00e0o tr\u00ecnh duy\u1ec7t, qu\u00e1 tr\u00ecnh gi\u1ea3i quy\u1ebft nh\u01b0 sau: \n\u2013 B\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u01b0\u1edbc. \n\u2013 Ti\u1ebfp theo l\u00e0 b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh. \n\u2013 Sau \u0111\u00f3 l\u00e0 b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee5c b\u1ed9 (local router). \n\u2013 Ti\u1ebfp theo l\u00e0 m\u00e1y ch\u1ee7 DNS c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP). \n\u2013 M\u00e1y ch\u1ee7 DNS th\u1ef1c hi\u1ec7n c\u00e1c truy v\u1ea5n tu\u1ea7n t\u1ef1 \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n g\u1ed1c (root domain servers) v\u00e0 c\u00e1c m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n c\u1ea5p cao (top-level domain servers), \u0111\u1ec3 cu\u1ed1i c\u00f9ng thu \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3. \n\nQu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng di\u1ec5n ra trong v\u00e0i miligi\u00e2y, nh\u01b0ng n\u00f3 c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111<\/p>\n\n\n

\n\n
\n \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n UltaHost<\/strong>\n
H\u01a1n 300 \u0111u\u00f4i t\u00ean mi\u1ec1n, ch\u1ecdn g\u00f3i l\u01b0u tr\u1eef h\u00e0ng n\u0103m, t\u1eadn h\u01b0\u1edfng t\u00ean mi\u1ec1n mi\u1ec5n ph\u00ed! Chuy\u1ec3n t\u00ean mi\u1ec1n sang Ultahost \u0111\u1ec3 \u0111\u01b0\u1ee3c gia h\u1ea1n mi\u1ec5n ph\u00ed m\u1ed9t n\u0103m, .com $9.49 n\u0103m \u0111\u1ea7u ti\u00ean<\/div>\n <\/div>\n\n
\n \n \n \"\u0110\u0103ng\n \n \n <\/a>\n \n \n Truy c\u1eadp UltaHost <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 DNS c\u1ee7a b\u00ean th\u1ee9 ba<\/h3>\n\n\n\n

Ngo\u00e0i DNS m\u1eb7c \u0111\u1ecbnh do nh\u00e0 \u0111\u0103ng k\u00fd cung c\u1ea5p, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DNS b\u00ean th\u1ee9 ba chuy\u00ean nghi\u1ec7p h\u01a1n, nhanh h\u01a1n v\u00e0 c\u00f3 nhi\u1ec1u t\u00ednh n\u0103ng h\u01a1n nh\u01b0 Cloudflare, Amazon Route 53, Google Cloud DNS, v.v. Nh\u1eefng d\u1ecbch v\u1ee5 n\u00e0y th\u01b0\u1eddng mang l\u1ea1i t\u1ed1c \u0111\u1ed9 gi\u1ea3i quy\u1ebft y\u00eau c\u1ea7u truy c\u1eadp tr\u00ean to\u00e0n c\u1ea7u nhanh h\u01a1n, kh\u1ea3 n\u0103ng ch\u1ed1ng t\u1ea5n c\u00f4ng m\u1ea1ng (b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS) m\u1ea1nh m\u1ebd h\u01a1n, c\u00f9ng v\u1edbi nhi\u1ec1u c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng v\u00e0 t\u00ednh n\u0103ng b\u1ea3o m\u1eadt \u0111a d\u1ea1ng h\u01a1n.<\/p>\n\n\n\n

B\u1ea3o m\u1eadt t\u00ean mi\u1ec1n: B\u1ea3o v\u1ec7 c\u1ed5ng th\u00f4ng tin k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n

L\u00e0 m\u1ed9t t\u00e0i s\u1ea3n quan tr\u1ecdng, t\u00ean mi\u1ec1n \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau c\u1ee7a c\u00e1c hacker v\u00e0 nh\u00e0 \u0111\u1ea7u c\u01a1. An ninh t\u00ean mi\u1ec1n kh\u00f4ng th\u1ec3 b\u1ecb xem th\u01b0\u1eddng; n\u1ebfu b\u1ecb m\u1ea5t ho\u1eb7c b\u1ecb chi\u1ebfm \u0111o\u1ea1t, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c trang web b\u1ecb t\u1eaft ho\u1ea1t \u0111\u1ed9ng, danh ti\u1ebfng th\u01b0\u01a1ng hi\u1ec7u b\u1ecb t\u1ed5n h\u1ea1i, th\u1eadm ch\u00ed l\u00e0 d\u1eef li\u1ec7u b\u1ecb r\u00f2 r\u1ec9.<\/p>\n\n\n\n

K\u00edch ho\u1ea1t ch\u1ee9c n\u0103ng kh\u00f3a t\u00ean mi\u1ec1n c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u1ec1u cung c\u1ea5p t\u00ednh n\u0103ng \u201ckh\u00f3a t\u00ean mi\u1ec1n\u201d (\u0111\u00f4i khi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u00f3a c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd ho\u1eb7c kh\u00f3a \u1edf ph\u00eda m\u00e1y kh\u00e1ch). Khi t\u00ednh n\u0103ng n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, n\u00f3 s\u1ebd ng\u0103n ch\u1eb7n vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch tr\u00e1i ph\u00e9p sang nh\u00e0 \u0111\u0103ng k\u00fd kh\u00e1c. Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 thao t\u00e1c chuy\u1ec3n nh\u01b0\u1ee3ng n\u00e0o, b\u1ea1n c\u1ea7n ph\u1ea3i g\u1ee1 kh\u00f3a t\u00ean mi\u1ec1n b\u1eb1ng tay th\u00f4ng qua b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n. \u0110\u00e2y l\u00e0 bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n v\u00e0 quan tr\u1ecdng nh\u1ea5t.<\/p>\n\n\n\n

Thi\u1ebft l\u1eadp b\u1ea3o m\u1eadt t\u00e0i kho\u1ea3n m\u1ea1nh m\u1ebd<\/h3>\n\n\n\n

H\u00e3y b\u1ea3o v\u1ec7 t\u00e0i kho\u1ea3n nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n. H\u00e3y s\u1eed d\u1ee5ng m\u1ed9t m\u1eadt kh\u1ea9u m\u1ea1nh v\u00e0 duy nh\u1ea5t, v\u00e0 b\u1eadt t\u00ednh n\u0103ng x\u00e1c th\u1ef1c hai y\u1ebfu t\u1ed1 (2FA). \u0110\u1eebng s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t m\u1eadt kh\u1ea9u cho nhi\u1ec1u trang web kh\u00e1c nhau. \u0110\u1ea3m b\u1ea3o an to\u00e0n cho \u0111\u1ecba ch\u1ec9 email \u0111\u0103ng k\u00fd (\u0111\u1eb7c bi\u1ec7t l\u00e0 email WHOIS), v\u00ec th\u00f4ng tin x\u00e1c nh\u1eadn vi\u1ec7c \u0111\u1eb7t m\u1eadt kh\u1ea9u m\u1edbi v\u00e0 c\u00e1c li\u00ean k\u1ebft li\u00ean quan \u0111\u1ebfn vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 email n\u00e0y.<\/p>\n\n\n\n

Ph\u00f2ng ng\u1eeba c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o tr\u1ef1c tuy\u1ebfn v\u00e0 k\u1ef9 thu\u1eadt x\u00e3 h\u1ed9i (social engineering)<\/h3>\n\n\n\n

H\u00e3y c\u1ea3nh gi\u00e1c v\u1edbi c\u00e1c email ho\u1eb7c cu\u1ed9c g\u1ecdi l\u1eeba \u0111\u1ea3o nh\u1eafm \u0111\u1ebfn ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n. K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 gi\u1ea3 danh l\u00e0 nh\u00e2n vi\u00ean h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u1ec3 l\u1eeba b\u1ea1n cung c\u1ea5p th\u00f4ng tin \u0111\u0103ng nh\u1eadp ho\u1eb7c m\u00e3 x\u00e1c th\u1ef1c. H\u00e3y nh\u1edb r\u1eb1ng, nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n h\u1ee3p ph\u00e1p s\u1ebd kh\u00f4ng bao gi\u1edd y\u00eau c\u1ea7u b\u1ea1n cung c\u1ea5p m\u1eadt kh\u1ea9u qua \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c email. M\u1ecdi thao t\u00e1c n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau khi b\u1ea1n \u0111\u0103ng nh\u1eadp v\u00e0o t\u00e0i kho\u1ea3n th\u00f4ng qua c\u00e1c k\u00eanh ch\u00ednh th\u1ee9c.<\/p>\n\n\n\n

Gi\u1edbi thi\u1ec7u v\u1ec1 c\u00f4ng ngh\u1ec7 DNSSEC<\/h3>\n\n\n\n

DNSSEC (Domain Name System Security Extensions) l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c giao th\u1ee9c m\u1edf r\u1ed9ng nh\u1eb1m cung c\u1ea5p t\u00ednh b\u1ea3o m\u1eadt cho c\u00e1c truy v\u1ea5n DNS. C\u00e1c giao th\u1ee9c n\u00e0y s\u1eed d\u1ee5ng ch\u1eef k\u00fd s\u1ed1 \u0111\u1ec3 x\u00e1c th\u1ef1c t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c ph\u1ea3n h\u1ed3i DNS, ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng l\u00e0m sai l\u1ec7ch d\u1eef li\u1ec7u trong b\u1ed9 \u0111\u1ec7m DNS (DNS caching) v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ng\u01b0\u1eddi trung gian (man-in-the-middle attacks), \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u1ecba ch\u1ec9 trang web m\u00e0 ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp l\u00e0 ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. Ng\u00e0y c\u00e0ng nhi\u1ec1u nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n (domain registrars) v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS h\u1ed7 tr\u1ee3 DNSSEC; do \u0111\u00f3, vi\u1ec7c k\u00edch ho\u1ea1t t\u00ednh n\u0103ng n\u00e0y cho c\u00e1c t\u00ean mi\u1ec1n quan tr\u1ecdng l\u00e0 r\u1ea5t \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb.<\/p>\n\n

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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0110\u0103ng\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\t\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n Bluehost<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tH\u1ed7 tr\u1ee3 tr\u00ecnh t\u1ea1o t\u00ean mi\u1ec1n AI, d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 24\/7<\/span>\r\n\t\t\t\t
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T\u1ea1o t\u00ean mi\u1ec1n b\u1eb1ng AI<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp Bluehost \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n\t\r\n\t
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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"WordPress.com\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\tWordPress.com \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tCh\u1ecdn g\u00f3i cao c\u1ea5p nh\u1ea5t \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m gi\u00e1 l\u00ean \u0111\u1ebfn 69% + mi\u1ec5n ph\u00ed chuy\u1ec3n t\u00ean mi\u1ec1n, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd t\u1eeb .com, .blog v\u00e0 h\u01a1n 350 \u0111u\u00f4i t\u00ean mi\u1ec1n kh\u00e1c.<\/span>\r\n\t\t\t\t
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Mua g\u00f3i thanh to\u00e1n h\u00e0ng n\u0103m, t\u00ean mi\u1ec1n mi\u1ec5n ph\u00ed n\u0103m \u0111\u1ea7u ti\u00ean<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n WordPress.com \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n<\/div>\r\n\r\n\r\n\n\n\n\n\n\n\n

T\u00f3m l\u1ea1i<\/h2>\n\n\n\n

T\u00ean mi\u1ec1n l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n cho s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a b\u1ea1n tr\u00ean m\u1ea1ng; gi\u00e1 tr\u1ecb c\u1ee7a n\u00f3 v\u01b0\u1ee3t xa chi ph\u00ed \u0111\u0103ng k\u00fd h\u00e0ng n\u0103m. T\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn k\u1ef9 l\u01b0\u1ee1ng v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 ngay t\u1eeb khi \u0111\u0103ng k\u00fd, \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd th\u01b0\u1eddng xuy\u00ean v\u00e0 t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt, cho \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng DNS \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a tr\u1ea3i nghi\u1ec7m truy c\u1eadp, m\u1ecdi kh\u00e2u \u0111\u1ec1u c\u1ea7n \u0111\u01b0\u1ee3c ch\u00fa tr\u1ecdng. B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng nh\u1eefng ki\u1ebfn th\u1ee9c c\u1ed1t l\u00f5i v\u1ec1 \u0111\u0103ng k\u00fd, qu\u1ea3n l\u00fd, gi\u1ea3i quy\u1ebft v\u00e0 b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n cho t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh m\u00e0 c\u00f2n t\u1ea1o n\u00ean m\u1ed9t n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho trang web, email v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n. H\u00e3y coi t\u00ean mi\u1ec1n nh\u01b0 m\u1ed9t t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 quan tr\u1ecdng v\u00e0 d\u00e0nh cho n\u00f3 s\u1ef1 quan t\u00e2m, ch\u0103m s\u00f3c \u0111\u00fang m\u1ee9c.<\/p>\n\n\n\n

FAQ \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n

Sau khi \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, c\u00f3 th\u1ec3 ho\u00e0n ti\u1ec1n kh\u00f4ng?<\/h3>\n\n\n\n

H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n cho ph\u00e9p b\u1ea1n h\u1ee7y \u0111\u0103ng k\u00fd v\u00e0 \u0111\u01b0\u1ee3c ho\u00e0n ti\u1ec1n trong m\u1ed9t kho\u1ea3ng th\u1eddi gian r\u1ea5t ng\u1eafn sau khi \u0111\u0103ng k\u00fd (v\u00ed d\u1ee5: 1\u20135 ng\u00e0y), nh\u01b0ng \u0111i\u1ec1u n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 quy \u0111\u1ecbnh b\u1eaft bu\u1ed9c v\u00e0 ch\u00ednh s\u00e1ch c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo nh\u00e0 \u0111\u0103ng k\u00fd. M\u1ed9t khi b\u1ea1n v\u01b0\u1ee3t qu\u00e1 th\u1eddi h\u1ea1n n\u00e0y, vi\u1ec7c ho\u00e0n ti\u1ec1n th\u01b0\u1eddng s\u1ebd kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c v\u00ec t\u00ean mi\u1ec1n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u01b0\u1edbc cho b\u1ea1n v\u00e0 mang t\u00ednh \u0111\u1ed9c nh\u1ea5t. Do \u0111\u00f3, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n \u0111\u00e3 ki\u1ec3m tra ch\u00ednh x\u00e1c t\u00ean mi\u1ec1n m\u00e0 m\u00ecnh mu\u1ed1n \u0111\u0103ng k\u00fd tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n thao t<\/p>\n\n\n\n

T\u00f4i c\u00f3 th\u1ec3 mua m\u1ed9t t\u00ean mi\u1ec1n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd kh\u00f4ng?<\/h3>\n\n\n\n

\u0110\u01b0\u1ee3c. N\u1ebfu t\u00ean mi\u1ec1n b\u1ea1n mong mu\u1ed1n \u0111\u00e3 b\u1ecb ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd, b\u1ea1n c\u00f3 th\u1ec3 th\u1eed li\u00ean h\u1ec7 v\u1edbi ch\u1ee7 s\u1edf h\u1eefu hi\u1ec7n t\u1ea1i th\u00f4ng qua d\u1ecbch v\u1ee5 m\u00f4i gi\u1edbi t\u00ean mi\u1ec1n \u0111\u1ec3 \u0111\u00e0m ph\u00e1n mua b\u00e1n, ho\u1eb7c ch\u1edd \u0111\u1ee3i \u0111\u1ebfn khi t\u00ean mi\u1ec1n \u0111\u00f3 \u0111\u01b0\u1ee3c h\u1ee7y b\u1ecf v\u00e0 m\u1edf c\u1eeda \u0111\u0103ng k\u00fd tr\u1edf l\u1ea1i \u0111\u1ec3 \u0111\u0103ng k\u00fd l\u1ea1i. Ngo\u00e0i ra, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u00ecm ki\u1ebfm v\u00e0 mua c\u00e1c t\u00ean mi\u1ec1n \u0111ang \u0111\u01b0\u1ee3c b\u00e1n tr\u00ean c\u00e1c s\u00e0n giao d\u1ecbch t\u00ean mi\u1ec1n chuy\u00ean nghi\u1ec7p nh\u01b0 Sedo ho\u1eb7c Alibaba Cloud Wanwang.<\/p>\n\n\n\n

T\u00ean mi\u1ec1n (domain name) v\u00e0 m\u00e1y ch\u1ee7 (host, ho\u1eb7c m\u00e1y ch\u1ee7 \u1ea3o \u2013 virtual host) c\u00f3 ph\u1ea3i l\u00e0 c\u00f9ng m\u1ed9t th\u1ee9 kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng ph\u1ea3i v\u1eady. T\u00ean mi\u1ec1n (domain name) l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a trang web c\u1ee7a b\u1ea1n (v\u00ed d\u1ee5: example.com), trong khi m\u00e1y ch\u1ee7 (hay c\u00f2n g\u1ecdi l\u00e0 kh\u00f4ng gian l\u01b0u tr\u1eef tr\u00ean m\u00e1y ch\u1ee7 \u2013 server space) l\u00e0 thi\u1ebft b\u1ecb v\u1eadt l\u00fd d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c t\u1ec7p tin, c\u01a1 s\u1edf d\u1eef li\u1ec7u, v.v. c\u1ee7a trang web \u0111\u00f3. B\u1ea1n c\u1ea7n thi\u1ebft l\u1eadp ph\u00e9p gi\u1ea3i m\u00e3 (DNS resolution) \u0111\u1ec3 \u0111\u1ecbnh t\u00ean mi\u1ec1n \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7, nh\u1edd \u0111\u00f3 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp n\u1ed9i dung trang web th\u00f4ng qua t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n\n\n\n

T\u1ea1i sao sau khi thay \u0111\u1ed5i th\u00f4ng tin DNS, vi\u1ec7c truy c\u1eadp v\u00e0o trang web v\u1eabn c\u00f2n hi\u1ec3n th\u1ecb n\u1ed9i dung c\u0169?<\/h3>\n\n\n\n

Vi\u1ec7c thay \u0111\u1ed5i th\u00f4ng tin DNS ph\u1ea3i m\u1ea5t th\u1eddi gian \u0111\u1ec3 c\u00f3 hi\u1ec7u l\u1ef1c tr\u00ean to\u00e0n c\u1ea7u; qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cDNS propagation\u201d (s\u1ef1 lan truy\u1ec1n th\u00f4ng tin DNS). Do c\u00e1c m\u00e1y ch\u1ee7 DNS c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi \u0111ang l\u01b0u tr\u1eef nh\u1eefng th\u00f4ng tin c\u0169 trong b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a h\u1ecd, vi\u1ec7c l\u00e0m m\u1edbi nh\u1eefng th\u00f4ng tin n\u00e0y c\u0169ng m\u1ea5t th\u1eddi gian, th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn 48 gi\u1edd. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn v\u1ec1 qu\u00e1 tr\u00ecnh DNS propagation \u0111\u1ec3 theo d\u00f5i t\u00ecnh h\u00ecnh c\u1eadp nh\u1eadt tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>\n\n\n\n

Ch\u1ee9ng ch\u1ec9 b\u1ea3o m\u1eadt (SSL) c\u1ee7a trang web HTTPS c\u00f3 li\u00ean quan \u0111\u1ebfn b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n kh\u00f4ng?<\/h3>\n\n\n\n

C\u00f3 m\u1ed1i li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp. Ch\u1ee9ng ch\u1ec9 SSL \u0111\u01b0\u1ee3c c\u1ea5p d\u1ef1a tr\u00ean t\u00ean mi\u1ec1n, v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp trang web (t\u1ee9c l\u00e0 l\u00e0m cho \u0111\u1ecba ch\u1ec9 trang web hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng HTTPS). M\u1ed9t trong nh\u1eefng c\u00e1ch \u0111\u1ec3 x\u00e1c th\u1ef1c ch\u1ee9ng ch\u1ec9 l\u00e0 ki\u1ec3m tra quy\u1ec1n ki\u1ec3m so\u00e1t c\u1ee7a b\u1ea1n \u0111\u1ed1i v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3. Ngo\u00e0i ra, m\u1ed9t s\u1ed1 lo\u1ea1i ch\u1ee9ng ch\u1ec9 n\u00e2ng cao (nh\u01b0 ch\u1ee9ng ch\u1ec9 OV, EV) c\u00f2n ki\u1ec3m tra th\u00f4ng tin v\u1ec1 t\u1ed5 ch\u1ee9c, t\u1eeb \u0111\u00f3 li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd h\u01a1n t\u00ean mi\u1ec1n v\u1edbi th\u1ef1c th\u1ec3 th\u1ef1c t\u1ebf, gi\u00fap t\u0103ng m\u1ee9c \u0111\u1ed9 tin c\u1eady.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng v\u1ec1 qu\u00e1 tr\u00ecnh qu\u1ea3n l\u00fd to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a t\u00ean mi\u1ec1n (domain name). N\u1ed9i dung bao g\u1ed3m t\u1eebng b\u01b0\u1edbc c\u1ee5 th\u1ec3 nh\u01b0 c\u00e1ch l\u1ef1a ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p, ch\u1ecdn nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, k\u00edch ho\u1ea1t ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0, qu\u1ea3n l\u00fd h\u00e0ng ng\u00e0y, chi\u1ebfn l\u01b0\u1ee3c gia h\u1ea1n, x\u00e1c nh\u1eadn quy\u1ec1n s\u1edf h\u1eefu, cho \u0111\u1ebfn c\u00e1c b\u1ea3n ghi v\u00e0 quy tr\u00ecnh li\u00ean quan \u0111\u1ebfn vi\u1ec7c gi\u1ea3i quy\u1ebft \u0111\u1ecba ch\u1ec9 DNS (Domain Name System). B\u00e0i vi\u1ebft c\u0169ng nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n, nh\u1eb1m t\u1ea1o n\u1ec1n t\u1ea3ng<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[279],"class_list":["post-12378550","knowledge_post","type-knowledge_post","status-publish","hentry","knowledge_category-domain"],"acf":{"site_seo_keywords":"\u57df\u540d\u6ce8\u518c,\u57df\u540d\u7ba1\u7406,DNS\u89e3\u6790,\u57df\u540d\u5b89\u5168,WHOIS\u9690\u79c1\u4fdd\u62a4,\u57df\u540d\u7eed\u8d39\u7b56\u7565,\u5982\u4f55\u9009\u62e9\u57df\u540d,\u57df\u540d\u89e3\u6790\u6d41\u7a0b"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12378550","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts"}],"about":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/types\/knowledge_post"}],"author":[{"embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"version-history":[{"count":0,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12378550\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12378550"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12378550"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12378550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}