{"id":69030,"date":"2023-06-01T08:48:36","date_gmt":"2023-06-01T01:48:36","guid":{"rendered":"https:\/\/wiki.tino.org\/staging\/?p=69030"},"modified":"2025-06-11T15:26:14","modified_gmt":"2025-06-11T08:26:14","slug":"wildcard-ssl-la-gi","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/wildcard-ssl-la-gi\/","title":{"rendered":"Wildcard SSL l\u00e0 g\u00ec? T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng Wildcard SSL?"},"content":{"rendered":"\n

SSL<\/a> l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin c\u00e1 nh\u00e2n v\u00e0 d\u1eef li\u1ec7u truy\u1ec1n qua m\u1ea1ng cho website. Tuy nhi\u00ean, khi b\u1ea1n c\u00f3 nhi\u1ec1u subdomain<\/a>, vi\u1ec7c mua v\u00e0 c\u1ea5u h\u00ecnh nhi\u1ec1u ch\u1ee9ng ch\u1ec9 SSL ri\u00eang l\u1ebb cho t\u1eebng subdomain s\u1ebd tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p v\u00e0 t\u1ed1n k\u00e9m. \u0110\u00e2y l\u00e0 l\u00fac Wildcard SSL xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p v\u00f4 c\u00f9ng ti\u1ec7n l\u1ee3i. V\u1eady c\u1ee5 th\u1ec3 Wildcard SSL l\u00e0 g\u00ec? T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng Wildcard SSL? C\u00e1c b\u1ea1n h\u00e3y c\u00f9ng Tino Group t\u00ecm hi\u1ec3u qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!<\/strong><\/p>\n\n\n\n

T\u1ed5ng quan v\u1ec1 Wildcard SSL<\/strong><\/h2>\n\n\n\n

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

Wildcard SSL l\u00e0 m\u1ed9t lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL (Secure Socket Layer, <\/strong>t\u1ea1m d\u1ecbch: …<\/em>) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n<\/a> ho\u1eb7c c\u00e1c subdomain. K\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t “*” (d\u1ea5u sao) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea1i di\u1ec7n cho b\u1ea5t k\u1ef3 k\u00fd t\u1ef1 ho\u1eb7c chu\u1ed7i k\u00fd t\u1ef1 n\u00e0o trong m\u1ed9t subdomain. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p \u00e1p d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL l\u00ean t\u1ea5t c\u1ea3 c\u00e1c subdomain c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3.<\/p>\n\n\n\n

V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t ch\u1ee9ng ch\u1ec9 SSL Wildcard cho t\u00ean mi\u1ec1n “example.com”, SSL s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho “mail.example.com”, “blog.example.com”, “shop.example.com” v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c subdomain kh\u00e1c.<\/p>\n\n\n

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\"wildcard-ssl-la-gi\"<\/figure>\n<\/div>\n\n\n

Vi\u1ec7c s\u1eed d\u1ee5ng Wildcard SSL mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch, thay v\u00ec ph\u1ea3i mua v\u00e0 c\u00e0i \u0111\u1eb7t nhi\u1ec1u ch\u1ee9ng ch\u1ec9 ri\u00eang l\u1ebb cho t\u1eebng subdomain, b\u1ea1n ch\u1ec9 c\u1ea7n m\u1ed9t ch\u1ee9ng ch\u1ec9 Wildcard SSL duy nh\u1ea5t \u0111\u1ec3 b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

Wildcard SSL c\u0169ng \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n trong vi\u1ec7c \u00e1p d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c subdomain. Khi b\u1ea1n th\u00eam m\u1edbi m\u1ed9t subdomain, ch\u1ee9ng ch\u1ec9 SSL Wildcard \u0111\u00e3 c\u1ea5u h\u00ecnh s\u1eb5n s\u1ebd t\u1ef1 \u0111\u1ed9ng \u00e1p d\u1ee5ng, gi\u00fap ti\u1ebft ki\u1ec7m c\u00f4ng s\u1ee9c v\u00e0 ngu\u1ed3n l\u1ef1c.<\/p>\n\n\n\n

Wildcard SSL ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h3>\n\n\n\n

Wildcard SSL ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t “*” (d\u1ea5u sao) \u0111\u1ec3 \u0111\u1ea1i di\u1ec7n cho b\u1ea5t k\u1ef3 k\u00fd t\u1ef1 ho\u1eb7c chu\u1ed7i k\u00fd t\u1ef1 n\u00e0o trong m\u1ed9t subdomain. Khi c\u00f3 y\u00eau c\u1ea7u truy c\u1eadp \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn m\u1ed9t subdomain, m\u00e1y ch\u1ee7 s\u1ebd ki\u1ec3m tra ch\u1ee9ng ch\u1ec9 SSL Wildcard \u0111\u1ec3 x\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a n\u00f3.<\/p>\n\n\n\n

Qu\u00e1 tr\u00ecnh x\u00e1c minh b\u1eb1ng Wildcard SSL g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n\n\n\n

B\u01b0\u1edbc 1: <\/strong>Y\u00eau c\u1ea7u truy c\u1eadp \u0111\u01b0\u1ee3c g\u1eedi t\u1eeb tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u1ed9t subdomain. V\u00ed d\u1ee5, “mail.example.com”.<\/p>\n\n\n\n

B\u01b0\u1edbc 2: <\/strong>M\u00e1y ch\u1ee7 nh\u1eadn y\u00eau c\u1ea7u v\u00e0 ki\u1ec3m tra ch\u1ee9ng ch\u1ec9 SSL c\u1ee7a subdomain.<\/p>\n\n\n\n

B\u01b0\u1edbc 3: <\/strong>M\u00e1y ch\u1ee7 so s\u00e1nh y\u00eau c\u1ea7u v\u1edbi th\u00f4ng tin trong ch\u1ee9ng ch\u1ec9 SSL Wildcard. N\u1ebfu y\u00eau c\u1ea7u kh\u1edbp v\u1edbi m\u1eabu \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi Wildcard (v\u00ed d\u1ee5: “*.example.com”), ch\u1ee9ng ch\u1ec9 SSL \u0111\u01b0\u1ee3c coi l\u00e0 h\u1ee3p l\u1ec7.<\/p>\n\n\n\n

B\u01b0\u1edbc 4:<\/strong> N\u1ebfu ch\u1ee9ng ch\u1ec9 SSL h\u1ee3p l\u1ec7, m\u00e1y ch\u1ee7 s\u1ebd ti\u1ebfn h\u00e0nh m\u00e3 h\u00f3a d\u1eef li\u1ec7u gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 m\u00e1y ch\u1ee7 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a th\u00f4ng tin truy\u1ec1n qua m\u1ea1ng.<\/p>\n\n\n\n

Qua qu\u00e1 tr\u00ecnh n\u00e0y, Wildcard SSL cho ph\u00e9p b\u1ea3o v\u1ec7 nhi\u1ec1u subdomain d\u01b0\u1edbi m\u1ed9t t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3 m\u00e0 ch\u1ec9 c\u1ea7n s\u1eed d\u1ee5ng m\u1ed9t ch\u1ee9ng ch\u1ec9 duy nh\u1ea5t. N\u00f3 t\u1ea1o ra m\u1ed9t k\u1ebft n\u1ed1i b\u1ea3o m\u1eadt gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 m\u00e1y ch\u1ee7 web, gi\u00fap m\u00e3 h\u00f3a d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt cho th\u00f4ng tin c\u00e1 nh\u00e2n v\u00e0 d\u1eef li\u1ec7u quan tr\u1ecdng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

D\u00f9 mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch nh\u01b0ng ch\u00fang ta v\u1eabn c\u1ea7n ch\u1eafc ch\u1eafn r\u1eb1ng ch\u1ee9ng ch\u1ec9 SSL Wildcard \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t \u0111\u00fang c\u00e1ch v\u00e0 \u0111\u01b0\u1ee3c duy tr\u00ec c\u1eadp nh\u1eadt \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt c\u0169ng nh\u01b0 hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a Wildcard SSL<\/strong><\/h2>\n\n\n\n

\u01afu \u0111i\u1ec3m <\/strong><\/h3>\n\n\n\n

B\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 subdomain<\/strong><\/h4>\n\n\n\n

V\u1edbi Wildcard SSL, b\u1ea1n ch\u1ec9 c\u1ea7n m\u1ed9t ch\u1ee9ng ch\u1ec9 duy nh\u1ea5t \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u1ea5t c\u1ea3 c\u00e1c subdomain c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3. \u0110i\u1ec1u n\u00e0y gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c so v\u1edbi vi\u1ec7c c\u00e0i \u0111\u1eb7t v\u00e0 qu\u1ea3n l\u00fd nhi\u1ec1u ch\u1ee9ng ch\u1ec9 ri\u00eang l\u1ebb cho t\u1eebng subdomain.<\/p>\n\n\n\n

Ti\u1ebft ki\u1ec7m chi ph\u00ed<\/strong><\/h4>\n\n\n\n

Wildcard SSL gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m chi ph\u00ed so v\u1edbi vi\u1ec7c mua nhi\u1ec1u ch\u1ee9ng ch\u1ec9 SSL ri\u00eang l\u1ebb cho t\u1eebng subdomain. Tuy nhi\u00ean, n\u1ebfu so v\u1edbi 1 ch\u1ee9ng ch\u1ec9 SSL ri\u00eang l\u1ebb, Wildcard SSL th\u01b0\u1eddng c\u00f3 gi\u00e1 th\u00e0nh cao h\u01a1n.<\/p>\n\n\n\n

D\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng<\/strong><\/h4>\n\n\n\n

Khi b\u1ea1n mu\u1ed1n th\u00eam m\u1edbi subdomain v\u00e0o h\u1ec7 th\u1ed1ng, Wildcard SSL s\u1ebd t\u1ef1 \u0111\u1ed9ng \u00e1p d\u1ee5ng ch\u1ee9ng ch\u1ec9 cho subdomain m\u1edbi m\u00e0 kh\u00f4ng c\u1ea7n c\u1ea5u h\u00ecnh th\u00eam. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n trong vi\u1ec7c \u00e1p d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL tr\u00ean c\u00e1c subdomain, \u0111\u1ed3ng th\u1eddi gi\u00fap m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng d\u1ec5 d\u00e0ng v\u00e0 ti\u1ebft ki\u1ec7m c\u00f4ng s\u1ee9c.<\/p>\n\n\n\n

\u0110\u00e1ng tin c\u1eady v\u00e0 b\u1ea3o m\u1eadt<\/strong><\/h4>\n\n\n\n

Wildcard SSL \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 m\u00e1y ch\u1ee7 web. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra ni\u1ec1m tin v\u00e0 s\u1ef1 an t\u00e2m cho kh\u00e1ch h\u00e0ng khi giao d\u1ecbch tr\u1ef1c tuy\u1ebfn v\u00e0 chia s\u1ebb th\u00f4ng tin c\u00e1 nh\u00e2n.<\/p>\n\n\n\n

H\u1ea1n ch\u1ebf<\/strong><\/h3>\n\n\n\n