{"id":12376360,"date":"2026-03-18T16:57:31","date_gmt":"2026-03-18T08:57:31","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e5%85%a8%e9%9d%a2%e8%a7%a3%e6%9e%90ssl%e8%af%81%e4%b9%a6%ef%bc%9a%e4%bb%8e%e5%8e%9f%e7%90%86%e5%88%b0%e9%83%a8%e7%bd%b2%e7%9a%84%e5%ae%8c%e6%95%b4%e6%8c%87%e5%8d%97\/"},"modified":"2026-03-18T17:08:46","modified_gmt":"2026-03-18T09:08:46","slug":"complete-guide-to-ssl-certificates-from-principles-to-deployment","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/complete-guide-to-ssl-certificates-from-principles-to-deployment\/","title":{"rendered":"Ph\u00e2n t\u00edch to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 t\u1eeb nguy\u00ean l\u00fd \u0111\u1ebfn tri\u1ec3n khai"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Trong m\u00f4i tr\u01b0\u1eddng internet ng\u00e0y nay, vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch an to\u00e0n l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c trang web. Ch\u1ee9ng ch\u1ec9 SSL, v\u1edbi vai tr\u00f2 l\u00e0 c\u00f4ng ngh\u1ec7 then ch\u1ed1t \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u theo giao th\u1ee9c HTTPS, \u0111\u00e3 kh\u00f4ng c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 \u0111\u1eb7c quy\u1ec1n c\u1ee7a c\u00e1c trang web l\u1edbn n\u1eefa, m\u00e0 tr\u1edf th\u00e0nh y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c trang web. N\u00f3 gi\u1ed1ng nh\u01b0 \u201cchi\u1ebfc ch\u00eca kh\u00f3a k\u1ef9 thu\u1eadt s\u1ed1\u201d b\u1ea3o v\u1ec7 trang web, t\u1ea1o ra m\u1ed9t k\u00eanh truy\u1ec1n th\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a gi\u1eefa ng\u01b0\u1eddi truy c\u1eadp v\u00e0 m\u00e1y ch\u1ee7, \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb nghe l\u00e9n ho\u1eb7c s\u1eeda \u0111\u1ed5i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao th\u1ee9c SSL\/TLS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c v\u1eadn h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL ph\u1ee5 thu\u1ed9c v\u00e0o giao th\u1ee9c SSL\/TLS. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 s\u1ebd gi\u00fap ch\u00fang ta nh\u1eadn th\u1ee9c r\u00f5 h\u01a1n v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a ch\u1ee9ng ch\u1ec9 n\u00e0y. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a giao th\u1ee9c SSL\/TLS l\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt, to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 x\u00e1c th\u1ef1c danh t\u00ednh trong qu\u00e1 tr\u00ecnh truy\u1ec1n th\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng v\u00e0 m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Giao th\u1ee9c SSL\/TLS k\u1ebft h\u1ee3p m\u1ed9t c\u00e1ch kh\u00e9o l\u00e9o hai ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a kh\u00e1c nhau. Trong giai \u0111o\u1ea1n \u201cgiao ti\u1ebfp ban \u0111\u1ea7u\u201d (g\u1ecdi l\u00e0 qu\u00e1 tr\u00ecnh \u201chandshake\u201d), ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng (nh\u01b0 RSA, ECC) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. M\u00e1y ch\u1ee7 gi\u1eef kh\u00f3a ri\u00eang, trong khi ch\u1ee9ng ch\u1ec9 SSL ch\u1ee9a kh\u00f3a c\u00f4ng \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn tr\u00ecnh duy\u1ec7t. Tr\u00ecnh duy\u1ec7t s\u1eed d\u1ee5ng kh\u00f3a c\u00f4ng \u0111\u1ec3 m\u00e3 h\u00f3a m\u1ed9t \u201ckh\u00f3a ch\u00ednh t\u1ea1m th\u1eddi\u201d \u0111\u01b0\u1ee3c t\u1ea1o ng\u1eabu nhi\u00ean v\u00e0 g\u1eedi tr\u1edf l\u1ea1i m\u00e1y ch\u1ee7; ch\u1ec9 m\u00e1y ch\u1ee7 s\u1edf h\u1eefu kh\u00f3a ri\u00eang t\u01b0\u01a1ng \u1ee9ng m\u1edbi c\u00f3 th\u1ec3 gi\u1ea3i m\u00e3 kh\u00f3a \u0111\u00f3. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o an to\u00e0n cho vi\u1ec7c trao \u0111\u1ed5i kh\u00f3a gi\u1eefa hai b\u00ean.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/nl\/knowledge\/ssl-certificate\/what-is-ssl-certificate-complete-guide-principles-application-installation-2\/\">Ch\u1ee9ng ch\u1ec9 SSL l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 t\u1eeb nguy\u00ean l\u00fd \u0111\u1ebfn \u0111\u0103ng k\u00fd v\u00e0 c\u00e0i \u0111\u1eb7t cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi qu\u00e1 tr\u00ecnh b\u1eaft tay (handshake) di\u1ec5n ra th\u00e0nh c\u00f4ng, hai b\u00ean s\u1eed d\u1ee5ng \u201ckh\u00f3a ch\u1ee7 tr\u01b0\u1edbc\u201d (pre-master key) \u0111\u1ec3 t\u1ea1o ra \u201ckh\u00f3a cu\u1ed9c tr\u00f2 chuy\u1ec7n\u201d (session key) gi\u1ed1ng nhau. T\u1ea5t c\u1ea3 c\u00e1c l\u1ea7n truy\u1ec1n d\u1eef li\u1ec7u sau \u0111\u00f3 \u0111\u1ec1u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng (ch\u1eb3ng h\u1ea1n nh\u01b0 AES). Ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng c\u00f3 t\u1ed1c \u0111\u1ed9 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 nhanh, ph\u00f9 h\u1ee3p \u0111\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn; tuy nhi\u00ean, \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft l\u00e0 c\u1ea3 hai b\u00ean ph\u1ea3i chia s\u1ebb chung m\u1ed9t kh\u00f3a m\u1ed9t c\u00e1ch an to\u00e0n, v\u00e0 \u0111\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec1u m\u00e0 giai \u0111o\u1ea1n m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x<\/p>\n<!-- AUTO_SYNCED_PATTERN_INSERT_START -->\n<div class=\"grid grid-cols-1 md:grid-cols-2 gap-4 md:gap-6 mb-8 md:mb-10 mt-10\"> \r\n\t<!-- \u91cd\u590d\u5668\u5faa\u73af\u5f00\u59cb -->\r\n\t\t\r\n\t<!-- \u5546\u5bb6\u5361\u7247 -->\r\n\t<div class=\"bg-white dark:bg-gray-750 rounded-lg overflow-hidden shadow-md flex gap-1 flex-col     justify-between\" data-link=\"https:\/\/www.likacloud.com\/vi\/tolink\/bluehost-ssl-certificates\/\">\r\n\t\t<div class=\"flex items-start justify-between\"> \r\n\t\t\t<!-- \u5546\u5bb6logo -->\r\n\t\t\t<div class=\"w-16 h-16 bg-blue-200 dark:bg-blue-500\/30 flex items-center justify-center flex-shrink-0 p-3\">\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251231095917.webp\" alt=\"Ch\u1ee9ng ch\u1ec9 SSL Bluehost\" class=\"w-12 object-contain !dark-filter08\" title=\"\">\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<!-- \u5546\u5bb6\u4fe1\u606f -->\r\n\t\t\t<div class=\"px-4 pt-2 flex-grow\">\r\n\t\t\t\t<div class=\"flex justify-between items-start mb-2\">\r\n\t\t\t\t\t<strong class=\"text-xl font-bold\">Ch\u1ee9ng ch\u1ec9 SSL 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\t<span class=\"text-gray-500 dark:text-gray-300 !text-sm p-4 pb-0\">BlueHost SSL cung c\u1ea5p t\u00f9y ch\u1ecdn gia h\u1ea1n t\u1eeb 1-2 n\u0103m, h\u1ed7 tr\u1ee3 thu\u1eadt to\u00e1n RSA ho\u1eb7c ECC, \u0111\u1ed9 d\u00e0i kh\u00f3a l\u00ean \u0111\u1ebfn 4096 bit v\u00e0 b\u1ea3o hi\u1ec3m l\u00ean \u0111\u1ebfn 1,75 tri\u1ec7u USD.<\/span>\r\n\t\t\t\t<div class=\"flex flex-col gap-4 md:gap-6 justify-between p-4\"> \r\n\t\t\t<!-- \u6807\u7b7e -->\r\n\t\t\t\t\t\t\r\n\t\t\t<!-- \u6d3b\u52a8\u548c\u94fe\u63a5 --> \r\n\t\t\t<div class=\"flex justify-between items-center gap-3 flex-col\">\r\n\t\t\t\t\t\t\t\t<div class=\"text-gray-500 dark:text-gray-300 !text-sm line-clamp-1\">T\u1eeb 7,49 USD m\u1ed7i th\u00e1ng<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.likacloud.com\/vi\/tolink\/bluehost-ssl-certificates\/\" class=\"flex justify-end font-bold !text-lg !text-blue-600 dark:!text-blue-500\">Truy c\u1eadp ch\u1ee9ng ch\u1ec9 SSL Bluehost \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<!-- \u5546\u5bb6\u5361\u7247 -->\r\n\t<div class=\"bg-white dark:bg-gray-750 rounded-lg overflow-hidden shadow-md flex gap-1 flex-col     justify-between\" data-link=\"https:\/\/www.likacloud.com\/vi\/tolink\/hosting-com-ssl-certificates\/\">\r\n\t\t<div class=\"flex items-start justify-between\"> \r\n\t\t\t<!-- \u5546\u5bb6logo -->\r\n\t\t\t<div class=\"w-16 h-16 bg-blue-200 dark:bg-blue-500\/30 flex items-center justify-center flex-shrink-0 p-3\">\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251227070008.webp\" alt=\"Ch\u1ee9ng ch\u1ec9 SSL hosting.com\" class=\"w-12 object-contain !dark-filter08\" title=\"\">\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<!-- \u5546\u5bb6\u4fe1\u606f -->\r\n\t\t\t<div class=\"px-4 pt-2 flex-grow\">\r\n\t\t\t\t<div class=\"flex justify-between items-start mb-2\">\r\n\t\t\t\t\t<strong class=\"text-xl font-bold\">Ch\u1ee9ng ch\u1ec9 SSL hosting.com<\/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\t<span class=\"text-gray-500 dark:text-gray-300 !text-sm p-4 pb-0\">Ch\u1ee9ng ch\u1ec9 SSL DV, OV, EV gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng, m\u00e3 h\u00f3a l\u00ean \u0111\u1ebfn 256 bit, s\u1ed1 ti\u1ec1n b\u1ea3o \u0111\u1ea3m t\u1eeb 5 ~ 100 tri\u1ec7u USD, h\u1ed7 tr\u1ee3 24\/7<\/span>\r\n\t\t\t\t<div class=\"flex flex-col gap-4 md:gap-6 justify-between p-4\"> \r\n\t\t\t<!-- \u6807\u7b7e -->\r\n\t\t\t\t\t\t\r\n\t\t\t<!-- \u6d3b\u52a8\u548c\u94fe\u63a5 --> \r\n\t\t\t<div class=\"flex justify-between items-center gap-3 flex-col\">\r\n\t\t\t\t\t\t\t\t<div class=\"text-gray-500 dark:text-gray-300 !text-sm line-clamp-1\">B\u1eaft \u0111\u1ea7u t\u1eeb $2.5 USD m\u1ed7i th\u00e1ng<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.likacloud.com\/vi\/tolink\/hosting-com-ssl-certificates\/\" class=\"flex justify-end font-bold !text-lg !text-blue-600 dark:!text-blue-500\">Truy c\u1eadp hosting.com Ch\u1ee9ng ch\u1ec9 SSL \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<!-- \u91cd\u590d\u5668\u5faa\u73af\u7ed3\u675f -->\r\n<\/div>\r\n\r\n\r\n\n<!-- AUTO_SYNCED_PATTERN_INSERT_END -->\n\n\n\n\n\n<h3 class=\"wp-block-heading\">Quy tr\u00ecnh b\u1eaft tay TLS chi ti\u1ebft<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t quy tr\u00ecnh giao ti\u1ebfp TLS (Transport Layer Security) \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m c\u00e1c b\u01b0\u1edbc ch\u00ednh sau:<br \/>\n1. Kh\u00e1ch h\u00e0ng g\u1eedi th\u00f4ng b\u00e1o \u201cClient Hello\u201d \u0111\u1ebfn m\u00e1y ch\u1ee7, bao g\u1ed3m phi\u00ean b\u1ea3n TLS m\u00e0 h\u1ecd h\u1ed7 tr\u1ee3, danh s\u00e1ch c\u00e1c b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a (encryption suites), v\u00e0 m\u1ed9t s\u1ed1 ng\u1eabu nhi\u00ean.<br \/>\n2. M\u00e1y ch\u1ee7 tr\u1ea3 l\u1eddi th\u00f4ng b\u00e1o \u201cServer Hello\u201d, ch\u1ecdn phi\u00ean b\u1ea3n TLS v\u00e0 b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a m\u00e0 c\u1ea3 hai b\u00ean \u0111\u1ec1u h\u1ed7 tr\u1ee3, sau \u0111\u00f3 g\u1eedi \u0111i s\u1ed1 ng\u1eabu nhi\u00ean c\u1ee7a m\u00ecnh c\u00f9ng v\u1edbi ch\u1ee9ng ch\u1ec9 SSL.<br \/>\n3. Kh\u00e1ch h\u00e0ng ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a ch\u1ee9ng ch\u1ec9 m\u00e1y ch\u1ee7 (xem li\u1ec7u ch\u1ee9ng ch\u1ec9 c\u00f3 \u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi m\u1ed9t t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA) \u0111\u00e1ng tin c\u1eady hay kh\u00f4ng, li\u1ec7u ch\u1ee9ng ch\u1ec9 c\u00f2n trong th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng hay kh\u00f4ng, li\u1ec7u t\u00ean mi\u1ec1n c\u00f3 tr\u00f9ng kh\u1edbp v\u1edbi t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u hay kh\u00f4ng, v.v.). Sau khi ki\u1ec3m tra th\u00e0nh c\u00f4ng, kh\u00e1ch h\u00e0ng s\u1ebd d\u00f9ng kh\u00f3a c\u00f4ng khai trong ch\u1ee9ng ch\u1ec9 \u0111\u1ec3 m\u00e3 h\u00f3a \u201ckh\u00f3a ch\u00ednh s\u01a1 b\u1ed9\u201d v\u00e0 g\u1eedi n\u00f3 \u0111\u1ebfn m\u00e1y ch\u1ee7.<br \/>\n4. M\u00e1y ch\u1ee7 s\u1eed d\u1ee5ng kh\u00f3a ri\u00eang c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u1ea3i m\u00e3 v\u00e0 thu \u0111\u01b0\u1ee3c \u201ckh\u00f3a ch\u1ee7 tr\u01b0\u1edbc\u201d (pre-master key). \u0110\u1ebfn \u0111\u00e2y, c\u1ea3 m\u00e1y kh\u00e1ch l\u1eabn m\u00e1y ch\u1ee7 \u0111\u1ec1u s\u1edf h\u1eefu hai s\u1ed1 ng\u1eabu nhi\u00ean c\u00f9ng v\u1edbi kh\u00f3a ch\u1ee7 tr\u01b0\u1edbc; t\u1eeb \u0111\u00f3, m\u1ed7i b\u00ean \u0111\u1ec1u t\u1ef1 t\u1ea1o ra \u201ckh\u00f3a ch\u1ee7\u201d (master key) v\u00e0 \u201ckh\u00f3a phi\u00ean\u201d (session key) gi\u1ed1ng h\u1ec7t nhau.<br \/>\n5. Hai b\u00ean trao \u0111\u1ed5i th\u00f4ng \u0111i\u1ec7p \u201cFinished\u201d sau khi qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a ho\u00e0n t\u1ea5t, \u0111\u1ec3 x\u00e1c minh xem li\u1ec7u qu\u00e1 tr\u00ecnh thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i (handshake) c\u00f3 b\u1ecb s\u1eeda \u0111\u1ed5i hay kh\u00f4ng. Sau khi x\u00e1c minh th\u00e0nh c\u00f4ng, k\u00eanh truy\u1ec1n th\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a s\u1ebd \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp ch\u00ednh th\u1ee9c, v\u00e0 vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u \u1edf t\u1ea7ng \u1ee9ng d\u1ee5ng s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL c\u1ed1t l\u00f5i v\u00e0 c\u00e1ch l\u1ef1a ch\u1ecdn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL tr\u00ean th\u1ecb tr\u01b0\u1eddng, vi\u1ec7c ph\u00e2n lo\u1ea1i ch\u00fang d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c v\u00e0 ch\u1ee9c n\u0103ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u01b0a ra l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u00e2n lo\u1ea1i theo c\u1ea5p \u0111\u1ed9 x\u00e1c th\u1ef1c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 ki\u1ec3m tra quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n (Domain Name Validation Certificate): \u0110\u00e2y l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 c\u01a1 b\u1ea3n nh\u1ea5t. C\u01a1 quan c\u1ea5p ch\u1ee9ng ch\u1ec9 ch\u1ec9 ki\u1ec3m tra quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n c\u1ee7a ng\u01b0\u1eddi n\u1ed9p \u0111\u01a1n (th\u01b0\u1eddng th\u00f4ng qua email ho\u1eb7c d\u1ecbch v\u1ee5 DNS). Qu\u00e1 tr\u00ecnh c\u1ea5p ch\u1ee9ng ch\u1ec9 di\u1ec5n ra nhanh ch\u00f3ng v\u00e0 chi ph\u00ed th\u1ea5p, ph\u00f9 h\u1ee3p cho c\u00e1c trang web c\u00e1 nh\u00e2n, blog ho\u1eb7c m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u b\u1eb1ng giao th\u1ee9c HTTPS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c: D\u1ef1a tr\u00ean n\u1ec1n t\u1ea3ng x\u00e1c th\u1ef1c DV, CA s\u1ebd x\u00e1c minh t\u00ednh t\u1ed3n t\u1ea1i th\u1ef1c t\u1ebf c\u1ee7a doanh nghi\u1ec7p \u0111\u0103ng k\u00fd (nh\u01b0 th\u00f4ng tin \u0111\u0103ng k\u00fd kinh doanh). Ch\u1ee9ng ch\u1ec9 s\u1ebd bao g\u1ed3m th\u00f4ng tin nh\u01b0 t\u00ean c\u00f4ng ty. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p \u0111\u1ed9 tin c\u1eady cao h\u01a1n so v\u1edbi ch\u1ee9ng ch\u1ec9 DV, ph\u00f9 h\u1ee3p cho website ch\u00ednh th\u1ee9c c\u1ee7a doanh nghi\u1ec7p v\u00e0 c\u00e1c trang web th\u01b0\u01a1ng m\u1ea1i th\u00f4ng th\u01b0\u1eddng, nh\u1eb1m th\u1ec3 hi\u1ec7n t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a t\u1ed5 ch\u1ee9c v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/nl\/knowledge\/ssl-certificate\/ssl-certificate-guide-types-deployment-best-practices\/\">Gi\u1ea3i th\u00edch to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, l\u1ef1a ch\u1ecdn lo\u1ea1i v\u00e0 th\u1ef1c ti\u1ec5n tri\u1ec3n khai t\u1ed1t nh\u1ea5t<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 c\u00f3 x\u00e1c th\u1ef1c m\u1edf r\u1ed9ng (Extended Validation Certificate): \u0110\u00e2y l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 c\u00f3 m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c ch\u1eb7t ch\u1ebd nh\u1ea5t v\u00e0 c\u1ea5p \u0111\u1ed9 tin c\u1eady cao nh\u1ea5t. C\u01a1 quan c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority) s\u1ebd ti\u1ebfn h\u00e0nh ki\u1ec3m tra danh t\u00ednh ng\u01b0\u1eddi d\u00f9ng m\u1ed9t c\u00e1ch nghi\u00eam ng\u1eb7t, bao g\u1ed3m x\u00e1c minh t\u00ednh h\u1ee3p ph\u00e1p c\u1ee7a doanh nghi\u1ec7p, \u0111\u1ecba ch\u1ec9 v\u1eadt l\u00fd, x\u00e1c nh\u1eadn th\u00f4ng tin qua \u0111i\u1ec7n tho\u1ea1i, v.v. Trong thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t, t\u00ean c\u00f4ng ty s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng m\u00e0u xanh l\u00e1 (ho\u1eb7c k\u00e8m theo bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a), mang l\u1ea1i s\u1ef1 \u0111\u1ea3m b\u1ea3o v\u1ec1 danh t\u00ednh m\u1ea1nh m\u1ebd nh\u1ea5t cho ng\u01b0\u1eddi d\u00f9ng. Lo\u1ea1i ch\u1ee9ng ch\u1ec9 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1c trang web y\u00eau c\u1ea7u m\u1ee9c \u0111\u1ed9 tin c\u1eady r\u1ea5t cao, nh\u01b0 ng\u00e2n h\u00e0ng, c\u00e1c n\u1ec1n t\u1ea3<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u00e2n lo\u1ea1i theo s\u1ed1 l\u01b0\u1ee3ng t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c bao ph\u1ee7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 t\u00ean mi\u1ec1n \u0111\u01a1n: Ch\u1ec9 b\u1ea3o v\u1ec7 m\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a \u0111\u1ea7y \u0111\u1ee7 (v\u00ed d\u1ee5: example.com). <code data-no-auto-translation=\"\">www.example.com<\/code> \u6216 <code data-no-auto-translation=\"\">example.com<\/code>Th\u00f4ng th\u01b0\u1eddng, ch\u1ec9 c\u00f3 m\u1ed9t t\u00ednh n\u0103ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 (ho\u1eb7c h\u1ed7 tr\u1ee3), t\u00f9y thu\u1ed9c v\u00e0o h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng c\u1ee7a s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 \u0111a t\u00ean mi\u1ec1n: M\u1ed9t ch\u1ee9ng ch\u1ec9 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n ho\u00e0n to\u00e0n kh\u00e1c nhau (v\u00ed d\u1ee5:\u2026) <code data-no-auto-translation=\"\">example.com<\/code>, <code data-no-auto-translation=\"\">example.net<\/code>, <code data-no-auto-translation=\"\">shop.othersite.com<\/code>Vi\u1ec7c qu\u1ea3n l\u00fd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<!-- AUTO_SYNCED_PATTERN_INSERT_START -->\n\n  <div class=\"flex justify-between items-center flex-col lg:flex-row xl:flex-col 2xl:flex-row gap-6 sm:gap-8 rounded-lg border border-gray-200 dark:border-gray-700 p-4 mb-8 lg:mb-10 sm:p-6 bg-white dark:bg-gray-750 shadow-md transition-colors duration-300\"\n         data-link=\"https:\/\/www.likacloud.com\/vi\/tolink\/ultahost-ssl-certificates\/\">\n\n      <div class=\"flex flex-col gap-3 gap-4 sm:gap-6 w-full\">\n        <strong class=\"text-2xl font-semibold text-gray-900 dark:text-gray-200\">Ch\u1ee9ng ch\u1ec9 SSL c\u1ee7a UltaHost<\/strong>\n        <div class=\"text-gray-600 dark:text-gray-300 word-word\">Ch\u1ee9ng ch\u1ec9 DV, EV, OV, h\u1ed7 tr\u1ee3 m\u1ee9c b\u1ea3o hi\u1ec3m t\u1ed1i \u0111a $1,750,000 USD, h\u1ed7 tr\u1ee3 v\u00f4 s\u1ed1 t\u00ean mi\u1ec1n ph\u1ee5, h\u1ed7 tr\u1ee3 c\u00e1c \u1ee9ng d\u1ee5ng iOS v\u00e0 Android, \u01b0u \u0111\u00e3i gi\u00e1 t\u1eeb 20% m\u1ed7i th\u00e1ng, v\u1edbi m\u1ee9c ph\u00ed $15,95 USD, b\u1ea3o l\u00e3nh ho\u00e0n ti\u1ec1n trong v\u00f2ng 30 ng\u00e0y.<\/div>\n      <\/div>\n\n      <div class=\"flex items-center flex-col md:flex-row lg:flex-col xl:flex-row 2xl:flex-col gap-6 shrink-0\">\n                  <a href=\"https:\/\/www.likacloud.com\/vi\/tolink\/ultahost-ssl-certificates\/\">\n                          <!-- \u767d\u5929 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251227020448.webp\" alt=\"Logo ch\u1ee9ng ch\u1ec9 SSL\" class=\"content-promotion-card-icon h-9 min-h-9 dark:hidden\" title=\"\">\n              <!-- \u591c\u95f4 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251229052118.webp\" alt=\"Logo ch\u1ee9ng ch\u1ec9 SSL\" class=\"content-promotion-card-icon h-9 min-h-9 hidden dark:block\" title=\"\">\n                      <\/a>\n          \n        <a href=\"https:\/\/www.likacloud.com\/vi\/tolink\/ultahost-ssl-certificates\/\"\n           class=\"bg-blue-500 w-full md:w-auto lg:w-full xl:w-auto 2xl:w-full text-center !text-white dark:!text-gray-200 !px-5 !py-1.5 rounded-full hover:bg-blue-600 transition-colors\">\n          Truy c\u1eadp UltaHost        <\/a>\n      <\/div>\n    <\/div>\n\n    \n<!-- AUTO_SYNCED_PATTERN_INSERT_END -->\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n: C\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n ph\u1ee5 c\u1ea5p ngang h\u00e0ng c\u1ee7a n\u00f3 (v\u00ed d\u1ee5 <code data-no-auto-translation=\"\">*.example.com<\/code> C\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 <code data-no-auto-translation=\"\">blog.example.com<\/code>, <code data-no-auto-translation=\"\">shop.example.com<\/code>, <code data-no-auto-translation=\"\">dev.example.com<\/code> \u0110\u1ed1i v\u1edbi nh\u1eefng doanh nghi\u1ec7p s\u1edf h\u1eefu m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn t\u00ean mi\u1ec1n con, \u0111\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn v\u1edbi t\u1ef7 l\u1ec7 gi\u00e1 tr\u1ecb so v\u1edbi chi ph\u00ed c\u1ef1c k\u1ef3 cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 xin v\u00e0 tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb khi n\u1ed9p \u0111\u01a1n \u0111\u1ebfn khi tri\u1ec3n khai th\u00e0nh c\u00f4ng, c\u1ea7n tr\u1ea3i qua m\u1ed9t s\u1ed1 b\u01b0\u1edbc c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quy tr\u00ecnh n\u1ed9p \u0111\u01a1n v\u00e0 x\u00e1c th\u1ef1c ch\u1ee9ng ch\u1ec9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc ti\u00ean, b\u1ea1n c\u1ea7n t\u1ea1o m\u1ed9t y\u00eau c\u1ea7u k\u00fd ch\u1ee9ng ch\u1ec9 (Certificate Signing Request \u2013 CSR) tr\u00ean m\u00e1y ch\u1ee7. \u0110\u00e2y l\u00e0 m\u1ed9t t\u1ec7p v\u0103n b\u1ea3n \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, ch\u1ee9a kh\u00f3a c\u00f4ng khai c\u1ee7a b\u1ea1n c\u00f9ng v\u1edbi th\u00f4ng tin v\u1ec1 c\u00f4ng ty (t\u00ean mi\u1ec1n, t\u1ed5 ch\u1ee9c, \u0111\u1ecba \u0111i\u1ec3m, v.v.). Khi t\u1ea1o CSR, m\u1ed9t c\u1eb7p kh\u00f3a c\u00f4ng khai v\u00e0 kh\u00f3a ri\u00eang s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra; kh\u00f3a ri\u00eang ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef m\u1ed9t c\u00e1ch an to\u00e0n tr\u00ean m\u00e1y ch\u1ee7 v\u00e0 tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9 cho b\u1ea5t k\u1ef3 b\u00ean n\u00e0o.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/nl\/knowledge\/ssl-certificate\/ssl-certificate-types-application-process-security-deployment-best-practices\/\">Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: C\u00e1c lo\u1ea1i, quy tr\u00ecnh \u0111\u0103ng k\u00fd v\u00e0 th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t tri\u1ec3n khai b\u1ea3o m\u1eadt<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">Sau \u0111\u00f3, h\u00e3y g\u1eedi y\u00eau c\u1ea7u x\u00e1c th\u1ef1c (CSR \u2013 Certificate Signing Request) \u0111\u1ebfn CA (Certificate Authority) m\u00e0 b\u1ea1n \u0111\u00e3 ch\u1ecdn v\u00e0 l\u1ef1a ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 c\u1ea7n thi\u1ebft. CA s\u1ebd ti\u1ebfn h\u00e0nh x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c m\u00e0 b\u1ea1n \u0111\u00e3 ch\u1ecdn. \u0110\u1ed1i v\u1edbi ch\u1ee9ng ch\u1ec9 DV (Domain Validation), qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c ho\u00e0n t\u1ea5t trong v\u00e0i ph\u00fat; trong khi \u0111\u00f3, ch\u1ee9ng ch\u1ec9 OV (Organization Validation) v\u00e0 EV (Extended Validation) c\u1ea7n th\u1eddi gian t\u1eeb v\u00e0i ng\u00e0y l\u00e0m vi\u1ec7c \u0111\u1ec3 x\u00e1c th<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, CA (Certificate Authority) s\u1ebd c\u1ea5p t\u00e0i li\u1ec7u ch\u1ee9ng ch\u1ec9 (th\u01b0\u1eddng l\u00e0 m\u1ed9t t\u1ec7p tin ch\u1ee9a th\u00f4ng tin ch\u1ee9ng ch\u1ec9 s\u1ed1). <code data-no-auto-translation=\"\">.crt<\/code> \u6216 <code data-no-auto-translation=\"\">.pem<\/code> B\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng \u0111\u1ecbnh d\u1ea1ng n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi kh\u00f3a ri\u00eang (private key) \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o tr\u01b0\u1edbc \u0111\u00f3, \u0111\u1ec3 tri\u1ec3n khai ch\u00fang tr\u00ean m\u00e1y ch\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tri\u1ec3n khai v\u00e0 c\u1ea5u h\u00ecnh tr\u00ean m\u00e1y ch\u1ee7 web<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ea5y c\u00e1c m\u00e1y ch\u1ee7 ph\u1ed5 bi\u1ebfn nh\u01b0 Nginx v\u00e0 Apache l\u00e0m v\u00ed d\u1ee5:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong Nginx, vi\u1ec7c c\u1ea5u h\u00ecnh ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eeda \u0111\u1ed5i c\u00e1c kh\u1ed1i m\u00e1y ch\u1ee7 (server blocks). C\u00e1c l\u1ec7nh quan tr\u1ecdng l\u00e0 \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1edbi ch\u1ee9ng ch\u1ec9 v\u00e0 kh\u00f3a ri\u00eang t\u01b0:<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-auto-translation=\"\"><code data-no-auto-translation=\"\">ssl_certificate \/path\/to\/your_domain.crt;\nssl_certificate_key \/path\/to\/your_private.key;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed3ng th\u1eddi, c\u1ea7n theo d\u00f5i c\u1ed5ng 443 v\u00e0 k\u00edch ho\u1ea1t giao th\u1ee9c SSL:<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-auto-translation=\"\"><code data-no-auto-translation=\"\">listen 443 ssl;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Trong Apache, b\u1ea1n c\u1ea7n k\u00edch ho\u1ea1t module SSL trong c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u1ea3o (virtual host) v\u00e0 ch\u1ec9 \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1edbi t\u1ec7p ch\u1ee9ng ch\u1ec9 (certificate file).<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-auto-translation=\"\"><code data-no-auto-translation=\"\">SSLEngine on\nSSLCertificateFile \/path\/to\/your_domain.crt\nSSLCertificateKeyFile \/path\/to\/your_private.key<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi qu\u00e1 tr\u00ecnh tri\u1ec3n khai ho\u00e0n t\u1ea5t, h\u00e3y nh\u1edb s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ki\u1ec3m tra xem chu\u1ed7i ch\u1ee9ng ch\u1ec9 c\u00f3 \u0111\u1ea7y \u0111\u1ee7 kh\u00f4ng, c\u1ea5u h\u00ecnh c\u00f3 ch\u00ednh x\u00e1c hay kh\u00f4ng, v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng to\u00e0n b\u1ed9 l\u01b0u l\u01b0\u1ee3ng HTTP \u0111\u1ec1u \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng sang HTTPS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u1ea5u h\u00ecnh n\u00e2ng cao v\u00e0 th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 ch\u1ec9 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean; vi\u1ec7c c\u1ea5u h\u00ecnh v\u00e0 b\u1ea3o tr\u00ec ch\u00fang m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c m\u1edbi l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh l\u00e2u d\u00e0i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u00edch ho\u1ea1t ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt HSTS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">HTTP Strict Transport Security (HTTS) l\u00e0 m\u1ed9t ti\u00eau \u0111\u1ec1 ph\u1ea3n h\u1ed3i b\u1ea3o m\u1eadt quan tr\u1ecdng. N\u00f3 th\u00f4ng b\u00e1o cho tr\u00ecnh duy\u1ec7t r\u1eb1ng, trong kho\u1ea3ng th\u1eddi gian ti\u1ebfp theo (\u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00e1c thi\u1ebft l\u1eadp c\u1ee5 th\u1ec3), t\u1ea5t c\u1ea3 c\u00e1c giao d\u1ecbch tr\u00ean trang web ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua k\u00eanh truy\u1ec1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a an to\u00e0n. \u0110i\u1ec1 <code data-no-auto-translation=\"\">max-age<\/code> (The domain name can only be accessed via HTTPS, as specified.) This measure effectively prevents SSL stripping attacks and protocol downgrade attacks. After the configuration is applied, even if users manually enter the URL... <code data-no-auto-translation=\"\">http:\/\/<\/code>tr\u00ecnh duy\u1ec7t c\u0169ng s\u1ebd bu\u1ed9c chuy\u1ec3n th\u00e0nh <code data-no-auto-translation=\"\">https:\/\/<\/code> Truy c\u1eadp.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng v\u00e0 c\u1eadp nh\u1eadt kh\u00f3a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh giao ti\u1ebfp TLS (Transport Layer Security) l\u00e0 m\u1ed9t thao t\u00e1c \u0111\u00f2i h\u1ecfi nhi\u1ec1u t\u00ednh to\u00e1n, v\u00e0 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 tr\u1ec5 trong vi\u1ec7c k\u1ebft n\u1ed1i. Vi\u1ec7c k\u00edch ho\u1ea1t c\u00e1c c\u01a1 ch\u1ebf kh\u00f4i ph\u1ee5c phi\u00ean (session recovery mechanisms) c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed x\u1eed l\u00fd khi thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i l\u1ea7n sau. V\u00ed d\u1ee5, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c tham s\u1ed1 nh\u1eadn di\u1ec7n phi\u00ean (session identifiers) ho\u1eb7c c\u00e1c ch\u1ee9ng ch\u1ec9 TLS (TLS<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i ra, vi\u1ec7c quan t\u00e2m \u0111\u1ebfn c\u1ea5u h\u00ecnh c\u00e1c b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a l\u00e0 r\u1ea5t quan tr\u1ecdng. C\u00e1c giao th\u1ee9c l\u1ed7i th\u1eddi v\u00e0 kh\u00f4ng an to\u00e0n (nh\u01b0 SSL 2.0\/3.0, th\u1eadm ch\u00ed TLS 1.0\/1.1) c\u0169ng nh\u01b0 c\u00e1c b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a y\u1ebfu (ch\u1ee9a c\u00e1c thu\u1eadt to\u00e1n nh\u01b0 RC4, DES) n\u00ean b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a. N\u00ean \u01b0u ti\u00ean s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a c\u00f3 t\u00ednh b\u1ea3o m\u1eadt cao (nh\u01b0 ECDHE); nh\u1edd \u0111\u00f3, ngay c\u1ea3 khi kh\u00f3a ri\u00eang c\u1ee7a m\u00e1y ch\u1ee7 b\u1ecb l\u1ed9 trong t\u01b0\u01a1ng lai, c\u00e1c giao d\u1ecbch tr\u01b0\u1edbc \u0111\u00f3 v\u1eabn kh\u00f4ng th\u1ec3 b\u1ecb gi\u1ea3i m\u00e3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SSL ch\u1ee9ng ch\u1ec9 c\u00f3 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng nh\u1ea5t \u0111\u1ecbnh (hi\u1ec7n t\u1ea1i l\u00e0 t\u1ed1i \u0111a 398 ng\u00e0y). C\u1ea7n thi\u1ebft ph\u1ea3i thi\u1ebft l\u1eadp c\u00e1c c\u01a1 ch\u1ebf gi\u00e1m s\u00e1t hi\u1ec7u qu\u1ea3 \u0111\u1ec3 k\u1ecbp th\u1eddi gia h\u1ea1n v\u00e0 thay th\u1ebf ch\u1ee9ng ch\u1ec9 tr\u01b0\u1edbc khi n\u00f3 h\u1ebft h\u1ea1n, nh\u1eb1m tr\u00e1nh t\u00ecnh tr\u1ea1ng trang web b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a trang web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00f3m l\u1ea1i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SSL ch\u1ee9ng ch\u1ec9 l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho vi\u1ec7c truy\u1ec1n th\u00f4ng tr\u00ean m\u1ea1ng. T\u1eeb vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean l\u00fd m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng v\u00e0 \u0111\u1ed1i x\u1ee9ng \u0111\u1eb1ng sau n\u00f3, \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 DV, OV ho\u1eb7c EV ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh, cho \u0111\u1ebfn vi\u1ec7c th\u1ef1c hi\u1ec7n \u0111\u00fang quy tr\u00ecnh n\u1ed9p \u0111\u01a1n, x\u00e1c th\u1ef1c v\u00e0 tri\u1ec3n khai, m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 an to\u00e0n cu\u1ed1i c\u00f9ng. C\u00e1c c\u1ea5u h\u00ecnh n\u00e2ng cao sau khi tri\u1ec3n khai, nh\u01b0 k\u00edch ho\u1ea1t HSTS, t\u1ed1i \u01b0u h\u00f3a b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a v\u00e0 thi\u1ebft l\u1eadp c\u01a1 ch\u1ebf c\u1eadp nh\u1eadt ch\u1ee9ng ch\u1ec9, ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t gi\u00fap n\u00e2ng m\u1ee9c \u0111\u1ed9 an to\u00e0n t\u1eeb \u201cc\u00f3\u201d l\u00ean \u201ct\u1ed1t\u201d. Trong b\u1ed1i c\u1ea3nh c\u00e1c m\u1ed1i \u0111e d\u1ecda an ninh m\u1ea1ng ng\u00e0y c\u00e0ng ph\u1ee9c t\u1ea1p, vi\u1ec7c hi\u1ec3u s\u00e2u v\u00e0 tri\u1ec3n khai \u0111\u00fang c\u00e1ch c\u00e1c c\u00f4ng ngh\u1ec7 SSL\/TLS l\u00e0 k\u1ef9 n\u0103ng c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi m\u1ecdi qu\u1ea3n tr\u1ecb vi\u00ean v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n trang web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">SSL Certificate l\u00e0 g\u00ec, n\u00f3 c\u00f3 t\u00e1c d\u1ee5ng g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SSL Certificate l\u00e0 m\u1ed9t ch\u1ee9ng ch\u1ec9 k\u1ef9 thu\u1eadt s\u1ed1, \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean m\u00e1y ch\u1ee7 web, d\u00f9ng \u0111\u1ec3 thi\u1ebft l\u1eadp li\u00ean k\u1ebft m\u00e3 h\u00f3a gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 m\u00e1y kh\u00e1ch (nh\u01b0 tr\u00ecnh duy\u1ec7t). T\u00e1c d\u1ee5ng c\u1ed1t l\u00f5i c\u1ee7a n\u00f3 c\u00f3 ba \u0111i\u1ec3m: m\u1ed9t l\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i, ng\u0103n ch\u1eb7n th\u00f4ng tin b\u1ecb nghe tr\u1ed9m; hai l\u00e0 x\u00e1c th\u1ef1c danh t\u00ednh website, ng\u0103n ch\u1eb7n ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o website gi\u1ea3 m\u1ea1o; ba l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb gi\u1ea3 m\u1ea1o trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa HTTP v\u00e0 HTTPS l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">HTTP (Hypertext Transfer Protocol) l\u00e0 giao th\u1ee9c truy\u1ec1n t\u1ea3i si\u00eau v\u0103n b\u1ea3n, trong \u0111\u00f3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n kh\u00f4ng m\u00e3 h\u00f3a, d\u1ec5 b\u1ecb c\u00e1c b\u00ean th\u1ee9 ba ch\u1eb7n \u0111o\u1ea1n v\u00e0 theo d\u00f5i. HTTPS l\u00e0 phi\u00ean b\u1ea3n c\u1ea3i ti\u1ebfn c\u1ee7a HTTP, b\u1ed5 sung th\u00eam l\u1edbp m\u00e3 h\u00f3a SSL\/TLS; d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua HTTPS \u1edf d\u1ea1ng m\u00e3 h\u00f3a, gi\u00fap b\u1ea3o v\u1ec7 t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a th\u00f4ng tin, x\u00e1c th\u1ef1c danh t\u00ednh ng\u01b0\u1eddi d\u00f9ng v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u. Ngo\u00e0i ra, vi\u1ec7c s\u1eed d\u1ee5ng HTTPS c\u0169ng l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 t\u00edch c\u1ef1c trong qu\u00e1 tr\u00ecnh x\u1ebfp h\u1ea1ng trang web b\u1edfi c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed v\u00e0 ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u514d\u8d39\u8bc1\u4e66\uff08\u5982Let\u2018s Encrypt\u7b7e\u53d1\u7684\uff09\u901a\u5e38\u662f\u57df\u540d\u9a8c\u8bc1\u578b\u8bc1\u4e66\uff0c\u80fd\u63d0\u4f9b\u4e0e\u4ed8\u8d39DV\u8bc1\u4e66\u76f8\u540c\u5f3a\u5ea6\u7684\u52a0\u5bc6\u529f\u80fd\uff0c\u9002\u5408\u4e2a\u4eba\u535a\u5ba2\u6216\u5c0f\u578b\u9879\u76ee\u3002\u4ed8\u8d39\u8bc1\u4e66\u7684\u4e3b\u8981\u4f18\u52bf\u5728\u4e8e\uff1a\u63d0\u4f9b\u7ec4\u7ec7\u9a8c\u8bc1\u6216\u6269\u5c55\u9a8c\u8bc1\uff0c\u5728\u6d4f\u89c8\u5668\u4e2d\u663e\u793a\u66f4\u660e\u663e\u7684\u4fe1\u4efb\u6807\u8bc6\uff08\u5982\u7eff\u8272\u5730\u5740\u680f\uff09\uff1b\u901a\u5e38\u5305\u542b\u66f4\u9ad8\u7684\u8d54\u4ed8\u4fdd\u969c\uff1b\u63d0\u4f9b\u66f4\u4e13\u4e1a\u7684\u6280\u672f\u652f\u6301\u670d\u52a1\uff1b\u4ee5\u53ca\u4e00\u4e9b\u9ad8\u7ea7\u529f\u80fd\u652f\u6301\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vi\u1ec7c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 website kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c k\u00edch ho\u1ea1t HTTPS s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c thao t\u00e1c giao ti\u1ebfp (handshake) v\u00e0 c\u00e1c ph\u00e9p m\u00e3 h\u00f3a\/d\u1ecbch m\u00e3 d\u1eef li\u1ec7u theo chu\u1ea9n TLS, v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft s\u1ebd l\u00e0m t\u0103ng m\u1ed9t ch\u00fat t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd. Tuy nhi\u00ean, v\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a ph\u1ea7n c\u1ee9ng hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00e1c giao th\u1ee9c \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a (ch\u1eb3ng h\u1ea1n nh\u01b0 TLS 1.3 \u2013 gi\u00fap qu\u00e1 tr\u00ecnh handshake di\u1ec5n ra nhanh h\u01a1n), t\u00e1c \u0111\u1ed9ng n\u00e0y g\u1ea7n nh\u01b0 kh\u00f4ng \u0111\u00e1ng k\u1ec3 v\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 kh\u00f4i ph\u1ee5c th\u00f4ng tin phi\u00ean (session recovery), t\u1ed1i \u01b0u h\u00f3a b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a (encryption suite), ho\u1eb7c s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 CDN (Content Delivery Network), s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 hi\u1ec7u n\u0103ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n. So v\u1edbi nh\u1eefng l\u1ee3i \u00edch an ninh to l\u1edbn m\u00e0 HTTPS mang l\u1ea1i, m\u1ee9c t\u0103ng t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd n\u00e0y<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft ch\u1ee9ng ch\u1ec9 SSL c\u1ee7a m\u1ed9t trang web c\u00f3 an to\u00e0n v\u00e0 h\u1ee3p l\u1ec7 hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 xem chi ti\u1ebft ch\u1ee9ng ch\u1ec9 b\u1eb1ng c\u00e1ch nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a \u1edf thanh \u0111\u1ecba ch\u1ec9 tr\u00ecnh duy\u1ec7t. M\u1ed9t ch\u1ee9ng ch\u1ec9 an to\u00e0n s\u1ebd hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o \u201cK\u1ebft n\u1ed1i l\u00e0 an to\u00e0n\u201d; ch\u1ee9ng ch\u1ec9 \u0111\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c c\u1ea5p cho t\u00ean mi\u1ec1n \u0111ang \u0111\u01b0\u1ee3c truy c\u1eadp, v\u00e0 t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 ph\u1ea3i \u0111\u00e1ng tin c\u1eady; th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c c\u1ee7a ch\u1ee9ng ch\u1ec9 c\u0169ng ph\u1ea3i c\u00f2n trong v\u00f2ng hi\u1ec7n t\u1ea1i. N\u1ebfu bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a hi\u1ec3n th\u1ecb m\u00e0u \u0111\u1ecf, m\u00e0u v\u00e0ng (v\u1edbi th\u00f4ng b\u00e1o c\u1ea3nh b\u00e1o) ho\u1eb7c k\u00e8m theo d\u1ea5u ch\u1ea5m than, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 k\u1ebft n\u1ed1i kh\u00f4ng an to\u00e0n ho\u1eb7c c\u00f3 v\u1ea5n \u0111\u1ec1 v\u1edbi ch\u1ee9ng ch\u1ec9.<\/p>","protected":false},"excerpt":{"rendered":"<p>SSL ch\u1ee9ng ch\u1ec9 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u qua giao th\u1ee9c HTTPS v\u00e0 b\u1ea3o v\u1ec7 an to\u00e0n qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u tr\u00ean c\u00e1c trang web. B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch chi ti\u1ebft c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao th\u1ee9c SSL\/TLS, c\u00e1ch k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng v\u00e0 \u0111\u1ed1i x\u1ee9ng, \u0111\u1ed3ng th\u1eddi so s\u00e1nh c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 kh\u00e1c nhau v\u1edbi m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c kh\u00e1c nhau nh\u01b0 DV, OV, EV. Cu\u1ed1i c\u00f9ng, b\u00e0i vi\u1ebft cung c\u1ea5p m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 c\u00e1c b\u01b0\u1edbc c\u1ea7n th\u1ef1c hi\u1ec7n t\u1eeb vi\u1ec7c n\u1ed9p \u0111\u01a1n xin c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL cho \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai ch\u00fang tr\u00ean m\u00e1y ch\u1ee7 web, t\u1ea1o th\u00e0nh m\u1ed9t h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 cho vi\u1ec7c c\u1ea5u h\u00ecnh b\u1ea3o m\u1eadt cho trang web.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[341,11,339,327,338],"knowledge_category":[277],"class_list":["post-12376360","knowledge_post","type-knowledge_post","status-publish","hentry","tag-https-encryption","tag-ssl-certificate","tag-tls-protocol","tag-digital-certificate","tag-cybersecurity","knowledge_category-ssl-certificate"],"acf":{"site_seo_keywords":"SSL\u8bc1\u4e66,HTTPS\u52a0\u5bc6,TLS\u63e1\u624b,\u8bc1\u4e66\u7c7b\u578b,\u90e8\u7f72\u6307\u5357,\u901a\u914d\u7b26\u8bc1\u4e66,SSL\u8bc1\u4e66\u7533\u8bf7,SSL\u8bc1\u4e66\u539f\u7406"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12376360","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\/12376360\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12376360"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12376360"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12376360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}