{"id":12378820,"date":"2026-03-20T03:44:12","date_gmt":"2026-03-19T19:44:12","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/ssl%e8%af%81%e4%b9%a6%e7%bb%88%e6%9e%81%e6%8c%87%e5%8d%97%ef%bc%9a%e4%bb%8e%e7%b1%bb%e5%9e%8b%e9%80%89%e6%8b%a9%e5%88%b0%e5%ae%89%e8%a3%85%e9%83%a8%e7%bd%b2%e5%85%a8%e8%a7%a3%e6%9e%90\/"},"modified":"2026-03-20T03:47:38","modified_gmt":"2026-03-19T19:47:38","slug":"ssl-certificate-guide-types-installation-deployment-2026","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-guide-types-installation-deployment-2026\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: Ph\u00e2n t\u00edch chi ti\u1ebft t\u1eeb l\u1ef1a ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 \u0111\u1ebfn tri\u1ec3n khai c\u00e0i \u0111\u1eb7t"},"content":{"rendered":"<h2 class=\"wp-block-heading\">SSL ch\u1ee9ng ch\u1ec9 l\u00e0 g\u00ec v\u00e0 vai tr\u00f2 c\u1ed1t l\u00f5i c\u1ee7a n\u00f3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SSL ch\u1ee9ng ch\u1ec9, c\u00f3 t\u00ean \u0111\u1ea7y \u0111\u1ee7 l\u00e0 Secure Sockets Layer Certificate, hi\u1ec7n nay \u0111\u00e3 tr\u1edf th\u00e0nh thu\u1eadt ng\u1eef d\u00f9ng \u0111\u1ec3 ch\u1ec9 ch\u1ee9ng ch\u1ec9 TLS \u2013 ng\u01b0\u1eddi k\u1ebf nhi\u1ec7m c\u1ee7a n\u00f3. \u0110\u00e2y l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 s\u1ed1 h\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00ednh an to\u00e0n cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean m\u1ea1ng b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 m\u00e1y kh\u00e1ch (ch\u1eb3ng h\u1ea1n nh\u01b0 tr\u00ecnh duy\u1ec7t). Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SSL d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng. Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o m\u1ed9t trang web \u0111\u00e3 c\u00e0i \u0111\u1eb7t SSL ch\u1ee9ng ch\u1ec9, tr\u00ecnh duy\u1ec7t s\u1ebd g\u1eedi y\u00eau c\u1ea7u \u201cgiao ti\u1ebfp\u201d (handshake) \u0111\u1ebfn m\u00e1y ch\u1ee7; m\u00e1y ch\u1ee7 sau \u0111\u00f3 s\u1ebd g\u1eedi kh\u00f3a c\u00f4ng khai c\u1ee7a m\u00ecnh cho tr\u00ecnh duy\u1ec7t. Sau \u0111\u00f3, c\u1ea3 hai b\u00ean s\u1ebd th\u1ecfa thu\u1eadn v\u00e0 t\u1ea1o ra m\u1ed9t \u201ckh\u00f3a phi\u00ean\u201d (session key) duy nh\u1ea5t, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 to\u00e0n b\u1ed9 d\u1eef li\u1ec7u trong phi\u00ean truy c\u1eadp \u0111\u00f3, nh\u1eb1m ng\u0103n ch\u1eb7n vi\u1ec7c th\u00f4ng tin b\u1ecb \u0111\u00e1nh c\u1eafp ho\u1eb7c s\u1eeda \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vai tr\u00f2 c\u1ed1t l\u00f5i c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua ba kh\u00eda c\u1ea1nh ch\u00ednh. Th\u1ee9 nh\u1ea5t l\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u \u2013 \u0111\u00e2y l\u00e0 ch\u1ee9c n\u0103ng c\u01a1 b\u1ea3n v\u00e0 quan tr\u1ecdng nh\u1ea5t c\u1ee7a n\u00f3, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 th\u00f4ng tin c\u00e1 nh\u00e2n, th\u00f4ng tin \u0111\u0103ng nh\u1eadp, chi ti\u1ebft thanh to\u00e1n \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i d\u01b0\u1edbi d\u1ea1ng m\u00e3 h\u00f3a; ngay c\u1ea3 khi b\u1ecb ch\u1eb7n, ch\u00fang c\u0169ng kh\u00f4ng th\u1ec3 b\u1ecb gi\u1ea3i m\u00e3. Th\u1ee9 hai l\u00e0 x\u00e1c th\u1ef1c danh t\u00ednh: Ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi c\u00e1c t\u1ed5 ch\u1ee9c th\u1ee9 ba \u0111\u00e1ng tin c\u1eady, v\u00e0 tr\u00ecnh duy\u1ec7t s\u1ebd ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a ch\u1ee9ng ch\u1ec9 c\u0169ng nh\u01b0 m\u1ee9c \u0111\u1ed9 uy t\u00edn c\u1ee7a t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9, gi\u00fap ng\u01b0\u1eddi d\u00f9ng x\u00e1c \u0111\u1ecbnh r\u1eb1ng trang web h\u1ecd \u0111ang truy c\u1eadp l\u00e0 h\u1ee3p ph\u00e1p v\u00e0 kh\u00f4ng ph\u1ea3i l\u00e0 trang web l\u1eeba \u0111\u1ea3o. Th\u1ee9 ba l\u00e0 x\u00e2y d\u1ef1ng l\u00f2ng tin v\u00e0 n\u00e2ng cao th\u1ee9 h\u1ea1ng tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (SEO): Tr\u00ecnh duy\u1ec7t s\u1ebd hi\u1ec3n th\u1ecb bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a an to\u00e0n cho c\u00e1c trang web s\u1eed d\u1ee5ng giao th\u1ee9c HTTPS, t\u1eeb \u0111\u00f3 t\u0103ng \u0111\u00e1ng k\u1ec3 m\u1ee9c \u0111\u1ed9 tin c\u1eady c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110\u1ed3ng th\u1eddi, c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm h\u00e0ng \u0111\u1ea7u nh\u01b0 Google coi vi\u1ec7c s\u1eed d\u1ee5ng HTTPS l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 t\u00edch c\u1ef1c trong vi\u1ec7c x\u1ebfp h\u1ea1ng k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm; do \u0111\u00f3, vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL gi\u00fap n\u00e2ng cao t\u00ednh hi\u1ec3n th\u1ecb c\u1ee7a trang web trong k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL ch\u00ednh v\u00e0 t\u00ecnh hu\u1ed1ng \u00e1p d\u1ee5ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a c\u00e1c ch\u1ee9ng ch\u1ec9 SSL tr\u00ean th\u1ecb tr\u01b0\u1eddng, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i ch\u00ednh th\u00e0nh c\u00e1c nh\u00f3m sau d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c v\u00e0 ph\u1ea1m vi b\u1ea3o v\u1ec7 m\u00e0 ch\u00fang cung c\u1ea5p.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/es\/knowledge\/ssl-certificate\/ssl-certificate-guide-types-uses-application-installation\/\">Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: Ph\u00e2n lo\u1ea1i, ch\u1ee9c n\u0103ng, quy tr\u00ecnh \u0111\u0103ng k\u00fd v\u00e0 h\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DV (Domain Validation) ch\u1ee9ng ch\u1ec9 l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 c\u00f3 m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c th\u1ea5p nh\u1ea5t nh\u01b0ng t\u1ed1c \u0111\u1ed9 c\u1ea5p ph\u00e1t nhanh 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 vi\u1ec7c x\u00e1c minh \u0111\u1ecba ch\u1ec9 email \u0111\u00e3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n ho\u1eb7c thi\u1ebft l\u1eadp c\u00e1c b\u1ea3n ghi DNS c\u1ee5 th\u1ec3. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng h\u00f3a, v\u00e0 ch\u1ee9ng ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c.<br \/>\nCh\u1ee9ng ch\u1ec9 DV r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c trang web c\u00e1 nh\u00e2n, blog, m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m, ho\u1eb7c c\u00e1c trang web nh\u1ecf kh\u00f4ng y\u00eau c\u1ea7u x\u00e1c th\u1ef1c danh t\u00ednh ch\u1eb7t ch\u1ebd. \u01afu \u0111i\u1ec3m c\u1ee7a n\u00f3 l\u00e0 chi ph\u00ed th\u1ea5p v\u00e0 qu\u00e1 tr\u00ecnh tri\u1ec3n khai nhanh ch\u00f3ng; tuy nhi\u00ean, ch\u1ee9ng ch\u1ec9 n\u00e0y ch\u1ec9 cung c\u1ea5p c\u00e1c ch\u1ee9c n\u0103ng m\u00e3 h\u00f3a c\u01a1 b\u1ea3n v\u00e0 kh\u00f4ng cho ph\u00e9p hi\u1ec3n th\u1ecb th\u00f4ng tin doanh nghi\u1ec7p trong c\u00e1c chi ti\u1ebft c\u1ee7a ch\u1ee9ng ch\u1ec9.<\/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\">Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">OV ch\u1ee9ng ch\u1ec9 cung c\u1ea5p m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c danh t\u00ednh cao h\u01a1n so v\u1edbi DV ch\u1ee9ng ch\u1ec9. Ngo\u00e0i vi\u1ec7c x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n, t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA) c\u00f2n ti\u1ebfn h\u00e0nh ki\u1ec3m tra th\u1ee7 c\u00f4ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ednh h\u1ee3p ph\u00e1p th\u1ef1c s\u1ef1 c\u1ee7a t\u1ed5 ch\u1ee9c n\u1ed9p \u0111\u01a1n, ch\u1eb3ng h\u1ea1n b\u1eb1ng c\u00e1ch ki\u1ec3m tra th\u00f4ng tin \u0111\u0103ng k\u00fd c\u1ee7a h\u1ecd t\u1ea1i c\u00e1c c\u01a1 quan ch\u00ednh ph\u1ee7. Do \u0111\u00f3, th\u1eddi gian c\u1ea5p OV ch\u1ee9ng ch\u1ec9 th\u01b0\u1eddng m\u1ea5t v\u00e0i ng\u00e0y l\u00e0m vi\u1ec7c.<br \/>\nCh\u1ee9ng ch\u1ec9 OV (Organizational Validation) ph\u00f9 h\u1ee3p v\u1edbi trang web ch\u00ednh th\u1ee9c c\u1ee7a c\u00e1c doanh nghi\u1ec7p, t\u1ed5 ch\u1ee9c, v\u00e0 nh\u1eefng trang web c\u1ea7n th\u1ec3 hi\u1ec7n danh t\u00ednh ph\u00e1p l\u00fd c\u1ee7a m\u00ecnh. Khi ng\u01b0\u1eddi d\u00f9ng nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a \u1edf thanh \u0111\u1ecba ch\u1ec9 tr\u00ecnh duy\u1ec7t, h\u1ecd c\u00f3 th\u1ec3 xem \u0111\u01b0\u1ee3c t\u00ean c\u1ee7a doanh nghi\u1ec7p \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn, \u0111i\u1ec1u n\u00e0y gi\u00fap t\u0103ng \u0111\u00e1ng k\u1ec3 m\u1ee9c \u0111\u1ed9 tin c\u1eady c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c trang web th\u01b0\u01a1ng m\u1ea1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c m\u1edf r\u1ed9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">EV (Extended Validation) ch\u1ee9ng ch\u1ec9 l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL c\u00f3 m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c ch\u1eb7t ch\u1ebd v\u00e0 an to\u00e0n cao nh\u1ea5t hi\u1ec7n nay. C\u00e1c t\u1ed5 ch\u1ee9c cung c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL (CA \u2013 Certificate Authorities) s\u1ebd ti\u1ebfn h\u00e0nh ki\u1ec3m tra danh t\u00ednh \u0111\u1ed1i v\u1edbi t\u1ed5 ch\u1ee9c n\u1ed9p \u0111\u01a1n m\u1ed9t c\u00e1ch k\u1ef9 l\u01b0\u1ee1ng v\u00e0 nghi\u00eam ng\u1eb7t, bao g\u1ed3m nhi\u1ec1u kh\u00eda c\u1ea1nh li\u00ean quan \u0111\u1ebfn ph\u00e1p l\u00fd, c\u01a1 s\u1edf v\u1eadt ch\u1ea5t v\u00e0 ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a t\u1ed5 ch\u1ee9c \u0111\u00f3. Nh\u1eefng trang web s\u1eed d\u1ee5ng EV ch\u1ee9ng ch\u1ec9 s\u1ebd c\u00f3 \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng m\u00e0u xanh l\u00e1 c\u00e2y n\u1ed5i b\u1eadt trong h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 bi\u1ebfn, k\u00e8m theo t\u00ean c\u00f4ng ty \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u1ef1c ti\u1ebf<br \/>\nCh\u1ee9ng ch\u1ec9 EV (Electric Vehicle Certificate) l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho c\u00e1c doanh nghi\u1ec7p l\u1edbn, t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh, n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, v\u00e0 nh\u1eefng t\u1ed5 ch\u1ee9c kh\u00e1c c\u1ea7n x\u1eed l\u00fd c\u00e1c giao d\u1ecbch c\u00f3 m\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ea3m cao ho\u1eb7c \u0111\u1eb7c bi\u1ec7t coi tr\u1ecdng uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u. Ch\u1ee9ng ch\u1ec9 n\u00e0y cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c danh t\u00ednh cao nh\u1ea5t, v\u00e0 \u0111\u01b0\u1ee3c coi l\u00e0 c\u00f4ng c\u1ee5 quan tr\u1ecdng \u0111\u1ec3 x\u00e2y d\u1ef1ng ni\u1ec1<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n v\u00e0 ch\u1ee9ng ch\u1ec9 \u0111a t\u00ean mi\u1ec1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i vi\u1ec7c ph\u00e2n lo\u1ea1i theo m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c, c\u00f2n c\u00f3 c\u00e1ch ph\u00e2n lo\u1ea1i ch\u1ee9ng ch\u1ec9 d\u1ef1a tr\u00ean ph\u1ea1m vi ch\u1ee9c n\u0103ng m\u00e0 ch\u00fang h\u1ed7 tr\u1ee3. C\u00e1c ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (wildcard) cho ph\u00e9p s\u1eed d\u1ee5ng m\u1ed9t ch\u1ee9ng ch\u1ec9 \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh c\u00f9ng t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n con c\u00f9ng c\u1ea5p d\u01b0\u1edbi n\u00f3. V\u00ed d\u1ee5, m\u1ed9t ch\u1ee9ng ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ed3 <code data-no-auto-translation=\"\">example.com<\/code>\u3001<code data-no-auto-translation=\"\">blog.example.com<\/code>\u3001<code data-no-auto-translation=\"\">shop.example.com<\/code> V.v. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a \u0111\u00e1ng k\u1ec3 vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c ch\u1ee9ng ch\u1ec9 c\u00f3 s\u1ed1 l\u01b0\u1ee3ng l\u1edbn t\u00ean mi\u1ec1n con.<br \/>\nGi\u1ea5y t\u1edd ch\u1ee9ng nh\u1eadn \u0111a t\u00ean mi\u1ec1n (multi-domain certificate) cho ph\u00e9p b\u1ea1n th\u00eam nhi\u1ec1u t\u00ean mi\u1ec1n ho\u00e0n to\u00e0n kh\u00e1c nhau v\u00e0o c\u00f9ng m\u1ed9t gi\u1ea5y t\u1edd ch\u1ee9ng nh\u1eadn. V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t gi\u1ea5y t\u1edd ch\u1ee9ng nh\u1eadn \u0111\u1ec3 b\u1ea3o v\u1ec7 nhi\u1ec1u trang web c\u00f9ng l\u00fac. <code data-no-auto-translation=\"\">domain1.com<\/code>\u3001<code data-no-auto-translation=\"\">domain2.net<\/code> \u548c <code data-no-auto-translation=\"\">domain3.org<\/code>Lo\u1ea1i ch\u1ee9ng ch\u1ec9 n\u00e0y cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p linh ho\u1ea1t v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed cho c\u00e1c doanh nghi\u1ec7p qu\u1ea3n l\u00fd nhi\u1ec1u t\u00ean mi\u1ec1n kh\u00e1c nhau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch th\u1ee9c \u0111\u0103ng k\u00fd v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u0111\u0103ng k\u00fd v\u00e0 tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh c\u00f3 h\u1ec7 th\u1ed1ng; tu\u00e2n theo c\u00e1c b\u01b0\u1edbc \u0111\u00fang \u0111\u1eafn s\u1ebd \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 di\u1ec5n ra thu\u1eadn l\u1ee3i.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/es\/knowledge\/ssl-certificate\/data-security-user-privacy-ssl-certificate-website-operations\/\">Trong m\u00f4i tr\u01b0\u1eddng internet ng\u00e0y nay, b\u1ea3o m\u1eadt d\u1eef li\u1ec7u v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 tr\u1edf th\u00e0nh<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 mua ch\u1ee9ng ch\u1ec9 ph\u00f9 h\u1ee3p t\u1eeb m\u1ed9t t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (Certificate Authority \u2013 CA) \u0111\u00e1ng tin c\u1eady. Khi l\u1ef1a ch\u1ecdn CA, b\u1ea1n n\u00ean xem x\u00e9t \u0111\u1ebfn uy t\u00edn c\u1ee7a h\u1ecd tr\u00ean th\u1ecb tr\u01b0\u1eddng, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t, v\u00e0 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng. Sau \u0111\u00f3, b\u1ea1n c\u1ea7n t\u1ea1o y\u00eau c\u1ea7u k\u00fd ch\u1ee9ng ch\u1ec9 (Certificate Signing Request \u2013 CSR) tr\u00ean m\u00e1y ch\u1ee7. CSR 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 v\u00e0 th\u00f4ng tin v\u1ec1 t\u1ed5 ch\u1ee9c c\u1ee7a b\u1ea1n; \u0111\u00e2y l\u00e0 t\u1ec7p c\u1ed1t l\u00f5i \u0111\u1ec3 y\u00eau c\u1ea7u CA c\u1ea5p ch\u1ee9ng ch\u1ec9. Khi t\u1ea1o CSR, h\u1ec7 th\u1ed1ng c\u0169ng s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u1ea1o ra m\u1ed9t kh\u00f3a ri\u00eang t\u01b0, v\u00e0 kh\u00f3a n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 b\u00ed m\u1eadt tr\u00ean m\u00e1y ch\u1ee7, tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc th\u1ee9 hai l\u00e0 n\u1ed9p \u0111\u01a1n y\u00eau c\u1ea7u c\u1ea5p ch\u1ee9ng ch\u1ec9 (CSR \u2013 Certificate Signing Request) v\u00e0 ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c. H\u00e3y n\u1ed9p \u0111\u01a1n CSR \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ra cho t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority) m\u00e0 b\u1ea1n \u0111\u00e3 ch\u1ecdn, v\u00e0 th\u1ef1c hi\u1ec7n theo quy tr\u00ecnh x\u00e1c th\u1ef1c t\u01b0\u01a1ng \u1ee9ng t\u00f9y theo lo\u1ea1i ch\u1ee9ng ch\u1ec9 m\u00e0 b\u1ea1n mua. \u0110\u1ed1i v\u1edbi ch\u1ee9ng ch\u1ec9 DV (Domain Validation), qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c th\u01b0\u1eddng di\u1ec5n ra t\u1ef1 \u0111\u1ed9ng; c\u00f2n \u0111\u1ed1i v\u1edbi ch\u1ee9ng ch\u1ec9 OV\/EV (Organization Validation\/Extended Validation), b\u1ea1n c\u1ea7n n\u1ed9p c\u00e1c t\u00e0i li\u1ec7u nh\u01b0 gi\u1ea5y ph\u00e9p kinh doanh \u0111\u1ec3 CA ti\u1ebfn h\u00e0nh xem x\u00e9t th\u1ee7 c\u00f4ng. Sau khi CA x\u00e1c nh\u1eadn \u0111\u01a1n \u0111\u0103ng k\u00fd, h\u1ecd s\u1ebd g\u1eedi cho b\u1ea1n t\u1ec7p ch\u1ee9ng ch\u1ec9 SSL \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p, bao g\u1ed3m ch\u00ednh t\u1ec7p ch\u1ee9ng ch\u1ec9 v\u00e0 chu\u1ed7i ch\u1ee9ng ch\u1ec9 trung gian (n\u1ebfu c\u00f3).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc th\u1ee9 ba l\u00e0 c\u00e0i \u0111\u1eb7t v\u00e0 tri\u1ec3n khai c\u00e1c ch\u1ee9ng ch\u1ec9. H\u00e3y c\u00e0i \u0111\u1eb7t t\u1ec7p ch\u1ee9ng ch\u1ec9 \u0111\u00e3 nh\u1eadn \u0111\u01b0\u1ee3c c\u00f9ng v\u1edbi chu\u1ed7i ch\u1ee9ng ch\u1ec9 trung gian l\u00ean m\u00e1y ch\u1ee7 Web c\u1ee7a b\u1ea1n. Quy tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo ph\u1ea7n m\u1ec1m m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng; c\u00e1c ph\u1ea7n m\u1ec1m ph\u1ed5 bi\u1ebfn nh\u01b0 Apache, Nginx, IIS \u0111\u1ec1u c\u00f3 c\u00e1c t\u1ec7p c\u1ea5u h\u00ecnh ri\u00eang c\u1ea7n \u0111\u01b0\u1ee3c ch\u1ec9nh s\u1eeda. Sau khi c\u00e0i \u0111\u1eb7t xong, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n vi\u1ec7c c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u1ec3 y\u00eau c\u1ea7u t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u truy c\u1eadp qua HTTP \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng t\u1ef1 \u0111\u1ed9ng sang HTTPS, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng lu\u00f4n s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i an to\u00e0n.<\/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\">B\u01b0\u1edbc cu\u1ed1i c\u00f9ng v\u00e0 r\u1ea5t quan tr\u1ecdng l\u00e0 vi\u1ec7c x\u00e1c th\u1ef1c (validation) v\u00e0 ki\u1ec3m th\u1eed (testing). Sau khi qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t ho\u00e0n t\u1ea5t, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn ho\u1eb7c c\u00f4ng c\u1ee5 ph\u00e1t tri\u1ec3n (developer tools) c\u1ee7a tr\u00ecnh duy\u1ec7t \u0111\u1ec3 ki\u1ec3m tra xem ch\u1ee9ng ch\u1ec9 (certificate) \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t \u0111\u00fang c\u00e1ch ch\u01b0a, li\u1ec7u n\u00f3 c\u00f3 \u0111\u01b0\u1ee3c tin c\u1eady hay kh\u00f4ng, v\u00e0 li\u1ec7u b\u1ed9 c\u00f4ng c\u1ee5 m\u00e3 h\u00f3a (encryption suite) c\u00f3 an to\u00e0n hay kh\u00f4ng. \u0110\u1ed3ng th\u1eddi, h\u00e3y ki\u1ec3m th\u1eed to\u00e0n di\u1ec7n t\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a trang web \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00e0i nguy\u00ean tr\u00ean trang \u0111\u01b0\u1ee3c t\u1ea3i \u0111\u00fang c\u00e1ch trong m\u00f4i tr\u01b0\u1eddng HTTPS v\u00e0 c\u00e1c li\u00ean k\u1ebft (links) ho\u1ea1t \u0111\u1ed9ng<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u1ea3n l\u00fd ch\u1ee9ng ch\u1ec9 SSL v\u00e0 c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t l\u1ea7n duy nh\u1ea5t l\u00e0 \u0111\u1ee7; vi\u1ec7c qu\u1ea3n l\u00fd ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 duy tr\u00ec an ninh l\u00e2u d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u1ea3n l\u00fd th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c c\u1ee7a c\u00e1c ch\u1ee9ng ch\u1ec9 l\u00e0 \u0111i\u1ec1u v\u00f4 c\u00f9ng quan tr\u1ecdng. K\u1ec3 t\u1eeb n\u0103m 2020, th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c t\u1ed1i \u0111a c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9ng ch\u1ec9 SSL \u0111\u01b0\u1ee3c tin c\u1eady c\u00f4ng khai \u0111\u00e3 \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn xu\u1ed1ng c\u00f2n 13 th\u00e1ng, \u0111i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean ph\u1ea3i theo d\u00f5i th\u01b0\u1eddng xuy\u00ean h\u01a1n th\u1eddi \u0111i\u1ec3m ch\u00fang h\u1ebft h\u1ea1n. \u0110\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb n\u00ean thi\u1ebft l\u1eadp c\u00e1c th\u00f4ng b\u00e1o nh\u1eafc nh\u1edf v\u1ec1 vi\u1ec7c gia h\u1ea1n ch\u1ee9ng ch\u1ec9 \u00edt nh\u1ea5t 30 ng\u00e0y tr\u01b0\u1edbc th\u1eddi \u0111i\u1ec3m h\u1ebft h\u1ea1n, \u0111\u1ed3ng th\u1eddi tri\u1ec3n khai quy tr\u00ecnh gia h\u1ea1n t\u1ef1 \u0111\u1ed9ng. Nhi\u1ec1u t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA) v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u1ec1u cung c\u1ea5p d\u1ecbch v\u1ee5 gia h\u1ea1n t\u1ef1 \u0111\u1ed9ng, gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng d\u1ecbch v\u1ee5 trang web b\u1ecb gi\u00e1n \u0111o\u1ea1n ho\u1eb7c c\u00e1c c\u1ea3nh b\u00e1o<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/es\/knowledge\/ssl-certificate\/how-to-choose-and-install-ssl-certificate-guide-for-website-security-and-seo-ranking\/\">C\u00e1ch ch\u1ecdn v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL? H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 b\u1ea3o v\u1ec7 an to\u00e0n trang web v\u00e0 c\u1ea3i thi\u1ec7n th\u1ee9 h\u1ea1ng SEO<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, c\u1ea7n b\u1eadt ch\u1ee9c n\u0103ng b\u1ea3o m\u1eadt truy\u1ec1n d\u1eef li\u1ec7u HTTP nghi\u00eam ng\u1eb7t (HTTP Strict Transport Security \u2013 HSTS). HSTS l\u00e0 m\u1ed9t c\u01a1 ch\u1ebf ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt web, bu\u1ed9c tr\u00ecnh duy\u1ec7t ch\u1ec9 giao ti\u1ebfp v\u1edbi trang web th\u00f4ng qua giao th\u1ee9c HTTPS, t\u1eeb \u0111\u00f3 gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng nh\u1eb1m l\u1ea5y c\u1eafp th\u00f4ng tin \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng SSL. \u0110\u1ed3ng th\u1eddi, c\u1ea7n th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c giao th\u1ee9c c\u0169 kh\u00f4ng an to\u00e0n c\u0169ng nh\u01b0 c\u00e1c b\u1ed9 m\u00e3 h\u00f3a y\u1ebfu; \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u00e1y ch\u1ee7 ch\u1ec9 h\u1ed7 tr\u1ee3 c\u00e1c phi\u00ean b\u1ea3n giao th\u1ee9c TLS 1.2 tr\u1edf l\u00ean, v\u00e0 c\u1ea5u h\u00ecnh c\u00e1c b\u1ed9 m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t th\u1ef1c h\u00e0nh quan tr\u1ecdng kh\u00e1c l\u00e0 th\u1ef1c hi\u1ec7n ch\u00ednh s\u00e1ch minh b\u1ea1ch h\u00f3a c\u00e1c ch\u1ee9ng ch\u1ec9 (certificate transparency policy). CT (Certificate Transparency) l\u00e0 m\u1ed9t s\u00e1ng ki\u1ebfn trong ng\u00e0nh nh\u1eb1m gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m to\u00e1n qu\u00e1 tr\u00ecnh c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL. Ch\u00ednh s\u00e1ch n\u00e0y y\u00eau c\u1ea7u c\u00e1c t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authorities) ph\u1ea3i ghi l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9ng ch\u1ec9 \u0111\u00e3 c\u1ea5p v\u00e0o nh\u1eefng h\u1ec7 th\u1ed1ng nh\u1eadt k\u00fd c\u00f3 th\u1ec3 truy c\u1eadp c\u00f4ng khai, gi\u00fap ph\u00e1t hi\u1ec7n k\u1ecbp th\u1eddi c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u1ea5p ch\u1ee9ng ch\u1ec9 sai quy \u0111\u1ecbnh ho\u1eb7c ch\u1ee9ng ch\u1ec9 c\u00f3 m\u1ee5c \u0111\u00edch x\u1ea5u. Vi\u1ec7c \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ee9ng ch\u1ec9 c\u1ee7a b\u1ea1n tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a CT s\u1ebd gi\u00fap t\u0103ng m\u1ee9c \u0111\u1ed9 tin c\u1eady t\u1eeb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cu\u1ed1i c\u00f9ng, h\u00e3y x\u00e2y d\u1ef1ng m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n l\u00fd ch\u1ee9ng ch\u1ec9 bao ph\u1ee7 to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a ch\u00fang. Chi\u1ebfn l\u01b0\u1ee3c n\u00e0y bao g\u1ed3m vi\u1ec7c l\u1eadp danh s\u00e1ch t\u00e0i s\u1ea3n ch\u1ee9ng ch\u1ec9, x\u00e1c \u0111\u1ecbnh r\u00f5 tr\u00e1ch nhi\u1ec7m qu\u1ea3n l\u00fd, thi\u1ebft l\u1eadp quy tr\u00ecnh n\u1ed9p \u0111\u01a1n v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 m\u1ed9t c\u00e1ch ti\u00eau chu\u1ea9n h\u00f3a, c\u0169ng nh\u01b0 l\u1eadp k\u1ebf ho\u1ea1ch \u1ee9ng ph\u00f3 kh\u1ea9n c\u1ea5p \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi c\u00e1c s\u1ef1 c\u1ed1 b\u1ea3o m\u1eadt nh\u01b0 r\u00f2 r\u1ec9 kh\u00f3a ri\u00eang t\u01b0 ho\u1eb7c b\u1ecb thu h\u1ed3i ch\u1ee9ng ch\u1ec9. \u0110\u1ed1i v\u1edbi c\u00e1c t\u1ed5 ch\u1ee9c l\u1edbn s\u1edf h\u1eefu h\u00e0ng ch\u1ee5c ho\u1eb7c h\u00e0ng tr\u0103m ch\u1ee9ng ch\u1ec9, h\u00e3y c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng c\u00e1c n\u1ec1n t\u1ea3ng qu\u1ea3n l\u00fd ch\u1ee9ng ch\u1ec9 t\u1eadp trung nh\u1eb1m n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh b\u1ea3o m\u1eadt.<\/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 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t m\u00f4i tr\u01b0\u1eddng Internet an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady. N\u00f3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u, x\u00e1c th\u1ef1c t\u00ednh h\u1ee3p ph\u00e1p c\u1ee7a c\u00e1c trang web, v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng c\u0169ng nh\u01b0 th\u1ee9 h\u1ea1ng tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm th\u00f4ng qua ba ch\u1ee9c n\u0103ng ch\u00ednh: m\u00e3 h\u00f3a, x\u00e1c th\u1ef1c danh t\u00ednh v\u00e0 thi\u1ebft l\u1eadp l\u00f2ng tin. T\u1eeb nh\u1eefng ch\u1ee9ng ch\u1ec9 DV c\u01a1 b\u1ea3n \u0111\u1ebfn nh\u1eefng ch\u1ee9ng ch\u1ec9 EV c\u00f3 \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n, c\u00f9ng v\u1edbi c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (%s, %1$s, {{var}}) v\u00e0 h\u1ed7 tr\u1ee3 nhi\u1ec1u t\u00ean mi\u1ec1n, vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 ph\u00f9 h\u1ee3p l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau. Quy tr\u00ecnh n\u1ed9p \u0111\u01a1n, c\u00e0i \u0111\u1eb7t v\u00e0 x\u00e1c th\u1ef1c c\u1ea7n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t c\u00e1ch nghi\u00eam t\u00fac; trong khi \u0111\u00f3, vi\u1ec7c qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi ch\u1ee9ng ch\u1ec9 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 sau khi tri\u1ec3n khai, c\u00f9ng v\u1edbi vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c c\u1ea5u h\u00ecnh b\u1ea3o m\u1eadt v\u00e0 chi\u1ebfn l\u01b0\u1ee3c ph\u00f9 h\u1ee3p, l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh l\u00e2u d\u00e0i. L\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh trang web, vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 \u00e1p d\u1ee5ng \u0111\u00fang c\u00e1ch c\u00e1c ch\u1ee9ng ch\u1ec9 SSL kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 k\u1ef9 thu\u1eadt m\u00e0 c\u00f2n th\u1ec3 hi\u1ec7n th\u00e1i \u0111\u1ed9 c\u00f3<\/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 ch\u1ee9ng ch\u1ec9 v\u00e0 HTTPS c\u00f3 m\u1ed1i quan h\u1ec7 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SSL ch\u1ee9ng ch\u1ec9 l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 tri\u1ec3n khai giao th\u1ee9c HTTPS. HTTPS \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n t\u1ea3ng giao th\u1ee9c HTTP v\u00e0 b\u1ed5 sung th\u00eam l\u1edbp m\u00e3 h\u00f3a SSL\/TLS. Ch\u1ec9 khi m\u00e1y ch\u1ee7 web \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL h\u1ee3p l\u1ec7, k\u1ebft n\u1ed1i m\u00e3 h\u00f3a TLS m\u1edbi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp th\u00e0nh c\u00f4ng, gi\u00fap \u0111\u1ecba ch\u1ec9 trang web chuy\u1ec3n t\u1eeb HTTP sang HTTPS v\u00e0 \u0111\u1ea3m b\u1ea3o truy c\u1eadp an to\u00e0n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed v\u00e0 tr\u1ea3 ph\u00ed kh\u00e1c nhau th\u1ebf n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u514d\u8d39\u8bc1\u4e66\uff08\u5982Let\u2018s Encrypt\u9881\u53d1\uff09\u901a\u5e38\u662f\u57df\u540d\u9a8c\u8bc1\u578b\u8bc1\u4e66\uff0c\u80fd\u63d0\u4f9b\u57fa\u7840\u7684\u52a0\u5bc6\u529f\u80fd\u3002\u5176\u4e3b\u8981\u533a\u522b\u5728\u4e8e\uff0c\u514d\u8d39\u8bc1\u4e66\u6709\u6548\u671f\u8f83\u77ed\uff08\u901a\u5e3890\u5929\uff09\uff0c\u9700\u8981\u9891\u7e41\u7eed\u671f\uff1b\u4e00\u822c\u4e0d\u542b\u4fdd\u969c\u7528\u6237\u635f\u5931\u7684\u62c5\u4fdd\uff1b\u5e76\u4e14\u901a\u5e38\u53ea\u652f\u6301\u57fa\u7840\u7684\u6280\u672f\u652f\u6301\u3002<br \/>\nC\u00e1c ch\u1ee9ng ch\u1ec9 c\u00f3 ph\u00ed cung c\u1ea5p nhi\u1ec1u t\u00f9y ch\u1ecdn h\u01a1n, bao g\u1ed3m c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 y\u00eau c\u1ea7u x\u00e1c th\u1ef1c th\u1ee7 c\u00f4ng nh\u01b0 OV (Organized Validation) v\u00e0 EV (Extended Validation), mang l\u1ea1i m\u1ee9c \u0111\u1ed9 tin c\u1eady cao h\u01a1n v\u00e0 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng d\u00e0i h\u01a1n. Ch\u00fang th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m v\u1edbi m\u1ee9c \u0111\u1ed9 b\u1ed3i th\u01b0\u1eddng kh\u00e1c nhau, \u0111\u1ed3ng th\u1eddi ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u0169ng nh\u1eadn \u0111\u01b0\u1ee3c d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt chuy\u00ean nghi\u1ec7p v\u00e0 nhanh ch\u00f3ng h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o khi trang web truy c\u1eadp ch\u1eadm sau khi c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c k\u00edch ho\u1ea1t HTTPS s\u1ebd g\u00e2y ra m\u1ed9t \u0111\u1ed9 tr\u1ec5 nh\u1ecf v\u00ec c\u1ea7n th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh giao ti\u1ebfp m\u00e3 h\u00f3a, nh\u01b0ng v\u1edbi ph\u1ea7n c\u1ee9ng hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00e1c t\u1ed1i \u01b0u h\u00f3a trong giao th\u1ee9c, t\u00e1c \u0111\u1ed9ng n\u00e0y g\u1ea7n nh\u01b0 kh\u00f4ng \u0111\u00e1ng k\u1ec3. N\u1ebfu b\u1ea1n nh\u1eadn th\u1ea5y s\u1ef1 ch\u1eadm tr\u1ec5 r\u00f5 r\u1ec7t, c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n nh\u01b0: c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 kh\u00f4ng \u0111\u00fang c\u00e1ch, ch\u1ee9c n\u0103ng kh\u00f4i ph\u1ee5c k\u1ebft n\u1ed1i b\u1eb1ng TLS kh\u00f4ng \u0111\u01b0\u1ee3c b\u1eadt \u0111\u1ec3 t\u00e1i s\u1eed d\u1ee5ng c\u00e1c k\u1ebft n\u1ed1i \u0111\u00e3 c\u00f3, ho\u1eb7c vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 m\u00e3 h\u00f3a kh\u00f4ng an to\u00e0n d\u1eabn \u0111\u1ebfn chi ph\u00ed t\u00ednh to\u00e1n cao h\u01a1n.<br \/>\n\u0110\u1ec1 ngh\u1ecb ki\u1ec3m tra v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh SSL\/TLS tr\u00ean m\u00e1y ch\u1ee7, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1eadt ch\u1ee9c n\u0103ng OCSP \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 x\u00e1c th\u1ef1c tr\u1ea1ng th\u00e1i ch\u1ee9ng ch\u1ec9, c\u0169ng nh\u01b0 s\u1eed d\u1ee5ng c\u00e1c giao th\u1ee9c v\u00e0 b\u1ed9 m\u00e3 h\u00f3a hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 bao nhi\u00eau t\u00ean mi\u1ec1n ph\u1ee5?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (wildcard certificate) c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n con thu\u1ed9c m\u1ed9t c\u1ea5p \u0111\u1ed9 c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, m\u1ed9t ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p cho\u2026 <code data-no-auto-translation=\"\">*.example.com<\/code> C\u00e1c ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t c\u00f3 th\u1ec3 mang l\u1ea1i s\u1ef1 b\u1ea3o v\u1ec7 c\u1ea7n thi\u1ebft. <code data-no-auto-translation=\"\">blog.example.com<\/code>\u3001<code data-no-auto-translation=\"\">shop.example.com<\/code>\u3001<code data-no-auto-translation=\"\">mail.example.com<\/code> \u0110\u00e2y l\u00e0 c\u00e1c t\u00ean mi\u1ec1n con c\u00f9ng c\u1ea5p; tuy nhi\u00ean, ch\u00fang kh\u00f4ng th\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c t\u00ean mi\u1ec1n con \u1edf nhi\u1ec1u c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau. <code data-no-auto-translation=\"\">dev.www.example.com<\/code>N\u1ebfu c\u1ea7n b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n con \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau ho\u1eb7c nhi\u1ec1u t\u00ean mi\u1ec1n ch\u00ednh kh\u00e1c nhau, b\u1ea1n s\u1ebd c\u1ea7n xem x\u00e9t vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng thay th\u1ebf nhi\u1ec1u t\u00ean mi\u1ec1n (multi-domain wildcard certificate) ho\u1eb7c c\u00e1c gi\u1ea3i ph\u00e1p k\u1ebft h\u1ee3p kh\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ee9ng ch\u1ec9 SSL c\u1ee7a m\u1ed9t trang web c\u00f3 an to\u00e0n v\u00e0 hi\u1ec7u l\u1ef1c hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra nhanh ch\u00f3ng b\u1eb1ng c\u00e1ch nh\u1eadp \u0111\u1ecba ch\u1ec9 trang web v\u00e0o thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t. C\u00e1c trang web an to\u00e0n th\u01b0\u1eddng hi\u1ec3n th\u1ecb bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a; khi nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng \u0111\u00f3, b\u1ea1n c\u00f3 th\u1ec3 xem chi ti\u1ebft ch\u1ee9ng ch\u1ec9, x\u00e1c nh\u1eadn r\u1eb1ng ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi m\u1ed9t t\u1ed5 ch\u1ee9c \u0111\u00e1ng tin c\u1eady, h\u1ea1n s\u1eed d\u1ee5ng c\u1ee7a ch\u1ee9ng ch\u1ec9 ch\u01b0a h\u1ebft, v\u00e0 t\u00ean t\u1ed5 ch\u1ee9c \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong ch\u1ee9ng ch\u1ec9 ph\u00f9 h\u1ee3p v\u1edbi t\u00ean trang web m\u00e0 b\u1ea1n \u0111ang truy c\u1eadp.<br \/>\nNgo\u00e0i ra, ch\u1ee9ng ch\u1ec9 ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi t\u00ean mi\u1ec1n \u0111ang \u0111\u01b0\u1ee3c truy c\u1eadp; kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 l\u1ed7i v\u1ec1 s\u1ef1 kh\u00f4ng kh\u1edbp gi\u1eefa t\u00ean mi\u1ec1n v\u00e0 ch\u1ee9ng ch\u1ec9. \u0110\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi d\u00f9ng c\u00f3 y\u00eau c\u1ea7u cao h\u01a1n, h\u1ecd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra b\u1ea3o m\u1eadt SSL tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch v\u00e0 \u0111\u00e1nh gi\u00e1 chi ti\u1ebft h\u01a1n.<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y chi ti\u1ebft v\u1ec1 \u0111\u1ecbnh ngh\u0129a c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL, c\u0169ng nh\u01b0 vai tr\u00f2 ch\u00ednh c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c danh t\u00ednh. N\u00f3 t\u1ed5ng h\u1ee3p c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 DV, OV, EV, ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (%s), v\u00e0 ch\u1ee9ng ch\u1ec9 cho nhi\u1ec1u t\u00ean mi\u1ec1n, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p quy tr\u00ecnh th\u1ef1c hi\u1ec7n \u0111\u1ea7y \u0111\u1ee7 t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA), t\u1ea1o t\u1ec7p CSR (Certificate Signing Request), \u0111\u1ebfn vi\u1ec7c c\u00e0i \u0111\u1eb7t, tri\u1ec3n khai v\u00e0 ki\u1ec3m th\u1eed ch\u1ee9ng ch\u1ec9. \u0110\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn h\u1eefu \u00edch cho vi\u1ec7c<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[326,368,11,515,340],"knowledge_category":[277],"class_list":["post-12378820","knowledge_post","type-knowledge_post","status-publish","hentry","tag-https-guide","tag-seo-optimization","tag-ssl-certificate","tag-data-security","tag-website-encryption","knowledge_category-ssl-certificate"],"acf":{"site_seo_keywords":"SSL\u8bc1\u4e66,HTTPS,SSL\u8bc1\u4e66\u7c7b\u578b,SSL\u5b89\u88c5,\u6570\u636e\u52a0\u5bc6,OV\u8bc1\u4e66,\u901a\u914d\u7b26SSL\u8bc1\u4e66,SSL\u8bc1\u4e66\u7533\u8bf7\u6307\u5357"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12378820","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\/12378820\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12378820"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12378820"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12378820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}