{"id":12367370,"date":"2026-03-14T04:48:24","date_gmt":"2026-03-13T20:48:24","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90ssl%e8%af%81%e4%b9%a6%ef%bc%9a%e7%b1%bb%e5%9e%8b%e3%80%81%e9%80%89%e8%b4%ad%e4%b8%8e%e9%83%a8%e7%bd%b2%e7%9a%84%e5%85%a8%e6%b5%81%e7%a8%8b%e5%ae%9e%e8%b7%b5\/"},"modified":"2026-03-14T04:54:17","modified_gmt":"2026-03-13T20:54:17","slug":"ssl-certificate-types-selection-deployment-guide","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-types-selection-deployment-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh to\u00e0n di\u1ec7n: Ph\u00e2n t\u00edch s\u00e2u v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL - Lo\u1ea1i, L\u1ef1a ch\u1ecdn v\u00e0 Quy tr\u00ecnh tri\u1ec3n khai"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Trong m\u00f4i tr\u01b0\u1eddng internet ng\u00e0y nay, n\u01a1i m\u00e0 an ninh d\u1eef li\u1ec7u l\u00e0 y\u00eau c\u1ea7u c\u1ed1t l\u00f5i, ch\u1ee9ng ch\u1ec9 SSL \u0111\u00e3 tr\u1edf th\u00e0nh n\u1ec1n t\u1ea3ng quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a th\u00f4ng tin truy\u1ec1n th\u00f4ng tr\u00ean m\u1ea1ng. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng h\u00ecnh kh\u00f3a nh\u1ecf xu\u1ea5t hi\u1ec7n trong thanh \u0111\u1ecba ch\u1ec9, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng to\u00e0n di\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c t\u1ed5 ch\u1ee9c uy t\u00edn ch\u1ee9ng nh\u1eadn, s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c cu\u1ed9c tr\u00f2 chuy\u1ec7n an to\u00e0n gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7. Khi m\u1ed9t trang web tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL, d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 vi\u1ec7c nghe l\u00e9n, s\u1eeda \u0111\u1ed5i ho\u1eb7c gi\u1ea3 m\u1ea1o th\u00f4ng tin, t\u1eeb \u0111\u00f3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c s\u1ef1 tin t\u01b0\u1edfng c\u01a1 b\u1ea3n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ed1i v\u1edbi trang web \u0111\u00f3.<\/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 s\u1ef1 kh\u00e1c bi\u1ec7t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan tr\u1ecdng \u0111\u1ec3 ch\u1ecdn mua ch\u1ee9ng ch\u1ec9 m\u1ed9t c\u00e1ch \u0111\u00fang \u0111\u1eafn. C\u00e1c ch\u1ee9ng ch\u1ec9 tr\u00ean th\u1ecb tr\u01b0\u1eddng ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c v\u00e0 ph\u1ea1m vi bao ph\u1ee7 t\u00ean mi\u1ec1n.<\/p>\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\">Lo\u1ea1i ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (Domain Validation Certificate) l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 c\u00f3 y\u00eau c\u1ea7u \u0111\u0103ng k\u00fd th\u1ea5p nh\u1ea5t v\u00e0 qu\u00e1 tr\u00ecnh c\u1ea5p ch\u1ee9ng ch\u1ec9 di\u1ec5n ra 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 g\u1eedi email x\u00e1c th\u1ef1c \u0111\u1ebfn email \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3 ho\u1eb7c y\u00eau c\u1ea7u thi\u1ebft l\u1eadp c\u00e1c b\u1ea3n ghi DNS c\u1ee5 th\u1ec3. Lo\u1ea1i ch\u1ee9ng ch\u1ec9 n\u00e0y c\u00f3 gi\u00e1 v\u1eeba t\u00fai ti\u1ec1n, 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 n\u1ed9i b\u1ed9 c\u1ea7n b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n. N\u00f3 cung c\u1ea5p k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a cho tr\u00ecnh duy\u1ec7t ng\u01b0\u1eddi d\u00f9ng, nh\u01b0ng t\u00ean c\u00f4ng ty s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong th\u00f4ng tin chi ti\u1ebft c\u1ee7a ch\u1ee9ng ch\u1ec9.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-guide-principles-deployment-security-trust\/\">Ph\u00e2n t\u00edch to\u00e0n di\u1ec7n ch\u1ee9ng ch\u1ec9 SSL: T\u1eeb nguy\u00ean l\u00fd \u0111\u1ebfn tri\u1ec3n khai, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 ni\u1ec1m tin cho website<\/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\u1ed5 ch\u1ee9c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lo\u1ea1i ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c (Organization Validation \u2013 OV) \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean n\u1ec1n t\u1ea3ng c\u1ee7a ch\u1ee9ng ch\u1ec9 DV (Domain Validation), nh\u01b0ng b\u1ed5 sung th\u00eam b\u01b0\u1edbc ki\u1ec3m tra t\u00ednh x\u00e1c th\u1ef1c v\u1ec1 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u1ed5 ch\u1ee9c \u0111\u0103ng k\u00fd ch\u1ee9ng ch\u1ec9. C\u00e1c t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authorities) s\u1ebd ki\u1ec3m tra th\u00f4ng tin \u0111\u0103ng k\u00fd ph\u00e1p l\u00fd c\u1ee7a doanh nghi\u1ec7p th\u00f4ng qua c\u01a1 s\u1edf d\u1eef li\u1ec7u ch\u00ednh th\u1ee9c, bao g\u1ed3m t\u00ean c\u00f4ng ty, \u0111\u1ecba ch\u1ec9, v.v. Qu\u00e1 tr\u00ecnh ki\u1ec3m tra n\u00e0y th\u01b0\u1eddng m\u1ea5t v\u00e0i ng\u00e0y l\u00e0m vi\u1ec7c. Ch\u1ee9ng ch\u1ec9 OV s\u1ebd hi\u1ec3n th\u1ecb t\u00ean c\u00f4ng ty trong c\u00e1c th\u00f4ng tin chi ti\u1ebft c\u1ee7a ch\u1ee9ng ch\u1ec9, gi\u00fap t\u0103ng m\u1ee9c \u0111\u1ed9 tin c\u1eady \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng. Do \u0111\u00f3, ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean c\u00e1c trang web doanh nghi\u1ec7p, n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, v\u00e0 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p kh\u00e1c c\u1ea7n th\u1ec3 hi\u1ec7n h\u00ecnh \u1ea3nh tin c\u1eady c\u1ee7a t\u1ed5 ch\u1ee9c.<\/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 m\u1edf r\u1ed9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ch\u1ee9ng ch\u1ec9 lo\u1ea1i EV (Extended Validation) tu\u00e2n theo c\u00e1c ti\u00eau chu\u1ea9n x\u00e1c th\u1ef1c danh t\u00ednh nghi\u00eam ng\u1eb7t v\u00e0 th\u1ed1ng nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u, \u0111\u1ea1i di\u1ec7n cho c\u1ea5p \u0111\u1ed9 x\u00e1c th\u1ef1c cao nh\u1ea5t trong c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL. C\u00e1c t\u1ed5 ch\u1ee9c cung c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authorities) s\u1ebd ti\u1ebfn h\u00e0nh ki\u1ec3m tra to\u00e0n di\u1ec7n v\u1ec1 t\u00ednh h\u1ee3p ph\u00e1p, c\u01a1 s\u1edf v\u1eadt ch\u1ea5t v\u00e0 ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a t\u1ed5 ch\u1ee9c \u0111\u00f3. Tr\u00ean c\u00e1c trang web s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 EV, t\u00ean c\u00f4ng ty s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng m\u00e0u xanh l\u00e1 c\u00e2y ngay trong thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t, \u0111\u00e2y l\u00e0 t\u00edn hi\u1ec7u an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady r\u00f5 r\u00e0ng nh\u1ea5t, d\u1ec5 nh\u1eadn th\u1ea5y nh\u1ea5t \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng. C\u00e1c ng\u00e2n h\u00e0ng, t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh v\u00e0 n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed l\u1edbn th\u01b0\u1eddng s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 EV nh\u1eb1m t\u0103ng c\u01b0\u1eddng s\u1ef1 tin t\u01b0\u1edfng c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u00e2n lo\u1ea1i theo ph\u1ea1m vi bao ph\u1ee7 c\u1ee7a t\u00ean mi\u1ec1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c, ch\u1ee9ng ch\u1ec9 c\u00f2n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo s\u1ed1 l\u01b0\u1ee3ng t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7: ch\u1ee9ng ch\u1ec9 cho m\u1ed9t t\u00ean mi\u1ec1n, ch\u1ee9ng ch\u1ec9 cho nhi\u1ec1u t\u00ean mi\u1ec1n v\u00e0 ch\u1ee9ng ch\u1ec9 d\u1ea1ng k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (*). Ch\u1ee9ng ch\u1ec9 cho m\u1ed9t t\u00ean mi\u1ec1n ch\u1ec9 b\u1ea3o v\u1ec7 m\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng; ch\u1ee9ng ch\u1ec9 cho nhi\u1ec1u t\u00ean mi\u1ec1n cho ph\u00e9p b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n kh\u00e1c nhau trong c\u00f9ng m\u1ed9t ch\u1ee9ng ch\u1ec9; ch\u1ee9ng ch\u1ec9 d\u1ea1ng k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n c\u00f3 th\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, l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho nh\u1eefng trang web c\u00f3 nhi\u1ec1u t\u00ean mi\u1ec1n con, gi\u00fap vi\u1ec7c qu\u1ea3n l\u00fd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn mua ch\u1ee9ng ch\u1ec9 SSL ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u kinh doanh?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ee9ng ch\u1ec9 SSL kh\u00f4ng ph\u1ea3i c\u1ee9 \u0111\u1eaft l\u00e0 t\u1ed1t; \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t l\u00e0 ch\u1ee9ng ch\u1ec9 \u0111\u00f3 ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi sc\u00e9nario kinh doanh v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 kh\u00eda c\u1ea1nh c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng khi \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea7u ti\u00ean l\u00e0 vi\u1ec7c x\u00e1c minh m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9. \u0110\u1ed1i v\u1edbi c\u00e1c trang web ch\u00ednh th\u1ee9c ho\u1eb7c trang web th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, ch\u1ee9ng ch\u1ec9 OV cung c\u1ea5p s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa gi\u00e1 tr\u1ecb v\u00e0 m\u1ee9c \u0111\u1ed9 tin c\u1eady. N\u1ebfu trang web th\u1ef1c hi\u1ec7n c\u00e1c giao d\u1ecbch tr\u1ef1c tuy\u1ebfn ho\u1eb7c x\u1eed l\u00fd th\u00f4ng tin nh\u1ea1y c\u1ea3m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, ch\u1ee9ng ch\u1ec9 EV v\u1edbi thanh \u0111\u1ecba ch\u1ec9 m\u00e0u xanh l\u00e1 c\u00e2y s\u1ebd gi\u00fap t\u0103ng \u0111\u00e1ng k\u1ec3 t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i v\u00e0 l\u00f2ng tin c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 c\u00e1 nh\u00e2n kh\u00f4ng c\u1ea7n hi\u1ec3n th\u1ecb th\u00f4ng tin v\u1ec1 t\u1ed5 ch\u1ee9c, ch\u1ee9ng ch\u1ec9 DV \u0111\u00e3 \u0111\u1ee7 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u m\u00e3 h\u00f3a.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-types-buy-install-secure-deployment-guide\/\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: Ph\u00e2n lo\u1ea1i, mua, c\u00e0i \u0111\u1eb7t v\u00e0 tri\u1ec3n khai an to\u00e0n<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo l\u00e0 chi\u1ebfn l\u01b0\u1ee3c ph\u1ee7 s\u00f3ng t\u00ean mi\u1ec1n (domain name coverage strategy). N\u1ebfu doanh nghi\u1ec7p ch\u1ec9 s\u1eed d\u1ee5ng m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh, th\u00ec ch\u1ec9 c\u1ea7n m\u1ed9t ch\u1ee9ng ch\u1ec9 cho t\u00ean mi\u1ec1n \u0111\u00f3 l\u00e0 \u0111\u1ee7. Tuy nhi\u00ean, n\u1ebfu b\u1ea1n qu\u1ea3n l\u00fd nhi\u1ec1u th\u01b0\u01a1ng hi\u1ec7u ho\u1eb7c c\u00e1c d\u00f2ng kinh doanh kh\u00e1c nhau v\u1edbi c\u00e1c t\u00ean mi\u1ec1n ri\u00eang bi\u1ec7t, vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t ch\u1ee9ng ch\u1ec9 \u0111a t\u00ean mi\u1ec1n s\u1ebd gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh qu\u1ea3n l\u00fd v\u00e0 gia h\u1ea1n. \u0110\u1ed1i v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng c\u00f3 nhi\u1ec1u t\u00ean mi\u1ec1n con nh\u01b0 di\u1ec5n \u0111\u00e0n, blog, c\u1eeda h\u00e0ng tr\u1ef1c tuy\u1ebfn, ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (wildcard certificate) l\u00e0 l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u01b0\u01a1ng hi\u1ec7u v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a ch\u1ee9ng ch\u1ec9 c\u0169ng r\u1ea5t quan tr\u1ecdng. Vi\u1ec7c ch\u1ecdn nh\u1eefng ch\u1ee9ng ch\u1ec9 do c\u00e1c t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA) h\u00e0ng \u0111\u1ea7u tr\u00ean to\u00e0n c\u1ea7u ho\u1eb7c c\u00e1c t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 g\u1ed1c \u0111\u00e1ng tin c\u1eady c\u1ea5p s\u1ebd \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch ho\u00e0n h\u1ea3o tr\u00ean nhi\u1ec1u lo\u1ea1i tr\u00ecnh duy\u1ec7t, h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng, gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c c\u1ea3nh b\u00e1o b\u1ea3o m\u1eadt v\u1ec1 \u201cch\u1ee9ng ch\u1ec9 kh\u00f4ng \u0111\u00e1ng tin c\u1eady\u201d. Ngo\u00e0i ra, b\u1ea1n c\u0169ng n\u00ean quan t\u00e2m \u0111\u1ebfn d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng, m\u1ee9c b\u1ea3o hi\u1ec3m c\u0169ng nh\u01b0 c\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cu\u1ed1i c\u00f9ng, x\u00e9t \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7, khuy\u1ebfn ngh\u1ecb n\u00ean ch\u1ecdn c\u00e1c ch\u1ee9ng ch\u1ec9 h\u1ed7 tr\u1ee3 c\u00e1c ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a m\u1edbi nh\u1ea5t, \u0111\u1ed3ng th\u1eddi t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho nh\u1eefng n\u00e2ng c\u1ea5p c\u00f4ng ngh\u1ec7 c\u00f3 th\u1ec3 x\u1ea3y ra trong t\u01b0\u01a1ng lai (ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a sau th\u1eddi \u0111\u1ea1i l\u01b0\u1ee3ng t\u1eed).<\/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<h2 class=\"wp-block-heading\">C\u00e1c b\u01b0\u1edbc th\u1ef1c h\u00e0nh tri\u1ec3n khai v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi mua ch\u1ee9ng ch\u1ec9 th\u00e0nh c\u00f4ng, vi\u1ec7c tri\u1ec3n khai \u0111\u00fang c\u00e1ch l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Quy tr\u00ecnh tri\u1ec3n khai c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft th\u00e0nh b\u1ed1n giai \u0111o\u1ea1n: n\u1ed9p \u0111\u01a1n, x\u00e1c th\u1ef1c, c\u00e0i \u0111\u1eb7t v\u00e0 ki\u1ec3m tra.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 t\u1ea1o y\u00eau c\u1ea7u k\u00fd ch\u1ee9ng ch\u1ec9 (Certificate Signing Request \u2013 CSR). H\u00e3y t\u1ea1o t\u1ec7p CSR v\u00e0 kh\u00f3a ri\u00eang t\u01b0\u01a1ng \u1ee9ng tr\u00ean m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n. T\u1ec7p CSR ch\u1ee9a th\u00f4ng tin t\u00ean mi\u1ec1n, th\u00f4ng tin t\u1ed5 ch\u1ee9c c\u1ee7a b\u1ea1n, c\u00f9ng v\u1edbi kh\u00f3a c\u00f4ng khai; kh\u00f3a ri\u00eang t\u01b0 ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef m\u1ed9t c\u00e1ch an to\u00e0n tuy\u1ec7t \u0111\u1ed1i tr\u00ean m\u00e1y ch\u1ee7 v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9. Sau \u0111\u00f3, g\u1eedi t\u1ec7p CSR \u0111\u1ebfn nh\u00e0 cung c\u1ea5p ch\u1ee9ng ch\u1ec9 v\u00e0 ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 m\u00e0 b\u1ea1n c\u1ea7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc th\u1ee9 hai l\u00e0 ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n ho\u1eb7c t\u1ed5 ch\u1ee9c. T\u00f9y theo lo\u1ea1i ch\u1ee9ng ch\u1ec9 m\u00e0 b\u1ea1n \u0111\u0103ng k\u00fd, h\u00e3y th\u1ef1c hi\u1ec7n theo y\u00eau c\u1ea7u c\u1ee7a t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority). \u0110\u1ed1i v\u1edbi ch\u1ee9ng ch\u1ec9 DV (Domain Validation), qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng di\u1ec5n ra r\u1ea5t nhanh; 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 ch\u1ee9ng minh li\u00ean quan cho t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 v\u00e0 ch\u1edd \u0111\u1ee3i qu\u00e1 tr\u00ecnh xem x\u00e9t th\u1ee7 c\u00f4ng.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-types-how-it-works-deployment-best-practices-guide-2026\/\">Ph\u00e2n t\u00edch s\u00e2u v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL: H\u01b0\u1edbng d\u1eabn v\u1ec1 lo\u1ea1i, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh tri\u1ec3n khai t\u1ed1t nh\u1ea5t<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc th\u1ee9 ba l\u00e0 t\u1ea3i xu\u1ed1ng v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9. Sau khi qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c th\u00f4ng qua, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c t\u1ec7p ch\u1ee9ng ch\u1ec9 t\u1eeb t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority). C\u00e1ch th\u1ee9c c\u00e0i \u0111\u1eb7t s\u1ebd kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o ph\u1ea7n m\u1ec1m m\u00e1y ch\u1ee7 m\u00e0 b\u1ea1n \u0111ang s\u1eed d\u1ee5ng. \u0110\u1ed1i v\u1edbi Nginx, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh t\u1ec7p ch\u1ee9ng ch\u1ec9 v\u00e0 kh\u00f3a ri\u00eang t\u01b0 trong ph\u1ea7n c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 (server block).<code data-no-auto-translation=\"\">ssl_certificate<\/code>\u548c<code data-no-auto-translation=\"\">ssl_certificate_key<\/code>Trong c\u00e1c ch\u1ec9 th\u1ecb \u0111\u00f3, \u0111\u1ed1i v\u1edbi Apache, c\u1ea7n th\u1ef1c hi\u1ec7n theo nh\u1eefng b\u01b0\u1edbc c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh.<code data-no-auto-translation=\"\">SSLCertificateFile<\/code>\u548c<code data-no-auto-translation=\"\">SSLCertificateKeyFile<\/code>H\u00e3y th\u1ef1c hi\u1ec7n c\u1ea5u h\u00ecnh theo c\u00e1c h\u01b0\u1edbng d\u1eabn \u0111\u01b0\u1ee3c cung c\u1ea5p. Trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng chu\u1ed7i ch\u1ee9ng ch\u1ec9 (certificate chain) l\u00e0 ho\u00e0n ch\u1ec9nh, ngh\u0129a l\u00e0 t\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9ng ch\u1ec9 trung gian c\u0169ng \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t \u0111\u00fang c\u00e1ch; n\u1ebfu kh\u00f4ng, m\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t c\u00f3 th\u1ec3 kh\u00f4ng tin t\u01b0\u1edfng v\u00e0o<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc th\u1ee9 t\u01b0 l\u00e0 th\u1ef1c hi\u1ec7n vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn t\u1ef1 \u0111\u1ed9ng sang HTTPS v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh. H\u00e3y th\u00eam quy t\u1eafc \u0111\u1ecbnh tuy\u1ebfn 301 v\u00e0o c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u1ec3 t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u HTTP \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n h\u01b0\u1edbng sang HTTPS. \u0110\u1ed3ng th\u1eddi, c\u1ea7n c\u1ea5u h\u00ecnh ch\u00ednh s\u00e1ch HSTS (HTTP Strict Transport Security) \u0111\u1ec3 th\u00f4ng b\u00e1o cho tr\u00ecnh duy\u1ec7t r\u1eb1ng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, tr\u00ecnh duy\u1ec7t ph\u1ea3i s\u1eed d\u1ee5ng HTTPS \u0111\u1ec3 truy c\u1eadp trang web, nh\u1eb1m ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng nh\u1eb1m l\u00e0m gi\u1ea3m m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt. Cu\u1ed1i c\u00f9ng, h\u00e3y ki\u1ec3m tra phi\u00ean b\u1ea3n giao th\u1ee9c TLS, v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c phi\u00ean b\u1ea3n c\u0169 kh\u00f4ng an to\u00e0n, v\u00e0 c\u1ea5u h\u00ecnh c\u00e1c b\u1ed9 m\u00e3 h\u00f3a an to\u00e0n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi ch\u1ee9ng ch\u1ec9 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 SSL kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t l\u1ea7n duy nh\u1ea5t l\u00e0 \u0111\u1ee7; qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi ch\u1ee9ng ch\u1ec9 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh l\u00e2u d\u00e0i. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m nhi\u1ec1u kh\u00eda c\u1ea1nh nh\u01b0 gi\u00e1m s\u00e1t, gia h\u1ea1n, h\u1ee7y b\u1ecf ch\u1ee9ng ch\u1ec9, v\u00e0 thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac h\u1ec7 th<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea7u ti\u00ean l\u00e0 vi\u1ec7c gi\u00e1m s\u00e1t v\u00e0 gia h\u1ea1n c\u00e1c ch\u1ee9ng ch\u1ec9. C\u00e1c ch\u1ee9ng ch\u1ec9 \u0111\u1ec1u c\u00f3 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3; khi h\u1ebft h\u1ea1n, trang web s\u1ebd kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c v\u00e0 c\u00e1c c\u1ea3nh b\u00e1o b\u1ea3o m\u1eadt s\u1ebd xu\u1ea5t hi\u1ec7n. C\u1ea7n thi\u1ebft ph\u1ea3i thi\u1ebft l\u1eadp m\u1ed9t h\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o hi\u1ec7u qu\u1ea3 \u0111\u1ec3 nh\u1eafc nh\u1edf ng\u01b0\u1eddi d\u00f9ng v\u1ec1 vi\u1ec7c gia h\u1ea1n ch\u1ee9ng ch\u1ec9. \u0110\u1ec1 ngh\u1ecb b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh gia h\u1ea1n \u00edt nh\u1ea5t 30 ng\u00e0y tr\u01b0\u1edbc khi ch\u1ee9ng ch\u1ec9 h\u1ebft h\u1ea1n. C\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f3 th\u1ec3 gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a r\u1ea5t nhi\u1ec1u c\u00f4ng vi\u1ec7c gia h\u1ea1n, nh\u01b0ng sau m\u1ed7i thao t\u00e1c t\u1ef1 \u0111\u1ed9ng, v\u1eabn c\u1ea7n ph\u1ea3i ki\u1ec3m tra l\u1ea1i th\u1ee7 c\u00f4ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo l\u00e0 vi\u1ec7c qu\u1ea3n l\u00fd b\u1ea3o m\u1eadt kh\u00f3a ri\u00eang v\u00e0 h\u1ee7y b\u1ecf ch\u1ee9ng ch\u1ec9. Kh\u00f3a ri\u00eang l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong b\u1ea3o m\u1eadt; b\u1ea1n c\u1ea7n t\u1ea1o ra nh\u1eefng kh\u00f3a c\u00f3 \u0111\u1ed9 m\u1ea1nh cao v\u00e0 l\u01b0u tr\u1eef ch\u00fang \u1edf nh\u1eefng n\u01a1i an to\u00e0n, v\u1edbi quy\u1ec1n truy c\u1eadp \u0111\u01b0\u1ee3c h\u1ea1n ch\u1ebf. Thay \u0111\u1ed5i kh\u00f3a ri\u00eang \u0111\u1ecbnh k\u1ef3 l\u00e0 m\u1ed9t th\u00f3i quen b\u1ea3o m\u1eadt t\u1ed1t. N\u1ebfu kh\u00f3a ri\u00eang b\u1ecb r\u00f2 r\u1ec9, b\u1ea1n c\u1ea7n ngay l\u1eadp t\u1ee9c y\u00eau c\u1ea7u t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority) h\u1ee7y b\u1ecf ch\u1ee9ng ch\u1ec9 \u0111\u00f3 v\u00e0 c\u1ea5p l\u1ea1i m\u1ed9t ch\u1ee9ng ch\u1ec9 m\u1edbi. \u0110\u1ed3ng th\u1eddi, b\u1ea1n n\u00ean b\u1eadt t\u00ednh n\u0103ng OCSP (Online Certificate Status Protocol) trong c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u1ec3 c\u00f3 th\u1ec3 ki\u1ec3m tra tr\u1ea1ng th\u00e1i ch\u1ee9ng ch\u1ec9 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 tr\u1ef1c tuy\u1ebfn, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00ea<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cu\u1ed1i c\u00f9ng, l\u00e0 chi\u1ebfn l\u01b0\u1ee3c ki\u1ebfn tr\u00fac s\u1eed d\u1ee5ng nhi\u1ec1u lo\u1ea1i ch\u1ee9ng ch\u1ec9 kh\u00e1c nhau. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn ho\u1eb7c c\u00f3 t\u00ednh ch\u1ea5t quan tr\u1ecdng, kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng chung m\u1ed9t ch\u1ee9ng ch\u1ec9 tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c m\u00e1y ch\u1ee7. Thay v\u00e0o \u0111\u00f3, n\u00ean \u00e1p d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c ph\u00e2n t\u1ea7ng: tri\u1ec3n khai c\u00e1c ch\u1ee9ng ch\u1ec9 d\u00e0nh cho ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i tr\u00ean b\u1ed9 ph\u00e2n ph\u1ed1i t\u1ea3i (load balancer) ho\u1eb7c t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web, v\u00e0 s\u1eed d\u1ee5ng c\u00e1c ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi b\u00ean n\u1ed9i b\u1ed9 ho\u1eb7c c\u00f3 ch\u00ednh s\u00e1ch kh\u00e1c nhau gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 ph\u00eda sau. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u nguy c\u01a1 b\u1ecb t\u1ea5n c\u00f4ng v\u00e0 tu\u00e2n th\u1ee7 nguy\u00ean t\u1eafc \u201cc\u1ea5p quy\u1ec1n t\u1ed1i thi\u1ec3u\u201d.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00f3m l\u1ea1i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL l\u00e0 b\u01b0\u1edbc c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c trang web an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady. T\u1eeb vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n gi\u1eefa c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 DV, OV, EV, \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 ph\u00f9 h\u1ee3p v\u00e0 ph\u1ea1m vi b\u1ea3o v\u1ec7 d\u1ef1a tr\u00ean nhu c\u1ea7u kinh doanh, c\u00f9ng v\u1edbi quy tr\u00ecnh tri\u1ec3n khai v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1eb7t ch\u1ebd, c\u00f9ng v\u1edbi vi\u1ec7c qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi ch\u1ee9ng ch\u1ec9 m\u1ed9t c\u00e1ch nghi\u00eam ng\u1eb7t, m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u r\u1ea5t quan tr\u1ecdng. Vi\u1ec7c th\u1ef1c hi\u1ec7n \u0111\u00fang c\u00e1ch c\u00e1c c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a SSL\/TLS kh\u00f4ng ch\u1ec9 l\u00e0 y\u00eau c\u1ea7u v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n l\u00e0 l\u1eddi cam k\u1ebft nghi\u00eam t\u00fac \u0111\u1ed1i v\u1edbi quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 s\u1ef1 tin t\u01b0\u1edfng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. V\u1edbi s\u1ef1 thay \u0111\u1ed5i kh\u00f4ng ng\u1eebng c\u1ee7a c\u00e1c m\u1ed1i \u0111e d\u1ecda tr\u00ean m\u1ea1ng, vi\u1ec7c theo d\u00f5i li\u00ean t\u1ee5c c\u00e1c ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a m\u1edbi nh\u1ea5t v\u00e0 \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c ti\u1ec5n b\u1ea3o m\u1eadt t\u1ed1t nh\u1ea5t s\u1ebd l\u00e0 nhi\u1ec7m v\u1ee5 l\u00e2u d\u00e0i \u0111\u1ec3 b\u1ea3o v\u1ec7 an to\u00e0n cho c\u00e1c t\u00e0i s\u1ea3n s\u1ed1.<\/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\">M\u1ed9t t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 c\u00e0i \u0111\u1eb7t nhi\u1ec1u ch\u1ee9ng ch\u1ec9 SSL kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 c\u1ea5u h\u00ecnh nhi\u1ec1u ch\u1ee9ng ch\u1ec9 SSL cho c\u00f9ng m\u1ed9t t\u00ean mi\u1ec1n tr\u00ean c\u00e1c \u0111\u1ecba ch\u1ec9 IP kh\u00e1c nhau ho\u1eb7c c\u00e1c c\u1ed5ng kh\u00e1c nhau tr\u00ean c\u00f9ng m\u1ed9t m\u00e1y ch\u1ee7. Tuy nhi\u00ean, tr\u00ean c\u00e1c c\u1ed5ng HTTPS ti\u00eau chu\u1ea9n, m\u1ed9t t\u00ean mi\u1ec1n th\u01b0\u1eddng ch\u1ec9 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u1ed9t ch\u1ee9ng ch\u1ec9 h\u1ee3p l\u1ec7. C\u00e1ch th\u1ef1c hi\u1ec7n ph\u1ed5 bi\u1ebfn h\u01a1n l\u00e0 s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 \u0111a t\u00ean mi\u1ec1n (multi-domain certificate) ho\u1eb7c ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (* wildcard certificate) \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a nhi\u1ec1u sub-domain ho\u1eb7c c\u00e1c t\u00ean mi\u1ec1n kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u90e8\u7f72SSL\u8bc1\u4e66\u540e\u7f51\u7ad9\u8bbf\u95ee\u53d8\u6162\u600e\u4e48\u529e\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL th\u1ef1c s\u1ef1 s\u1ebd g\u00e2y ra m\u1ed9t s\u1ed1 chi ph\u00ed li\u00ean quan \u0111\u1ebfn qu\u00e1 tr\u00ecnh giao ti\u1ebfp TLS (TLS handshake) c\u0169ng nh\u01b0 c\u00e1c thao t\u00e1c m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u, nh\u01b0ng nh\u1eefng chi ph\u00ed n\u00e0y th\u01b0\u1eddng r\u1ea5t nh\u1ecf. N\u1ebfu b\u1ea1n nh\u1eadn th\u1ea5y t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web gi\u1ea3m \u0111\u00e1ng k\u1ec3, c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n sau: chu\u1ed7i ch\u1ee9ng ch\u1ec9 kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7, khi\u1ebfn tr\u00ecnh duy\u1ec7t ph\u1ea3i t\u1ea3i th\u00eam c\u00e1c ch\u1ee9ng ch\u1ec9 trung gian; c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 kh\u00f4ng cho ph\u00e9p kh\u00f4i ph\u1ee5c th\u00f4ng tin phi\u00ean truy c\u1eadp (session recovery); s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 m\u00e3 h\u00f3a l\u1ed7i th\u1eddi ho\u1eb7c k\u00e9m hi\u1ec7u qu\u1ea3; ho\u1eb7c ch\u1ee9c n\u0103ng HTTP\/2 ch\u01b0a \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t. Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh TLS (ch\u1eb3ng h\u1ea1n b\u1eb1ng c\u00e1ch k\u00edch ho\u1ea1t t\u00ednh n\u0103ng OCSP, l\u1ef1a ch\u1ecdn c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a hi\u1ec7u qu\u1ea3 h\u01a1n, v\u00e0 s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi HTTP\/2) c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n nh\u1eefng \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn hi\u1ec7u n\u0103ng, th\u1eadm ch\u00ed c\u00f2n gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng \u0111a lu\u1ed3ng (multiplexing) c\u1ee7a HTTP\/2<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n gi\u1eefa ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed v\u00e0 tr\u1ea3 ph\u00ed l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed th\u01b0\u1eddng kh\u00f4ng kh\u00e1c g\u00ec v\u1ec1 m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt so v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 c\u00f3 ph\u00ed; c\u1ea3 hai \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf nh\u1eefng \u0111i\u1ec3m sau:  \n\u2013 C\u00e1c ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed th\u01b0\u1eddng thu\u1ed9c lo\u1ea1i DV (Domain Validation) v\u00e0 kh\u00f4ng y\u00eau c\u1ea7u x\u00e1c th\u1ef1c danh t\u00ednh t\u1ed5 ch\u1ee9c;  \n\u2013 Th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng c\u1ee7a ch\u00fang ng\u1eafn h\u01a1n, do \u0111\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c gia h\u1ea1n th\u01b0\u1eddng xuy\u00ean;  \n\u2013 Th\u00f4ng th\u01b0\u1eddng, ch\u00fang kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt hay \u0111\u1ea3m b\u1ea3o v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng;  \n\u2013 Ch\u00fang kh\u00f4ng cung c\u1ea5p b\u1ea5t k\u1ef3 b\u1ea3o hi\u1ec3m n\u00e0o \u0111\u1ec3 b\u1ed3i th\u01b0\u1eddng thi\u1ec7t h\u1ea1i ph\u00e1t sinh do v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn ch\u1ee9ng ch\u1ec9.  \nNg\u01b0\u1ee3c l\u1ea1i, c\u00e1c ch\u1ee9ng ch\u1ec9 c\u00f3 ph\u00ed cung c\u1ea5p d\u1ecbch v\u1ee5 x\u00e1c th\u1ef1c danh t\u00ednh t\u1ed5 ch\u1ee9c, th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng d\u00e0i h\u01a1n, h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt chuy\u00ean n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">N\u1ebfu ch\u1ee9ng ch\u1ec9 SSL h\u1ebft h\u1ea1n, s\u1ebd c\u00f3 nh\u1eefng h\u1eadu qu\u1ea3 sau:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t khi ch\u1ee9ng ch\u1ec9 SSL h\u1ebft h\u1ea1n, tr\u00ecnh duy\u1ec7t v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng s\u1ebd coi n\u00f3 l\u00e0 kh\u00f4ng h\u1ee3p l\u1ec7 v\u00e0 hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o r\u00f5 r\u00e0ng v\u1ec1 m\u1ee9c \u0111\u1ed9 \u201ckh\u00f4ng an to\u00e0n\u201d cho ng\u01b0\u1eddi d\u00f9ng; trong tr\u01b0\u1eddng h\u1ee3p nghi\u00eam tr\u1ecdng, ch\u00fang th\u1eadm ch\u00ed c\u00f3 th\u1ec3 ch\u1eb7n ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o trang web. \u0110i\u1ec1u n\u00e0y s\u1ebd g\u00e2y ra s\u1ef1 gi\u00e1n \u0111o\u1ea1n trong d\u1ecbch v\u1ee5 c\u1ee7a trang web, \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u. \u0110\u1ed1i v\u1edbi c\u00e1c trang web th\u01b0\u01a1ng m\u1ea1i, t\u00ecnh tr\u1ea1ng n\u00e0y c\u00f2n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c giao d\u1ecbch b\u1ecb th\u1ea5t b\u1ea1i, ng\u01b0\u1eddi d\u00f9ng r\u1eddi b\u1ecf trang web, v\u00e0 th\u1ee9 h\u1ea1ng tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm gi\u1ea3m s\u00fat. Do \u0111\u00f3, vi\u1ec7c thi\u1ebft l\u1eadp quy tr\u00ecnh gi\u00e1m s\u00e1t v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 t\u1ef1 \u0111\u1ed9<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u00e0i vi\u1ebft n\u00e0y gi\u1edbi thi\u1ec7u to\u00e0n di\u1ec7n vai tr\u00f2 n\u1ec1n t\u1ea3ng c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL trong b\u1ea3o m\u1eadt m\u1ea1ng. Ph\u00e2n t\u00edch chi ti\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a ch\u1ee9ng ch\u1ec9 DV, OV, EV, v\u00e0 h\u01b0\u1edbng d\u1eabn c\u00e1ch l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean nhu c\u1ea7u kinh doanh. Cu\u1ed1i c\u00f9ng, cung c\u1ea5p c\u00e1c b\u01b0\u1edbc th\u1ef1c h\u00e0nh tri\u1ec3n khai \u0111\u1ea7y \u0111\u1ee7 t\u1eeb \u0111\u0103ng k\u00fd, x\u00e1c th\u1ef1c \u0111\u1ebfn c\u00e0i \u0111\u1eb7t c\u1ea5u h\u00ecnh tr\u00ean m\u00e1y ch\u1ee7, gi\u00fap ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n m\u00e3 h\u00f3a an to\u00e0n cho website.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[11,329,394,338,330],"knowledge_category":[277],"class_list":["post-12367370","knowledge_post","type-knowledge_post","status-publish","hentry","tag-ssl-certificate","tag-data-encryption","tag-website-deployment","tag-cybersecurity","tag-certificate-types","knowledge_category-ssl-certificate"],"acf":{"site_seo_keywords":"SSL\u8bc1\u4e66,SSL\u8bc1\u4e66\u7c7b\u578b,SSL\u8bc1\u4e66\u9009\u8d2d,SSL\u8bc1\u4e66\u90e8\u7f72,HTTPS\u914d\u7f6e,\u57df\u540d\u9a8c\u8bc1,OV\u8bc1\u4e66,\u901a\u914d\u7b26\u8bc1\u4e66"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12367370","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\/12367370\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12367370"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12367370"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12367370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}