{"id":12369783,"date":"2026-03-15T04:58:08","date_gmt":"2026-03-14T20:58:08","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e6%89%8b%e6%8a%8a%e6%89%8b%e6%95%99%e4%bd%a0%e5%a6%82%e4%bd%95%e7%94%b3%e8%af%b7%e4%b8%8e%e5%ae%89%e8%a3%85ssl%e8%af%81%e4%b9%a6%ef%bc%8c%e5%ae%9e%e7%8e%b0%e7%bd%91%e7%ab%99https%e5%8a%a0%e5%af%86\/"},"modified":"2026-03-15T05:03:14","modified_gmt":"2026-03-14T21:03:14","slug":"how-to-apply-and-install-ssl-certificate-for-website-https-encryption","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/how-to-apply-and-install-ssl-certificate-for-website-https-encryption\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn b\u1ea1n t\u1eebng b\u01b0\u1edbc c\u00e1ch \u0111\u0103ng k\u00fd v\u00e0 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL \u0111\u1ec3 b\u1ea3o m\u1eadt trang web b\u1eb1ng giao th\u1ee9c HTTPS"},"content":{"rendered":"<h2 class=\"wp-block-heading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL v\u00e0 c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a HTTPS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u00f4i tr\u01b0\u1eddng internet ng\u00e0y nay, t\u1ea7m quan tr\u1ecdng c\u1ee7a b\u1ea3o m\u1eadt d\u1eef li\u1ec7u l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 ph\u1ee7 nh\u1eadn. Ch\u1ee9ng ch\u1ec9 SSL l\u00e0 c\u00f4ng ngh\u1ec7 c\u1ed1t l\u00f5i \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u tr\u00ean c\u00e1c trang web s\u1eed d\u1ee5ng giao th\u1ee9c HTTPS; n\u00f3 gi\u1ed1ng nh\u01b0 m\u1ed9t \u201cchi\u1ebfc ch\u00eca kh\u00f3a k\u1ef9 thu\u1eadt s\u1ed1\u201d b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n gi\u1eefa trang web v\u00e0 ng\u01b0\u1eddi truy c\u1eadp. Khi b\u1ea1n truy c\u1eadp m\u1ed9t trang web \u0111\u00e3 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL, bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a s\u1ebd xu\u1ea5t hi\u1ec7n trong thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t, c\u00f9ng v\u1edbi ti\u1ec1n t\u1ed1 \u201chttps:\/\/\u201d, cho th\u1ea5y k\u1ebft n\u1ed1i l\u00e0 an to\u00e0n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c trang web kh\u00f4ng s\u1eed d\u1ee5ng m\u00e3 h\u00f3a HTTPS s\u1ebd truy\u1ec1n t\u1ea3i t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u, bao g\u1ed3m m\u1eadt kh\u1ea9u, s\u1ed1 th\u1ebb t\u00edn d\u1ee5ng, l\u1ecbch s\u1eed tr\u00f2 chuy\u1ec7n, v.v., d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a tr\u00ean m\u1ea1ng, khi\u1ebfn ch\u00fang r\u1ea5t d\u1ec5 b\u1ecb ng\u01b0\u1eddi kh\u00e1c theo d\u00f5i ho\u1eb7c s\u1eeda \u0111\u1ed5i. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 g\u00e2y nguy hi\u1ec3m \u0111\u1ebfn quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng m\u00e0 c\u00f2n l\u00e0m t\u1ed5n h\u1ea1i nghi\u00eam tr\u1ecdng \u0111\u1ebfn uy t\u00edn c\u1ee7a trang web. Ngo\u00e0i ra, c\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 bi\u1ebfn nh\u01b0 Chrome v\u00e0 Firefox s\u1ebd \u0111\u00e1nh d\u1ea5u c\u00e1c trang web kh\u00f4ng s\u1eed d\u1ee5ng HTTPS l\u00e0 \u201ckh\u00f4ng an to\u00e0n\u201d, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o trang web \u0111\u00f3. \u0110\u1ed1i v\u1edbi vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (SEO), HTTPS \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c x\u1ebfp h\u1ea1ng trang web; do \u0111\u00f3, vi\u1ec7c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL l\u00e0 b\u01b0\u1edbc b\u1eaft bu\u1ed9c trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh trang web.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 SSL ho\u1ea1t \u0111\u1ed9ng 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, m\u00e1y ch\u1ee7 s\u1ebd g\u1eedi ch\u1ee9ng ch\u1ec9 SSL \u0111\u1ebfn tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd. Sau khi tr\u00ecnh duy\u1ec7t x\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a ch\u1ee9ng ch\u1ec9, c\u1ea3 hai b\u00ean s\u1ebd th\u1ecfa thu\u1eadn \u0111\u1ec3 t\u1ea1o ra m\u1ed9t kh\u00f3a phi\u00ean duy nh\u1ea5t, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a to\u00e0n b\u1ed9 th\u00f4ng tin \u0111\u01b0\u1ee3c trao \u0111\u1ed5i sau \u0111\u00f3. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt, to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/en\/knowledge\/ssl-certificate\/ssl-certificate-basics-core-role-in-website-security\/\">B\u1eaft \u0111\u1ea7u t\u1eeb con s\u1ed1 kh\u00f4ng: SSL l\u00e0 g\u00ec v\u00e0 vai tr\u00f2 then ch\u1ed1t c\u1ee7a n\u00f3 trong b\u1ea3o m\u1eadt trang web<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c b\u01b0\u1edbc chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi n\u1ed9p \u0111\u01a1n xin ch\u1ee9ng ch\u1ec9 SSL<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u n\u1ed9p \u0111\u01a1n xin ch\u1ee9ng ch\u1ec9, b\u1ea1n c\u1ea7n ho\u00e0n th\u00e0nh m\u1ed9t s\u1ed1 c\u00f4ng vi\u1ec7c chu\u1ea9n b\u1ecb quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh di\u1ec5n ra su\u00f4n s\u1ebb v\u00e0 kh\u00f4ng g\u1eb7p sai s\u00f3t.<\/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\">H\u00e3y x\u00e1c \u0111\u1ecbnh r\u00f5 nhu c\u1ea7u v\u1ec1 lo\u1ea1i ch\u1ee9ng ch\u1ec9 m\u00e0 b\u1ea1n c\u1ea7n.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SSL ch\u1ee9ng ch\u1ec9 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i l\u1edbn, v\u00e0 b\u1ea1n c\u1ea7n l\u1ef1a ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean b\u1ea3n ch\u1ea5t c\u1ee7a trang web v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a m\u00ecnh. Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (Domain Validation Certificate \u2013 DV Certificate) l\u00e0 lo\u1ea1i c\u01a1 b\u1ea3n nh\u1ea5t; n\u00f3 ch\u1ec9 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n c\u1ee7a ng\u01b0\u1eddi n\u1ed9p \u0111\u01a1n v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u1ea5p trong v\u00e0i ph\u00fat, ph\u00f9 h\u1ee3p cho c\u00e1c blog c\u00e1 nh\u00e2n ho\u1eb7c m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m. Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c (Organization Validation Certificate \u2013 OV Certificate) kh\u00f4ng ch\u1ec9 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n m\u00e0 c\u00f2n ki\u1ec3m tra t\u00ednh h\u1ee3p ph\u00e1p th\u1ef1c s\u1ef1 c\u1ee7a doanh nghi\u1ec7p ho\u1eb7c t\u1ed5 ch\u1ee9c; t\u00ean c\u00f4ng ty s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean ch\u1ee9ng ch\u1ec9, gi\u00fap t\u0103ng \u0111\u1ed9 tin c\u1eady c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, ph\u00f9 h\u1ee3p cho c\u00e1c trang web ch\u00ednh th\u1ee9c c\u1ee7a doanh nghi\u1ec7p. Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c m\u1edf r\u1ed9ng (Extended Validation Certificate \u2013 EV Certificate) l\u00e0 lo\u1ea1i c\u00f3 quy tr\u00ecnh x\u00e1c minh nghi\u00eam ng\u1eb7t nh\u1ea5t v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao nh\u1ea5t; tr\u01b0\u1edbc khi c\u1ea5p, t\u1ed5 ch\u1ee9c s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng, v\u00e0 t\u00ean c\u00f4ng ty s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng m\u00e0u xanh l\u00e1 c\u00e2y tr\u1ef1c ti\u1ebfp trong thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c trang web y\u00eau c\u1ea7u b\u1ea3o m\u1eadt cao nh\u01b0 trong l\u0129nh v\u1ef1c t\u00e0i ch\u00ednh ho\u1eb7c th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chu\u1ea9n b\u1ecb \u0111\u1ea7y \u0111\u1ee7 c\u00e1c t\u00e0i li\u1ec7u x\u00e1c th\u1ef1c c\u1ea7n thi\u1ebft.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i ch\u1ee9ng ch\u1ec9 m\u00e0 b\u1ea1n ch\u1ecdn, b\u1ea1n s\u1ebd c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c t\u00e0i li\u1ec7u x\u00e1c th\u1ef1c t\u01b0\u01a1ng \u1ee9ng. \u0110\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9, b\u1ea1n ph\u1ea3i s\u1edf h\u1eefu v\u00e0 c\u00f3 quy\u1ec1n qu\u1ea3n l\u00fd c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft (DNS records) li\u00ean quan \u0111\u1ebfn t\u00ean mi\u1ec1n m\u1ee5c ti\u00eau. Th\u00f4ng th\u01b0\u1eddng, c\u01a1 quan c\u1ea5p ch\u1ee9ng ch\u1ec9 s\u1ebd x\u00e1c th\u1ef1c quy\u1ec1n s\u1edf h\u1eefu b\u1eb1ng c\u00e1ch g\u1eedi email x\u00e1c th\u1ef1c \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 email \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3, \u0111\u1eb7t t\u1ec7p x\u00e1c th\u1ef1c v\u00e0o th\u01b0 m\u1ee5c g\u1ed1c c\u1ee7a t\u00ean mi\u1ec1n, ho\u1eb7c y\u00eau c\u1ea7u th\u00eam m\u1ed9t b\u1ea3n ghi DNS nh\u1ea5t \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n mu\u1ed1n xin c\u1ea5p ch\u1ee9ng ch\u1ec9 ki\u1ec3m ch\u1ee9ng t\u1ed5 ch\u1ee9c ho\u1eb7c ch\u1ee9ng ch\u1ec9 ki\u1ec3m ch\u1ee9ng m\u1edf r\u1ed9ng, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c t\u00e0i li\u1ec7u ch\u1ee9ng minh t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a t\u1ed5 ch\u1ee9c nh\u01b0 gi\u1ea5y ph\u00e9p kinh doanh h\u1ee3p l\u1ec7, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i c\u00f4ng ty, v.v. M\u1ed9t s\u1ed1 t\u1ed5 ch\u1ee9c c\u0169ng c\u00f3 th\u1ec3 y\u00eau c\u1ea7u b\u1ea1n cung c\u1ea5p c\u00e1c t\u00e0i li\u1ec7u ph\u00e1p l\u00fd nh\u01b0 \u201cBi\u00ean b\u1ea3n \u0111\u1ed3ng \u00fd n\u1ed9p \u0111\u01a1n xin ch\u1ee9ng ch\u1ec9\u201d. Vi\u1ec7c qu\u00e9t ho\u1eb7c chu\u1ea9n b\u1ecb s\u1eb5n c\u00e1c t\u00e0i li\u1ec7u n\u00e0y d\u01b0\u1edbi d\u1ea1ng \u0111i\u1ec7n t\u1eed tr\u01b0\u1edbc s\u1ebd gi\u00fap \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh xem x\u00e9t \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1o y\u00eau c\u1ea7u k\u00fd ch\u1ee9ng ch\u1ec9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u00eau c\u1ea7u k\u00fd ch\u1ee9ng ch\u1ec9 (Certificate Signing Request \u2013 CSR) l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh n\u1ed9p \u0111\u01a1n xin c\u1ea5p ch\u1ee9ng ch\u1ec9; n\u00f3 ch\u1ee9a kh\u00f3a c\u00f4ng khai c\u1ee7a b\u1ea1n c\u00f9ng c\u00e1c th\u00f4ng tin li\u00ean quan \u0111\u1ebfn t\u1ed5 ch\u1ee9c c\u1ee7a b\u1ea1n. B\u1ea1n c\u1ea7n t\u1ea1o t\u00e0i li\u1ec7u n\u00e0y tr\u00ean m\u00e1y ch\u1ee7 n\u01a1i b\u1ea1n d\u1ef1 \u0111\u1ecbnh c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9. L\u1ea5y m\u00e1y ch\u1ee7 Linux l\u00e0m v\u00ed d\u1ee5, c\u00f4ng c\u1ee5 OpenSSL th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o kh\u00f3a ri\u00eang t\u01b0 v\u00e0 t\u1ec7p CSR. Trong qu\u00e1 tr\u00ecnh t\u1ea1o, h\u1ec7 th\u1ed1ng s\u1ebd y\u00eau c\u1ea7u b\u1ea1n nh\u1eadp c\u00e1c th\u00f4ng tin quan tr\u1ecdng nh\u01b0 qu\u1ed1c gia, t\u1ec9nh\/th\u00e0nh ph\u1ed1, t\u00ean t\u1ed5 ch\u1ee9c, v\u00e0 t\u00ean mi\u1ec1n (Domain Name \u2013 DN) m\u00e0 b\u1ea1n mu\u1ed1n m\u00e3 h\u00f3a. B\u1ea1n ph\u1ea3i l\u01b0u tr\u1eef c\u1ea9n th\u1eadn t\u1ec7p kh\u00f3a ri\u00eang t\u01b0 \u0111\u01b0\u1ee3c t\u1ea1o ra; kh\u00f3a n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u trao \u0111\u1ed5i, v\u00e0 m\u1ed9t khi b\u1ecb m\u1ea5t th\u00ec kh\u00f4ng th\u1ec3 l\u1ea5y l\u1ea1i \u0111\u01b0\u1ee3c.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/en\/knowledge\/ssl-certificate\/ssl-certificate-guide-website-security-https-access\/\">H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL: B\u1ea3o v\u1ec7 an ninh trang web v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m truy c\u1eadp qua HTTPS<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c b\u01b0\u1edbc chi ti\u1ebft \u0111\u1ec3 n\u1ed9p \u0111\u01a1n v\u00e0 nh\u1eadn ch\u1ee9ng ch\u1ec9 SSL:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b8c\u6210\u51c6\u5907\u5de5\u4f5c\u540e\uff0c\u60a8\u53ef\u4ee5\u5f00\u59cb\u5411\u8bc1\u4e66\u9881\u53d1\u673a\u6784\u7533\u8bf7\u8bc1\u4e66\u3002\u5e02\u573a\u4e0a\u6709\u8bb8\u591aCA\u673a\u6784\uff0c\u5982Let\u2018s Encrypt\u3001DigiCert\u3001Sectigo\u7b49\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u9009\u62e9\u4ed8\u8d39\u6216\u514d\u8d39\u7684\u8bc1\u4e66\u670d\u52a1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ecdn c\u01a1 quan c\u1ea5p ch\u1ee9ng ch\u1ec9 v\u00e0 n\u1ed9p \u0111\u01a1n xin c\u1ea5p ch\u1ee9ng ch\u1ec9.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u60a8\u662f\u4e2a\u4eba\u7528\u6237\u6216\u5c0f\u578b\u7f51\u7ad9\uff0cLet\u2018s Encrypt\u63d0\u4f9b\u7684\u514d\u8d39\u3001\u81ea\u52a8\u5316\u7684\u8bc1\u4e66\u670d\u52a1\u662f\u4e00\u4e2a\u6781\u4f73\u7684\u9009\u62e9\u3002\u5b83\u901a\u8fc7ACME\u534f\u8bae\u81ea\u52a8\u9a8c\u8bc1\u57df\u540d\u5e76\u9881\u53d1\u4e3a\u671f90\u5929\u7684\u8bc1\u4e66\uff0c\u53ef\u4ee5\u901a\u8fc7Certbot\u7b49\u5de5\u5177\u81ea\u52a8\u7eed\u671f\u3002\u5bf9\u4e8e\u5546\u4e1a\u7f51\u7ad9\uff0c\u5efa\u8bae\u9009\u62e9\u77e5\u540d\u7684\u4ed8\u8d39CA\uff0c\u5b83\u4eec\u63d0\u4f9b\u66f4\u5b8c\u5584\u7684\u4fdd\u969c\u3001\u6280\u672f\u652f\u6301\u4ee5\u53ca\u66f4\u957f\u7684\u6709\u6548\u671f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi ch\u1ecdn \u0111\u01a1n v\u1ecb cung c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority), h\u00e3y truy c\u1eadp trang web ch\u00ednh th\u1ee9c c\u1ee7a h\u1ecd, ch\u1ecdn lo\u1ea1i s\u1ea3n ph\u1ea9m v\u00e0 th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c c\u1ee7a ch\u1ee9ng ch\u1ec9, sau \u0111\u00f3 b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh n\u1ed9p \u0111\u01a1n. B\u1ea1n c\u1ea7n sao ch\u00e9p to\u00e0n b\u1ed9 n\u1ed9i dung t\u1ec7p CSR (Certificate Signing Request) \u0111\u00e3 t\u1ea1o tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 d\u00e1n n\u00f3 v\u00e0o v\u1ecb tr\u00ed \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u tr\u00ean trang n\u1ed9p \u0111\u01a1n. Ti\u1ebfp theo, t\u00f9y theo lo\u1ea1i ch\u1ee9ng ch\u1ec9, h\u00e3y ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p v\u00e0 ho\u00e0n t\u1ea5t c\u00e1c b\u01b0\u1edbc c\u1ea7n thi\u1ebft. N\u1ebfu ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c qua DNS, b\u1ea1n c\u1ea7n \u0111\u0103ng nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh v\u00e0 th\u00eam m\u1ed9t b\u1ea3n ghi TXT theo h\u01b0\u1edbng d\u1eabn c\u1ee7a \u0111\u01a1n v\u1ecb cung c\u1ea5p ch\u1ee9ng ch\u1ec9. Qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c th\u01b0\u1eddng m\u1ea5t t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd.<\/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<h3 class=\"wp-block-heading\">Ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c v\u00e0 t\u1ea3i xu\u1ed1ng t\u1ec7p ch\u1ee9ng ch\u1ec9.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi vi\u1ec7c x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c ho\u00e0n t\u1ea5t, \u0111\u1ed1i v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 DV (Domain Validation), t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority) s\u1ebd nhanh ch\u00f3ng c\u1ea5p ch\u1ee9ng ch\u1ec9 cho b\u1ea1n. \u0110\u1ed1i v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 OV (Organizational Validation) ho\u1eb7c EV (Extended Validation), nh\u00f3m \u0111\u00e1nh gi\u00e1 c\u1ee7a CA s\u1ebd ti\u1ebfn h\u00e0nh ki\u1ec3m tra th\u1ee7 c\u00f4ng d\u1ef1a tr\u00ean c\u00e1c t\u00e0i li\u1ec7u t\u1ed5 ch\u1ee9c m\u00e0 b\u1ea1n \u0111\u00e3 n\u1ed9p; qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 m\u1ea5t t\u1eeb 1 \u0111\u1ebfn 5 ng\u00e0y l\u00e0m vi\u1ec7c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea3i g\u00f3i t\u00e0i li\u1ec7u ch\u1ee9a ch\u1ee9ng ch\u1ec9 SSL t\u1eeb h\u1ec7 th\u1ed1ng qu\u1ea3n tr\u1ecb do CA cung c\u1ea5p. Th\u00f4ng th\u01b0\u1eddng, g\u00f3i t\u00e0i li\u1ec7u n\u00e0y bao g\u1ed3m m\u1ed9t s\u1ed1 t\u1ec7p quan tr\u1ecdng: t\u1ec7p ch\u1ee9ng ch\u1ec9 ch\u00ednh c\u1ee7a trang web c\u1ee7a b\u1ea1n, t\u1ec7p ch\u1ee9ng ch\u1ec9 trung gian c\u1ee7a CA, v\u00e0 \u0111\u00f4i khi c\u1ea3 t\u1ec7p ch\u1ee9ng ch\u1ec9 g\u1ed1c. H\u00e3y \u0111\u1ea3m b\u1ea3o t\u1ea3i v\u1ec1 to\u00e0n b\u1ed9 chu\u1ed7i ch\u1ee9ng ch\u1ec9; \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t sau n\u00e0y. \u0110\u1ed3ng th\u1eddi, h\u00e3y ki\u1ec3m tra l\u1ea1i m\u1ed9t l\u1ea7n n\u1eefa \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n v\u1eabn s\u1edf h\u1eefu v\u00e0 \u0111\u00e3 sao l\u01b0u t\u1ec7p kh\u00f3a ri\u00eang (private key) \u0111\u01b0\u1ee3c t\u1ea1o ra khi th\u1ef1c hi\u1ec7n thao t\u00e1c t\u1ea1o CSR (Certificate Request).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL trong m\u00f4i tr\u01b0\u1eddng ch\u00ednh th\u1ed1ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi b\u1ea1n l\u1ea5y \u0111\u01b0\u1ee3c t\u1ec7p ch\u1ee9ng ch\u1ec9, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 c\u00e0i \u0111\u1eb7t n\u00f3 l\u00ean m\u00e1y ch\u1ee7 web c\u1ee7a m\u00ecnh. C\u00e1ch c\u00e0i \u0111\u1eb7t c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo lo\u1ea1i m\u00e1y ch\u1ee7.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/en\/knowledge\/ssl-certificate\/what-is-ssl-certificate-https-encryption-guide-for-website-security\/\">SSL (Secure Sockets Layer) l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng giao th\u1ee9c m\u00e3 h\u00f3a HTTPS \u0111\u1ec3 b\u1ea3o m\u1eadt trang web.<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 tr\u00ean m\u00e1y ch\u1ee7 Apache<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Apache l\u00e0 m\u1ed9t trong nh\u1eefng m\u00e1y ch\u1ee7 web \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. Tr\u01b0\u1edbc ti\u00ean, h\u00e3y k\u1ebft n\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n b\u1eb1ng c\u00f4ng c\u1ee5 SSH. Sau \u0111\u00f3, h\u00e3y \u0111\u01b0a t\u1ec7p ch\u1ee9ng ch\u1ec9 \u0111\u00e3 t\u1ea3i v\u1ec1 v\u00e0o m\u1ed9t th\u01b0 m\u1ee5c an to\u00e0n tr\u00ean m\u00e1y ch\u1ee7, v\u00ed d\u1ee5 nh\u01b0: <code data-no-auto-translation=\"\">\/etc\/ssl\/<\/code>Sau \u0111\u00f3, h\u00e3y ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u1ea3o (virtual host) c\u1ee7a trang web c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u00ecm \u0111o\u1ea1n c\u1ea5u h\u00ecnh li\u00ean quan \u0111\u1ebfn vi\u1ec7c l\u1eafng nghe tr\u00ean c\u1ed5ng 443, v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00f4ng c\u1ee5 SSL \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ch\u1ec9 \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn ch\u1ee9ng ch\u1ec9 v\u00e0 kh\u00f3a ri\u00eang t\u01b0. B\u1ea1n c\u1ea7n s\u1eeda \u0111\u1ed5i ho\u1eb7c th\u00eam c\u00e1c d\u00f2ng l\u1ec7nh sau:<code data-no-auto-translation=\"\">SSLCertificateFile<\/code> \u0110\u00e2y l\u00e0 \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn t\u1ec7p ch\u1ee9ng ch\u1ec9 ch\u00ednh c\u1ee7a b\u1ea1n.<code data-no-auto-translation=\"\">SSLCertificateKeyFile<\/code> \u0110\u00e2y l\u00e0 \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn t\u1ec7p ch\u1ee9a kh\u00f3a ri\u00eang c\u1ee7a b\u1ea1n.<code data-no-auto-translation=\"\">SSLCertificateChainFile<\/code> \u0110\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch ch\u1ec9 \u0111\u1ecbnh t\u1ec7p ch\u1ee9a ch\u1ee9ng ch\u1ec9 trung gian (intermediate certificate file). Sau khi ho\u00e0n t\u1ea5t vi\u1ec7c c\u1ea5u h\u00ecnh, h\u00e3y l\u01b0u t\u1ec7p l\u1ea1i v\u00e0 s\u1eed d\u1ee5ng l\u1ec7nh \u0111\u1ec3 ki\u1ec3m tra xem c\u00fa ph\u00e1p c\u00f3 \u0111\u00fang kh\u00f4ng. Khi \u0111\u00e3 ch\u1eafc ch\u1eafn r\u1eb1ng m\u1ecdi th\u1ee9 \u0111\u1ec1u \u1ed5n, h\u00e3y kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 tr\u00ean m\u00e1y ch\u1ee7 Nginx<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nginx n\u1ed5i ti\u1ebfng v\u1edbi hi\u1ec7u su\u1ea5t cao, v\u00e0 vi\u1ec7c c\u1ea5u h\u00ecnh ch\u1ee9ng ch\u1ec9 SSL c\u0169ng r\u1ea5t \u0111\u01a1n gi\u1ea3n. B\u1ea1n ch\u1ec9 c\u1ea7n t\u1ea3i t\u1ec7p ch\u1ee9ng ch\u1ec9 v\u00e0 t\u1ec7p kh\u00f3a ri\u00eang l\u00ean m\u00e1y ch\u1ee7 l\u00e0 \u0111\u01b0\u1ee3c. <code data-no-auto-translation=\"\">\/etc\/nginx\/ssl\/<\/code> Trong th\u01b0 m\u1ee5c \u0111\u00f3, h\u00e3y ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh Nginx c\u1ee7a trang web c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong t\u1ec7p c\u1ea5u h\u00ecnh, h\u00e3y t\u00ecm ph\u1ea7n li\u00ean quan \u0111\u1ebfn m\u00e1y ch\u1ee7 (server block), sau \u0111\u00f3 th\u00eam m\u1ed9t ph\u1ea7n m\u00e1y ch\u1ee7 m\u1edbi \u0111\u1ec3 l\u1eafng nghe tr\u00ean c\u1ed5ng 443. B\u00ean trong ph\u1ea7n n\u00e0y, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft l\u1eadp c\u1ea7n thi\u1ebft. <code data-no-auto-translation=\"\">ssl_certificate<\/code> L\u1ec7nh ch\u1ec9 \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1edbi t\u1ec7p ch\u1ee9ng ch\u1ec9; h\u00e3y s\u1eed d\u1ee5ng n\u00f3. <code data-no-auto-translation=\"\">ssl_certificate_key<\/code> L\u1ec7nh n\u00e0y ch\u1ec9 \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1edbi t\u1ec7p ch\u1ee9a kh\u00f3a ri\u00eang (private key). C\u00f3 m\u1ed9t m\u1eb9o quan tr\u1ecdng \u1edf \u0111\u00e2y: \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch, b\u1ea1n c\u1ea7n k\u1ebft h\u1ee3p ch\u1ee9ng ch\u1ec9 ch\u00ednh (main certificate) v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 trung gian (intermediate certificates) th\u00e0nh m\u1ed9t t\u1ec7p duy nh\u1ea5t. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh \u0111\u1ec3 k\u1ebft h\u1ee3p n\u1ed9i dung c\u1ee7a c\u1ea3 hai t\u1ec7p theo th\u1ee9 t\u1ef1, sau \u0111\u00f3\u2026 <code data-no-auto-translation=\"\">ssl_certificate<\/code> H\u00e3y tr\u1ecf \u0111\u1ebfn t\u1ec7p tin \u0111\u00e3 \u0111\u01b0\u1ee3c h\u1ee3p nh\u1ea5t n\u00e0y. \u0110\u1ed3ng th\u1eddi, h\u00e3y ki\u1ec3m tra l\u1ea1i c\u00fa ph\u00e1p c\u1ea5u h\u00ecnh v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 Nginx.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 tr\u00ean m\u00e1y ch\u1ee7 \u1ea3o trong \u0111\u00e1m m\u00e2y<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 \u1ea3o th\u00f4ng qua c\u00e1c panel nh\u01b0 cPanel ho\u1eb7c Plesk, qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t th\u01b0\u1eddng s\u1ebd di\u1ec5n ra theo giao di\u1ec7n \u0111\u1ed3 h\u1ecda. H\u00e3y \u0111\u0103ng nh\u1eadp v\u00e0o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a m\u00e1y ch\u1ee7 \u1ea3o c\u1ee7a b\u1ea1n v\u00e0 t\u00ecm m\u00f4-\u0111un ch\u1ee9c n\u0103ng li\u00ean quan \u0111\u1ebfn \u201cSSL\/TLS\u201d ho\u1eb7c \u201cB\u1ea3o m\u1eadt\u201d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng th\u01b0\u1eddng, s\u1ebd c\u00f3 c\u00e1c t\u00f9y ch\u1ecdn nh\u01b0 \u201cQu\u1ea3n l\u00fd trang web SSL\u201d ho\u1eb7c \u201cC\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL\u201d. Sau khi nh\u1ea5p v\u00e0o t\u00f9y ch\u1ecdn ph\u00f9 h\u1ee3p, h\u00e3y ch\u1ecdn t\u00ean mi\u1ec1n m\u00e0 b\u1ea1n mu\u1ed1n c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9. Trong c\u00e1c \u00f4 v\u0103n b\u1ea3n t\u01b0\u01a1ng \u1ee9ng, h\u00e3y d\u00e1n kh\u00f3a ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n, n\u1ed9i dung ch\u1ee9ng ch\u1ec9 ch\u00ednh v\u00e0 n\u1ed9i dung ch\u1ee9ng ch\u1ec9 trung gian v\u00e0o \u0111\u00f3. Khi d\u00e1n, h\u00e3y \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 kho\u1ea3ng tr\u1eafng ho\u1eb7c l\u1ed7i thay \u0111\u1ed5i d\u00f2ng n\u00e0o kh\u00f4ng c\u1ea7n thi\u1ebft. Sau khi ho\u00e0n t\u1ea5t vi\u1ec7c d\u00e1n, h\u00e3y nh\u1ea5p v\u00e0o n\u00fat \u201cC\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9\u201d ho\u1eb7c \u201cG\u1eedi\u201d. H\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n c\u00e1c thi\u1ebft l\u1eadp c\u1ea7n thi\u1ebft. Khi qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t ho\u00e0n t\u1ea5t th\u00e0nh c\u00f4ng, b\u1ea1n s\u1ebd c\u00f3 th\u1ec3 truy c\u1eadp trang web c\u1ee7a m\u00ecnh th\u00f4ng qua giao th\u1ee9c HTTPS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ki\u1ec3m th\u1eed v\u00e0 t\u1ed1i \u01b0u h\u00f3a sau khi c\u00e0i \u0111\u1eb7t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c ho\u00e0n t\u1ea5t, c\u00f4ng vi\u1ec7c v\u1eabn ch\u01b0a k\u1ebft th\u00fac. C\u1ea7n ti\u1ebfn h\u00e0nh c\u00e1c b\u01b0\u1edbc ki\u1ec3m th\u1eed v\u00e0 t\u1ed1i \u01b0u h\u00f3a to\u00e0n di\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ki\u1ec3m tra qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi truy c\u1eadp trang web c\u1ee7a b\u1ea1n, h\u00e3y ki\u1ec3m tra xem li\u1ec7u thanh \u0111\u1ecba ch\u1ec9 tr\u00ecnh duy\u1ec7t c\u00f3 hi\u1ec3n th\u1ecb bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a hay kh\u00f4ng. \u0110\u00e2y ch\u1ec9 l\u00e0 b\u01b0\u1edbc ki\u1ec3m tra s\u01a1 b\u1ed9. \u0110\u1ec3 ti\u1ebfn h\u00e0nh ki\u1ec3m tra chuy\u00ean nghi\u1ec7p h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 ki\u1ec3m tra SSL tr\u1ef1c tuy\u1ebfn mi\u1ec5n ph\u00ed. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y s\u1ebd qu\u00e9t trang web c\u1ee7a b\u1ea1n t\u1eeb xa v\u00e0 cung c\u1ea5p b\u00e1o c\u00e1o chi ti\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e1o c\u00e1o s\u1ebd hi\u1ec3n th\u1ecb th\u00f4ng tin v\u1ec1 vi\u1ec7c ch\u1ee9ng ch\u1ec9 c\u00f3 hi\u1ec7u l\u1ef1c hay kh\u00f4ng, li\u1ec7u ch\u1ee9ng ch\u1ec9 \u0111\u00f3 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, xem chu\u1ed7i ch\u1ee9ng ch\u1ec9 c\u00f3 \u0111\u1ea7y \u0111\u1ee7 c\u00e1c ch\u1ee9ng ch\u1ec9 c\u1ea7n thi\u1ebft hay kh\u00f4ng, li\u1ec7u c\u00e1c b\u1ed9 m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 c\u00f3 an to\u00e0n hay kh\u00f4ng, v\u00e0 li\u1ec7u c\u00f3 b\u1ea5t k\u1ef3 l\u1ed7 h\u1ed5ng n\u00e0o \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn hay kh\u00f4ng. Vui l\u00f2ng \u0111\u1ecdc b\u00e1o c\u00e1o k\u1ef9 l\u01b0\u1ee1ng v\u00e0 kh\u1eafc ph\u1ee5c b\u1ea5t k\u1ef3 v\u1ea5n \u0111\u1ec1 n\u00e0o theo c\u00e1c khuy\u1ebfn ngh\u1ecb \u0111\u01b0\u1ee3c \u0111\u01b0a ra, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c giao th\u1ee9c<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u1ea5u h\u00ecnh chuy\u1ec3n h\u01b0\u1edbng t\u1eeb HTTP sang HTTPS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec1u truy c\u1eadp v\u00e0o trang web th\u00f4ng qua k\u1ebft n\u1ed1i HTTPS an to\u00e0n v\u00e0 tr\u00e1nh t\u00ecnh tr\u1ea1ng n\u1ed9i dung tr\u00f9ng l\u1eb7p g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 SEO, t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng HTTP c\u1ea7n \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng (redirect) sang HTTPS. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eeda \u0111\u1ed5i t\u1ec7p c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong Apache, b\u1ea1n c\u00f3 th\u1ec3 th\u00eam c\u00e1c quy t\u1eafc \u0111\u1ecbnh tuy\u1ebfn (rewrite rules) v\u00e0o t\u1ec7p c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u1ea3o (virtual host configuration file) c\u1ee7a trang web \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn c\u1ed5ng 80 sang \u0111\u1ecba ch\u1ec9 HTTPS t\u01b0\u01a1ng \u1ee9ng m\u1ed9t c\u00e1ch v\u0129nh vi\u1ec5n. Trong Nginx, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh `return` trong kh\u1ed1i m\u00e1y ch\u1ee7 l\u1eafng nghe c\u1ed5ng 80 \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c chuy\u1ec3n h\u01b0\u1edbng t\u01b0\u01a1ng t\u1ef1. Sau khi ho\u00e0n t\u1ea5t c\u1ea5u h\u00ecnh, d\u00f9 ng\u01b0\u1eddi d\u00f9ng nh\u1eadp \u0111\u1ecba ch\u1ec9 HTTP hay HTTPS, h\u1ecd \u0111\u1ec1u s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 HTTPS m\u1ed9t c\u00e1ch an to\u00e0n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Thi\u1ebft l\u1eadp t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n ch\u1ee9ng ch\u1ec9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SSL\u8bc1\u4e66\u90fd\u6709\u6709\u6548\u671f\uff0c\u8fc7\u671f\u540e\u7f51\u7ad9\u5c06\u65e0\u6cd5\u6b63\u5e38\u901a\u8fc7HTTPS\u8bbf\u95ee\uff0c\u5e76\u4f1a\u663e\u793a\u5b89\u5168\u8b66\u544a\u3002\u56e0\u6b64\uff0c\u8bbe\u7f6e\u81ea\u52a8\u7eed\u671f\u81f3\u5173\u91cd\u8981\u3002\u5bf9\u4e8eLet\u2018s Encrypt\u8bc1\u4e66\uff0c\u5176Certbot\u5ba2\u6237\u7aef\u672c\u8eab\u5c31\u652f\u6301\u81ea\u52a8\u7eed\u671f\uff0c\u901a\u5e38\u53ea\u9700\u4e00\u6761\u7b80\u5355\u7684\u8ba1\u5212\u4efb\u52a1\u547d\u4ee4\u5373\u53ef\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 c\u00f3 ph\u00ed, m\u1eb7c d\u00f9 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng c\u1ee7a ch\u00fang kh\u00e1 d\u00e0i, b\u1ea1n v\u1eabn kh\u00f4ng n\u00ean b\u1ecf qua vi\u1ec7c qu\u1ea3n l\u00fd ch\u00fang. Nhi\u1ec1u t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authorities) cung c\u1ea5p d\u1ecbch v\u1ee5 nh\u1eafc nh\u1edf t\u1ef1 \u0111\u1ed9ng v\u1ec1 vi\u1ec7c gia h\u1ea1n; v\u00ec v\u1eady h\u00e3y \u0111\u1ea3m b\u1ea3o k\u00edch ho\u1ea1t t\u00ednh n\u0103ng n\u00e0y khi \u0111\u0103ng k\u00fd ch\u1ee9ng ch\u1ec9. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp l\u1eddi nh\u1eafc trong l\u1ecbch \u0111\u1ec3 t\u1ef1 th\u1ef1c hi\u1ec7n th\u1ee7 t\u1ee5c gia h\u1ea1n v\u00e0 c\u00e0i \u0111\u1eb7t l\u1ea1i ch\u1ee9ng ch\u1ec9 kho\u1ea3ng m\u1ed9t th\u00e1ng tr\u01b0\u1edbc khi n\u00f3 h\u1ebft h\u1ea1n. M\u1ed9t s\u1ed1 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n l\u00fd m\u00e1y ch\u1ee7 hi\u1ec7n \u0111\u1ea1i c\u0169ng h\u1ed7 tr\u1ee3 ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t<\/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 v\u00e0 n\u00e2ng c\u1ea5p trang web t\u1eeb HTTP l\u00ean HTTPS kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t t\u00f9y ch\u1ecdn n\u1eefa, m\u00e0 \u0111\u00e3 tr\u1edf th\u00e0nh n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n cho vi\u1ec7c v\u1eadn h\u00e0nh an to\u00e0n c\u00e1c trang web hi\u1ec7n \u0111\u1ea1i. Quy tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft nh\u01b0 sau: x\u00e1c \u0111\u1ecbnh r\u00f5 nhu c\u1ea7u, chu\u1ea9n b\u1ecb c\u00e1c t\u00e0i li\u1ec7u c\u1ea7n thi\u1ebft, t\u1ea1o file CSR (Certificate Signing Request), ch\u1ecdn t\u1ed5 ch\u1ee9c c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA \u2013 Certificate Authority) v\u00e0 g\u1eedi y\u00eau c\u1ea7u x\u00e1c th\u1ef1c, t\u1ea3i ch\u1ee9ng ch\u1ec9 v\u1ec1, c\u00e0i \u0111\u1eb7t v\u00e0 thi\u1ebft l\u1eadp tr\u00ean m\u00e1y ch\u1ee7, sau \u0111\u00f3 ti\u1ebfn h\u00e0nh c\u00e1c b\u01b0\u1edbc ki\u1ec3m th\u1eed k\u1ef9 l\u01b0\u1ee1ng v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh. M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u b\u01b0\u1edbc, nh\u01b0ng m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u c\u00f3 h\u01b0\u1edbng d\u1eabn r\u00f5 r\u00e0ng v\u00e0 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi nhi\u1ec1u c\u00f4ng c\u1ee5 h\u1eefu \u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e0\u8bba\u662f\u9009\u62e9\u514d\u8d39\u7684Let\u2018s Encrypt\u81ea\u52a8\u5316\u65b9\u6848\uff0c\u8fd8\u662f\u91c7\u7528\u4ed8\u8d39\u7684\u4f01\u4e1a\u7ea7\u8bc1\u4e66\uff0c\u6838\u5fc3\u76ee\u6807\u90fd\u662f\u4e3a\u7528\u6237\u6784\u5efa\u4e00\u4e2a\u53ef\u4fe1\u3001\u5b89\u5168\u7684\u8fde\u63a5\u901a\u9053\u3002\u6210\u529f\u90e8\u7f72HTTPS\u4e0d\u4ec5\u80fd\u6709\u6548\u4fdd\u62a4\u7528\u6237\u6570\u636e\uff0c\u9632\u6b62\u4fe1\u606f\u6cc4\u9732\u548c\u7be1\u6539\uff0c\u66f4\u80fd\u663e\u8457\u63d0\u5347\u7f51\u7ad9\u7684\u4e13\u4e1a\u5f62\u8c61\u548c\u641c\u7d22\u5f15\u64ce\u4e2d\u7684\u53ef\u89c1\u5ea6\uff0c\u4e3a\u7f51\u7ad9\u7684\u957f\u671f\u53d1\u5c55\u5960\u5b9a\u575a\u5b9e\u7684\u5b89\u5168\u57fa\u7840\u3002<\/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\">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\">C\u00e1c ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed kh\u00f4ng kh\u00e1c g\u00ec ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng m\u00e3 h\u00f3a c\u1ed1t l\u00f5i \u2013 c\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u theo giao th\u1ee9c HTTPS. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf c\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung v\u00e0 d\u1ecbch v\u1ee5 \u0111i k\u00e8m. Ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed th\u01b0\u1eddng ch\u1ec9 c\u00f3 ch\u1ee9c n\u0103ng x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (domain validation), c\u00f3 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng ng\u1eafn, c\u1ea7n \u0111\u01b0\u1ee3c gia h\u1ea1n th\u01b0\u1eddng xuy\u00ean, v\u00e0 th\u01b0\u1eddng kh\u00f4ng c\u00f3 s\u1ef1 \u0111\u1ea3m b\u1ea3o v\u1ec1 m\u1eb7t t\u00e0i ch\u00ednh. Ng\u01b0\u1ee3c l\u1ea1i, ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed cung c\u1ea5p d\u1ecbch v\u1ee5 x\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c (organization validation) ho\u1eb7c x\u00e1c th\u1ef1c m\u1edf r\u1ed9ng (extended validation), gi\u00fap th\u1ec3 hi\u1ec7n th\u00f4ng tin v\u1ec1 doanh nghi\u1ec7p v\u00e0 t\u1ea1o s\u1ef1 tin t\u01b0\u1edfng cao h\u01a1n cho ng\u01b0\u1eddi d\u00f9ng; ch\u00fang c\u00f3 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng d\u00e0i h\u01a1n, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt t\u1ed1t h\u01a1n, v\u00e0 \u0111i k\u00e8m v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o hi\u1ec3m \u0111\u1ec3 b\u00f9<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vi\u1ec7c c\u00e0i \u0111\u1eb7t 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 m\u00e3 h\u00f3a HTTPS th\u1ef1c s\u1ef1 s\u1ebd g\u00e2y ra m\u1ed9t s\u1ed1 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u n\u0103ng, do m\u00e1y ch\u1ee7 v\u00e0 tr\u00ecnh duy\u1ec7t ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c giao ti\u1ebfp SSL c\u0169ng nh\u01b0 c\u00e1c thao t\u00e1c m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u. 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, nh\u1eefng t\u00e1c \u0111\u1ed9ng n\u00e0y \u0111\u00e3 tr\u1edf n\u00ean r\u1ea5t nh\u1ecf, v\u00e0 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u00f9 \u0111\u1eafp th\u00f4ng qua c\u00e1c bi\u1ec7n ph\u00e1p t\u1ed1i \u01b0u h\u00f3a kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u00edch ho\u1ea1t giao th\u1ee9c HTTP\/2, vi\u1ec7c s\u1eed d\u1ee5ng HTTPS tr\u1edf th\u00e0nh b\u1eaft bu\u1ed9c, t\u1eeb \u0111\u00f3 gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web. Ngo\u00e0i ra, c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 kh\u00f4i ph\u1ee5c th\u00f4ng tin phi\u00ean (session recovery) v\u00e0 x\u00e1c th\u1ef1c ch\u1eef k\u00fd s\u1ed1 (OCSP binding) c\u0169ng gi\u00fap gi\u1ea3m \u0111\u1ed9 tr\u1ec5 trong qu\u00e1 tr\u00ecnh k\u1ebft n\u1ed1i (handshake). Nh\u00ecn chung, l\u1ee3i \u00edch t\u1eeb vi\u1ec7c n\u00e2ng cao m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi nh\u1eefng chi ph\u00ed hi\u1ec7u n\u0103ng nh\u1ecf c\u00f3 th\u1ec3 x\u1ea3y ra v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn 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 (%s, %1$s, {{var}})?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu doanh nghi\u1ec7p c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng nhi\u1ec1u t\u00ean mi\u1ec1n ho\u00e0n to\u00e0n kh\u00e1c nhau (v\u00ed d\u1ee5: m\u1ed9t trang web ch\u00ednh v\u00e0 m\u1ed9t trang web th\u01b0\u01a1ng m\u1ea1i \u0111\u1ed9c l\u1eadp), th\u00ec vi\u1ec7c ch\u1ecdn s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 \u0111a t\u00ean mi\u1ec1n l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p. Ch\u1ee9ng ch\u1ec9 \u0111a t\u00ean mi\u1ec1n cho ph\u00e9p b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong c\u00f9ng m\u1ed9t ch\u1ee9ng ch\u1ec9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu doanh nghi\u1ec7p c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh (root domain) k\u00e8m theo nhi\u1ec1u t\u00ean mi\u1ec1n con c\u00f9ng c\u1ea5p, th\u00ec ch\u1ee9ng ch\u1ec9 ch\u1ee9a k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (wildcard certificate) l\u00e0 l\u1ef1a ch\u1ecdn ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t. Ch\u1ec9 c\u1ea7n m\u1ed9t ch\u1ee9ng ch\u1ec9 duy nh\u1ea5t l\u00e0 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 c\u1ea3 t\u00ean mi\u1ec1n ch\u00ednh v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n con \u0111\u00f3. B\u1ea1n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn lo\u1ea1i ch\u1ee9ng ch\u1ec9 ph\u00f9 h\u1ee3p v\u1edbi c\u1ea5u tr\u00fac doanh nghi\u1ec7p c\u1ee7a m\u00ecnh, ho\u1eb7c th\u1eadm ch\u00ed k\u1ebft h\u1ee3p<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sau khi c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9, tr\u00ecnh duy\u1ec7t v\u1eabn b\u00e1o l\u1ed7i \u201ckh\u00f4ng an to\u00e0n\u201d. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 kh\u1eafc ph\u1ee5c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra do m\u1ed9t s\u1ed1 l\u00fd do ph\u1ed5 bi\u1ebfn. Tr\u01b0\u1edbc h\u1ebft, h\u00e3y ki\u1ec3m tra xem trang web c\u00f3 \u0111ang t\u1ea3i \u0111\u1ed3ng th\u1eddi c\u00e1c t\u00e0i nguy\u00ean HTTP (nh\u01b0 h\u00ecnh \u1ea3nh, script, b\u1ea3ng \u0111\u1ecbnh d\u1ea1ng) hay kh\u00f4ng. Tr\u00ecnh duy\u1ec7t c\u00f3 th\u1ec3 coi trang web l\u00e0 \u201ckh\u00f4ng an to\u00e0n\u201d v\u00e0 y\u00eau c\u1ea7u thay t\u1ea5t c\u1ea3 c\u00e1c li\u00ean k\u1ebft \u0111\u1ebfn nh\u1eefng t\u00e0i nguy\u00ean n\u00e0y th\u00e0nh li\u00ean k\u1ebft HTTPS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ee9 hai, c\u00f3 th\u1ec3 l\u00e0 chu\u1ed7i ch\u1ee9ng ch\u1ec9 kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7; m\u00e1y ch\u1ee7 kh\u00f4ng g\u1eedi \u0111\u00fang c\u00e1c ch\u1ee9ng ch\u1ec9 trung gian. Vui l\u00f2ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n \u0111\u00e3 c\u00e0i \u0111\u1eb7t \u0111\u1ea7y \u0111\u1ee7 chu\u1ed7i ch\u1ee9ng ch\u1ec9 trong c\u1ea5u h\u00ecnh c\u1ee7a m\u00ecnh. Cu\u1ed1i c\u00f9ng, h\u00e3y ki\u1ec3m tra xem m\u00e1y ch\u1ee7 v\u1eabn \u0111ang l\u1eafng nghe tr\u00ean c\u1ed5ng HTTP hay kh\u00f4ng, v\u00e0 li\u1ec7u n\u00f3 c\u00f3 th\u1ef1c hi\u1ec7n vi\u1ec7c chuy\u1ec3n h\u01b0\u1edbng (redirect) \u0111\u00fang c\u00e1ch hay kh\u00f4ng; \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng v\u1eabn truy c\u1eadp v\u00e0o c\u00e1c trang web d\u1ea1ng HTTP. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp \u1edf ph\u1ea7n tr\u00ean \u0111\u1ec3 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3.<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng v\u1ec1 t\u1ea7m quan tr\u1ecdng v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p h\u01b0\u1edbng d\u1eabn chi ti\u1ebft t\u1eeb c\u00e1c b\u01b0\u1edbc chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi n\u1ed9p \u0111\u01a1n (x\u00e1c \u0111\u1ecbnh lo\u1ea1i ch\u1ee9ng ch\u1ec9, chu\u1ea9n b\u1ecb t\u00e0i li\u1ec7u c\u1ea7n thi\u1ebft, t\u1ea1o t\u1ec7p CSR \u2013 Certificate Signing Request) \u0111\u1ebfn vi\u1ec7c y\u00eau c\u1ea7u CA (Certificate Authority) x\u00e1c th\u1ef1c ch\u1ee9ng ch\u1ec9, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 c\u00e1ch c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 nh\u01b0 Apache nh\u1eb1m gi\u00fap qu\u1ea3n tr\u1ecb vi\u00ean trang web tri\u1ec3n khai ch\u1ee9c n\u0103ng m\u00e3 h\u00f3a an to\u00e0n b\u1eb1ng giao th\u1ee9c HTTPS.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[341,368,11,329,319],"knowledge_category":[277],"class_list":["post-12369783","knowledge_post","type-knowledge_post","status-publish","hentry","tag-https-encryption","tag-seo-optimization","tag-ssl-certificate","tag-data-encryption","tag-website-security","knowledge_category-ssl-certificate"],"acf":{"site_seo_keywords":"SSL\u8bc1\u4e66\u7533\u8bf7,HTTPS\u52a0\u5bc6\u5b89\u88c5,\u7f51\u7ad9\u5b89\u5168\u914d\u7f6e,SSL\u8bc1\u4e66\u7c7b\u578b,\u57df\u540d\u9a8c\u8bc1,Apache\u5b89\u88c5SSL,\u8bc1\u4e66\u7b7e\u540d\u8bf7\u6c42,\u514d\u8d39SSL\u8bc1\u4e66"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12369783","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\/12369783\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12369783"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12369783"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12369783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}