{"id":12360104,"date":"2026-03-11T01:25:23","date_gmt":"2026-03-10T17:25:23","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/ssl%e8%af%81%e4%b9%a6%ef%bc%9a%e4%bf%9d%e9%9a%9c%e7%bd%91%e7%ab%99%e6%95%b0%e6%8d%ae%e5%ae%89%e5%85%a8%e4%bc%a0%e8%be%93%e7%9a%84%e5%8a%a0%e5%af%86%e5%9f%ba%e7%9f%b3\/"},"modified":"2026-03-11T03:10:36","modified_gmt":"2026-03-10T19:10:36","slug":"ssl-certificate-encryption-website-data-security","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-encryption-website-data-security\/","title":{"rendered":"Ch\u1ee9ng ch\u1ec9 SSL: n\u1ec1n t\u1ea3ng m\u00e3 h\u00f3a \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u tr\u00ean website \u0111\u01b0\u1ee3c truy\u1ec1n an to\u00e0n"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Principle and Function of SSL Certificate<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 SSL, hay c\u00f2n g\u1ecdi l\u00e0 ch\u1ee9ng ch\u1ec9 l\u1edbp b\u1ea3o m\u1eadt, l\u00e0 m\u1ed9t lo\u1ea1i ch\u1ee9ng ch\u1ec9 s\u1ed1 tu\u00e2n th\u1ee7 giao th\u1ee9c SSL\/TLS. Vai tr\u00f2 ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 m\u00e3 h\u00f3a li\u00ean l\u1ea1c gi\u1eefa trang web v\u00e0 ng\u01b0\u1eddi d\u00f9ng, x\u00e1c th\u1ef1c danh t\u00ednh v\u00e0 b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u. Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ed9t trang web \u0111\u01b0\u1ee3c tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL, tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd v\u00e0 m\u00e1y ch\u1ee7 c\u1ee7a trang web s\u1ebd thi\u1ebft l\u1eadp m\u1ed9t k\u00eanh m\u00e3 h\u00f3a \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 m\u1eadt kh\u1ea9u \u0111\u0103ng nh\u1eadp, s\u1ed1 th\u1ebb t\u00edn d\u1ee5ng, b\u1ea3n ghi tr\u00f2 chuy\u1ec7n, v.v. kh\u00f4ng b\u1ecb \u0111\u00e1nh c\u1eafp ho\u1eb7c s\u1eeda \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng v\u00e0 m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng. Trong giai \u0111o\u1ea1n \u201cb\u1eaft tay\u201d, m\u00e1y ch\u1ee7 s\u1ebd g\u1eedi ch\u1ee9ng ch\u1ec9 SSL (c\u00f3 ch\u1ee9a kh\u00f3a c\u00f4ng khai) c\u1ee7a n\u00f3 \u0111\u1ebfn tr\u00ecnh duy\u1ec7t. Sau khi x\u00e1c th\u1ef1c t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a ch\u1ee9ng ch\u1ec9, tr\u00ecnh duy\u1ec7t s\u1ebd s\u1eed d\u1ee5ng kh\u00f3a c\u00f4ng khai \u0111\u00f3 \u0111\u1ec3 m\u00e3 h\u00f3a m\u1ed9t \u201ckh\u00f3a phi\u00ean\u201d \u0111\u01b0\u1ee3c t\u1ea1o ng\u1eabu nhi\u00ean v\u00e0 g\u1eedi l\u1ea1i cho m\u00e1y ch\u1ee7. M\u00e1y ch\u1ee7 s\u1ebd gi\u1ea3i m\u00e3 kh\u00f3a phi\u00ean b\u1eb1ng kh\u00f3a ri\u00eang c\u1ee7a n\u00f3. Sau \u0111\u00f3, hai b\u00ean s\u1ebd s\u1eed d\u1ee5ng kh\u00f3a phi\u00ean \u0111\u1ed1i x\u1ee9ng hi\u1ec7u qu\u1ea3 n\u00e0y \u0111\u1ec3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n th\u1ef1c s\u1ef1. Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a vi\u1ec7c trao \u0111\u1ed5i kh\u00f3a ban \u0111\u1ea7u, m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c phi\u00ean li\u00ean l\u1ea1c ti\u1ebfp theo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u1ef1c hi\u1ec7n vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e3 h\u00f3a l\u00e0 ch\u1ee9c n\u0103ng c\u01a1 b\u1ea3n nh\u1ea5t c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL. N\u00f3 chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u r\u00f5 r\u00e0ng \u0111\u01b0\u1ee3c truy\u1ec1n gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 th\u00e0nh d\u1eef li\u1ec7u m\u00e3 h\u00f3a kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c. N\u1ebfu kh\u00f4ng c\u00f3 kh\u00f3a ri\u00eang v\u00e0 kh\u00f3a phi\u00ean t\u01b0\u01a1ng \u1ee9ng, ngay c\u1ea3 khi c\u00e1c g\u00f3i d\u1eef li\u1ec7u b\u1ecb ch\u1eb7n b\u1edfi b\u00ean th\u1ee9 ba trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, ng\u01b0\u1eddi nh\u1eadn c\u0169ng ch\u1ec9 nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t chu\u1ed7i m\u00e3 h\u00f3a v\u00f4 ngh\u0129a, do \u0111\u00f3 c\u00f3 hi\u1ec7u qu\u1ea3 ng\u0103n ch\u0103n \u201ccu\u1ed9c t\u1ea5n c\u00f4ng gi\u1eefa c\u00e1c b\u00ean\u201d v\u00e0 ho\u1ea1t \u0111\u1ed9ng nghe l\u00e9n d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cung c\u1ea5p x\u00e1c th\u1ef1c m\u00e1y ch\u1ee7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi m\u1ed9t b\u00ean th\u1ee9 ba \u0111\u00e1ng tin c\u1eady - c\u01a1 quan c\u1ea5p ch\u1ee9ng ch\u1ec9. Tr\u01b0\u1edbc khi c\u1ea5p ch\u1ee9ng ch\u1ec9, CA s\u1ebd ti\u1ebfn h\u00e0nh x\u00e1c th\u1ef1c ch\u1eb7t ch\u1ebd danh t\u00ednh c\u1ee7a ng\u01b0\u1eddi n\u1ed9p \u0111\u01a1n theo lo\u1ea1i ch\u1ee9ng ch\u1ec9. Do \u0111\u00f3, khi tr\u00ecnh duy\u1ec7t hi\u1ec3n th\u1ecb m\u1ed9t ch\u1ee9ng ch\u1ec9 SSL h\u1ee3p l\u1ec7, c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t b\u00ean th\u1ee9 ba \u0111\u00e1ng tin c\u1eady \u0111\u00e3 x\u00e1c nh\u1eadn r\u1eb1ng \u201ctrang web \u0111ang \u0111\u01b0\u1ee3c truy c\u1eadp l\u00e0 th\u1ef1c th\u1ec3 m\u00e0 n\u00f3 tuy\u00ean b\u1ed1\u201d, gi\u00fap ng\u01b0\u1eddi d\u00f9ng x\u00e1c \u0111\u1ecbnh v\u00e0 tr\u00e1nh kh\u1ecfi c\u00e1c trang web l\u1eeba \u0111\u1ea3o gi\u1ea3 m\u1ea1o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, giao th\u1ee9c SSL\/TLS s\u1ebd t\u1ea1o ra m\u1ed9t \u201cb\u1ea3n t\u00f3m t\u1eaft tin nh\u1eafn\u201d \u0111\u1ed9c \u0111\u00e1o cho d\u1eef li\u1ec7u. Sau khi gi\u1ea3i m\u00e3, b\u00ean nh\u1eadn s\u1ebd t\u00ednh to\u00e1n l\u1ea1i v\u00e0 ki\u1ec3m tra b\u1ea3n t\u00f3m t\u1eaft \u0111\u00f3. N\u1ebfu d\u1eef li\u1ec7u b\u1ecb s\u1eeda \u0111\u1ed5i m\u1ed9t c\u00e1ch \u0111\u1ed9c h\u1ea1i trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, th\u1eadm ch\u00ed ch\u1ec9 m\u1ed9t k\u00fd t\u1ef1, gi\u00e1 tr\u1ecb t\u00f3m t\u1eaft c\u0169ng s\u1ebd ho\u00e0n to\u00e0n kh\u00e1c nhau v\u00e0 b\u00ean nh\u1eadn s\u1ebd lo\u1ea1i b\u1ecf g\u00f3i d\u1eef li\u1ec7u \u0111\u00f3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u00f4ng tin kh\u00f4ng b\u1ecb h\u1ecfng.<\/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<h2 class=\"wp-block-heading\">T\u1ea1i sao c\u00e1c trang web hi\u1ec7n \u0111\u1ea1i ph\u1ea3i tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u90e8\u7f72SSL\u8bc1\u4e66\u5df2\u4e0d\u518d\u662f\u7f51\u7ad9\u7684\u53ef\u9009\u9879\uff0c\u800c\u662f\u5173\u4e4e\u5b89\u5168\u3001\u4fe1\u4efb\u4e0e\u4e1a\u52a1\u53d1\u5c55\u7684\u5fc5\u5907\u8981\u7d20\u3002\u5176\u5fc5\u8981\u6027\u4e3b\u8981\u4f53\u73b0\u5728\u6280\u672f\u3001\u7528\u6237\u4f53\u9a8c\u548c\u5546\u4e1a\u89c4\u5219\u4e09\u4e2a\u7ef4\u5ea6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb quan \u0111i\u1ec3m an to\u00e0n k\u1ef9 thu\u1eadt thu\u1ea7n t\u00fay, b\u1ea5t k\u1ef3 trang web n\u00e0o kh\u00f4ng s\u1eed d\u1ee5ng HTTPS \u0111\u1ec1u truy\u1ec1n d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n th\u00f4. Trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng m\u1edf nh\u01b0 Wi-Fi c\u00f4ng c\u1ed9ng, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u00e1nh c\u1eafp cookie, ID phi\u00ean v\u00e0 n\u1ed9i dung bi\u1ec3u m\u1eabu do ng\u01b0\u1eddi d\u00f9ng g\u1eedi, d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u00e0i kho\u1ea3n b\u1ecb \u0111\u00e1nh c\u1eafp v\u00e0 th\u00f4ng tin ri\u00eang t\u01b0 b\u1ecb r\u00f2 r\u1ec9. Ch\u1ee9ng ch\u1ec9 SSL l\u00e0 h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng c\u01a1 b\u1ea3n nh\u01b0 v\u1eady tr\u00ean m\u1ea1ng internet.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-selection-deployment-guide-website-security\/\">H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL: B\u1ea3o v\u1ec7 an ninh cho trang web c\u1ee7a b\u1ea1n<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 x\u00e2y d\u1ef1ng l\u00f2ng tin, c\u00e1c tr\u00ecnh duy\u1ec7t ch\u00ednh hi\u1ec7n \u0111\u1ea1i (nh\u01b0 Google Chrome, Apple Safari) \u0111\u00e3 g\u1eafn nh\u00e3n r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c trang web HTTP l\u00e0 \u201ckh\u00f4ng an to\u00e0n\u201d. C\u1ea3nh b\u00e1o m\u00e0u \u0111\u1ecf n\u00e0y s\u1ebd l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 t\u1ef7 l\u1ec7 ng\u01b0\u1eddi d\u00f9ng r\u1eddi kh\u1ecfi trang. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u0111\u1ecba ch\u1ec9 c\u00f3 bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a b\u1ea3o m\u1eadt v\u00e0 ti\u1ec1n t\u1ed1 \u201cHTTPS\u201d s\u1ebd truy\u1ec1n t\u1ea3i th\u00f4ng \u0111i\u1ec7p t\u00edch c\u1ef1c \u201ck\u1ebft n\u1ed1i n\u00e0y an to\u00e0n\u201d t\u1edbi ng\u01b0\u1eddi d\u00f9ng, t\u1eeb \u0111\u00f3 n\u00e2ng cao \u0111\u00e1ng k\u1ec3 m\u1ee9c \u0111\u1ed9 chuy\u00ean nghi\u1ec7p v\u00e0 uy t\u00ednh c\u1ee7a trang web. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, t\u00e0i ch\u00ednh, h\u00e0nh ch\u00ednh c\u00f4ng, v.v.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0c\u5546\u4e1a\u4e0e\u641c\u7d22\u5f15\u64ce\u89c4\u5219\u4e5f\u5f3a\u5236\u8981\u6c42HTTPS\u3002\u8c37\u6b4c\u65e9\u5728\u591a\u5e74\u524d\u5c31\u5df2\u5c06HTTPS\u4f5c\u4e3a\u641c\u7d22\u6392\u540d\u7684\u4e00\u4e2a\u6b63\u9762\u52a0\u6743\u4fe1\u53f7\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5728\u5176\u4ed6\u6761\u4ef6\u76f8\u540c\u7684\u60c5\u51b5\u4e0b\uff0c\u542f\u7528HTTPS\u7684\u7f51\u7ad9\u53ef\u80fd\u83b7\u5f97\u6bd4HTTP\u7f51\u7ad9\u66f4\u597d\u7684\u641c\u7d22\u6392\u540d\u3002\u540c\u65f6\uff0c\u8bb8\u591a\u73b0\u4ee3Web API\u548c\u6d4f\u89c8\u5668\u65b0\u7279\u6027\u90fd\u5f3a\u5236\u8981\u6c42\u5b89\u5168\u4e0a\u4e0b\u6587\u3002\u4f8b\u5982\uff0c\u5730\u7406\u4f4d\u7f6e\u5b9a\u4f4d\u3001Service Worker\u3001HTTP\/2\/3\u534f\u8bae\u7b49\uff0c\u90fd\u5fc5\u987b\u5728HTTPS\u73af\u5883\u4e0b\u624d\u80fd\u6b63\u5e38\u5de5\u4f5c\u6216\u53d1\u6325\u6700\u4f73\u6027\u80fd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn v\u00e0 l\u1ea5y ch\u1ee9ng ch\u1ec9 SSL?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 SSL ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c v\u00e0 ph\u1ea1m vi b\u1ea3o m\u1eadt, v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ee9ng ch\u1ec9 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u9a8c\u8bc1\u7ea7\u522b\uff0c\u8bc1\u4e66\u53ef\u5206\u4e3a\u4e09\u7c7b\uff1a\u57df\u540d\u9a8c\u8bc1\u578b\u8bc1\u4e66\u4ec5\u9a8c\u8bc1\u7533\u8bf7\u8005\u5bf9\u57df\u540d\u7684\u63a7\u5236\u6743\uff0c\u7b7e\u53d1\u901f\u5ea6\u5feb\uff0c\u9002\u5408\u4e2a\u4eba\u7f51\u7ad9\u6216\u6d4b\u8bd5\u73af\u5883\uff1b\u7ec4\u7ec7\u9a8c\u8bc1\u578b\u8bc1\u4e66\u4f1a\u9a8c\u8bc1\u4f01\u4e1a\u6216\u7ec4\u7ec7\u7684\u771f\u5b9e\u5408\u6cd5\u5b58\u5728\u6027\uff0c\u8bc1\u4e66\u8be6\u60c5\u4e2d\u4f1a\u663e\u793a\u516c\u53f8\u4fe1\u606f\uff0c\u5b89\u5168\u6027\u66f4\u9ad8\uff0c\u9002\u7528\u4e8e\u5546\u4e1a\u7f51\u7ad9\uff1b\u6269\u5c55\u9a8c\u8bc1\u578b\u8bc1\u4e66\u7684\u9a8c\u8bc1\u8fc7\u7a0b\u6700\u4e3a\u4e25\u683c\uff0c\u9664\u4e86\u7ec4\u7ec7\u9a8c\u8bc1\uff0c\u8fd8\u4f1a\u8fdb\u884c\u66f4\u4e25\u683c\u7684\u8d44\u8d28\u5ba1\u6838\uff0c\u5176\u6700\u663e\u8457\u7684\u7279\u5f81\u662f\u6fc0\u6d3b\u6d4f\u89c8\u5668\u5730\u5740\u680f\u7684\u7eff\u8272\u4f01\u4e1a\u540d\u79f0\u680f\uff0c\u901a\u5e38\u88ab\u94f6\u884c\u3001\u5927\u578b\u7535\u5546\u7b49\u9ad8\u7aef\u54c1\u724c\u91c7\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean s\u1ed1 l\u01b0\u1ee3ng t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ch\u1ee9ng ch\u1ec9 t\u00ean mi\u1ec1n \u0111\u01a1n, ch\u1ee9ng ch\u1ec9 t\u00ean mi\u1ec1n \u0111a v\u00e0 ch\u1ee9ng ch\u1ec9 wildcard. Ch\u1ee9ng ch\u1ec9 wildcard c\u00f3 th\u1ec3 b\u1ea3o m\u1eadt m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n con c\u00f9ng c\u1ea5p, gi\u00fap qu\u1ea3n l\u00fd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n nhi\u1ec1u.<\/p>\n<!-- AUTO_SYNCED_PATTERN_INSERT_START -->\n\n  <div class=\"flex justify-between items-center flex-col lg:flex-row xl:flex-col 2xl:flex-row gap-6 sm:gap-8 rounded-lg border border-gray-200 dark:border-gray-700 p-4 mb-8 lg:mb-10 sm:p-6 bg-white dark:bg-gray-750 shadow-md transition-colors duration-300\"\n         data-link=\"https:\/\/www.likacloud.com\/vi\/tolink\/ultahost-ssl-certificates\/\">\n\n      <div class=\"flex flex-col gap-3 gap-4 sm:gap-6 w-full\">\n        <strong class=\"text-2xl font-semibold text-gray-900 dark:text-gray-200\">Ch\u1ee9ng ch\u1ec9 SSL c\u1ee7a UltaHost<\/strong>\n        <div class=\"text-gray-600 dark:text-gray-300 word-word\">Ch\u1ee9ng ch\u1ec9 DV, EV, OV, h\u1ed7 tr\u1ee3 m\u1ee9c b\u1ea3o hi\u1ec3m t\u1ed1i \u0111a $1,750,000 USD, h\u1ed7 tr\u1ee3 v\u00f4 s\u1ed1 t\u00ean mi\u1ec1n ph\u1ee5, h\u1ed7 tr\u1ee3 c\u00e1c \u1ee9ng d\u1ee5ng iOS v\u00e0 Android, \u01b0u \u0111\u00e3i gi\u00e1 t\u1eeb 20% m\u1ed7i th\u00e1ng, v\u1edbi m\u1ee9c ph\u00ed $15,95 USD, b\u1ea3o l\u00e3nh ho\u00e0n ti\u1ec1n trong v\u00f2ng 30 ng\u00e0y.<\/div>\n      <\/div>\n\n      <div class=\"flex items-center flex-col md:flex-row lg:flex-col xl:flex-row 2xl:flex-col gap-6 shrink-0\">\n                  <a href=\"https:\/\/www.likacloud.com\/vi\/tolink\/ultahost-ssl-certificates\/\">\n                          <!-- \u767d\u5929 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251227020448.webp\" alt=\"Logo ch\u1ee9ng ch\u1ec9 SSL\" class=\"content-promotion-card-icon h-9 min-h-9 dark:hidden\" title=\"\">\n              <!-- \u591c\u95f4 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251229052118.webp\" alt=\"Logo ch\u1ee9ng ch\u1ec9 SSL\" class=\"content-promotion-card-icon h-9 min-h-9 hidden dark:block\" title=\"\">\n                      <\/a>\n          \n        <a href=\"https:\/\/www.likacloud.com\/vi\/tolink\/ultahost-ssl-certificates\/\"\n           class=\"bg-blue-500 w-full md:w-auto lg:w-full xl:w-auto 2xl:w-full text-center !text-white dark:!text-gray-200 !px-5 !py-1.5 rounded-full hover:bg-blue-600 transition-colors\">\n          Truy c\u1eadp UltaHost        <\/a>\n      <\/div>\n    <\/div>\n\n    \n<!-- AUTO_SYNCED_PATTERN_INSERT_END -->\n\n\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 hai c\u00e1ch ch\u00ednh \u0111\u1ec3 l\u1ea5y ch\u1ee9ng ch\u1ec9: mua t\u1eeb c\u00e1c CA th\u01b0\u01a1ng m\u1ea1i to\u00e0n c\u1ea7u ho\u1eb7c khu v\u1ef1c, ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c ch\u1ee9ng ch\u1ec9 DV mi\u1ec5n ph\u00ed do c\u00e1c CA phi l\u1ee3i nhu\u1eadn nh\u01b0 Let's Encrypt cung c\u1ea5p. Ch\u1ee9ng ch\u1ec9 th\u01b0\u01a1ng m\u1ea1i mang \u0111\u1ebfn nhi\u1ec1u l\u1ef1a ch\u1ecdn h\u01a1n v\u1ec1 lo\u1ea1i ch\u1ee9ng ch\u1ec9, b\u1ea3o hi\u1ec3m v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt. Trong khi \u0111\u00f3, c\u00e1c ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed gi\u00fap gi\u1ea3m chi ph\u00ed tri\u1ec3n khai HTTPS, nh\u01b0ng th\u01b0\u1eddng c\u00f3 th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c ng\u1eafn h\u01a1n v\u00e0 y\u00eau c\u1ea7u ph\u1ea3i c\u1ea5u h\u00ecnh gia h\u1ea1n t\u1ef1 \u0111\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh n\u1ed9p \u0111\u01a1n th\u01b0\u1eddng bao g\u1ed3m: t\u1ea1o t\u1ec7p CSR tr\u00ean m\u00e1y ch\u1ee7, g\u1eedi t\u1ec7p n\u00e0y \u0111\u1ebfn CA v\u00e0 ho\u00e0n th\u00e0nh qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. Sau khi x\u00e1c th\u1ef1c th\u00e0nh c\u00f4ng, t\u1ea3i xu\u1ed1ng t\u1ec7p ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c c\u1ea5p v\u00e0 cu\u1ed1i c\u00f9ng c\u00e0i \u0111\u1eb7t n\u00f3 v\u00e0o ph\u1ea7n m\u1ec1m m\u00e1y ch\u1ee7 web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e0i \u0111\u1eb7t, c\u1ea5u h\u00ecnh v\u00e0 qu\u1ea3n l\u00fd b\u1ea3o tr\u00ec ch\u1ee9ng ch\u1ec9 SSL<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi l\u1ea5y th\u00e0nh c\u00f4ng t\u1ec7p ch\u1ee9ng ch\u1ec9, vi\u1ec7c c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea3o m\u1eadt c\u00f3 hi\u1ec7u qu\u1ea3. C\u00e1c b\u01b0\u1edbc c\u00e0i \u0111\u1eb7t s\u1ebd kh\u00e1c nhau t\u00f9y theo ph\u1ea7n m\u1ec1m m\u00e1y ch\u1ee7 web.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-guide-importance-application-usage\/\">Trang web c\u1ee7a b\u1ea1n c\u00f3 an to\u00e0n kh\u00f4ng? M\u1ed9t b\u00e0i vi\u1ebft gi\u00fap hi\u1ec3u vai tr\u00f2 c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL v\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 \u00e1p d\u1ee5ng ch\u00fang<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 Nginx, b\u1ea1n c\u1ea7n t\u1ea3i l\u00ean t\u1ec7p ch\u1ee9ng ch\u1ec9 v\u00e0 t\u1ec7p kh\u00f3a ri\u00eang t\u01b0 v\u00e0o th\u01b0 m\u1ee5c m\u00e1y ch\u1ee7, sau \u0111\u00f3 trong t\u1ec7p c\u1ea5u h\u00ecnh trang web t\u01b0\u01a1ng \u1ee9ng, h\u00e3y thay \u0111\u1ed5i c\u1ed5ng l\u1eafng nghe th\u00e0nh 443 v\u00e0 ch\u1ec9 \u0111\u1ecbnh<code data-no-auto-translation=\"\">ssl_certificate<\/code>\u548c<code data-no-auto-translation=\"\">ssl_certificate_key<\/code>\u0110\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 Apache, b\u1ea1n c\u1ea7n ph\u1ea3i k\u00edch ho\u1ea1t m\u00f4-\u0111un SSL v\u00e0 thi\u1ebft l\u1eadp n\u00f3 trong c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u1ea3o.<code data-no-auto-translation=\"\">SSLCertificateFile<\/code>\u548c<code data-no-auto-translation=\"\">SSLCertificateKeyFile<\/code>H\u01b0\u1edbng d\u1eabn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 l\u00e0 kh\u00f4ng \u0111\u1ee7, b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt. \u0110\u1ea7u ti\u00ean, b\u1ea1n c\u1ea7n thi\u1ebft l\u1eadp chuy\u1ec3n h\u01b0\u1edbng v\u0129nh vi\u1ec5n 301 \u0111\u1ec3 bu\u1ed9c t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng HTTP chuy\u1ec3n sang \u0111\u1ecba ch\u1ec9 HTTPS. Th\u1ee9 n\u1eefa, b\u1ea1n n\u00ean v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c phi\u00ean b\u1ea3n SSL c\u0169 kh\u00f4ng an to\u00e0n v\u00e0 ch\u1ec9 k\u00edch ho\u1ea1t c\u00e1c phi\u00ean b\u1ea3n TLS 1.2 v\u00e0 TLS 1.3 trong c\u1ea5u h\u00ecnh. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh danh s\u00e1ch b\u1ed9 m\u00e3 h\u00f3a m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn, v\u00e0 \u01b0u ti\u00ean s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 m\u00e3 h\u00f3a h\u1ed7 tr\u1ee3 m\u00e3 h\u00f3a ti\u1ec1n t\u1ec7. \u0110i\u1ec1u n\u00e0y s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng ngay c\u1ea3 khi kh\u00f3a ri\u00eang t\u01b0 c\u1ee7a m\u00e1y ch\u1ee7 b\u1ecb r\u00f2 r\u1ec9 trong t\u01b0\u01a1ng lai, c\u00e1c b\u1ea3n ghi li\u00ean l\u1ea1c trong qu\u00e1 kh\u1ee9 v\u1eabn kh\u00f4ng th\u1ec3 b\u1ecb gi\u1ea3i m\u00e3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bc1\u4e66\u7684\u957f\u671f\u7ba1\u7406\u7ef4\u62a4\u540c\u6837\u91cd\u8981\u3002\u5fc5\u987b\u5bc6\u5207\u5173\u6ce8\u8bc1\u4e66\u7684\u6709\u6548\u671f\uff0c\u5efa\u8bae\u5728\u5230\u671f\u524d\u81f3\u5c11\u4e00\u4e2a\u6708\u5b8c\u6210\u7eed\u671f\u64cd\u4f5c\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u65e5\u5386\u63d0\u9192\u6216\u5229\u7528\u76d1\u63a7\u5de5\u5177\u3002\u59a5\u5584\u4fdd\u7ba1\u79c1\u94a5\u6587\u4ef6\uff0c\u4e00\u65e6\u6000\u7591\u79c1\u94a5\u53ef\u80fd\u6cc4\u9732\uff0c\u5e94\u7acb\u5373\u901a\u8fc7CA\u540a\u9500\u8be5\u8bc1\u4e66\u3002\u5b9a\u671f\u68c0\u67e5\u8bc1\u4e66\u7684\u914d\u7f6e\u662f\u5426\u7b26\u5408\u6700\u65b0\u7684\u5b89\u5168\u6700\u4f73\u5b9e\u8df5\uff0c\u4f8b\u5982\u68c0\u67e5\u662f\u5426\u652f\u6301OCSP\u88c5\u8ba2\u4ee5\u63d0\u5347\u9a8c\u8bc1\u6548\u7387\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00f3m l\u1ea1i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SSL\u8bc1\u4e66\u4f5c\u4e3a\u4e92\u8054\u7f51\u5b89\u5168\u4fe1\u4efb\u4f53\u7cfb\u7684\u57fa\u77f3\uff0c\u5176\u91cd\u8981\u6027\u4e0d\u8a00\u800c\u55bb\u3002\u5b83\u901a\u8fc7\u7cbe\u5999\u7684\u52a0\u5bc6\u673a\u5236\uff0c\u5728\u5f00\u653e\u7684\u4e92\u8054\u7f51\u4e0a\u6784\u5efa\u8d77\u79c1\u5bc6\u7684\u901a\u4fe1\u96a7\u9053\uff0c\u4fdd\u62a4\u4e86\u7528\u6237\u7684\u6570\u636e\u4e0e\u9690\u79c1\u3002\u540c\u65f6\uff0c\u5b83\u4e5f\u662f\u7f51\u7ad9\u5efa\u7acb\u4e13\u4e1a\u5f62\u8c61\u3001\u83b7\u53d6\u641c\u7d22\u5f15\u64ce\u9752\u7750\u3001\u9002\u914d\u73b0\u4ee3Web\u6280\u672f\u7684\u5fc5\u5907\u6761\u4ef6\u3002\u4ece\u7406\u89e3\u5176\u539f\u7406\u3001\u8ba4\u8bc6\u5176\u5fc5\u8981\u6027\uff0c\u5230\u6b63\u786e\u9009\u62e9\u3001\u5b89\u88c5\u5e76\u7ef4\u62a4\u8bc1\u4e66\uff0c\u6784\u6210\u4e86\u7f51\u7ad9\u5b89\u5168\u8fd0\u8425\u7684\u4e00\u4e2a\u5b8c\u6574\u95ed\u73af\u3002\u5728\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\u65e5\u76ca\u590d\u6742\u7684\u4eca\u5929\uff0c\u4e3a\u7f51\u7ad9\u90e8\u7f72\u5e76\u7ef4\u62a4\u4e00\u4e2a\u6709\u6548\u7684SSL\u8bc1\u4e66\uff0c\u662f\u6240\u6709\u7f51\u7ad9\u6240\u6709\u8005\u5bf9\u7528\u6237\u5e94\u5c3d\u7684\u57fa\u672c\u8d23\u4efb\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 v\u00e0 ch\u1ee9ng ch\u1ec9 TLS c\u00f3 gi\u1ed1ng nhau kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang ta th\u01b0\u1eddng n\u00f3i v\u1ec1 ch\u1ee9ng ch\u1ec9 SSL, nh\u01b0ng v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, ng\u00e0y nay n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 giao th\u1ee9c TLS. SSL l\u00e0 ti\u1ec1n th\u00e2n c\u1ee7a TLS. Do th\u00f3i quen trong l\u1ecbch s\u1eed, ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u1eabn ph\u1ed5 bi\u1ebfn s\u1eed d\u1ee5ng thu\u1eadt ng\u1eef \u201cch\u1ee9ng ch\u1ec9 SSL\u201d. Phi\u00ean b\u1ea3n giao th\u1ee9c ch\u00ednh v\u00e0 an to\u00e0n hi\u1ec7n t\u1ea1i l\u00e0 TLS 1.2 v\u00e0 TLS 1.3.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>\u0110\u1ecdc th\u00eam <a href=\"https:\/\/www.likacloud.com\/vi\/knowledge\/ssl-certificate\/ssl-certificate-importance-for-website-security\/\">T\u00ecm hi\u1ec3u trong m\u1ed9t b\u00e0i vi\u1ebft: Ch\u1ee9ng ch\u1ec9 SSL l\u00e0 g\u00ec v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi b\u1ea3o m\u1eadt trang web<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h3 class=\"wp-block-heading\">Sau khi tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL, website c\u1ee7a t\u00f4i c\u00f3 ho\u00e0n to\u00e0n an to\u00e0n kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i v\u1eady. Ch\u1ee9ng ch\u1ec9 SSL ch\u1ee7 y\u1ebfu b\u1ea3o \u0111\u1ea3m an to\u00e0n cho d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, t\u1ee9c l\u00e0 m\u00e3 h\u00f3a cho k\u1ebft n\u1ed1i t\u1eeb tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u00e1y ch\u1ee7. N\u00f3 kh\u00f4ng th\u1ec3 ng\u0103n ch\u1eb7n m\u00e1y ch\u1ee7 web b\u1ecb hacker x\u00e2m nh\u1eadp, kh\u00f4ng th\u1ec3 ng\u0103n ch\u1eb7n l\u1ed7 h\u1ed5ng trong c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 c\u0169ng kh\u00f4ng th\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS. B\u1ea3o m\u1eadt web l\u00e0 m\u1ed9t d\u1ef1 \u00e1n h\u1ec7 th\u1ed1ng, v\u00e0 ch\u1ee9ng ch\u1ec9 SSL l\u00e0 m\u1ed9t ph\u1ea7n r\u1ea5t quan tr\u1ecdng trong \u0111\u00f3, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 t\u1ea5t c\u1ea3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng ch\u1ec9 \u0111\u1ed1i v\u1edbi t\u00ean mi\u1ec1n chung (wildcard) c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n ph\u1ee5 kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9ng ch\u1ec9 \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n con \u1edf m\u1ed9t c\u1ea5p \u0111\u1ed9 c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, m\u1ed9t ch\u1ee9ng ch\u1ec9 cho<code data-no-auto-translation=\"\">*.example.com<\/code>Ch\u1ee9ng ch\u1ec9 wildcard \u0111\u01b0\u1ee3c c\u1ea5p c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7<code data-no-auto-translation=\"\">blog.example.com<\/code>\u3001<code data-no-auto-translation=\"\">shop.example.com<\/code>Nh\u01b0ng n\u00f3 kh\u00f4ng th\u1ec3 b\u1ea3o v\u1ec7<code data-no-auto-translation=\"\">dev.blog.example.com<\/code>N\u1ebfu mu\u1ed1n b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n con, b\u1ea1n c\u1ea7n ph\u1ea3i xin c\u00e1c ch\u1ee9ng ch\u1ec9 ph\u1ee9c t\u1ea1p h\u01a1n ho\u1eb7c s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 \u0111a mi\u1ec1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ki\u1ec3m tra xem c\u1ea5u h\u00ecnh ch\u1ee9ng ch\u1ec9 SSL cho trang web c\u1ee7a t\u00f4i c\u00f3 ch\u00ednh x\u00e1c kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u c\u00f4ng c\u1ee5 mi\u1ec5n ph\u00ed tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ki\u1ec3m tra, ch\u1eb3ng h\u1ea1n nh\u01b0 SSL Server Test c\u1ee7a SSL Labs. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft xem ch\u1ee9ng ch\u1ec9 c\u1ee7a b\u1ea1n c\u00f3 h\u1ee3p l\u1ec7 kh\u00f4ng, b\u1ed9 m\u00e3 h\u00f3a c\u00f3 an to\u00e0n kh\u00f4ng, phi\u00ean b\u1ea3n giao th\u1ee9c c\u00f3 l\u1ed7i th\u1eddi kh\u00f4ng v\u00e0 \u0111\u01b0a ra m\u1ed9t \u0111i\u1ec3m s\u1ed1 t\u1ed5ng h\u1ee3p c\u00f9ng v\u1edbi c\u00e1c khuy\u1ebfn ngh\u1ecb c\u1ea3i ti\u1ebfn, l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch \u0111\u1ec3 c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean ti\u1ebfn h\u00e0nh ki\u1ec3m tra b\u1ea3o m\u1eadt.<\/p>","protected":false},"excerpt":{"rendered":"<p>SSL\u8bc1\u4e66\u662f\u9075\u5faaSSL\/TLS\u534f\u8bae\u7684\u6570\u5b57\u8bc1\u4e66\uff0c\u901a\u8fc7\u52a0\u5bc6\u901a\u9053\u4fdd\u969c\u7f51\u7ad9\u6570\u636e\u4f20\u8f93\u7684\u5b89\u5168\u3002\u5176\u6838\u5fc3\u4f5c\u7528\u5305\u62ec\u5b9e\u73b0\u6570\u636e\u52a0\u5bc6\u4f20\u8f93\u3001\u63d0\u4f9b\u670d\u52a1\u5668\u8eab\u4efd\u9a8c\u8bc1\u4ee5\u53ca\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u3002\u6587\u7ae0\u8fd8\u5206\u6790\u4e86\u90e8\u7f72SSL\u8bc1\u4e66\u7684\u6280\u672f\u5fc5\u8981\u6027\u3001\u5bf9\u7528\u6237\u4f53\u9a8c\u548c\u641c\u7d22\u5f15\u64ce\u6392\u540d\u7684\u5f71\u54cd\uff0c\u5e76\u4ecb\u7ecd\u4e86\u8bc1\u4e66\u7684\u5206\u7c7b\u3001\u9009\u62e9\u4e0e\u83b7\u53d6\u65b9\u6cd5\u3002<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[326,11,329,319,338],"knowledge_category":[277],"class_list":["post-12360104","knowledge_post","type-knowledge_post","status-publish","hentry","tag-https-guide","tag-ssl-certificate","tag-data-encryption","tag-website-security","tag-cybersecurity","knowledge_category-ssl-certificate"],"acf":{"site_seo_keywords":"SSL\u8bc1\u4e66,HTTPS\u52a0\u5bc6,\u7f51\u7ad9\u5b89\u5168,\u6570\u636e\u5b89\u5168\u4f20\u8f93,SSL\u8bc1\u4e66\u4f5c\u7528,\u5982\u4f55\u9009\u62e9SSL\u8bc1\u4e66,SSL\u8bc1\u4e66\u5b89\u88c5\u914d\u7f6e"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12360104","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\/12360104\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12360104"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12360104"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12360104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}