{"id":2081,"date":"2025-10-07T21:00:25","date_gmt":"2025-10-07T14:00:25","guid":{"rendered":"https:\/\/kienthucmo.com\/?p=2081"},"modified":"2026-01-24T21:30:51","modified_gmt":"2026-01-24T14:30:51","slug":"tim-hieu-http-va-https-su-khac-biet-va-vai-tro-trong-bao-mat-website","status":"publish","type":"post","link":"https:\/\/kienthucmo.com\/vi\/tim-hieu-http-va-https-su-khac-biet-va-vai-tro-trong-bao-mat-website\/","title":{"rendered":"T\u00ecm hi\u1ec3u HTTP v\u00e0 HTTPS: S\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 vai tr\u00f2 trong b\u1ea3o m\u1eadt website"},"content":{"rendered":"\n<p>Trong th\u1eddi \u0111\u1ea1i Internet ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd, vi\u1ec7c truy\u1ec1n t\u1ea3i th\u00f4ng tin gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb tr\u1edf n\u00ean v\u00f4 c\u00f9ng quan tr\u1ecdng. Khi truy c\u1eadp m\u1ed9t website, b\u1ea1n th\u01b0\u1eddng th\u1ea5y hai giao th\u1ee9c ph\u1ed5 bi\u1ebfn l\u00e0 <strong>HTTP<\/strong> v\u00e0 <strong>HTTPS<\/strong>. Nh\u01b0ng th\u1ef1c s\u1ef1 ch\u00fang kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o? HTTP ho\u1ea1t \u0111\u1ed9ng ra sao, HTTPS c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t v\u00e0 t\u1ea1i sao b\u1ea3o m\u1eadt l\u1ea1i tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c website hi\u1ec7n nay?<\/p>\n\n\n\n<p>Trong b\u00e0i vi\u1ebft n\u00e0y m\u00ecnh s\u1ebd c\u00f9ng b\u1ea1n \u0111i s\u00e2u t\u00ecm hi\u1ec3u t\u1eebng kh\u00eda c\u1ea1nh c\u1ee7a hai giao th\u1ee9c n\u00e0y. Ch\u00fang ta s\u1ebd c\u00f9ng xem c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m, c\u00e1ch ph\u00e2n bi\u1ec7t, c\u0169ng nh\u01b0 nh\u1eefng l\u01b0u \u00fd khi tri\u1ec3n khai website an to\u00e0n. B\u1eaft \u0111\u1ea7u th\u00f4i n\u00e0o&#8230;!!!<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"626\" height=\"366\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/http-vs-https.png\" alt=\"T\u00ecm hi\u1ec3u HTTP v\u00e0 HTTPS: S\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 vai tr\u00f2 trong b\u1ea3o m\u1eadt website\" class=\"wp-image-2086\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/http-vs-https.png 626w, https:\/\/kienthucmo.com\/wp-content\/uploads\/http-vs-https-300x175.png 300w\" sizes=\"(max-width: 626px) 100vw, 626px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">1. HTTP l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p><strong>HTTP (HyperText Transfer Protocol)<\/strong> l\u00e0 giao th\u1ee9c d\u00f9ng \u0111\u1ec3 trao \u0111\u1ed5i th\u00f4ng tin gi\u1eefa client (th\u01b0\u1eddng l\u00e0 tr\u00ecnh duy\u1ec7t web) v\u00e0 server tr\u00ean Internet. N\u00f3 cho ph\u00e9p g\u1eedi v\u00e0 nh\u1eadn d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng request (y\u00eau c\u1ea7u) v\u00e0 response (ph\u1ea3n h\u1ed3i), l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n c\u1ee7a World Wide Web. M\u1ecdi khi b\u1ea1n truy c\u1eadp m\u1ed9t trang web, m\u1ecdi d\u1eef li\u1ec7u nh\u01b0 v\u0103n b\u1ea3n, h\u00ecnh \u1ea3nh hay video \u0111\u1ec1u \u0111\u01b0\u1ee3c truy\u1ec1n qua HTTP (ho\u1eb7c HTTPS).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"638\" height=\"359\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/http-la-gi.jpg\" alt=\"HTTP l\u00e0 g\u00ec?\" class=\"wp-image-2082\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/http-la-gi.jpg 638w, https:\/\/kienthucmo.com\/wp-content\/uploads\/http-la-gi-300x169.jpg 300w\" sizes=\"(max-width: 638px) 100vw, 638px\" \/><\/figure>\n<\/div>\n\n\n<p><strong>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Client g\u1eedi request:<\/strong> Khi b\u1ea1n nh\u1eadp \u0111\u1ecba ch\u1ec9 website ho\u1eb7c nh\u1ea5n m\u1ed9t li\u00ean k\u1ebft, tr\u00ecnh duy\u1ec7t s\u1ebd t\u1ea1o m\u1ed9t HTTP request. Request n\u00e0y bao g\u1ed3m c\u00e1c th\u00f4ng tin nh\u01b0: URL mu\u1ed1n truy c\u1eadp, ph\u01b0\u01a1ng th\u1ee9c HTTP (GET, POST\u2026), header (th\u00f4ng tin v\u1ec1 tr\u00ecnh duy\u1ec7t, cookie\u2026), v\u00e0 \u0111\u00f4i khi body ch\u1ee9a d\u1eef li\u1ec7u c\u1ea7n g\u1eedi.<\/li>\n\n\n\n<li><strong>Server x\u1eed l\u00fd request:<\/strong> Server nh\u1eadn request, ph\u00e2n t\u00edch th\u00f4ng tin, truy xu\u1ea5t d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft (nh\u01b0 trang HTML, h\u00ecnh \u1ea3nh, hay d\u1eef li\u1ec7u JSON) v\u00e0 t\u1ea1o HTTP response. Response g\u1ed3m m\u00e3 tr\u1ea1ng th\u00e1i (status code) \u0111\u1ec3 b\u00e1o hi\u1ec7u k\u1ebft qu\u1ea3, header ch\u1ee9a th\u00f4ng tin v\u1ec1 d\u1eef li\u1ec7u tr\u1ea3 v\u1ec1, v\u00e0 body ch\u1ee9a d\u1eef li\u1ec7u th\u1ef1c t\u1ebf.<\/li>\n\n\n\n<li><strong>Client nh\u1eadn response:<\/strong> Tr\u00ecnh duy\u1ec7t nh\u1eadn response, \u0111\u1ecdc header v\u00e0 body, sau \u0111\u00f3 hi\u1ec3n th\u1ecb n\u1ed9i dung website cho ng\u01b0\u1eddi d\u00f9ng. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra nhanh ch\u00f3ng, th\u01b0\u1eddng ch\u1ec9 trong v\u00e0i ph\u1ea7n ngh\u00ecn gi\u00e2y, gi\u00fap ng\u01b0\u1eddi d\u00f9ng th\u1ea5y website t\u1ea3i g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c.<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1edd c\u01a1 ch\u1ebf <strong>request \u2013 response<\/strong> n\u00e0y, HTTP cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng v\u00e0 server giao ti\u1ebfp hi\u1ec7u qu\u1ea3, nh\u01b0ng l\u01b0u \u00fd r\u1eb1ng th\u00f4ng tin kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, n\u00ean d\u1ec5 b\u1ecb nghe l\u00e9n ho\u1eb7c s\u1eeda \u0111\u1ed5i khi truy\u1ec1n qua m\u1ea1ng c\u00f4ng c\u1ed9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. HTTPS l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p><strong>HTTPS (HTTP Secure)<\/strong> l\u00e0 phi\u00ean b\u1ea3n b\u1ea3o m\u1eadt c\u1ee7a HTTP. N\u00f3 s\u1eed d\u1ee5ng SSL\/TLS \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u tr\u01b0\u1edbc khi truy\u1ec1n qua Internet, gi\u00fap b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb \u0111\u1ecdc ho\u1eb7c thay \u0111\u1ed5i b\u1edfi k\u1ebb x\u1ea5u. HTTPS c\u00f2n x\u00e1c th\u1ef1c danh t\u00ednh server, gi\u00fap ng\u01b0\u1eddi d\u00f9ng y\u00ean t\u00e2m r\u1eb1ng h\u1ecd \u0111ang k\u1ebft n\u1ed1i v\u1edbi website th\u1eadt.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"819\" height=\"410\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/https.jpg\" alt=\"HTTPS l\u00e0 g\u00ec?\" class=\"wp-image-2088\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/https.jpg 819w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-300x150.jpg 300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-768x384.jpg 768w\" sizes=\"(max-width: 819px) 100vw, 819px\" \/><\/figure>\n\n\n\n<p><strong>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Client y\u00eau c\u1ea7u k\u1ebft n\u1ed1i b\u1ea3o m\u1eadt:<\/strong> Khi b\u1ea1n truy c\u1eadp m\u1ed9t website b\u1eb1ng HTTPS, tr\u00ecnh duy\u1ec7t g\u1eedi y\u00eau c\u1ea7u k\u1ebft n\u1ed1i b\u1ea3o m\u1eadt t\u1edbi server.<\/li>\n\n\n\n<li><strong>Server g\u1eedi ch\u1ee9ng ch\u1ec9 SSL\/TLS:<\/strong> Server cung c\u1ea5p ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c danh t\u00ednh, ch\u1ee9ng minh n\u00f3 l\u00e0 trang web h\u1ee3p ph\u00e1p.<\/li>\n\n\n\n<li><strong>Trao \u0111\u1ed5i kh\u00f3a phi\u00ean l\u00e0m vi\u1ec7c:<\/strong> Client v\u00e0 server th\u1ecfa thu\u1eadn m\u1ed9t kh\u00f3a m\u00e3 h\u00f3a t\u1ea1m th\u1eddi (session key) \u0111\u1ec3 s\u1eed d\u1ee5ng trong phi\u00ean k\u1ebft n\u1ed1i.<\/li>\n\n\n\n<li><strong>Truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a:<\/strong> M\u1ecdi request v\u00e0 response trong phi\u00ean k\u1ebft n\u1ed1i \u0111\u1ec1u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n v\u00e0 b\u00ed m\u1eadt th\u00f4ng tin.<\/li>\n<\/ol>\n\n\n\n<p><strong>\u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a HTTPS:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u1ea3o m\u1eadt d\u1eef li\u1ec7u:<\/strong> M\u1ecdi th\u00f4ng tin truy\u1ec1n \u0111i \u0111\u1ec1u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a.<\/li>\n\n\n\n<li><strong>X\u00e1c th\u1ef1c server:<\/strong> Gi\u1ea3m nguy c\u01a1 gi\u1ea3 m\u1ea1o website.<\/li>\n\n\n\n<li><strong>SEO v\u00e0 uy t\u00edn:<\/strong> Google \u01b0u ti\u00ean c\u00e1c website d\u00f9ng HTTPS.<\/li>\n\n\n\n<li><strong>T\u0103ng s\u1ef1 tin t\u01b0\u1edfng:<\/strong> Ng\u01b0\u1eddi d\u00f9ng c\u1ea3m th\u1ea5y an t\u00e2m khi th\u1ea5y kh\u00f3a b\u1ea3o m\u1eadt tr\u00ean tr\u00ecnh duy\u1ec7t.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. So s\u00e1nh HTTP v\u00e0 HTTPS<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Ti\u00eau ch\u00ed<\/th><th>HTTP<\/th><th>HTTPS<\/th><\/tr><\/thead><tbody><tr><td><strong>B\u1ea3o m\u1eadt<\/strong><\/td><td>Kh\u00f4ng m\u00e3 h\u00f3a<\/td><td>M\u00e3 h\u00f3a b\u1eb1ng SSL\/TLS<\/td><\/tr><tr><td><strong>C\u1ed5ng<\/strong><\/td><td>80<\/td><td>443<\/td><\/tr><tr><td><strong>Hi\u1ec7u n\u0103ng<\/strong><\/td><td>Nhanh, kh\u00f4ng overhead<\/td><td>Ch\u1eadm h\u01a1n ch\u00fat do m\u00e3 h\u00f3a<\/td><\/tr><tr><td><strong>X\u00e1c th\u1ef1c server<\/strong><\/td><td>Kh\u00f4ng c\u00f3<\/td><td>C\u00f3 x\u00e1c th\u1ef1c server<\/td><\/tr><tr><td><strong>SEO &amp; uy t\u00edn<\/strong><\/td><td>Th\u1ea5p h\u01a1n<\/td><td>\u0110\u01b0\u1ee3c \u01b0u ti\u00ean, t\u0103ng \u0111\u1ed9 tin c\u1eady<\/td><\/tr><tr><td><strong>Th\u00f4ng tin nh\u1ea1y c\u1ea3m<\/strong><\/td><td>D\u1ec5 b\u1ecb \u0111\u00e1nh c\u1eafp<\/td><td>An to\u00e0n, b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>So v\u1edbi HTTP, HTTPS mang l\u1ea1i m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n h\u1eb3n, nh\u1edd m\u00e3 h\u00f3a d\u1eef li\u1ec7u v\u00e0 x\u00e1c th\u1ef1c server, gi\u00fap th\u00f4ng tin ng\u01b0\u1eddi d\u00f9ng an to\u00e0n h\u01a1n. \u0110i\u1ec1u n\u00e0y c\u0169ng l\u00e0m t\u0103ng uy t\u00edn v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a website, \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm \u01b0u ti\u00ean. Ng\u01b0\u1ee3c l\u1ea1i, HTTP v\u1eabn ph\u00f9 h\u1ee3p cho c\u00e1c trang th\u1eed nghi\u1ec7m, website n\u1ed9i b\u1ed9 ho\u1eb7c khi b\u1ea3o m\u1eadt kh\u00f4ng ph\u1ea3i y\u1ebfu t\u1ed1 quan tr\u1ecdng. Tuy nhi\u00ean, v\u1edbi c\u00e1c trang c\u00f4ng khai, \u0111\u1eb7c bi\u1ec7t li\u00ean quan \u0111\u1ebfn th\u00f4ng tin nh\u1ea1y c\u1ea3m, HTTPS lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2240\" height=\"1500\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1.png\" alt=\"So s\u00e1nh HTTP v\u00e0 HTTPS\" class=\"wp-image-2092\" style=\"width:571px;height:auto\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1.png 2240w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1-300x201.png 300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1-1024x686.png 1024w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1-768x514.png 768w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1-1536x1029.png 1536w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1-2048x1371.png 2048w, https:\/\/kienthucmo.com\/wp-content\/uploads\/https-vs-http-1-1300x871.png 1300w\" sizes=\"(max-width: 2240px) 100vw, 2240px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">4. Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng HTTP v\u00e0 HTTPS<\/h2>\n\n\n\n<p><strong>HTTP:<\/strong> HTTP ph\u00f9 h\u1ee3p cho nh\u1eefng website n\u1ed9i b\u1ed9 ho\u1eb7c th\u1eed nghi\u1ec7m, n\u01a1i d\u1eef li\u1ec7u kh\u00f4ng nh\u1ea1y c\u1ea3m. N\u00f3 c\u0169ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng cho c\u00e1c d\u1ef1 \u00e1n h\u1ecdc t\u1eadp, demo t\u00ednh n\u0103ng, ho\u1eb7c m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n, v\u00ec tri\u1ec3n khai nhanh v\u00e0 \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n<p><strong>HTTPS:<\/strong> HTTPS n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho website th\u01b0\u01a1ng m\u1ea1i, ng\u00e2n h\u00e0ng, ho\u1eb7c c\u00e1c trang mua b\u00e1n tr\u1ef1c tuy\u1ebfn, n\u01a1i c\u1ea7n b\u1ea3o m\u1eadt th\u00f4ng tin ng\u01b0\u1eddi d\u00f9ng. Ngo\u00e0i ra, c\u00e1c trang y\u00eau c\u1ea7u \u0111\u0103ng nh\u1eadp, l\u01b0u tr\u1eef d\u1eef li\u1ec7u c\u00e1 nh\u00e2n ho\u1eb7c chia s\u1ebb t\u00e0i li\u1ec7u nh\u1ea1y c\u1ea3m c\u0169ng n\u00ean tri\u1ec3n khai HTTPS \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/p>\n\n\n\n<p><strong>L\u01b0u \u00fd khi chuy\u1ec3n t\u1eeb HTTP sang HTTPS:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mua ho\u1eb7c c\u00e0i \u0111\u1eb7t SSL\/TLS Certificate.<\/li>\n\n\n\n<li>Thi\u1ebft l\u1eadp redirect 301 \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng to\u00e0n b\u1ed9 traffic t\u1eeb HTTP sang HTTPS.<\/li>\n\n\n\n<li>C\u1eadp nh\u1eadt c\u00e1c link n\u1ed9i b\u1ed9 \u0111\u1ec3 tr\u00e1nh l\u1ed7i mixed content, \u0111\u1ea3m b\u1ea3o trang ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. M\u1eb9o ki\u1ec3m tra v\u00e0 c\u00e0i \u0111\u1eb7t HTTPS<\/h2>\n\n\n\n<p><strong>Ki\u1ec3m tra website \u0111ang d\u00f9ng HTTPS:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng nh\u1eadn bi\u1ebft m\u1ed9t website s\u1eed d\u1ee5ng HTTPS b\u1eb1ng c\u00e1ch quan s\u00e1t <strong>tr\u00ecnh duy\u1ec7t<\/strong>: n\u1ebfu c\u00f3 bi\u1ec3u t\u01b0\u1ee3ng kh\u00f3a xanh ho\u1eb7c URL b\u1eaft \u0111\u1ea7u b\u1eb1ng https:\/\/, trang \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt<\/p>\n\n\n\n<p><strong>C\u00e0i \u0111\u1eb7t SSL mi\u1ec5n ph\u00ed v\u1edbi Let\u2019s Encrypt:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u0110\u0103ng k\u00fd domain<\/strong> m\u00e0 b\u1ea1n mu\u1ed1n b\u1ea3o m\u1eadt.<\/li>\n\n\n\n<li><strong>C\u00e0i \u0111\u1eb7t Let\u2019s Encrypt<\/strong> tr\u00ean server \u0111\u1ec3 ph\u00e1t h\u00e0nh SSL certificate.<\/li>\n\n\n\n<li><strong>C\u1ea5u h\u00ecnh t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n<\/strong> certificate \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o HTTPS lu\u00f4n ho\u1ea1t \u0111\u1ed9ng.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra l\u1ea1i<\/strong> b\u1eb1ng tr\u00ecnh duy\u1ec7t ho\u1eb7c c\u00f4ng c\u1ee5 online nh\u01b0 SSL Labs \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o trang web \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt \u0111\u00fang c\u00e1ch.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">6. K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>HTTP l\u00e0 giao th\u1ee9c c\u01a1 b\u1ea3n gi\u00fap trao \u0111\u1ed5i d\u1eef li\u1ec7u tr\u00ean Internet, nh\u01b0ng th\u00f4ng tin truy\u1ec1n qua HTTP kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng. HTTPS c\u1ea3i ti\u1ebfn b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng SSL\/TLS \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u, x\u00e1c th\u1ef1c server v\u00e0 b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n th\u00f4ng tin. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa HTTP v\u00e0 HTTPS kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn b\u1ea3o m\u1eadt m\u00e0 c\u00f2n t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn uy t\u00edn v\u00e0 SEO c\u1ee7a website. Vi\u1ec7c tri\u1ec3n khai HTTPS l\u00e0 c\u1ea7n thi\u1ebft cho c\u00e1c trang web x\u1eed l\u00fd d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, \u0111\u1ed3ng th\u1eddi m\u1edf ra h\u01b0\u1edbng nghi\u00ean c\u1ee9u n\u00e2ng cao v\u1ec1 TLS\/SSL v\u00e0 c\u00e1c phi\u00ean b\u1ea3n HTTP m\u1edbi nh\u01b0 HTTP\/2 \u0111\u1ec3 t\u1ed1i \u01b0u hi\u1ec7u n\u0103ng v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. T\u00e0i li\u1ec7u tham kh\u1ea3o <\/h3>\n\n\n\n<p>[1] T. Berners-Lee, \u201cHypertext Transfer Protocol \u2013 HTTP\/1.1,\u201d <em>RFC 2616<\/em>, IETF, 1999.<br>[2] E. Rescorla, \u201cHTTP Over TLS,\u201d <em>RFC 2818<\/em>, IETF, 2000.<br>[3] M. Nottingham, <em>HTTP\/2: A New Exponent for the Web<\/em>, O\u2019Reilly Media, 2015.<br>[4] Mozilla Developer Network, \u201cIntroduction to HTTPS,\u201d [Online]. Available: <a>https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Overview<\/a>.<br>[5] Let\u2019s Encrypt, \u201cFree SSL\/TLS Certificates,\u201d [Online]. Available: <a>https:\/\/letsencrypt.org\/<\/a>.<br>[6] Google, \u201cHTTPS as a ranking signal,\u201d [Online]. Available: <a>https:\/\/developers.google.com\/search\/blog\/2014\/08\/https-as-ranking-signal<\/a>.<br>[7] OWASP, \u201cTransport Layer Protection Cheat Sheet,\u201d [Online]. Available: <a>https:\/\/cheatsheetseries.owasp.org\/cheatsheets\/Transport_Layer_Protection_Cheat_Sheet.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p> Khi truy c\u1eadp m\u1ed9t website, b\u1ea1n th\u01b0\u1eddng th\u1ea5y hai giao th\u1ee9c ph\u1ed5 bi\u1ebfn l\u00e0 HTTP v\u00e0 HTTPS. Nh\u01b0ng th\u1ef1c s\u1ef1 ch\u00fang kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o? HTTP ho\u1ea1t \u0111\u1ed9ng ra sao, HTTPS c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t v\u00e0 t\u1ea1i sao b\u1ea3o m\u1eadt l\u1ea1i tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c website hi\u1ec7n nay?<\/p>\n","protected":false},"author":1,"featured_media":2084,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowieHDDA:productID":"","footnotes":""},"categories":[19,20],"tags":[],"class_list":["post-2081","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mang-may-tinh","category-an-toan-thong-tin"],"_links":{"self":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts\/2081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/comments?post=2081"}],"version-history":[{"count":4,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts\/2081\/revisions"}],"predecessor-version":[{"id":3271,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts\/2081\/revisions\/3271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/media\/2084"}],"wp:attachment":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/media?parent=2081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/categories?post=2081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/tags?post=2081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}