{"id":5252,"date":"2026-02-11T14:31:02","date_gmt":"2026-02-11T14:31:02","guid":{"rendered":"https:\/\/securitybriefing.net\/?p=5252"},"modified":"2026-02-24T13:41:11","modified_gmt":"2026-02-24T13:41:11","slug":"giao-thuc-internet-nao-duoc-su-dung-de-truyen-du-lieu-duoc-ma-hoa-mot-huong-dan-day-du","status":"publish","type":"post","link":"https:\/\/securitybriefing.net\/vi\/an-ninh-mang\/giao-thuc-internet-nao-duoc-su-dung-de-truyen-du-lieu-duoc-ma-hoa-mot-huong-dan-day-du\/","title":{"rendered":"Giao Th\u1ee9c Internet N\u00e0o \u0110\u01b0\u1ee3c S\u1eed D\u1ee5ng \u0110\u1ec3 Truy\u1ec1n D\u1eef Li\u1ec7u M\u00e3 H\u00f3a? H\u01b0\u1edbng D\u1eabn Ho\u00e0n Ch\u1ec9nh"},"content":{"rendered":"<p>Truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a qua internet l\u00e0 m\u1ed9t y\u00eau c\u1ea7u n\u1ec1n t\u1ea3ng trong an ninh m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. M\u1ed7i t\u01b0\u01a1ng t\u00e1c tr\u1ef1c tuy\u1ebfn, d\u00f9 li\u00ean quan \u0111\u1ebfn duy\u1ec7t web, \u1ee9ng d\u1ee5ng \u0111\u00e1m m\u00e2y, giao ti\u1ebfp email, y\u00eau c\u1ea7u API, hay giao d\u1ecbch t\u00e0i ch\u00ednh, \u0111\u1ec1u d\u1ef1a v\u00e0o c\u00e1c giao th\u1ee9c truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c ch\u1eb7n v\u00e0 gi\u1ea3 m\u1ea1o.<\/p>\n\n\n\n<p>V\u1edbi <a href=\"https:\/\/securitybriefing.net\/vi\/moi-de-doa-mang\/\">m\u1ed1i \u0111e d\u1ecda m\u1ea1ng<\/a> ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i kh\u00f4ng c\u00f2n l\u00e0 t\u00f9y ch\u1ecdn. C\u00e1c t\u1ed5 ch\u1ee9c v\u00e0 c\u00e1 nh\u00e2n ph\u1ea3i d\u1ef1a v\u00e0o c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt internet \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt, to\u00e0n v\u1eb9n v\u00e0 x\u00e1c th\u1ef1c. Giao th\u1ee9c ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a an to\u00e0n qua internet l\u00e0 B\u1ea3o m\u1eadt T\u1ea7ng Giao v\u1eadn (TLS). Tuy nhi\u00ean, \u0111\u1ec3 hi\u1ec3u t\u1ea1i sao TLS chi\u1ebfm \u01b0u th\u1ebf v\u00e0 c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 li\u00ean quan, c\u1ea7n c\u00f3 c\u00e1i nh\u00ecn s\u00e2u h\u01a1n v\u1ec1 d\u1eef li\u1ec7u m\u00e3 h\u00f3a v\u00e0 c\u00e1c giao th\u1ee9c b\u1ea3o v\u1ec7 n\u00f3.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"quick-fix-summary-table\"><strong>B\u1ea3ng T\u00f3m t\u1eaft S\u1eeda ch\u1eefa Nhanh<\/strong><\/h2>\n\n\n<p>N\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm c\u00e1c c\u1ea3i ti\u1ebfn ngay l\u1eadp t\u1ee9c trong b\u1ea3o m\u1eadt truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a, h\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N\u00e2ng c\u1ea5p l\u00ean TLS 1.3:<\/strong> S\u1eed d\u1ee5ng phi\u00ean b\u1ea3n TLS m\u1edbi nh\u1ea5t \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c l\u1ed7 h\u1ed5ng c\u00f3 trong c\u00e1c giao th\u1ee9c c\u0169 h\u01a1n.<\/li>\n\n\n\n<li><strong>Th\u1ef1c hi\u1ec7n HTTPS M\u1ecdi n\u01a1i:<\/strong> M\u00e3 h\u00f3a t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng web b\u1eb1ng HTTPS.<\/li>\n\n\n\n<li><strong>S\u1eed d\u1ee5ng B\u1ed9 M\u00e3 M\u1ea1nh:<\/strong> \u01afu ti\u00ean AES-256-GCM ho\u1eb7c ChaCha20-Poly1305 cho s\u1ee9c m\u1ea1nh m\u00e3 h\u00f3a hi\u1ec7n \u0111\u1ea1i.<\/li>\n\n\n\n<li><strong>T\u1ef1 \u0111\u1ed9ng Qu\u1ea3n l\u00fd Ch\u1ee9ng ch\u1ec9:<\/strong> S\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 Let\u2019s Encrypt \u0111\u1ec3 duy tr\u00ec ch\u1ee9ng ch\u1ec9 TLS h\u1ee3p l\u1ec7.<\/li>\n\n\n\n<li><strong>K\u00edch ho\u1ea1t B\u1ea3o m\u1eadt Ti\u1ebfn b\u1ed9 Ho\u00e0n h\u1ea3o (PFS):<\/strong> B\u1ea3o v\u1ec7 kh\u00f3a phi\u00ean ngay c\u1ea3 khi c\u00e1c kh\u00f3a d\u00e0i h\u1ea1n sau n\u00e0y b\u1ecb x\u00e2m ph\u1ea1m.<\/li>\n\n\n\n<li><strong>V\u00f4 hi\u1ec7u h\u00f3a C\u00e1c Giao th\u1ee9c B\u1ecb Khai t\u1eed:<\/strong> Lo\u1ea1i b\u1ecf SSL, TLS 1.0 v\u00e0 TLS 1.1 kh\u1ecfi c\u1ea5u h\u00ecnh c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n\n\n\n<p>C\u00e1c bi\u1ec7n ph\u00e1p n\u00e0y gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ef1 ph\u01a1i nhi\u1ec5m v\u1edbi c\u00e1c vector t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn nh\u01b0 t\u1ea5n c\u00f4ng man-in-the-middle (MITM), t\u1ea5n c\u00f4ng h\u1ea1 c\u1ea5p v\u00e0 chi\u1ebfm \u0111o\u1ea1t phi\u00ean.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-encrypted-data\"><strong>D\u1eef li\u1ec7u M\u00e3 h\u00f3a L\u00e0 G\u00ec?<\/strong><\/h2>\n\n\n<p>D\u1eef li\u1ec7u m\u00e3 h\u00f3a \u0111\u1ec1 c\u1eadp \u0111\u1ebfn th\u00f4ng tin \u0111\u00e3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i b\u1eb1ng c\u00e1c thu\u1eadt to\u00e1n m\u1eadt m\u00e3 \u0111\u1ec3 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p. M\u00e3 h\u00f3a chuy\u1ec3n \u0111\u1ed5i v\u0103n b\u1ea3n r\u00f5 c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c th\u00e0nh v\u0103n b\u1ea3n m\u00e3 h\u00f3a b\u1eb1ng c\u00e1c thu\u1eadt to\u00e1n to\u00e1n h\u1ecdc v\u00e0 kh\u00f3a m\u1eadt m\u00e3. Ch\u1ec9 c\u00e1c b\u00ean \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n v\u1edbi kh\u00f3a gi\u1ea3i m\u00e3 th\u00edch h\u1ee3p m\u1edbi c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c th\u00f4ng tin g\u1ed1c.<\/p>\n\n\n\n<p>M\u00e3 h\u00f3a \u0111\u1ea3m b\u1ea3o ba nguy\u00ean t\u1eafc b\u1ea3o m\u1eadt quan tr\u1ecdng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u1ea3o m\u1eadt:<\/strong> Ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m.<\/li>\n\n\n\n<li><strong>To\u00e0n v\u1eb9n:<\/strong> B\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi b\u1ecb thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/li>\n\n\n\n<li><strong>X\u00e1c th\u1ef1c:<\/strong> X\u00e1c minh danh t\u00ednh c\u1ee7a c\u00e1c b\u00ean giao ti\u1ebfp.<\/li>\n<\/ul>\n\n\n\n<p>D\u1eef li\u1ec7u m\u00e3 h\u00f3a l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u00f4ng tin \u0111\u0103ng nh\u1eadp<\/li>\n\n\n\n<li>S\u1ed1 th\u1ebb t\u00edn d\u1ee5ng<\/li>\n\n\n\n<li>D\u1eef li\u1ec7u nh\u1eadn d\u1ea1ng c\u00e1 nh\u00e2n<\/li>\n\n\n\n<li>Giao ti\u1ebfp doanh nghi\u1ec7p<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u API v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c \u0111\u00e1m m\u00e2y<\/li>\n<\/ul>\n\n\n\n<p>Khi d\u1eef li\u1ec7u di chuy\u1ec3n qua c\u00e1c m\u1ea1ng c\u00f4ng c\u1ed9ng nh\u01b0 internet, n\u00f3 v\u1ed1n d\u0129 b\u1ecb ph\u01a1i nhi\u1ec5m. N\u1ebfu kh\u00f4ng c\u00f3 m\u00e3 h\u00f3a, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 ch\u1eb7n g\u00f3i tin b\u1eb1ng c\u00f4ng c\u1ee5 sniffing g\u00f3i tin v\u00e0 tr\u00edch xu\u1ea5t th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb. C\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u b\u1ecb ch\u1eb7n v\u1eabn kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c v\u00e0 kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"internet-protocols-and-secure-data-transmission\"><strong>C\u00e1c Giao th\u1ee9c Internet v\u00e0 Truy\u1ec1n D\u1eef li\u1ec7u An to\u00e0n<\/strong><\/h2>\n\n\n<p>C\u00e1c giao th\u1ee9c internet x\u00e1c \u0111\u1ecbnh c\u00e1c quy t\u1eafc \u0111i\u1ec1u ch\u1ec9nh c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb qua m\u1ea1ng. Trong khi c\u00e1c giao th\u1ee9c c\u01a1 b\u1ea3n nh\u01b0 HTTP v\u00e0 FTP t\u1eadp trung v\u00e0o ch\u1ee9c n\u0103ng, c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt k\u1ebft h\u1ee3p m\u00e3 h\u00f3a \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/p>\n\n\n\n<p>Khi th\u1ea3o lu\u1eadn v\u1ec1 giao th\u1ee9c internet n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a, m\u1ed9t s\u1ed1 giao th\u1ee9c t\u1eadp trung v\u00e0o b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o:<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"1-transport-layer-security-tls\"><strong>1. B\u1ea3o m\u1eadt T\u1ea7ng Giao v\u1eadn (TLS)<\/strong><\/h3>\n\n\n<p>Giao th\u1ee9c ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u01b0u l\u01b0\u1ee3ng web, m\u00e1y ch\u1ee7 email, API v\u00e0 nhi\u1ec1u d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y. TLS ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng giao v\u1eadn v\u00e0 cung c\u1ea5p m\u00e3 h\u00f3a \u0111\u1ea7u cu\u1ed1i.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"2-internet-protocol-security-ipsec\"><strong>2. B\u1ea3o m\u1eadt Giao th\u1ee9c Internet (IPsec)<\/strong><\/h3>\n\n\n<p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf t\u1ea7ng m\u1ea1ng \u0111\u1ec3 m\u00e3 h\u00f3a c\u00e1c g\u00f3i IP. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai trong VPN v\u00e0 k\u00eanh site-to-site.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"3-secure-shell-ssh\"><strong>3. V\u1ecf B\u1ea3o m\u1eadt (SSH)<\/strong><\/h3>\n\n\n<p>B\u1ea3o v\u1ec7 truy c\u1eadp qu\u1ea3n tr\u1ecb t\u1eeb xa v\u00e0 giao ti\u1ebfp d\u00f2ng l\u1ec7nh gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<p>M\u1ed7i giao th\u1ee9c n\u00e0y ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch kh\u00e1c nhau trong m\u00f4 h\u00ecnh TCP\/IP:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Giao th\u1ee9c<\/th><th>T\u1ea7ng<\/th><th>S\u1eed d\u1ee5ng Ch\u00ednh<\/th><\/tr><\/thead><tbody><tr><td>TLS<\/td><td>T\u1ea7ng Giao v\u1eadn<\/td><td>B\u1ea3o v\u1ec7 web, email, API<\/td><\/tr><tr><td>IPsec<\/td><td>T\u1ea7ng M\u1ea1ng<\/td><td>VPN v\u00e0 k\u00eanh b\u1ea3o m\u1eadt<\/td><\/tr><tr><td>SSH<\/td><td>T\u1ea7ng \u1ee8ng d\u1ee5ng<\/td><td>Truy c\u1eadp t\u1eeb xa an to\u00e0n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Trong s\u1ed1 n\u00e0y, TLS l\u00e0 giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a qua internet c\u00f4ng c\u1ed9ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ec3 b\u1ea3o v\u1ec7 k\u1ebft n\u1ed1i HTTPS.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"tls-security-the-core-protocol-for-encrypted-data-transmission\"><strong>B\u1ea3o m\u1eadt TLS: Giao th\u1ee9c C\u1ed1t l\u00f5i cho Truy\u1ec1n D\u1eef li\u1ec7u M\u00e3 h\u00f3a<\/strong><\/h2>\n\n\n<p><strong>B\u1ea3o m\u1eadt T\u1ea7ng Giao v\u1eadn (TLS)<\/strong> l\u00e0 giao th\u1ee9c ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a qua internet. N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng giao v\u1eadn c\u1ee7a m\u00f4 h\u00ecnh TCP\/IP v\u00e0 thi\u1ebft l\u1eadp m\u1ed9t k\u00eanh giao ti\u1ebfp an to\u00e0n gi\u1eefa hai h\u1ec7 th\u1ed1ng, th\u01b0\u1eddng l\u00e0 m\u1ed9t m\u00e1y kh\u00e1ch (ch\u1eb3ng h\u1ea1n nh\u01b0 tr\u00ecnh duy\u1ec7t web) v\u00e0 m\u1ed9t m\u00e1y ch\u1ee7.<\/p>\n\n\n\n<p>TLS \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p ba \u0111\u1ea3m b\u1ea3o b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u1ea3o m\u1eadt<\/strong> \u2013 Ng\u0103n ch\u1eb7n c\u00e1c b\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n \u0111\u1ecdc d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n.<\/li>\n\n\n\n<li><strong>To\u00e0n v\u1eb9n<\/strong> \u2013 \u0110\u1ea3m b\u1ea3o d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/li>\n\n\n\n<li><strong>X\u00e1c th\u1ef1c<\/strong> \u2013 X\u00e1c minh danh t\u00ednh c\u1ee7a c\u00e1c b\u00ean giao ti\u1ebfp.<\/li>\n<\/ul>\n\n\n\n<p>TLS \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 b\u1ea3o v\u1ec7:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u01b0u l\u01b0\u1ee3ng web (HTTPS)<\/li>\n\n\n\n<li>M\u00e1y ch\u1ee7 email (SMTP, IMAP, POP3 qua TLS)<\/li>\n\n\n\n<li>API v\u00e0 d\u1ecbch v\u1ee5 web<\/li>\n\n\n\n<li>N\u1ec1n t\u1ea3ng nh\u1eafn tin<\/li>\n\n\n\n<li>\u1ee8ng d\u1ee5ng d\u1ef1a tr\u00ean \u0111\u00e1m m\u00e2y<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-tls-encryption-works\"><strong>C\u00e1ch TLS M\u00e3 h\u00f3a Ho\u1ea1t \u0111\u1ed9ng<\/strong><\/h3>\n\n\n<p>TLS s\u1eed d\u1ee5ng m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p m\u1eadt m\u00e3 lai k\u1ebft h\u1ee3p m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng v\u00e0 \u0111\u1ed1i x\u1ee9ng cho c\u1ea3 b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>B\u1eaft tay TLS (M\u00e3 h\u00f3a B\u1ea5t \u0111\u1ed1i x\u1ee9ng):<\/strong><br>Trong qu\u00e1 tr\u00ecnh k\u1ebft n\u1ed1i ban \u0111\u1ea7u, m\u1eadt m\u00e3 b\u1ea5t \u0111\u1ed1i x\u1ee9ng (ch\u1eb3ng h\u1ea1n nh\u01b0 RSA ho\u1eb7c ECC) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c th\u1ef1c m\u00e1y ch\u1ee7 v\u00e0 trao \u0111\u1ed5i kh\u00f3a phi\u00ean an to\u00e0n.<\/li>\n\n\n\n<li><strong>M\u00e3 h\u00f3a Phi\u00ean (M\u00e3 h\u00f3a \u0110\u1ed1i x\u1ee9ng):<\/strong><br>Khi phi\u00ean an to\u00e0n \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng (ch\u1eb3ng h\u1ea1n nh\u01b0 AES-256-GCM ho\u1eb7c ChaCha20-Poly1305) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n<\/ol>\n\n\n\n<p>M\u00f4 h\u00ecnh hai l\u1edbp n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"authentication-through-digital-certificates\"><strong>X\u00e1c th\u1ef1c Qua Ch\u1ee9ng ch\u1ec9 S\u1ed1<\/strong><\/h3>\n\n\n<p>M\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a b\u1ea3o m\u1eadt TLS l\u00e0 x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean ch\u1ee9ng ch\u1ec9. M\u00e1y ch\u1ee7 tr\u00ecnh b\u00e0y m\u1ed9t ch\u1ee9ng ch\u1ec9 s\u1ed1 \u0111\u01b0\u1ee3c ph\u00e1t h\u00e0nh b\u1edfi m\u1ed9t C\u01a1 quan Ch\u1ee9ng nh\u1eadn (CA) \u0111\u00e1ng tin c\u1eady. Ch\u1ee9ng ch\u1ec9 n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>X\u00e1c nh\u1eadn danh t\u00ednh c\u1ee7a m\u00e1y ch\u1ee7<\/li>\n\n\n\n<li>Ch\u1ee9a kh\u00f3a c\u00f4ng khai c\u1ee7a m\u00e1y ch\u1ee7<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c x\u00e1c th\u1ef1c b\u1edfi m\u00e1y kh\u00e1ch tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u trao \u0111\u1ed5i d\u1eef li\u1ec7u<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu ch\u1ee9ng ch\u1ec9 h\u1ee3p l\u1ec7 v\u00e0 \u0111\u00e1ng tin c\u1eady, k\u1ebft n\u1ed1i m\u00e3 h\u00f3a s\u1ebd ti\u1ebfp t\u1ee5c. N\u1ebfu kh\u00f4ng, tr\u00ecnh duy\u1ec7t s\u1ebd c\u1ea3nh b\u00e1o ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>C\u01a1 ch\u1ebf n\u00e0y b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i vi\u1ec7c m\u1ea1o danh v\u00e0 t\u1ea5n c\u00f4ng man-in-the-middle (MITM).<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"ssl-certificates-now-tls-certificates\"><strong>Ch\u1ee9ng ch\u1ec9 SSL (Gi\u1edd l\u00e0 Ch\u1ee9ng ch\u1ec9 TLS)<\/strong><\/h2>\n\n\n<p>M\u1eb7c d\u00f9 thu\u1eadt ng\u1eef \u201cch\u1ee9ng ch\u1ec9 SSL\u201d v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i, c\u00e1c k\u1ebft n\u1ed1i an to\u00e0n hi\u1ec7n \u0111\u1ea1i d\u1ef1a v\u00e0o TLS\u2014kh\u00f4ng ph\u1ea3i SSL. L\u1edbp \u1ed4 C\u1eafm B\u1ea3o M\u1eadt (SSL) \u0111\u00e3 b\u1ecb khai t\u1eed do c\u00e1c l\u1ed7 h\u1ed5ng nghi\u00eam tr\u1ecdng (\u0111\u1eb7c bi\u1ec7t l\u00e0 trong SSL 2.0 v\u00e0 SSL 3.0).<\/p>\n\n\n\n<p>Ng\u00e0y nay, khi m\u1ecdi ng\u01b0\u1eddi nh\u1eafc \u0111\u1ebfn \u201cch\u1ee9ng ch\u1ec9 SSL,\u201d h\u1ecd th\u1ef1c s\u1ef1 \u0111ang \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ch\u1ee9ng ch\u1ec9 TLS.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"what-an-ssltls-certificate-contains\"><strong>Ch\u1ee9ng ch\u1ec9 SSL\/TLS Ch\u1ee9a G\u00ec<\/strong><\/h3>\n\n\n<p>M\u1ed9t ch\u1ee9ng ch\u1ec9 TLS bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u00ean mi\u1ec1n<\/li>\n\n\n\n<li>Danh t\u00ednh c\u1ee7a t\u1ed5 ch\u1ee9c (\u0111\u1ed1i v\u1edbi ch\u1ee9ng ch\u1ec9 OV\/EV)<\/li>\n\n\n\n<li>Kh\u00f3a m\u00e3 h\u00f3a c\u00f4ng khai<\/li>\n\n\n\n<li>C\u01a1 quan Ch\u1ee9ng nh\u1eadn ph\u00e1t h\u00e0nh<\/li>\n\n\n\n<li>Th\u1eddi gian hi\u1ec7u l\u1ef1c c\u1ee7a ch\u1ee9ng ch\u1ec9<\/li>\n<\/ul>\n\n\n\n<p>Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ed9t trang web qua HTTPS, m\u00e1y ch\u1ee7 tr\u00ecnh b\u00e0y ch\u1ee9ng ch\u1ec9 TLS c\u1ee7a n\u00f3. Tr\u00ecnh duy\u1ec7t x\u00e1c minh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u1ee9ng ch\u1ec9 h\u1ee3p l\u1ec7<\/li>\n\n\n\n<li>N\u00f3 ch\u01b0a h\u1ebft h\u1ea1n<\/li>\n\n\n\n<li>N\u00f3 \u0111\u01b0\u1ee3c k\u00fd b\u1edfi m\u1ed9t CA \u0111\u00e1ng tin c\u1eady<\/li>\n\n\n\n<li>T\u00ean mi\u1ec1n kh\u1edbp v\u1edbi ch\u1ee9ng ch\u1ec9<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c ki\u1ec3m tra \u0111\u1ec1u \u0111\u1ea1t, phi\u00ean TLS an to\u00e0n s\u1ebd b\u1eaft \u0111\u1ea7u.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"why-certificates-matter-for-encrypted-data\"><strong>T\u1ea1i Sao Ch\u1ee9ng Ch\u1ec9 Quan Tr\u1ecdng \u0110\u1ed1i V\u1edbi D\u1eef Li\u1ec7u M\u00e3 H\u00f3a<\/strong><\/h3>\n\n\n<p>Ch\u1ee9ng ch\u1ec9 thi\u1ebft l\u1eadp s\u1ef1 tin c\u1eady v\u00e0 cho ph\u00e9p m\u00e3 h\u00f3a. N\u1ebfu kh\u00f4ng c\u00f3 ch\u00fang:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Giao ti\u1ebfp m\u00e3 h\u00f3a kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c<\/li>\n\n\n\n<li>Ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 x\u00e1c minh h\u1ecd \u0111ang k\u1ebft n\u1ed1i v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 h\u1ee3p ph\u00e1p<\/li>\n\n\n\n<li>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng MITM tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n \u0111\u00e1ng k\u1ec3<\/li>\n<\/ul>\n\n\n\n<p>Qu\u1ea3n l\u00fd ch\u1ee9ng ch\u1ec9, t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n v\u00e0 gi\u00e1m s\u00e1t thu h\u1ed3i do \u0111\u00f3 l\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu c\u1ee7a truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"https-how-encrypted-web-traffic-works\"><strong>HTTPS: C\u00e1ch L\u01b0u L\u01b0\u1ee3ng Web M\u00e3 H\u00f3a Ho\u1ea1t \u0110\u1ed9ng<\/strong><\/h2>\n\n\n<p>HTTPS (Giao th\u1ee9c Truy\u1ec1n Si\u00eau v\u0103n b\u1ea3n B\u1ea3o m\u1eadt) l\u00e0 phi\u00ean b\u1ea3n b\u1ea3o m\u1eadt c\u1ee7a HTTP. N\u00f3 k\u1ebft h\u1ee3p HTTP v\u1edbi m\u00e3 h\u00f3a TLS \u0111\u1ec3 b\u1ea3o v\u1ec7 giao ti\u1ebfp web.<\/p>\n\n\n\n<p>Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ed9t trang web b\u1eaft \u0111\u1ea7u b\u1eb1ng <code>https:\/\/<\/code>, tr\u00ecnh duy\u1ec7t:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Kh\u1edfi t\u1ea1o m\u1ed9t b\u1eaft tay TLS<\/li>\n\n\n\n<li>X\u00e1c minh ch\u1ee9ng ch\u1ec9 c\u1ee7a m\u00e1y ch\u1ee7<\/li>\n\n\n\n<li>Thi\u1ebft l\u1eadp kh\u00f3a phi\u00ean m\u00e3 h\u00f3a<\/li>\n\n\n\n<li>M\u00e3 h\u00f3a t\u1ea5t c\u1ea3 c\u00e1c trao \u0111\u1ed5i d\u1eef li\u1ec7u ti\u1ebfp theo<\/li>\n<\/ol>\n\n\n\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt<\/li>\n\n\n\n<li>Chi ti\u1ebft thanh to\u00e1n kh\u00f4ng th\u1ec3 b\u1ecb ch\u1eb7n<\/li>\n\n\n\n<li>Th\u00f4ng tin c\u00e1 nh\u00e2n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7<\/li>\n\n\n\n<li>T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c duy tr\u00ec<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"why-https-is-the-standard-today\"><strong>T\u1ea1i Sao HTTPS L\u00e0 Ti\u00eau Chu\u1ea9n Ng\u00e0y Nay<\/strong><\/h3>\n\n\n<p>\u0110\u1ebfn n\u0103m 2023, h\u01a1n 95% l\u01b0u l\u01b0\u1ee3ng web to\u00e0n c\u1ea7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng HTTPS. S\u1ef1 ch\u1ea5p nh\u1eadn r\u1ed9ng r\u00e3i n\u00e0y \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt tr\u00ecnh duy\u1ec7t \u0111\u00e1nh d\u1ea5u c\u00e1c trang kh\u00f4ng ph\u1ea3i HTTPS l\u00e0 \u201cKh\u00f4ng An To\u00e0n\u201d<\/li>\n\n\n\n<li>S\u1edf th\u00edch x\u1ebfp h\u1ea1ng c\u1ee7a c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm cho c\u00e1c trang HTTPS<\/li>\n\n\n\n<li>Nh\u1eadn th\u1ee9c v\u1ec1 an ninh m\u1ea1ng t\u0103ng l\u00ean<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh (GDPR, PCI-DSS, HIPAA, v.v.)<\/li>\n<\/ul>\n\n\n\n<p>HTTPS hi\u1ec7n l\u00e0 k\u1ef3 v\u1ecdng c\u01a1 b\u1ea3n cho giao ti\u1ebfp web an to\u00e0n.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"comparison-of-https-vs-http\"><strong>So s\u00e1nh HTTPS v\u00e0 HTTP<\/strong><\/h3>\n\n\n<p>Khi th\u1ea3o lu\u1eadn v\u1ec1 truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa HTTPS v\u00e0 HTTP. C\u00e1c giao th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u qua internet, nh\u01b0ng ch\u00fang kh\u00e1c nhau \u0111\u00e1ng k\u1ec3 v\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"https-vs-http\"><strong>HTTPS so v\u1edbi HTTP<\/strong><\/h4>\n\n\n<p>HTTPS (Giao th\u1ee9c Truy\u1ec1n Si\u00eau v\u0103n b\u1ea3n B\u1ea3o m\u1eadt) l\u00e0 m\u1ed9t ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a HTTP (Giao th\u1ee9c Truy\u1ec1n Si\u00eau v\u0103n b\u1ea3n) v\u00e0 cung c\u1ea5p m\u1ed9t k\u00eanh giao ti\u1ebfp an to\u00e0n qua internet. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa HTTPS v\u00e0 HTTP nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u00e3 h\u00f3a<\/strong>: HTTPS s\u1eed d\u1ee5ng m\u00e3 h\u00f3a \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, trong khi HTTP kh\u00f4ng m\u00e3 h\u00f3a d\u1eef li\u1ec7u, \u0111\u1ec3 l\u1ea1i d\u1eef li\u1ec7u d\u1ec5 b\u1ecb ch\u1eb7n.<\/li>\n\n\n\n<li><strong>T\u00ednh To\u00e0n v\u1eb9n D\u1eef li\u1ec7u<\/strong>: HTTPS \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch ng\u0103n d\u1eef li\u1ec7u b\u1ecb thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n, trong khi HTTP kh\u00f4ng cung c\u1ea5p s\u1ef1 b\u1ea3o v\u1ec7 nh\u01b0 v\u1eady.<\/li>\n\n\n\n<li><strong>X\u00e1c th\u1ef1c<\/strong>: HTTPS cung c\u1ea5p x\u00e1c th\u1ef1c b\u1eb1ng c\u00e1ch x\u00e1c minh danh t\u00ednh c\u1ee7a trang web, gi\u1ea3m nguy c\u01a1 t\u1ea5n c\u00f4ng man-in-the-middle. HTTP thi\u1ebfu t\u00ednh n\u0103ng n\u00e0y, khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng d\u1ec5 d\u00e0ng m\u1ea1o danh c\u00e1c trang web.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"importance-of-https\"><strong>T\u1ea7m Quan Tr\u1ecdng c\u1ee7a HTTPS<\/strong><\/h3>\n\n\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng HTTPS l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c truy\u1ec1n qua internet. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u v\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt v\u00e0 an to\u00e0n, cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng tr\u1ea3i nghi\u1ec7m duy\u1ec7t web an to\u00e0n. K\u1ebft qu\u1ea3 l\u00e0, nhi\u1ec1u trang web \u0111\u00e3 chuy\u1ec3n t\u1eeb HTTP sang HTTPS \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"tls-vs-ssl-whats-the-difference\"><strong>TLS so v\u1edbi SSL: S\u1ef1 Kh\u00e1c Bi\u1ec7t L\u00e0 G\u00ec?<\/strong><\/h2>\n\n\n<p>M\u1eb7c d\u00f9 SSL v\u00e0 TLS th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp c\u00f9ng nhau, nh\u01b0ng ch\u00fang kh\u00f4ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n\n\n\n<p>SSL (L\u1edbp \u1ed4 C\u1eafm B\u1ea3o M\u1eadt) l\u00e0 giao th\u1ee9c m\u00e3 h\u00f3a ban \u0111\u1ea7u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0o nh\u1eefng n\u0103m 1990. Do nhi\u1ec1u l\u1ed7i b\u1ea3o m\u1eadt, n\u00f3 \u0111\u00e3 b\u1ecb khai t\u1eed ch\u00ednh th\u1ee9c v\u00e0 \u0111\u01b0\u1ee3c thay th\u1ebf b\u1edfi TLS.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t so s\u00e1nh r\u00f5 r\u00e0ng:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>T\u00ednh n\u0103ng<\/th><th>SSL<\/th><th>TLS<\/th><\/tr><\/thead><tbody><tr><td>B\u1ea3o v\u1ec7<\/td><td>D\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng<\/td><td>Thi\u1ebft k\u1ebf m\u1eadt m\u00e3 m\u1ea1nh h\u01a1n<\/td><\/tr><tr><td>Phi\u00ean b\u1ea3n M\u1edbi Nh\u1ea5t<\/td><td>SSL 3.0 (l\u1ed7i th\u1eddi)<\/td><td>TLS 1.3 (ti\u00eau chu\u1ea9n hi\u1ec7n t\u1ea1i)<\/td><\/tr><tr><td>B\u1ed9 M\u00e3<\/td><td>H\u1ea1n ch\u1ebf v\u00e0 l\u1ed7i th\u1eddi<\/td><td>Thu\u1eadt to\u00e1n hi\u1ec7n \u0111\u1ea1i, an to\u00e0n<\/td><\/tr><tr><td>Qu\u00e1 Tr\u00ecnh B\u1eaft tay<\/td><td>Ch\u1eadm h\u01a1n v\u00e0 k\u00e9m an to\u00e0n h\u01a1n<\/td><td>Tinh gi\u1ea3n v\u00e0 nhanh h\u01a1n<\/td><\/tr><tr><td>S\u1eed D\u1ee5ng Trong Ng\u00e0nh<\/td><td>B\u1ecb khai t\u1eed<\/td><td>\u0110\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"why-tls-13-is-the-current-standard\"><strong>T\u1ea1i Sao TLS 1.3 L\u00e0 Ti\u00eau Chu\u1ea9n Hi\u1ec7n T\u1ea1i<\/strong><\/h3>\n\n\n<p>TLS 1.3 \u0111\u00e3 gi\u1edbi thi\u1ec7u nh\u1eefng c\u1ea3i ti\u1ebfn l\u1edbn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lo\u1ea1i b\u1ecf c\u00e1c thu\u1eadt to\u00e1n m\u1eadt m\u00e3 kh\u00f4ng an to\u00e0n<\/li>\n\n\n\n<li>Gi\u1ea3m \u0111\u1ed9 tr\u1ec5 b\u1eaft tay<\/li>\n\n\n\n<li>Th\u1ef1c thi b\u1ea3o m\u1eadt ti\u1ebfn b\u1ed9<\/li>\n\n\n\n<li>\u0110\u01a1n gi\u1ea3n h\u00f3a \u0111\u00e0m ph\u00e1n m\u00e3 h\u00f3a<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1eefng c\u1ea3i ti\u1ebfn n\u00e0y l\u00e0m cho TLS 1.3 v\u1eeba nhanh h\u01a1n v\u1eeba an to\u00e0n h\u01a1n so v\u1edbi c\u00e1c phi\u00ean b\u1ea3n tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"why-tls-and-https-are-essential-for-secure-data-transmission\"><strong>T\u1ea1i Sao TLS v\u00e0 HTTPS L\u00e0 C\u1ea7n Thi\u1ebft Cho Truy\u1ec1n D\u1eef Li\u1ec7u An To\u00e0n<\/strong><\/h2>\n\n\n<p>Khi tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi, <em>\u201cGiao th\u1ee9c internet n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a?\u201d<\/em>, c\u00e2u tr\u1ea3 l\u1eddi r\u00f5 r\u00e0ng v\u00e0 c\u00f3 th\u1ea9m quy\u1ec1n l\u00e0:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>B\u1ea3o m\u1eadt T\u1ea7ng Giao v\u1eadn (TLS)<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>TLS, th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai th\u00f4ng qua HTTPS, b\u1ea3o v\u1ec7 g\u1ea7n nh\u01b0 t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng internet m\u00e3 h\u00f3a ng\u00e0y nay.<\/p>\n\n\n\n<p>B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd, x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean ch\u1ee9ng ch\u1ec9 v\u00e0 b\u1ea3o m\u1eadt ti\u1ebfn b\u1ed9, TLS \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua internet v\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt, nguy\u00ean v\u1eb9n v\u00e0 x\u00e1c minh.<\/p>\n\n\n\n<p>Khi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng k\u1ef9 thu\u1eadt s\u1ed1 ti\u1ebfp t\u1ee5c m\u1edf r\u1ed9ng, th\u00f4ng qua \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, thi\u1ebft b\u1ecb IoT, API v\u00e0 \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng, t\u1ea7m quan tr\u1ecdng c\u1ee7a truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a d\u1ef1a tr\u00ean TLS s\u1ebd ch\u1ec9 t\u0103ng l\u00ean.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"data-encryption-and-secure-information-exchange\"><strong>M\u00e3 h\u00f3a D\u1eef li\u1ec7u v\u00e0 Trao \u0111\u1ed5i Th\u00f4ng tin An to\u00e0n<\/strong><\/h2>\n\n\n<p>M\u00e3 h\u00f3a d\u1eef li\u1ec7u l\u00e0 m\u1ed9t tr\u1ee5 c\u1ed9t c\u01a1 b\u1ea3n c\u1ee7a giao ti\u1ebfp k\u1ef9 thu\u1eadt s\u1ed1 hi\u1ec7n \u0111\u1ea1i. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00f4ng tin v\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt v\u00e0 b\u1ea3o v\u1ec7 khi di chuy\u1ec3n qua c\u00e1c m\u1ea1ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 internet c\u00f4ng c\u1ed9ng. M\u00e3 h\u00f3a ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch chuy\u1ec3n \u0111\u1ed5i v\u0103n b\u1ea3n r\u00f5 c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c th\u00e0nh v\u0103n b\u1ea3n m\u00e3 h\u00f3a, kh\u00f4ng th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c n\u1ebfu kh\u00f4ng c\u00f3 kh\u00f3a gi\u1ea3i m\u00e3 ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m nh\u01b0 th\u00f4ng tin \u0111\u0103ng nh\u1eadp, giao d\u1ecbch t\u00e0i ch\u00ednh, h\u1ed3 s\u01a1 c\u00e1 nh\u00e2n v\u00e0 th\u00f4ng tin kinh doanh \u0111\u1ed9c quy\u1ec1n. N\u1ebfu kh\u00f4ng c\u00f3 m\u00e3 h\u00f3a, b\u1ea5t k\u1ef3 d\u1eef li\u1ec7u n\u00e0o \u0111\u01b0\u1ee3c truy\u1ec1n tr\u1ef1c tuy\u1ebfn c\u00f3 th\u1ec3 b\u1ecb ch\u1eb7n, \u0111\u1ecdc ho\u1eb7c s\u1eeda \u0111\u1ed5i b\u1edfi c\u00e1c b\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"types-of-data-encryption\"><strong>C\u00e1c Lo\u1ea1i M\u00e3 h\u00f3a D\u1eef li\u1ec7u<\/strong><\/h3>\n\n\n<p>C\u00f3 hai m\u00f4 h\u00ecnh m\u00e3 h\u00f3a ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n: <strong>m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng<\/strong> V\u00e0 <strong>m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng<\/strong>. M\u1ed7i lo\u1ea1i \u0111\u00f3ng m\u1ed9t vai tr\u00f2 c\u1ee5 th\u1ec3 trong c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"symmetric-encryption\">M\u00e3 h\u00f3a \u0110\u1ed1i x\u1ee9ng<\/h4>\n\n\n<p>M\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng s\u1eed d\u1ee5ng m\u1ed9t kh\u00f3a chia s\u1ebb duy nh\u1ea5t cho c\u1ea3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3. V\u00ec c\u00f9ng m\u1ed9t kh\u00f3a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u1ea3 hai \u0111\u1ea7u, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y r\u1ea5t hi\u1ec7u qu\u1ea3 v\u00e0 ph\u00f9 h\u1ee3p \u0111\u1ec3 m\u00e3 h\u00f3a kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>Thu\u1eadt to\u00e1n \u0111\u1ed1i x\u1ee9ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 <strong>Ti\u00eau chu\u1ea9n M\u00e3 h\u00f3a Ti\u00ean ti\u1ebfn (AES)<\/strong>. AES \u0111\u01b0\u1ee3c tin c\u1eady tr\u00ean to\u00e0n c\u1ea7u nh\u1edd c\u00e1c thu\u1ed9c t\u00ednh b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u su\u1ea5t hi\u1ec7u qu\u1ea3. C\u00e1c tri\u1ec3n khai ph\u1ed5 bi\u1ebfn bao g\u1ed3m AES-128, AES-192 v\u00e0 AES-256, v\u1edbi AES-256 cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7 cao nh\u1ea5t.<\/p>\n\n\n\n<p>M\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n sau khi phi\u00ean an to\u00e0n \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp<\/li>\n\n\n\n<li>B\u1ea3o v\u1ec7 d\u1eef li\u1ec7u khi l\u01b0u tr\u1eef tr\u00ean \u0111\u0129a v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/li>\n\n\n\n<li>B\u1ea3o m\u1eadt l\u01b0u l\u01b0\u1ee3ng VPN v\u00e0 sao l\u01b0u m\u00e3 h\u00f3a<\/li>\n<\/ul>\n\n\n<h4 class=\"wp-block-heading\" id=\"asymmetric-encryption\">M\u00e3 h\u00f3a B\u1ea5t \u0111\u1ed1i x\u1ee9ng<\/h4>\n\n\n<p>M\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng s\u1eed d\u1ee5ng m\u1ed9t c\u1eb7p kh\u00f3a m\u1eadt m\u00e3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1ed8T <strong>kh\u00f3a c\u00f4ng khai<\/strong> \u0111\u1ec3 m\u00e3 h\u00f3a<\/li>\n\n\n\n<li>M\u1ed8T <strong>kh\u00f3a ri\u00eang t\u01b0<\/strong> \u0111\u1ec3 gi\u1ea3i m\u00e3<\/li>\n<\/ul>\n\n\n\n<p>M\u00f4 h\u00ecnh n\u00e0y gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 ph\u00e2n ph\u1ed1i kh\u00f3a v\u1ed1n c\u00f3 trong m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng. V\u00ec kh\u00f3a c\u00f4ng khai c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia s\u1ebb c\u00f4ng khai, m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng l\u00e0 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i an to\u00e0n qua c\u00e1c m\u1ea1ng kh\u00f4ng tin c\u1eady.<\/p>\n\n\n\n<p>M\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u1eaft tay TLS<\/li>\n\n\n\n<li>Qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i kh\u00f3a b\u1ea3o m\u1eadt<\/li>\n\n\n\n<li>Ch\u1eef k\u00fd s\u1ed1 v\u00e0 x\u00e1c th\u1ef1c<\/li>\n<\/ul>\n\n\n\n<p>M\u1eb7c d\u00f9 m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean t\u00ednh to\u00e1n h\u01a1n, nh\u01b0ng n\u00f3 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c cho ph\u00e9p giao ti\u1ebfp an to\u00e0n gi\u1eefa c\u00e1c b\u00ean ch\u01b0a t\u1eebng t\u01b0\u01a1ng t\u00e1c tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"role-of-encryption-in-data-security\"><strong>Vai tr\u00f2 c\u1ee7a M\u00e3 h\u00f3a trong B\u1ea3o m\u1eadt D\u1eef li\u1ec7u<\/strong><\/h3>\n\n\n<p>M\u00e3 h\u00f3a l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a n\u00f3. Ngay c\u1ea3 khi d\u1eef li\u1ec7u m\u00e3 h\u00f3a b\u1ecb ch\u1eb7n trong qu\u00e1 tr\u00ecnh truy\u1ec1n, n\u00f3 v\u1eabn kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c n\u1ebfu kh\u00f4ng c\u00f3 kh\u00f3a gi\u1ea3i m\u00e3 th\u00edch h\u1ee3p.<\/p>\n\n\n\n<p>M\u00e3 h\u00f3a b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Truy c\u1eadp tr\u00e1i ph\u00e9p<\/li>\n\n\n\n<li>Nghe l\u00e9n<\/li>\n\n\n\n<li>Thao t\u00e1c d\u1eef li\u1ec7u<\/li>\n\n\n\n<li>Tr\u1ed9m c\u1eafp th\u00f4ng tin x\u00e1c th\u1ef1c<\/li>\n<\/ul>\n\n\n\n<p>S\u1ef1 b\u1ea3o v\u1ec7 n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u00f4ng tin nh\u1eadn d\u1ea1ng c\u00e1 nh\u00e2n (PII)<\/li>\n\n\n\n<li>D\u1eef li\u1ec7u t\u00e0i ch\u00ednh v\u00e0 thanh to\u00e1n<\/li>\n\n\n\n<li>Th\u00f4ng tin li\u00ean l\u1ea1c doanh nghi\u1ec7p b\u1ea3o m\u1eadt<\/li>\n\n\n\n<li>Th\u00f4ng tin x\u00e1c th\u1ef1c x\u00e1c th\u1ef1c<\/li>\n<\/ul>\n\n\n\n<p>B\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 to\u00e0n v\u1eb9n, m\u00e3 h\u00f3a t\u1ea1o th\u00e0nh n\u1ec1n t\u1ea3ng c\u1ee7a s\u1ef1 tin c\u1eady trong c\u00e1c h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"secure-transmission-explained\"><strong>Gi\u1ea3i th\u00edch v\u1ec1 Truy\u1ec1n t\u1ea3i An to\u00e0n<\/strong><\/h2>\n\n\n<p>Truy\u1ec1n t\u1ea3i an to\u00e0n \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c k\u1ef9 thu\u1eadt v\u00e0 giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u khi n\u00f3 di chuy\u1ec3n gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng. M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 b\u1ecb ch\u1eb7n, thay \u0111\u1ed5i ho\u1eb7c gi\u1ea3 m\u1ea1o trong qu\u00e1 tr\u00ecnh truy\u1ec1n.<\/p>\n\n\n\n<p>Truy\u1ec1n t\u1ea3i an to\u00e0n k\u1ebft h\u1ee3p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thu\u1eadt to\u00e1n m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd<\/li>\n\n\n\n<li>C\u01a1 ch\u1ebf x\u00e1c th\u1ef1c<\/li>\n\n\n\n<li>X\u00e1c minh to\u00e0n v\u1eb9n<\/li>\n<\/ul>\n\n\n\n<p>C\u00f9ng nhau, c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y ng\u0103n ch\u1eb7n c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng ph\u1ed5 bi\u1ebfn nh\u01b0 t\u1ea5n c\u00f4ng man-in-the-middle, sniffing g\u00f3i tin v\u00e0 chi\u1ebfm \u0111o\u1ea1t phi\u00ean.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"protocols-for-secure-transmission\"><strong>Giao th\u1ee9c cho Truy\u1ec1n t\u1ea3i An to\u00e0n<\/strong><\/h3>\n\n\n<p>M\u1ed9t s\u1ed1 giao th\u1ee9c internet \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a. C\u00e1c giao th\u1ee9c n\u00e0y tri\u1ec3n khai m\u00e3 h\u00f3a \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00ednh b\u1ea3o m\u1eadt v\u00e0 to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"transport-layer-security-tls\"><strong>B\u1ea3o m\u1eadt T\u1ea7ng Giao v\u1eadn (TLS)<\/strong><\/h3>\n\n\n<p>TLS l\u00e0 giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n qua internet. N\u00f3 cung c\u1ea5p c\u00e1c k\u00eanh truy\u1ec1n th\u00f4ng m\u00e3 h\u00f3a cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u01b0u l\u01b0\u1ee3ng web (HTTPS)<\/li>\n\n\n\n<li>D\u1ecbch v\u1ee5 email<\/li>\n\n\n\n<li>API v\u00e0 n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y<\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng nh\u1eafn tin<\/li>\n<\/ul>\n\n\n\n<p>TLS m\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n v\u00e0 x\u00e1c minh danh t\u00ednh c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng giao ti\u1ebfp b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 s\u1ed1.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"secure-shell-ssh\"><strong>Secure Shell (SSH) - V\u1ecf B\u1ecdc An To\u00e0n (SSH)<\/strong><\/h3>\n\n\n<p>SSH l\u00e0 m\u1ed9t giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy c\u1eadp v\u00e0 qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch an to\u00e0n qua c\u00e1c m\u1ea1ng kh\u00f4ng b\u1ea3o m\u1eadt. N\u00f3 cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>X\u00e1c th\u1ef1c m\u1ea1nh m\u1ebd<\/li>\n\n\n\n<li>Th\u1ef1c thi l\u1ec7nh m\u00e3 h\u00f3a<\/li>\n\n\n\n<li>Truy\u1ec1n t\u1ea3i t\u1ec7p an to\u00e0n<\/li>\n<\/ul>\n\n\n\n<p>SSH th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho qu\u1ea3n tr\u1ecb m\u00e1y ch\u1ee7 t\u1eeb xa v\u00e0 qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng an to\u00e0n.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"why-secure-transmission-matters\"><strong>T\u1ea1i sao Truy\u1ec1n t\u1ea3i An to\u00e0n Quan tr\u1ecdng<\/strong><\/h3>\n\n\n<p>Truy\u1ec1n t\u1ea3i an to\u00e0n l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. N\u1ebfu kh\u00f4ng c\u00f3 m\u00e3 h\u00f3a v\u00e0 c\u00e1c giao th\u1ee9c an to\u00e0n, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i d\u1ec5 b\u1ecb ch\u1eb7n, thao t\u00e1c v\u00e0 l\u1ea1m d\u1ee5ng.<\/p>\n\n\n\n<p>B\u1eb1ng c\u00e1ch tri\u1ec3n khai c\u00e1c giao th\u1ee9c truy\u1ec1n t\u1ea3i an to\u00e0n nh\u01b0 TLS v\u00e0 SSH, c\u00e1c t\u1ed5 ch\u1ee9c v\u00e0 c\u00e1 nh\u00e2n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u1eef li\u1ec7u v\u1eabn b\u1ea3o m\u1eadt<\/li>\n\n\n\n<li>Th\u00f4ng tin li\u00ean l\u1ea1c l\u00e0 x\u00e1c th\u1ef1c<\/li>\n\n\n\n<li>T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a th\u00f4ng tin \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7<\/li>\n<\/ul>\n\n\n\n<p>Trong m\u00f4i tr\u01b0\u1eddng k\u1ef9 thu\u1eadt s\u1ed1 ng\u00e0y c\u00e0ng k\u1ebft n\u1ed1i, truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u an to\u00e0n kh\u00f4ng c\u00f2n l\u00e0 t\u00f9y ch\u1ecdn, m\u00e0 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u c\u1ed1t l\u00f5i cho quy\u1ec1n ri\u00eang t\u01b0, tu\u00e2n th\u1ee7 v\u00e0 tin c\u1eady.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"wireless-encryption-securing-data-over-wifi-networks\"><strong>M\u00e3 h\u00f3a Kh\u00f4ng d\u00e2y: B\u1ea3o v\u1ec7 D\u1eef li\u1ec7u Qua M\u1ea1ng Wi-Fi<\/strong><\/h2>\n\n\n<p>M\u00e3 h\u00f3a kh\u00f4ng d\u00e2y \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i qua <a href=\"https:\/\/securitybriefing.net\/vi\/wifi\/dieu-nao-sau-day-an-toan-de-thuc-hien-qua-wifi-cong-cong\/\">m\u1ea1ng Wi-Fi<\/a>. Kh\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ea1ng c\u00f3 d\u00e2y, t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y truy\u1ec1n qua kh\u00f4ng kh\u00ed, khi\u1ebfn ch\u00fang d\u1ec5 b\u1ecb ch\u1eb7n, truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 t\u1ea5n c\u00f4ng sniffing g\u00f3i tin. N\u1ebfu kh\u00f4ng c\u00f3 m\u00e3 h\u00f3a th\u00edch h\u1ee3p, k\u1ebb t\u1ea5n c\u00f4ng trong ph\u1ea1m vi t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y c\u00f3 th\u1ec3 ti\u1ec1m \u1ea9n b\u1eaft gi\u1eef d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m.<\/p>\n\n\n\n<p>V\u00ec l\u00fd do n\u00e0y, c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a kh\u00f4ng d\u00e2y m\u1ea1nh m\u1ebd l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u1ea3 m\u1ea1ng c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"types-of-wireless-encryption-protocols\"><strong>C\u00e1c Lo\u1ea1i Giao th\u1ee9c M\u00e3 h\u00f3a Kh\u00f4ng d\u00e2y<\/strong><\/h3>\n\n\n<p>Theo th\u1eddi gian, m\u1ed9t s\u1ed1 giao th\u1ee9c b\u1ea3o m\u1eadt kh\u00f4ng d\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 c\u1ea3i thi\u1ec7n ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a Wi-Fi.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"wired-equivalent-privacy-wep\">B\u1ea3o m\u1eadt T\u01b0\u01a1ng \u0111\u01b0\u01a1ng C\u00f3 d\u00e2y (WEP)<\/h4>\n\n\n<p>WEP l\u00e0 m\u1ed9t trong nh\u1eefng giao th\u1ee9c m\u00e3 h\u00f3a kh\u00f4ng d\u00e2y \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p b\u1ea3o v\u1ec7 c\u01a1 b\u1ea3n cho m\u1ea1ng Wi-Fi. Tuy nhi\u00ean, WEP ch\u1ee9a nh\u1eefng \u0111i\u1ec3m y\u1ebfu m\u00e3 h\u00f3a \u0111\u00e1ng k\u1ec3 v\u00e0 c\u00f3 th\u1ec3 b\u1ecb ph\u00e1 v\u1ee1 trong v\u00e0i ph\u00fat b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<p>Ng\u00e0y nay, WEP \u0111\u01b0\u1ee3c coi l\u00e0 l\u1ed7i th\u1eddi v\u00e0 kh\u00f4ng bao gi\u1edd n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"wifi-protected-access-wpa-and-wpa2\">Wi-Fi Protected Access (WPA v\u00e0 WPA2)<\/h4>\n\n\n<p>WPA \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u nh\u01b0 m\u1ed9t s\u1ef1 thay th\u1ebf cho WEP, cung c\u1ea5p m\u00e3 h\u00f3a c\u1ea3i ti\u1ebfn v\u00e0 c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n\n\n\n<p>WPA2 c\u1ea3i thi\u1ec7n h\u01a1n n\u1eefa b\u1ea3o m\u1eadt kh\u00f4ng d\u00e2y b\u1eb1ng c\u00e1ch tri\u1ec3n khai <strong>AES (Ti\u00eau chu\u1ea9n M\u00e3 h\u00f3a Ti\u00ean ti\u1ebfn)<\/strong> m\u00e3 h\u00f3a, cung c\u1ea5p b\u1ea3o v\u1ec7 m\u1ea1nh m\u1ebd ch\u1ed1ng l\u1ea1i truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n\n\n\n<p>WPA2 \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p trong nhi\u1ec1u n\u0103m v\u00e0 v\u1eabn an to\u00e0n khi \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1ch.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"wpa3-current-recommended-standard\">WPA3 (Ti\u00eau chu\u1ea9n Khuy\u1ebfn ngh\u1ecb Hi\u1ec7n t\u1ea1i)<\/h4>\n\n\n<p>Giao th\u1ee9c m\u00e3 h\u00f3a kh\u00f4ng d\u00e2y an to\u00e0n nh\u1ea5t hi\u1ec7n nay l\u00e0 <strong>WPA3<\/strong>. N\u00f3 c\u1ea3i ti\u1ebfn WPA2 b\u1eb1ng c\u00e1ch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u0103ng c\u01b0\u1eddng x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean m\u1eadt kh\u1ea9u<\/li>\n\n\n\n<li>C\u1ea3i thi\u1ec7n b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i t\u1ea5n c\u00f4ng brute-force<\/li>\n\n\n\n<li>Cung c\u1ea5p b\u1ea3o m\u1eadt chuy\u1ec3n ti\u1ebfp trong c\u00e1c phi\u00ean kh\u00f4ng d\u00e2y<\/li>\n\n\n\n<li>B\u1ea3o v\u1ec7 m\u1ea1ng m\u1edf b\u1eb1ng m\u00e3 h\u00f3a d\u1eef li\u1ec7u c\u00e1 nh\u00e2n h\u00f3a<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng Wi-Fi hi\u1ec7n \u0111\u1ea1i, WPA3 l\u00e0 ti\u00eau chu\u1ea9n khuy\u1ebfn ngh\u1ecb cho truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u kh\u00f4ng d\u00e2y m\u00e3 h\u00f3a.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"challenges-in-wireless-network-security\"><strong>Th\u00e1ch th\u1ee9c trong B\u1ea3o m\u1eadt M\u1ea1ng Kh\u00f4ng d\u00e2y<\/strong><\/h3>\n\n\n<p>M\u1ea1ng kh\u00f4ng d\u00e2y \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00e1c r\u1ee7i ro an ninh m\u1ea1ng \u0111\u1ed9c \u0111\u00e1o, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u1eb7n t\u00edn hi\u1ec7u b\u1edfi k\u1ebb t\u1ea5n c\u00f4ng g\u1ea7n \u0111\u00f3<\/li>\n\n\n\n<li>\u0110i\u1ec3m truy c\u1eadp gi\u1ea3 m\u1ea1o m\u1ea1ng h\u1ee3p ph\u00e1p<\/li>\n\n\n\n<li>M\u1eadt kh\u1ea9u Wi-Fi y\u1ebfu ho\u1eb7c t\u00e1i s\u1eed d\u1ee5ng<\/li>\n\n\n\n<li>Firmware router l\u1ed7i th\u1eddi<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>K\u00edch ho\u1ea1t WPA3 (ho\u1eb7c \u00edt nh\u1ea5t l\u00e0 WPA2)<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh, duy nh\u1ea5t<\/li>\n\n\n\n<li>C\u1eadp nh\u1eadt firmware router th\u01b0\u1eddng xuy\u00ean<\/li>\n\n\n\n<li>V\u00f4 hi\u1ec7u h\u00f3a c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng kh\u00f4ng s\u1eed d\u1ee5ng<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng VPN khi k\u1ebft n\u1ed1i v\u1edbi Wi-Fi c\u00f4ng c\u1ed9ng<\/li>\n<\/ul>\n\n\n\n<p>M\u00e3 h\u00f3a kh\u00f4ng d\u00e2y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng c\u1ed9ng nh\u01b0 qu\u00e1n c\u00e0 ph\u00ea, s\u00e2n bay v\u00e0 kh\u00e1ch s\u1ea1n, n\u01a1i k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 c\u1ed1 g\u1eafng gi\u00e1m s\u00e1t l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"email-encryption-protecting-sensitive-communications\"><strong>M\u00e3 h\u00f3a Email: B\u1ea3o v\u1ec7 Th\u00f4ng tin Li\u00ean l\u1ea1c Nh\u1ea1y c\u1ea3m<\/strong><\/h2>\n\n\n<p>Email v\u1eabn l\u00e0 m\u1ed9t trong nh\u1eefng k\u00eanh giao ti\u1ebfp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t, v\u00e0 c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng k\u00eanh b\u1ecb t\u1ed9i ph\u1ea1m m\u1ea1ng nh\u1eafm \u0111\u1ebfn nhi\u1ec1u nh\u1ea5t. M\u00e3 h\u00f3a email b\u1ea3o v\u1ec7 n\u1ed9i dung c\u1ee7a c\u00e1c tin nh\u1eafn email kh\u1ecfi truy c\u1eadp tr\u00e1i ph\u00e9p trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/p>\n\n\n\n<p>N\u1ebfu kh\u00f4ng c\u00f3 m\u00e3 h\u00f3a, email c\u00f3 th\u1ec3 b\u1ecb ch\u1eb7n khi di chuy\u1ec3n gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 th\u01b0, l\u00e0m l\u1ed9 th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 th\u00f4ng tin \u0111\u0103ng nh\u1eadp, h\u1ed3 s\u01a1 t\u00e0i ch\u00ednh v\u00e0 t\u00e0i li\u1ec7u b\u1ea3o m\u1eadt.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"methods-of-email-encryption\"><strong>Ph\u01b0\u01a1ng ph\u00e1p M\u00e3 h\u00f3a Email<\/strong><\/h3>\n\n\n<p>M\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o m\u1eadt th\u00f4ng tin li\u00ean l\u1ea1c qua email.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"pretty-good-privacy-pgp\">B\u1ea3o m\u1eadt Kh\u00e1 T\u1ed1t (PGP)<\/h4>\n\n\n<p>PGP l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i cung c\u1ea5p c\u1ea3 quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 x\u00e1c th\u1ef1c cho c\u00e1c tin nh\u1eafn email. N\u00f3 s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh m\u00e3 h\u00f3a lai:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng \u0111\u1ec3 trao \u0111\u1ed5i kh\u00f3a phi\u00ean an to\u00e0n<\/li>\n\n\n\n<li>M\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng \u0111\u1ec3 m\u00e3 h\u00f3a n\u1ed9i dung email<\/li>\n<\/ul>\n\n\n\n<p>PGP c\u0169ng h\u1ed7 tr\u1ee3 ch\u1eef k\u00fd s\u1ed1, cho ph\u00e9p ng\u01b0\u1eddi nh\u1eadn x\u00e1c minh t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a ng\u01b0\u1eddi g\u1eedi.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"smime-securemultipurpose-internet-mail-extensions\">S\/MIME (Ph\u1ea7n m\u1edf r\u1ed9ng Th\u01b0 \u0110i\u1ec7n t\u1eed \u0110a m\u1ee5c \u0111\u00edch\/B\u1ea3o m\u1eadt)<\/h4>\n\n\n<p>S\/MIME l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a kh\u00f3a c\u00f4ng khai th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 c\u00f4ng ty. N\u00f3 cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e3 h\u00f3a email t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i<\/li>\n\n\n\n<li>Ch\u1eef k\u00fd s\u1ed1<\/li>\n\n\n\n<li>X\u00e1c minh danh t\u00ednh th\u00f4ng qua ch\u1ee9ng ch\u1ec9<\/li>\n<\/ul>\n\n\n\n<p>S\/MIME t\u00edch h\u1ee3p tr\u1ef1c ti\u1ebfp v\u1edbi nhi\u1ec1u n\u1ec1n t\u1ea3ng email doanh nghi\u1ec7p v\u00e0 d\u1ef1a v\u00e0o c\u00e1c C\u01a1 quan Ch\u1ee9ng nh\u1eadn \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 x\u00e1c th\u1ef1c.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"why-email-encryption-is-essential\"><strong>T\u1ea1i sao M\u00e3 h\u00f3a Email l\u00e0 C\u1ea7n thi\u1ebft<\/strong><\/h3>\n\n\n<p>M\u00e3 h\u00f3a email \u0111\u1ea3m b\u1ea3o r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u1ec9 ng\u01b0\u1eddi nh\u1eadn d\u1ef1 ki\u1ebfn m\u1edbi c\u00f3 th\u1ec3 \u0111\u1ecdc tin nh\u1eafn<\/li>\n\n\n\n<li>D\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m kh\u00f4ng th\u1ec3 b\u1ecb ch\u1eb7n trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i<\/li>\n\n\n\n<li>N\u1ed9i dung email kh\u00f4ng th\u1ec3 b\u1ecb thay \u0111\u1ed5i m\u00e0 kh\u00f4ng b\u1ecb ph\u00e1t hi\u1ec7n<\/li>\n\n\n\n<li>Danh t\u00ednh ng\u01b0\u1eddi g\u1eedi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c minh<\/li>\n<\/ul>\n\n\n\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Giao d\u1ecbch t\u00e0i ch\u00ednh<\/li>\n\n\n\n<li>T\u00e0i li\u1ec7u ph\u00e1p l\u00fd<\/li>\n\n\n\n<li>Th\u00f4ng tin li\u00ean l\u1ea1c y t\u1ebf<\/li>\n\n\n\n<li>T\u00e0i s\u1ea3n tr\u00ed tu\u1ec7 c\u1ee7a c\u00f4ng ty<\/li>\n<\/ul>\n\n\n\n<p>Trong c\u00e1c khung an ninh m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, m\u00e3 h\u00f3a email th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ec3 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh, bao g\u1ed3m GDPR, HIPAA v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u t\u00e0i ch\u00ednh.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"public-wifi-security-protecting-encrypted-data-on-unsecured-networks\"><strong>B\u1ea3o m\u1eadt WiFi C\u00f4ng c\u1ed9ng: B\u1ea3o v\u1ec7 D\u1eef li\u1ec7u M\u00e3 h\u00f3a tr\u00ean M\u1ea1ng Kh\u00f4ng B\u1ea3o m\u1eadt<\/strong><\/h2>\n\n\n<p>M\u1ea1ng WiFi c\u00f4ng c\u1ed9ng r\u1ea5t ti\u1ec7n l\u1ee3i, nh\u01b0ng ch\u00fang mang l\u1ea1i nh\u1eefng r\u1ee7i ro an ninh m\u1ea1ng \u0111\u00e1ng k\u1ec3. S\u00e2n bay, kh\u00e1ch s\u1ea1n, qu\u00e1n c\u00e0 ph\u00ea v\u00e0 c\u00e1c \u0111\u1ecba \u0111i\u1ec3m c\u00f4ng c\u1ed9ng kh\u00e1c th\u01b0\u1eddng cung c\u1ea5p m\u1ea1ng kh\u00f4ng d\u00e2y m\u1edf ho\u1eb7c b\u1ea3o m\u1eadt k\u00e9m. V\u00ec nh\u1eefng m\u1ea1ng n\u00e0y \u0111\u01b0\u1ee3c chia s\u1ebb v\u00e0 \u0111\u00f4i khi kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, ch\u00fang l\u00e0 m\u1ee5c ti\u00eau h\u00e0ng \u0111\u1ea7u cho nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng t\u00ecm c\u00e1ch ch\u1eb7n d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m.<\/p>\n\n\n\n<p>N\u1ebfu kh\u00f4ng c\u00f3 b\u1ea3o v\u1ec7 th\u00edch h\u1ee3p, ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i v\u1edbi WiFi c\u00f4ng c\u1ed9ng d\u1ec5 b\u1ecb ch\u1eb7n d\u1eef li\u1ec7u, chi\u1ebfm \u0111o\u1ea1t phi\u00ean v\u00e0 tr\u1ed9m c\u1eafp th\u00f4ng tin x\u00e1c th\u1ef1c. Ngay c\u1ea3 d\u1eef li\u1ec7u m\u00e3 h\u00f3a c\u0169ng c\u00f3 th\u1ec3 g\u1eb7p r\u1ee7i ro n\u1ebfu c\u00e1c giao th\u1ee9c an to\u00e0n kh\u00f4ng \u0111\u01b0\u1ee3c tri\u1ec3n khai \u0111\u00fang c\u00e1ch.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"risks-associated-with-public-wifi\"><strong>R\u1ee7i ro Li\u00ean quan \u0110\u1ebfn WiFi C\u00f4ng c\u1ed9ng<\/strong><\/h3>\n\n<h4 class=\"wp-block-heading\" id=\"data-interception\">Ch\u1eb7n D\u1eef li\u1ec7u<\/h4>\n\n\n<p>M\u1ea1ng WiFi c\u00f4ng c\u1ed9ng c\u00f3 th\u1ec3 cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng b\u1eaft gi\u1eef l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng m\u00e3 h\u00f3a b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 sniffing g\u00f3i tin. N\u1ebfu c\u00e1c trang web ho\u1eb7c \u1ee9ng d\u1ee5ng kh\u00f4ng s\u1eed d\u1ee5ng c\u00e1c giao th\u1ee9c an to\u00e0n nh\u01b0 HTTPS ho\u1eb7c TLS, th\u00f4ng tin \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i\u2014bao g\u1ed3m th\u00f4ng tin \u0111\u0103ng nh\u1eadp, chi ti\u1ebft c\u00e1 nh\u00e2n ho\u1eb7c d\u1eef li\u1ec7u thanh to\u00e1n\u2014c\u00f3 th\u1ec3 b\u1ecb l\u1ed9.<\/p>\n\n\n\n<p>Ngay c\u1ea3 si\u00eau d\u1eef li\u1ec7u nh\u01b0 m\u1eabu duy\u1ec7t web c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thu th\u1eadp tr\u00ean c\u00e1c m\u1ea1ng kh\u00f4ng b\u1ea3o m\u1eadt.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"maninthemiddle-mitm-attacks\">T\u1ea5n c\u00f4ng Man-in-the-Middle (MITM)<\/h4>\n\n\n<p>Trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng man-in-the-middle, m\u1ed9t t\u00e1c nh\u00e2n \u0111\u1ed9c h\u1ea1i ch\u1eb7n giao ti\u1ebfp gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 h\u1ee3p ph\u00e1p. K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nghe l\u00e9n trao \u0111\u1ed5i d\u1eef li\u1ec7u<\/li>\n\n\n\n<li>Thay \u0111\u1ed5i th\u00f4ng tin \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i<\/li>\n\n\n\n<li>Chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c trang web gian l\u1eadn<\/li>\n\n\n\n<li>\u0110\u00e1nh c\u1eafp th\u00f4ng tin x\u00e1c th\u1ef1c x\u00e1c th\u1ef1c<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1eefng cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y \u0111\u1eb7c bi\u1ec7t nguy hi\u1ec3m tr\u00ean c\u00e1c m\u1ea1ng WiFi m\u1edf, n\u01a1i l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng c\u00f3 th\u1ec3 b\u1ecb thao t\u00fang d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"enhancing-public-wifi-security\"><strong>T\u0103ng c\u01b0\u1eddng B\u1ea3o m\u1eadt WiFi C\u00f4ng c\u1ed9ng<\/strong><\/h3>\n\n\n<p>\u0110\u1ec3 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u m\u00e3 h\u00f3a an to\u00e0n khi s\u1eed d\u1ee5ng WiFi c\u00f4ng c\u1ed9ng, c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t sau \u0111\u00e2y l\u00e0 c\u1ea7n thi\u1ebft:<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"use-a-vpn\">S\u1eed d\u1ee5ng VPN<\/h4>\n\n\n<p>M\u1ea1ng ri\u00eang \u1ea3o (VPN) m\u00e3 h\u00f3a to\u00e0n b\u1ed9 l\u01b0u l\u01b0\u1ee3ng internet gi\u1eefa m\u1ed9t thi\u1ebft b\u1ecb v\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 t\u1eeb xa an to\u00e0n. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng h\u1ea7m b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi b\u1ecb ch\u1eb7n, ngay c\u1ea3 tr\u00ean c\u00e1c m\u1ea1ng WiFi kh\u00f4ng an to\u00e0n.<\/p>\n\n\n\n<p>VPN \u0111\u1ea3m b\u1ea3o r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u1eef li\u1ec7u v\u1eabn \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i<\/li>\n\n\n\n<li>Ho\u1ea1t \u0111\u1ed9ng duy\u1ec7t web \u0111\u01b0\u1ee3c che gi\u1ea5u kh\u1ecfi k\u1ebb t\u1ea5n c\u00f4ng<\/li>\n\n\n\n<li>Th\u00f4ng tin li\u00ean l\u1ea1c nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7<\/li>\n<\/ul>\n\n\n<h4 class=\"wp-block-heading\" id=\"enable-https\">K\u00edch ho\u1ea1t HTTPS<\/h4>\n\n\n<p>Lu\u00f4n x\u00e1c minh r\u1eb1ng c\u00e1c trang web s\u1eed d\u1ee5ng HTTPS. HTTPS d\u1ef1a tr\u00ean m\u00e3 h\u00f3a TLS \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 m\u00e1y ch\u1ee7. C\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i hi\u1ec3n th\u1ecb bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a khi k\u1ebft n\u1ed1i TLS an to\u00e0n \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<p>N\u1ebfu m\u1ed9t trang web kh\u00f4ng s\u1eed d\u1ee5ng HTTPS, th\u00f4ng tin nh\u1ea1y c\u1ea3m kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0o.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"disable-file-sharing\">V\u00f4 hi\u1ec7u h\u00f3a Chia s\u1ebb T\u1ec7p<\/h4>\n\n\n<p>Khi k\u1ebft n\u1ed1i v\u1edbi WiFi c\u00f4ng c\u1ed9ng, chia s\u1ebb t\u1ec7p v\u00e0 c\u00e1c t\u00ednh n\u0103ng kh\u00e1m ph\u00e1 m\u1ea1ng n\u00ean \u0111\u01b0\u1ee3c v\u00f4 hi\u1ec7u h\u00f3a. \u0110\u1ec3 c\u00e1c d\u1ecbch v\u1ee5 n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t c\u00f3 th\u1ec3 l\u00e0m l\u1ed9 t\u1ec7p v\u00e0 thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9 cho ng\u01b0\u1eddi d\u00f9ng kh\u00e1c tr\u00ean c\u00f9ng m\u1ed9t m\u1ea1ng.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"enable-multifactor-authentication-mfa\">K\u00edch ho\u1ea1t X\u00e1c th\u1ef1c \u0110a y\u1ebfu t\u1ed1 (MFA)<\/h4>\n\n\n<p>Ngay c\u1ea3 khi th\u00f4ng tin \u0111\u0103ng nh\u1eadp b\u1ecb ch\u1eb7n, x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt th\u1ee9 hai. \u0110i\u1ec1u n\u00e0y ng\u0103n c\u1ea3n k\u1ebb t\u1ea5n c\u00f4ng truy c\u1eadp v\u00e0o t\u00e0i kho\u1ea3n m\u00e0 kh\u00f4ng c\u00f3 y\u1ebfu t\u1ed1 x\u00e1c minh b\u1ed5 sung.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"vpn-usage\"><strong>S\u1eed d\u1ee5ng VPN<\/strong><\/h3>\n\n\n<p>M\u1ea1ng Ri\u00eang \u1ea2o (VPN) \u0111\u00e3 tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 b\u1ea3o m\u1eadt trong th\u1eddi \u0111\u1ea1i k\u1ef9 thu\u1eadt s\u1ed1. VPN t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng h\u1ea7m an to\u00e0n gi\u1eefa thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 internet, m\u00e3 h\u00f3a t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u \u0111i qua n\u00f3. M\u00e3 h\u00f3a n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00f4ng tin nh\u1ea1y c\u1ea3m, nh\u01b0 d\u1eef li\u1ec7u c\u00e1 nh\u00e2n v\u00e0 ho\u1ea1t \u0111\u1ed9ng duy\u1ec7t web, v\u1eabn \u1ea9n kh\u1ecfi nh\u1eefng con m\u1eaft t\u00f2 m\u00f2, bao g\u1ed3m c\u1ea3 hacker v\u00e0 th\u1eadm ch\u00ed l\u00e0 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet.<\/p>\n\n\n\n<p>Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a VPN l\u00e0 che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, gi\u00fap duy tr\u00ec s\u1ef1 \u1ea9n danh tr\u1ef1c tuy\u1ebfn. Khi k\u1ebft n\u1ed1i v\u1edbi VPN, l\u01b0u l\u01b0\u1ee3ng internet c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn qua m\u1ed9t m\u00e1y ch\u1ee7 t\u1eeb xa, l\u00e0m cho n\u00f3 xu\u1ea5t hi\u1ec7n nh\u01b0 th\u1ec3 ng\u01b0\u1eddi d\u00f9ng \u0111ang truy c\u1eadp internet t\u1eeb m\u1ed9t v\u1ecb tr\u00ed kh\u00e1c. T\u00ednh n\u0103ng n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch \u0111\u1ec3 v\u01b0\u1ee3t qua c\u00e1c h\u1ea1n ch\u1ebf \u0111\u1ecba l\u00fd v\u1ec1 n\u1ed9i dung v\u00e0 tr\u00e1nh ki\u1ec3m duy\u1ec7t \u1edf m\u1ed9t s\u1ed1 khu v\u1ef1c.<\/p>\n\n\n\n<p>VPN s\u1eed d\u1ee5ng nhi\u1ec1u giao th\u1ee9c m\u00e3 h\u00f3a kh\u00e1c nhau \u0111\u1ec3 b\u1ea3o m\u1eadt truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u. C\u00e1c giao th\u1ee9c ph\u1ed5 bi\u1ebfn bao g\u1ed3m OpenVPN, L2TP\/IPsec v\u00e0 IKEv2\/IPsec. OpenVPN \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt, trong khi IKEv2\/IPsec \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng v\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a n\u00f3, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng. Vi\u1ec7c l\u1ef1a ch\u1ecdn giao th\u1ee9c c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a k\u1ebft n\u1ed1i VPN, l\u00e0m cho vi\u1ec7c ch\u1ecdn d\u1ecbch v\u1ee5 VPN cung c\u1ea5p ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd tr\u1edf n\u00ean quan tr\u1ecdng.<\/p>\n\n\n\n<p>Ngo\u00e0i m\u00e3 h\u00f3a, VPN c\u00f2n cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt kh\u00e1c nh\u01b0 c\u00f4ng t\u1eafc ng\u1eaft v\u00e0 b\u1ea3o v\u1ec7 r\u00f2 r\u1ec9 DNS. C\u00f4ng t\u1eafc ng\u1eaft t\u1ef1 \u0111\u1ed9ng ng\u1eaft k\u1ebft n\u1ed1i ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi internet n\u1ebfu k\u1ebft n\u1ed1i VPN b\u1ecb gi\u00e1n \u0111o\u1ea1n, ng\u0103n ch\u1eb7n d\u1eef li\u1ec7u kh\u00f4ng m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i. B\u1ea3o v\u1ec7 r\u00f2 r\u1ec9 DNS \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c truy v\u1ea5n DNS \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn qua VPN, ng\u0103n c\u1ea3n ISP c\u1ee7a ng\u01b0\u1eddi d\u00f9ng theo d\u00f5i ho\u1ea1t \u0111\u1ed9ng duy\u1ec7t web c\u1ee7a h\u1ecd.<\/p>\n\n\n\n<p>VPN kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho quy\u1ec1n ri\u00eang t\u01b0 c\u00e1 nh\u00e2n m\u00e0 c\u00f2n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o m\u1eadt doanh nghi\u1ec7p. C\u00e1c doanh nghi\u1ec7p th\u01b0\u1eddng s\u1eed d\u1ee5ng VPN \u0111\u1ec3 cung c\u1ea5p cho nh\u00e2n vi\u00ean t\u1eeb xa quy\u1ec1n truy c\u1eadp an to\u00e0n v\u00e0o m\u1ea1ng n\u1ed9i b\u1ed9 c\u1ee7a c\u00f4ng ty. C\u1ea5u h\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u doanh nghi\u1ec7p nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi truy c\u1eadp tr\u00e1i ph\u00e9p, ngay c\u1ea3 khi nh\u00e2n vi\u00ean l\u00e0m vi\u1ec7c t\u1eeb c\u00e1c m\u1ea1ng c\u00f4ng c\u1ed9ng ho\u1eb7c kh\u00f4ng b\u1ea3o m\u1eadt.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"full-disk-encryption\"><strong>M\u00e3 h\u00f3a To\u00e0n b\u1ed9 \u0110\u0129a<\/strong><\/h3>\n\n\n<p>M\u00e3 h\u00f3a To\u00e0n b\u1ed9 \u0110\u0129a (FDE) l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt b\u1ea3o v\u1ec7 t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb b\u1eb1ng c\u00e1ch chuy\u1ec3n \u0111\u1ed5i n\u00f3 th\u00e0nh v\u0103n b\u1ea3n m\u00e3 h\u00f3a. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p kh\u00f4ng th\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u, ngay c\u1ea3 khi h\u1ecd c\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb m\u1ed9t c\u00e1ch v\u1eadt l\u00fd. FDE \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m tr\u00ean m\u00e1y t\u00ednh x\u00e1ch tay, \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng kh\u00e1c c\u00f3 nguy c\u01a1 b\u1ecb tr\u1ed9m c\u1eafp ho\u1eb7c m\u1ea5t m\u00e1t cao h\u01a1n.<\/p>\n\n\n\n<p>Khi FDE \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, to\u00e0n b\u1ed9 \u1ed5 l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, bao g\u1ed3m h\u1ec7 \u0111i\u1ec1u h\u00e0nh, \u1ee9ng d\u1ee5ng v\u00e0 d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 kh\u1edfi \u0111\u1ed9ng ho\u1eb7c truy c\u1eadp m\u00e0 kh\u00f4ng c\u00f3 th\u00f4ng tin x\u00e1c th\u1ef1c x\u00e1c th\u1ef1c \u0111\u00fang, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1eadt kh\u1ea9u ho\u1eb7c x\u00e1c minh sinh tr\u1eafc h\u1ecdc. FDE th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai \u1edf c\u1ea5p ph\u1ea7n c\u1ee9ng, s\u1eed d\u1ee5ng c\u00e1c chip m\u00e3 h\u00f3a chuy\u00ean d\u1ee5ng ho\u1eb7c c\u00e1c gi\u1ea3i ph\u00e1p ph\u1ea7n m\u1ec1m.<\/p>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng l\u1ee3i th\u1ebf ch\u00ednh c\u1ee7a FDE l\u00e0 n\u00f3 cung c\u1ea5p b\u1ea3o v\u1ec7 to\u00e0n di\u1ec7n m\u00e0 kh\u00f4ng y\u00eau c\u1ea7u s\u1ef1 can thi\u1ec7p c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t khi \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a l\u00e0 minh b\u1ea1ch \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng, cho ph\u00e9p h\u1ecd ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb nh\u01b0 b\u00ecnh th\u01b0\u1eddng. S\u1ef1 d\u1ec5 s\u1eed d\u1ee5ng n\u00e0y l\u00e0m cho FDE tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn cho c\u1ea3 ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n v\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c mu\u1ed1n t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>FDE \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh hi\u1ec7n \u0111\u1ea1i, bao g\u1ed3m Windows, macOS v\u00e0 Linux. Windows s\u1eed d\u1ee5ng BitLocker cho FDE, trong khi macOS cung c\u1ea5p FileVault. C\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p n\u00e0y \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh k\u00edch ho\u1ea1t v\u00e0 qu\u1ea3n l\u00fd m\u00e3 h\u00f3a to\u00e0n b\u1ed9 \u0111\u0129a, l\u00e0m cho n\u00f3 d\u1ec5 ti\u1ebfp c\u1eadn v\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u00f3 tr\u00ecnh \u0111\u1ed9 k\u1ef9 thu\u1eadt kh\u00e1c nhau.<\/p>\n\n\n\n<p>M\u1eb7c d\u00f9 c\u00f3 l\u1ee3i \u00edch, FDE kh\u00f4ng ph\u1ea3i kh\u00f4ng c\u00f3 h\u1ea1n ch\u1ebf. N\u00f3 kh\u00f4ng b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i ho\u1eb7c d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean c\u00e1c thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i nh\u01b0 \u1ed5 USB. Ngo\u00e0i ra, FDE c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng, m\u1eb7c d\u00f9 hi\u1ec7u \u1ee9ng n\u00e0y th\u01b0\u1eddng kh\u00f4ng \u0111\u00e1ng k\u1ec3 v\u1edbi ph\u1ea7n c\u1ee9ng hi\u1ec7n \u0111\u1ea1i. Ng\u01b0\u1eddi d\u00f9ng c\u0169ng ph\u1ea3i nh\u1edb th\u00f4ng tin x\u00e1c th\u1ef1c x\u00e1c th\u1ef1c c\u1ee7a h\u1ecd, v\u00ec m\u1ea5t quy\u1ec1n truy c\u1eadp v\u00e0o nh\u1eefng th\u00f4ng tin n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t d\u1eef li\u1ec7u v\u0129nh vi\u1ec5n.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"wireless-network-security\"><strong>B\u1ea3o m\u1eadt M\u1ea1ng Kh\u00f4ng d\u00e2y<\/strong><\/h3>\n\n\n<p>M\u1ea1ng kh\u00f4ng d\u00e2y ph\u1ed5 bi\u1ebfn trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 ng\u00e0y nay, cung c\u1ea5p truy c\u1eadp internet ti\u1ec7n l\u1ee3i cho nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb. Tuy nhi\u00ean, s\u1ef1 ti\u1ec7n l\u1ee3i c\u1ee7a truy c\u1eadp kh\u00f4ng d\u00e2y \u0111i k\u00e8m v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c b\u1ea3o m\u1eadt c\u1ea7n \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m v\u00e0 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<p>B\u1ea3o m\u1eadt m\u1ed9t m\u1ea1ng kh\u00f4ng d\u00e2y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c c\u1ea5u h\u00ecnh router kh\u00f4ng d\u00e2y. Thay \u0111\u1ed5i m\u1eadt kh\u1ea9u qu\u1ea3n tr\u1ecb vi\u00ean m\u1eb7c \u0111\u1ecbnh l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan tr\u1ecdng, v\u00ec th\u00f4ng tin x\u00e1c th\u1ef1c m\u1eb7c \u0111\u1ecbnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00f4ng khai v\u00e0 c\u00f3 th\u1ec3 b\u1ecb k\u1ebb t\u1ea5n c\u00f4ng khai th\u00e1c. K\u00edch ho\u1ea1t m\u00e3 h\u00f3a WPA3 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb, v\u00ec n\u00f3 cung c\u1ea5p b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd nh\u1ea5t cho c\u00e1c m\u1ea1ng kh\u00f4ng d\u00e2y. N\u1ebfu WPA3 kh\u00f4ng c\u00f3 s\u1eb5n, WPA2 n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t ti\u00eau chu\u1ea9n t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n<p>V\u00f4 hi\u1ec7u h\u00f3a ph\u00e1t s\u00f3ng SSID c\u0169ng c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt b\u1eb1ng c\u00e1ch l\u00e0m cho m\u1ea1ng \u00edt hi\u1ec3n th\u1ecb h\u01a1n v\u1edbi c\u00e1c k\u1ebb t\u1ea5n c\u00f4ng ti\u1ec1m n\u0103ng. M\u1eb7c d\u00f9 bi\u1ec7n ph\u00e1p n\u00e0y kh\u00f4ng ng\u0103n ch\u1eb7n c\u00e1c hacker quy\u1ebft t\u00e2m ph\u00e1t hi\u1ec7n m\u1ea1ng, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c n\u1ed7 l\u1ef1c kh\u00f4ng ch\u00ednh th\u1ee9c \u0111\u1ec3 truy c\u1eadp tr\u00e1i ph\u00e9p. Ngo\u00e0i ra, k\u00edch ho\u1ea1t l\u1ecdc \u0111\u1ecba ch\u1ec9 MAC cho ph\u00e9p router h\u1ea1n ch\u1ebf truy c\u1eadp m\u1ea1ng cho c\u00e1c thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt h\u01a1n n\u1eefa.<\/p>\n\n\n\n<p>C\u1eadp nh\u1eadt firmware c\u1ee7a router th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c l\u1ed7 h\u1ed5ng v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt m\u1edbi nh\u1ea5t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. Nhi\u1ec1u router cung c\u1ea5p c\u1eadp nh\u1eadt t\u1ef1 \u0111\u1ed9ng, \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh n\u00e0y cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng th\u01b0\u1eddng xuy\u00ean k\u1ebft n\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng Wi-Fi c\u00f4ng c\u1ed9ng, s\u1eed d\u1ee5ng VPN \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i v\u00e0 b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i nghe l\u00e9n. C\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u0169ng n\u00ean \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 qu\u00ean m\u1ea1ng sau khi s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u0103n ch\u1eb7n k\u1ebft n\u1ed1i t\u1ef1 \u0111\u1ed9ng v\u1edbi c\u00e1c m\u1ea1ng c\u00f3 th\u1ec3 b\u1ecb x\u00e2m ph\u1ea1m.<\/p>\n\n\n\n<p>C\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 m\u1ea1ng kh\u00f4ng d\u00e2y l\u1edbn h\u01a1n c\u00f3 th\u1ec3 tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt b\u1ed5 sung, ch\u1eb3ng h\u1ea1n nh\u01b0 ph\u00e2n \u0111o\u1ea1n m\u1ea1ng v\u00e0 s\u1eed d\u1ee5ng c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt c\u1ea5p doanh nghi\u1ec7p. Ph\u00e2n \u0111o\u1ea1n m\u1ea1ng li\u00ean quan \u0111\u1ebfn vi\u1ec7c chia m\u1ea1ng th\u00e0nh c\u00e1c ph\u00e2n \u0111o\u1ea1n ri\u00eang bi\u1ec7t, m\u1ed7i ph\u00e2n \u0111o\u1ea1n c\u00f3 ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt ri\u00eang. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y gi\u1edbi h\u1ea1n t\u00e1c \u0111\u1ed9ng ti\u1ec1m n\u0103ng c\u1ee7a m\u1ed9t vi ph\u1ea1m b\u1ea3o m\u1eadt, v\u00ec k\u1ebb t\u1ea5n c\u00f4ng kh\u00f4ng th\u1ec3 d\u1ec5 d\u00e0ng di chuy\u1ec3n ngang trong m\u1ea1ng.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"encryption-standards\"><strong>Ti\u00eau chu\u1ea9n M\u00e3 h\u00f3a<\/strong><\/h2>\n\n\n<p>Ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u an to\u00e0n, cung c\u1ea5p c\u00e1c thu\u1eadt to\u00e1n v\u00e0 giao th\u1ee9c c\u1ea7n thi\u1ebft \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i v\u0103n b\u1ea3n r\u00f5 th\u00e0nh v\u0103n b\u1ea3n m\u00e3 h\u00f3a. C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u v\u1eabn b\u1ea3o m\u1eadt v\u00e0 to\u00e0n v\u1eb9n, ngay c\u1ea3 khi \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i qua c\u00e1c k\u00eanh kh\u00f4ng an to\u00e0n.<\/p>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 Ti\u00eau chu\u1ea9n M\u00e3 h\u00f3a Ti\u00ean ti\u1ebfn (AES), \u0111\u01b0\u1ee3c c\u00e1c ch\u00ednh ph\u1ee7, t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh v\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c kh\u00e1c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m. AES l\u00e0 m\u1ed9t thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng, c\u00f3 ngh\u0129a l\u00e0 n\u00f3 s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t kh\u00f3a cho c\u1ea3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3. N\u00f3 cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc kh\u00f3a 128, 192 v\u00e0 256 bit, v\u1edbi k\u00edch th\u01b0\u1edbc kh\u00f3a l\u1edbn h\u01a1n cung c\u1ea5p b\u1ea3o m\u1eadt cao h\u01a1n.<\/p>\n\n\n\n<p>RSA l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a n\u1ed5i b\u1eadt kh\u00e1c, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i. Kh\u00f4ng gi\u1ed1ng nh\u01b0 AES, RSA l\u00e0 m\u1ed9t thu\u1eadt to\u00e1n m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng, s\u1eed d\u1ee5ng m\u1ed9t c\u1eb7p kh\u00f3a, m\u1ed9t kh\u00f3a c\u00f4ng khai \u0111\u1ec3 m\u00e3 h\u00f3a v\u00e0 m\u1ed9t kh\u00f3a ri\u00eang t\u01b0 \u0111\u1ec3 gi\u1ea3i m\u00e3. \u0110\u1eb7c \u0111i\u1ec3m n\u00e0y l\u00e0m cho RSA l\u00fd t\u01b0\u1edfng cho vi\u1ec7c trao \u0111\u1ed5i kh\u00f3a an to\u00e0n, cho ph\u00e9p c\u00e1c b\u00ean thi\u1ebft l\u1eadp m\u1ed9t b\u00ed m\u1eadt chung qua m\u1ed9t k\u00eanh kh\u00f4ng an to\u00e0n.<\/p>\n\n\n\n<p>Giao th\u1ee9c trao \u0111\u1ed5i kh\u00f3a Diffie-Hellman th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi RSA \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n giao ti\u1ebfp an to\u00e0n. Giao th\u1ee9c n\u00e0y cho ph\u00e9p hai b\u00ean t\u1ea1o ra m\u1ed9t kh\u00f3a b\u00ed m\u1eadt chung m\u00e0 kh\u00f4ng c\u1ea7n truy\u1ec1n t\u1ea3i kh\u00f3a \u0111\u00f3, gi\u1ea3m nguy c\u01a1 b\u1ecb ch\u1eb7n.<\/p>\n\n\n\n<p>M\u00e3 h\u00f3a \u0110\u01b0\u1eddng cong Elliptic (ECC) \u0111ang ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn nh\u01b0 m\u1ed9t s\u1ef1 thay th\u1ebf cho RSA, cung c\u1ea5p b\u1ea3o m\u1eadt t\u01b0\u01a1ng t\u1ef1 v\u1edbi k\u00edch th\u01b0\u1edbc kh\u00f3a nh\u1ecf h\u01a1n. ECC \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p cho c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 IoT, n\u01a1i t\u00e0i nguy\u00ean t\u00ednh to\u00e1n v\u00e0 ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng b\u1ecb h\u1ea1n ch\u1ebf.<\/p>\n\n\n\n<p>C\u00e1c ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a li\u00ean t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c m\u1ed1i \u0111e d\u1ecda v\u00e0 l\u1ed7 h\u1ed5ng m\u1edbi n\u1ed5i. Vi\u1ec7n Ti\u00eau chu\u1ea9n v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ed1c gia (NIST) \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 duy tr\u00ec c\u00e1c ti\u00eau chu\u1ea9n n\u00e0y, \u0111\u1ea3m b\u1ea3o ch\u00fang \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u b\u1ea3o m\u1eadt hi\u1ec7n \u0111\u1ea1i nghi\u00eam ng\u1eb7t.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"secure-web-browsing\"><strong>Duy\u1ec7t Web An to\u00e0n<\/strong><\/h2>\n\n\n<p>Duy\u1ec7t web an to\u00e0n l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin c\u00e1 nh\u00e2n v\u00e0 duy tr\u00ec quy\u1ec1n ri\u00eang t\u01b0 tr\u1ef1c tuy\u1ebfn. Khi ng\u01b0\u1eddi d\u00f9ng duy\u1ec7t internet, h\u1ecd th\u01b0\u1eddng g\u1eb7p c\u00e1c trang web thu th\u1eadp d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00f4ng tin \u0111\u0103ng nh\u1eadp, th\u00f4ng tin thanh to\u00e1n v\u00e0 chi ti\u1ebft c\u00e1 nh\u00e2n. \u0110\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i m\u1ed9t c\u00e1ch an to\u00e0n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 vi ph\u1ea1m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh \u0111\u1ec3 b\u1ea3o m\u1eadt duy\u1ec7t web l\u00e0 s\u1eed d\u1ee5ng HTTPS, m\u00e3 h\u00f3a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i gi\u1eefa tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 c\u1ee7a trang web. HTTPS d\u1ef1a tr\u00ean c\u00e1c giao th\u1ee9c SSL\/TLS \u0111\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t k\u1ebft n\u1ed1i an to\u00e0n, \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u v\u1eabn b\u1ea3o m\u1eadt v\u00e0 to\u00e0n v\u1eb9n trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i. C\u00e1c trang web s\u1eed d\u1ee5ng HTTPS hi\u1ec3n th\u1ecb bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a tr\u00ean thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t, ch\u1ec9 ra r\u1eb1ng k\u1ebft n\u1ed1i l\u00e0 an to\u00e0n.<\/p>\n\n\n\n<p>Ngo\u00e0i HTTPS, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt duy\u1ec7t web c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch k\u00edch ho\u1ea1t c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt v\u00e0 ti\u1ec7n \u00edch m\u1edf r\u1ed9ng tr\u00ecnh duy\u1ec7t. H\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u cung c\u1ea5p c\u00e1c b\u1ea3o v\u1ec7 t\u00edch h\u1ee3p ch\u1ed1ng l\u1ea1i l\u1eeba \u0111\u1ea3o v\u00e0 ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i, c\u1ea3nh b\u00e1o ng\u01b0\u1eddi d\u00f9ng v\u1ec1 c\u00e1c trang web c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i. C\u00e1c ti\u1ec7n \u00edch m\u1edf r\u1ed9ng b\u1ea3o m\u1eadt, ch\u1eb3ng h\u1ea1n nh\u01b0 ch\u1eb7n qu\u1ea3ng c\u00e1o v\u00e0 ch\u1eb7n k\u1ecbch b\u1ea3n, c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 h\u01a1n n\u1eefa b\u1eb1ng c\u00e1ch ng\u0103n ch\u1eb7n theo d\u00f5i kh\u00f4ng mong mu\u1ed1n v\u00e0 ch\u1eb7n n\u1ed9i dung \u0111\u1ed9c h\u1ea1i.<\/p>\n\n\n\n<p>Ng\u01b0\u1eddi d\u00f9ng c\u0169ng n\u00ean c\u1ea9n th\u1eadn khi truy c\u1eadp c\u00e1c trang web y\u00eau c\u1ea7u th\u00f4ng tin c\u00e1 nh\u00e2n. X\u00e1c minh t\u00ednh h\u1ee3p ph\u00e1p c\u1ee7a trang web v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u00f3 c\u00f3 ch\u1ee9ng ch\u1ec9 SSL h\u1ee3p l\u1ec7 c\u00f3 th\u1ec3 gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o v\u00e0 tr\u1ed9m c\u1eafp d\u1eef li\u1ec7u. Ngo\u00e0i ra, s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh, duy nh\u1ea5t cho m\u1ed7i t\u00e0i kho\u1ea3n tr\u1ef1c tuy\u1ebfn gi\u1ea3m nguy c\u01a1 truy c\u1eadp tr\u00e1i ph\u00e9p trong tr\u01b0\u1eddng h\u1ee3p vi ph\u1ea1m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng di \u0111\u1ed9ng, duy\u1ec7t web an to\u00e0n c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m. C\u00e1c tr\u00ecnh duy\u1ec7t di \u0111\u1ed9ng th\u01b0\u1eddng cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c tr\u00ecnh duy\u1ec7t m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng duy\u1ec7t internet an to\u00e0n tr\u00ean c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u1ee7a h\u1ecd. S\u1eed d\u1ee5ng VPN tr\u00ean c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt h\u01a1n n\u1eefa b\u1eb1ng c\u00e1ch m\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i v\u00e0 che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>Cu\u1ed1i c\u00f9ng, ng\u01b0\u1eddi d\u00f9ng n\u00ean nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c c\u00e1c r\u1ee7i ro li\u00ean quan \u0111\u1ebfn c\u00e1c m\u1ea1ng Wi-Fi c\u00f4ng c\u1ed9ng. C\u00e1c m\u1ea1ng n\u00e0y th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt, khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng d\u1ec5 d\u00e0ng ch\u1eb7n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i qua ch\u00fang. S\u1eed d\u1ee5ng VPN v\u00e0 tr\u00e1nh c\u00e1c giao d\u1ecbch nh\u1ea1y c\u1ea3m tr\u00ean Wi-Fi c\u00f4ng c\u1ed9ng c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m duy\u1ec7t web an to\u00e0n.<\/p>\n\n\n\n<p>T\u00f3m l\u1ea1i, duy\u1ec7t web an to\u00e0n bao g\u1ed3m s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa m\u00e3 h\u00f3a, c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt tr\u00ecnh duy\u1ec7t v\u00e0 s\u1ef1 c\u1ea3nh gi\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c h\u00e0nh n\u00e0y, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin c\u00e1 nh\u00e2n c\u1ee7a m\u00ecnh v\u00e0 duy tr\u00ec quy\u1ec1n ri\u00eang t\u01b0 trong m\u1ed9t th\u1ebf gi\u1edbi ng\u00e0y c\u00e0ng k\u1ebft n\u1ed1i. T\u1ea7m quan tr\u1ecdng c\u1ee7a quy\u1ec1n ri\u00eang t\u01b0 k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u1eb7c bi\u1ec7t c\u00f3 li\u00ean quan trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u00e0 danh t\u00ednh c\u00f4ng c\u1ed9ng tr\u1edf th\u00e0nh m\u1ed9t cu\u1ed9c th\u1ea3o lu\u1eadn to\u00e0n c\u1ea7u, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00ed \u1ea9n xung quanh danh t\u00ednh th\u1ef1c s\u1ef1 c\u1ee7a Vessel t\u1eeb Sleep Token, \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1 chi ti\u1ebft t\u1ea1i Who Is <a href=\"https:\/\/leofaulkner.net\/\">Leo Faulkner<\/a>? Danh t\u00ednh Vessel c\u1ee7a Sleep Token \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"data-protection-and-cybersecurity-measures\"><strong>B\u1ea3o v\u1ec7 D\u1eef li\u1ec7u v\u00e0 Bi\u1ec7n ph\u00e1p An ninh M\u1ea1ng<\/strong><\/h2>\n\n\n<p>Trong th\u1eddi \u0111\u1ea1i m\u00e0 giao ti\u1ebfp k\u1ef9 thu\u1eadt s\u1ed1 ph\u1ed5 bi\u1ebfn, duy tr\u00ec b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u m\u1ea1nh m\u1ebd l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. Khi d\u1eef li\u1ec7u di chuy\u1ec3n qua c\u00e1c m\u1ea1ng, n\u00f3 d\u1ec5 b\u1ecb ch\u1eb7n b\u1edfi c\u00e1c t\u00e1c nh\u00e2n \u0111\u1ed9c h\u1ea1i. Do \u0111\u00f3, vi\u1ec7c tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p an ninh m\u1ea1ng hi\u1ec7u qu\u1ea3 l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m kh\u1ecfi truy c\u1eadp tr\u00e1i ph\u00e9p. \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c gi\u1ea3i ph\u00e1p c\u00f4ng ngh\u1ec7, th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u00e0 ch\u00ednh s\u00e1ch \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"network-security-and-encryption-protocols\"><strong>B\u1ea3o m\u1eadt M\u1ea1ng v\u00e0 Giao th\u1ee9c M\u00e3 h\u00f3a<\/strong><\/h3>\n\n\n<p>B\u1ea3o m\u1eadt m\u1ea1ng l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a b\u1ea5t k\u1ef3 chi\u1ebfn l\u01b0\u1ee3c an ninh m\u1ea1ng n\u00e0o. N\u00f3 bao g\u1ed3m c\u00e1c bi\u1ec7n ph\u00e1p \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n, b\u1ea3o m\u1eadt v\u00e0 t\u00ednh s\u1eb5n c\u00f3 c\u1ee7a d\u1eef li\u1ec7u khi n\u00f3 \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i qua c\u00e1c m\u1ea1ng. C\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh n\u00e0y, chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u v\u0103n b\u1ea3n r\u00f5 th\u00e0nh \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai kh\u00f4ng s\u1edf h\u1eefu kh\u00f3a gi\u1ea3i m\u00e3. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ngay c\u1ea3 khi d\u1eef li\u1ec7u b\u1ecb ch\u1eb7n, n\u00f3 v\u1eabn an to\u00e0n kh\u1ecfi truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n\n\n\n<p>C\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a nh\u01b0 TLS (Transport Layer Security) v\u00e0 SSL (Secure Sockets Layer) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 b\u1ea3o m\u1eadt truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u qua internet. C\u00e1c giao th\u1ee9c n\u00e0y thi\u1ebft l\u1eadp m\u1ed9t li\u00ean k\u1ebft m\u00e3 h\u00f3a gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c trao \u0111\u1ed5i v\u1eabn b\u1ea3o m\u1eadt v\u00e0 kh\u00f4ng th\u1ec3 b\u1ecb gi\u1ea3 m\u1ea1o. Ngo\u00e0i ra, IPsec (Internet Protocol Security) cung c\u1ea5p m\u00e3 h\u00f3a \u1edf c\u1ea5p \u0111\u1ed9 m\u1ea1ng, b\u1ea3o m\u1eadt c\u00e1c g\u00f3i d\u1eef li\u1ec7u khi ch\u00fang di chuy\u1ec3n qua c\u00e1c m\u1ea1ng IP.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"mobile-security\"><strong>B\u1ea3o m\u1eadt Di \u0111\u1ed9ng<\/strong><\/h3>\n\n\n<p>V\u1edbi s\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 m\u00e1y t\u00ednh b\u1ea3ng, b\u1ea3o m\u1eadt di \u0111\u1ed9ng \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t kh\u00eda c\u1ea1nh kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u. C\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy c\u1eadp th\u00f4ng tin nh\u1ea1y c\u1ea3m, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau h\u00e0ng \u0111\u1ea7u cho c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro n\u00e0y, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho m\u00f4i tr\u01b0\u1eddng di \u0111\u1ed9ng.<\/p>\n\n\n\n<p>B\u1ea3o m\u1eadt di \u0111\u1ed9ng li\u00ean quan \u0111\u1ebfn vi\u1ec7c b\u1ea3o v\u1ec7 ch\u00ednh thi\u1ebft b\u1ecb, d\u1eef li\u1ec7u m\u00e0 n\u00f3 l\u01b0u tr\u1eef v\u00e0 c\u00e1c m\u1ea1ng m\u00e0 n\u00f3 k\u1ebft n\u1ed1i. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a m\u00e3 h\u00f3a, ph\u01b0\u01a1ng ph\u00e1p x\u00e1c th\u1ef1c an to\u00e0n v\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean. Ngo\u00e0i ra, c\u00e1c gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd thi\u1ebft b\u1ecb di \u0111\u1ed9ng (MDM) c\u00f3 th\u1ec3 gi\u00fap c\u00e1c t\u1ed5 ch\u1ee9c th\u1ef1c thi ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt v\u00e0 gi\u00e1m s\u00e1t vi\u1ec7c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111\u1ec3 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\"><strong>C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p<\/strong><\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"what-internet-protocol-is-used-to-transmit-encrypted-data\"><strong>Giao th\u1ee9c internet n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u m\u00e3 h\u00f3a?<\/strong><\/h3>\n\n\n<p>Giao th\u1ee9c internet ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u m\u00e3 h\u00f3a l\u00e0 TLS (Transport Layer Security). TLS l\u00e0 ng\u01b0\u1eddi k\u1ebf nhi\u1ec7m c\u1ee7a SSL (Secure Sockets Layer) v\u00e0 cung c\u1ea5p m\u1ed9t k\u00eanh an to\u00e0n cho truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u qua internet. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i, \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 to\u00e0n v\u1eb9n.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"which-protocol-sends-encrypted-data\"><strong>Giao th\u1ee9c n\u00e0o g\u1eedi d\u1eef li\u1ec7u m\u00e3 h\u00f3a?<\/strong><\/h3>\n\n\n<p>TLS (Transport Layer Security) l\u00e0 giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 g\u1eedi d\u1eef li\u1ec7u m\u00e3 h\u00f3a. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m duy\u1ec7t web, email v\u00e0 nh\u1eafn tin t\u1ee9c th\u1eddi, \u0111\u1ec3 b\u1ea3o m\u1eadt truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u v\u00e0 b\u1ea3o v\u1ec7 n\u00f3 kh\u1ecfi b\u1ecb ch\u1eb7n b\u1edfi c\u00e1c b\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"which-protocol-is-used-for-encryption\"><strong>Giao th\u1ee9c n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u00e3 h\u00f3a?<\/strong><\/h3>\n\n\n<p>M\u1ed9t s\u1ed1 giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u00e3 h\u00f3a, t\u00f9y thu\u1ed9c v\u00e0o ng\u1eef c\u1ea3nh. TLS (Transport Layer Security) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i qua internet. IPsec (Internet Protocol Security) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u \u1edf l\u1edbp m\u1ea1ng. Ngo\u00e0i ra, c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a t\u1ec7p nh\u01b0 AES (Advanced Encryption Standard) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u khi l\u01b0u tr\u1eef.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"is-aes256-still-considered-secure\"><strong>AES-256 c\u00f3 c\u00f2n \u0111\u01b0\u1ee3c coi l\u00e0 an to\u00e0n kh\u00f4ng?<\/strong><\/h3>\n\n\n<p>C\u00f3, AES-256 v\u1eabn \u0111\u01b0\u1ee3c coi l\u00e0 an to\u00e0n v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m. N\u00f3 l\u00e0 m\u1ed9t thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng s\u1eed d\u1ee5ng \u0111\u1ed9 d\u00e0i kh\u00f3a 256 bit, l\u00e0m cho n\u00f3 r\u1ea5t kh\u00f3 b\u1ecb t\u1ea5n c\u00f4ng brute-force. AES-256 \u0111\u01b0\u1ee3c Vi\u1ec7n Ti\u00eau chu\u1ea9n v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ed1c gia (NIST) ph\u00ea duy\u1ec7t v\u00e0 \u0111\u01b0\u1ee3c coi l\u00e0 ti\u00eau chu\u1ea9n v\u00e0ng trong m\u00e3 h\u00f3a.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"key-takeaways\"><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh<\/strong><\/h2>\n\n\n<p>Trong th\u1eddi \u0111\u1ea1i k\u1ef9 thu\u1eadt s\u1ed1, b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi truy c\u1eadp tr\u00e1i ph\u00e9p quan tr\u1ecdng h\u01a1n bao gi\u1edd h\u1ebft. Tri\u1ec3n khai c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p an ninh m\u1ea1ng c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u00e1ng k\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u v\u00e0 b\u1ea3o m\u1eadt truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u. B\u1ea3o m\u1eadt m\u1ea1ng, b\u1ea3o m\u1eadt di \u0111\u1ed9ng v\u00e0 c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a nh\u01b0 TLS v\u00e0 AES l\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu c\u1ee7a m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u to\u00e0n di\u1ec7n. B\u1eb1ng c\u00e1ch c\u1eadp nh\u1eadt th\u00f4ng tin v\u1ec1 c\u00e1c th\u1ef1c h\u00e0nh v\u00e0 c\u00f4ng ngh\u1ec7 b\u1ea3o m\u1eadt m\u1edbi nh\u1ea5t, c\u00e1c c\u00e1 nh\u00e2n v\u00e0 t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n th\u00f4ng tin nh\u1ea1y c\u1ea3m c\u1ee7a m\u00ecnh tr\u01b0\u1edbc c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u1ea3o m\u1eadt t\u1ea7ng v\u1eadn chuy\u1ec3n (TLS) l\u00e0 giao th\u1ee9c internet ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u00e3 h\u00f3a m\u1ed9t c\u00e1ch an to\u00e0n. H\u01b0\u1edbng d\u1eabn ho\u00e0n ch\u1ec9nh n\u00e0y gi\u1ea3i th\u00edch c\u00e1ch TLS, HTTPS, ch\u1ee9ng ch\u1ec9 SSL, VPN v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a nh\u01b0 AES b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m trong qu\u00e1 tr\u00ecnh giao ti\u1ebfp tr\u1ef1c tuy\u1ebfn.<\/p>","protected":false},"author":3,"featured_media":5255,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[77,59,72,73,71,74,76,70,69,75],"class_list":["post-5252","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cybersecurity","tag-aes-encryption","tag-cybersecurity","tag-data-encryption","tag-encrypted-data-transmission","tag-https","tag-network-security","tag-public-wifi-security","tag-tls-1-3","tag-transport-layer-security","tag-vpn-security","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Which Internet Protocol Is Used to Transmit Encrypted Data? 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