{"id":4107,"date":"2025-10-21T11:12:00","date_gmt":"2025-10-21T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/secure-shell-ssh-encrypted-remote-access-and-file-transfer\/"},"modified":"2026-06-22T06:07:43","modified_gmt":"2026-06-22T06:07:43","slug":"secure-shell-ssh-encrypted-remote-access-and-file-transfer","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/secure-shell-ssh-encrypted-remote-access-and-file-transfer","title":{"rendered":"M\u1edf Kh\u00f3a Truy C\u1eadp An To\u00e0n: Kh\u00e1m Ph\u00e1 S\u00e2u Giao Th\u1ee9c Shell An To\u00e0n (SSH)"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1408\" height=\"768\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c5c1d8dd3fb342ab89fed0f34a3183d0.jpg\" alt=\"Secure Shell (SSH)\" class=\"wp-image-4105\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c5c1d8dd3fb342ab89fed0f34a3183d0.jpg 1408w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c5c1d8dd3fb342ab89fed0f34a3183d0-300x164.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c5c1d8dd3fb342ab89fed0f34a3183d0-1024x559.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c5c1d8dd3fb342ab89fed0f34a3183d0-768x419.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c5c1d8dd3fb342ab89fed0f34a3183d0-18x10.jpg 18w\" sizes=\"(max-width: 1408px) 100vw, 1408px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi k\u1ef9 thu\u1eadt s\u1ed1 li\u00ean k\u1ebft ng\u00e0y nay, kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng t\u1eeb xa kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ti\u1ec7n \u00edch\u2014m\u00e0 c\u00f2n l\u00e0 m\u1ed9t y\u00eau c\u1ea7u thi\u1ebft y\u1ebfu. Tuy nhi\u00ean, quy\u1ec1n l\u1ef1c l\u1edbn \u0111i k\u00e8m v\u1edbi tr\u00e1ch nhi\u1ec7m l\u1edbn, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac <strong>SSH<\/strong> <strong>giao th\u1ee9c Secure Shell (SSH)<\/strong> xu\u1ea5t hi\u1ec7n. N\u00f3 l\u00e0 ng\u01b0\u1eddi canh g\u00e1c th\u1ea7m l\u1eb7ng, v\u1ecb anh h\u00f9ng ch\u01b0a \u0111\u01b0\u1ee3c ca ng\u1ee3i c\u1ee7a vi\u1ec7c qu\u1ea3n tr\u1ecb t\u1eeb xa m\u1ed9t c\u00e1ch an to\u00e0n, t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng ni\u1ec1m tin cho c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng, nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 k\u1ef9 s\u01b0 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang ta s\u1ebd l\u00e0m r\u00f5 giao th\u1ee9c SSH, kh\u00e1m ph\u00e1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng b\u00ean trong c\u1ee7a n\u00f3 v\u00e0 nh\u1ea5n m\u1ea1nh vai tr\u00f2 then ch\u1ed1t c\u1ee7a n\u00f3 trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng CNTT hi\u1ec7n \u0111\u1ea1i. Ch\u00fang ta c\u0169ng s\u1ebd k\u1ebft n\u1ed1i c\u00e1c \u0111i\u1ec3m \u0111\u1ebfn ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd l\u00e0m n\u1ec1n t\u1ea3ng cho m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao c\u1ee7a ch\u00fang ta, bao g\u1ed3m c\u1ea3 vi\u1ec7c xem x\u00e9t c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e1ng tin c\u1eady t\u1eeb nh\u1eefng nh\u00e0 l\u00e3nh \u0111\u1ea1o ng\u00e0nh nh\u01b0 <strong>FS.com<\/strong>. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd Nh\u1eefng \u0111i\u1ec3m c\u1ea7n ghi nh\u1edb ch\u00ednh<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SSH<\/strong> <strong>SSH<\/strong> cho ph\u00e9p b\u1ea1n k\u1ebft n\u1ed1i an to\u00e0n t\u1edbi c\u00e1c m\u00e1y t\u00ednh kh\u00e1c. N\u00f3 gi\u1eef d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n an to\u00e0n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e3 h\u00f3a m\u1ea1nh.<\/p><\/li><li><p>S\u1eed d\u1ee5ng kh\u00f3a SSH \u0111\u1ec3 \u0111\u0103ng nh\u1eadp thay v\u00ec m\u1eadt kh\u1ea9u. C\u00e1ch n\u00e0y an to\u00e0n h\u01a1n v\u00e0 gi\u00fap b\u1ea3o v\u1ec7 k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n.<\/p><\/li><li><p>Lu\u00f4n \u00e1p d\u1ee5ng c\u00e1c th\u00f3i quen t\u1ed1t, v\u00ed d\u1ee5 nh\u01b0 ch\u1ecdn kh\u00f3a m\u1ea1nh v\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m SSH c\u1ee7a b\u1ea1n. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1eef cho SSH c\u1ee7a b\u1ea1n lu\u00f4n an to\u00e0n.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd Ch\u00ednh x\u00e1c th\u00ec Giao th\u1ee9c Secure Shell (SSH) l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, <strong>Giao th\u1ee9c Shell B\u1ea3o m\u1eadt (SSH)<\/strong> l\u00e0 m\u1ed9t giao th\u1ee9c m\u1ea1ng m\u1eadt m\u00e3 nh\u1eb1m v\u1eadn h\u00e0nh c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng m\u1ed9t c\u00e1ch an to\u00e0n tr\u00ean m\u1ed9t m\u1ea1ng kh\u00f4ng an to\u00e0n. \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a n\u00f3 l\u00e0 \u0111\u0103ng nh\u1eadp v\u00e0o m\u1ed9t m\u00e1y ch\u1ee7 t\u1eeb xa, th\u1ef1c thi l\u1ec7nh v\u00e0 chuy\u1ec3n t\u1ec7p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ra \u0111\u1eddi n\u0103m 1995 nh\u1eb1m thay th\u1ebf c\u00e1c giao th\u1ee9c l\u1ed7i th\u1eddi kh\u00f4ng an to\u00e0n nh\u01b0 Telnet v\u00e0 rsh, SSH \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n m\u1eb7c \u0111\u1ecbnh cho truy c\u1eadp t\u1eeb xa an to\u00e0n. Giao th\u1ee9c n\u00e0y, hi\u1ec7n \u1edf phi\u00ean b\u1ea3n th\u1ee9 hai <strong>(SSH-2)<\/strong>, cung c\u1ea5p m\u1ed9t k\u00eanh an to\u00e0n tr\u00ean m\u1ed9t m\u1ea1ng kh\u00f4ng an to\u00e0n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh kh\u00e1ch-ch\u1ee7, x\u00e1c th\u1ef1c c\u1ea3 hai \u0111\u1ea7u v\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd SSH ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? B\u00ed m\u1eadt \u0111\u1eb1ng sau h\u1eadu tr\u01b0\u1eddng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 quy tr\u00ecnh b\u1eaft tay (handshake) SSH l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 cao t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a n\u00f3. \u0110\u00e2y l\u00e0 m\u1ed9t quy tr\u00ecnh tinh t\u1ebf k\u1ebft h\u1ee3p gi\u1eefa m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c, di\u1ec5n ra qua m\u1ed9t v\u00e0i giai \u0111o\u1ea1n then ch\u1ed1t.<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>B\u1eaft tay TCP:<\/strong> M\u00e1y kh\u00e1ch kh\u1edfi t\u1ea1o k\u1ebft n\u1ed1i t\u1edbi m\u00e1y ch\u1ee7 SSH tr\u00ean c\u1ed5ng chu\u1ea9n 22.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Trao \u0111\u1ed5i phi\u00ean b\u1ea3n:<\/strong> M\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 th\u1ed1ng nh\u1ea5t v\u1ec1 phi\u00ean b\u1ea3n giao th\u1ee9c SSH s\u1ebd s\u1eed d\u1ee5ng (SSH-2 l\u00e0 ti\u00eau chu\u1ea9n hi\u1ec7n \u0111\u1ea1i).<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Trao \u0111\u1ed5i kh\u00f3a (th\u01b0\u01a1ng l\u01b0\u1ee3ng thu\u1eadt to\u00e1n):<br><\/strong> B\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nh\u01b0 Diffie-Hellman, hai b\u00ean t\u1ea1o an to\u00e0n m\u1ed9t kh\u00f3a b\u00ed m\u1eadt chung. Kh\u00f3a phi\u00ean n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 m\u00e3 h\u00f3a to\u00e0n b\u1ed9 giao ti\u1ebfp, d\u00f9 ch\u00fang ch\u01b0a t\u1eebng g\u1eb7p nhau tr\u01b0\u1edbc \u0111\u00f3.<br>.<\/p><\/li><li><p style=\"margin: 0px 0px 8px;\"><strong>X\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng:<br><\/strong> M\u00e1y ch\u1ee7 x\u00e1c minh danh t\u00ednh c\u1ee7a m\u00e1y kh\u00e1ch. Vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n qua:<br><\/p><ul><li><p style=\"margin: 0px;\"><strong>M\u1eadt kh\u1ea9u:<br><\/strong> \u0110\u01a1n gi\u1ea3n nh\u01b0ng k\u00e9m an to\u00e0n h\u01a1n.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u1eb7p kh\u00f3a SSH (x\u00e1c th\u1ef1c kh\u00f3a c\u00f4ng khai):<br><\/strong> Ti\u00eau chu\u1ea9n v\u00e0ng. M\u00e1y kh\u00e1ch s\u1edf h\u1eefu kh\u00f3a ri\u00eang, c\u00f2n m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef kh\u00f3a c\u00f4ng khai t\u01b0\u01a1ng \u1ee9ng.<br>.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px;\"><strong>K\u00eanh b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp:<br><\/strong> Sau khi x\u00e1c th\u1ef1c th\u00e0nh c\u00f4ng, m\u1ed9t \u0111\u01b0\u1eddng h\u1ea7m \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra. To\u00e0n b\u1ed9 d\u1eef li\u1ec7u \u2014 bao g\u1ed3m c\u00e1c ph\u00edm nh\u1ea5n, l\u1ec7nh v\u00e0 \u0111\u1ea7u ra \u2014 \u0111\u1ec1u \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi vi\u1ec7c nghe l\u00e9n v\u00e0 s\u1eeda \u0111\u1ed5i.<br>.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh m\u1ea1nh m\u1ebd n\u00e0y \u0111\u1ea3m b\u1ea3o<br> <strong>t\u00ednh b\u1ea3o m\u1eadt, to\u00e0n v\u1eb9n v\u00e0 x\u00e1c th\u1ef1c<br><\/strong> cho m\u1ecdi phi\u00ean l\u00e0m vi\u1ec7c.<br>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"542\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ba631b92dfe451389ee4f12ca5be758.webp\" alt=\"Secure Shell (SSH) Protocol\" class=\"wp-image-4106\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ba631b92dfe451389ee4f12ca5be758.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ba631b92dfe451389ee4f12ca5be758-300x136.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ba631b92dfe451389ee4f12ca5be758-1024x463.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ba631b92dfe451389ee4f12ca5be758-768x347.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ba631b92dfe451389ee4f12ca5be758-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd C\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u00e1c th\u1ef1c SSH: M\u1eadt kh\u1ea9u so v\u1edbi Kh\u00f3a<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 m\u1eadt kh\u1ea9u ph\u1ed5 bi\u1ebfn,<br>, <strong>x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean kh\u00f3a SSH<br><\/strong> v\u01b0\u1ee3t tr\u1ed9i r\u00f5 r\u1ec7t v\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n r\u1ee7i ro t\u1ea5n c\u00f4ng d\u00f2 m\u1eadt kh\u1ea9u b\u1eb1ng c\u00e1ch th\u1eed nhi\u1ec1u l\u1ea7n v\u00e0 l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu cho vi\u1ec7c vi\u1ebft k\u1ecbch b\u1ea3n (scripting) c\u0169ng nh\u01b0 c\u00e1c quy tr\u00ecnh CI\/CD.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng sau so s\u00e1nh hai ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh:<br><\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>X\u00e1c th\u1ef1c b\u1eb1ng m\u1eadt kh\u1ea9u<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>X\u00e1c th\u1ef1c d\u1ef1a tr\u00ean kh\u00f3a SSH<br><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>M\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Cao<br><\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>M\u1ee9c \u0111\u1ed9 d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng d\u00f2 m\u1eadt kh\u1ea9u v\u00e0 l\u1eeba \u0111\u1ea3o (phishing)<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Mi\u1ec5n nhi\u1ec5m v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean m\u1eadt kh\u1ea9u<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ef1 \u0111\u1ed9ng h\u00f3a<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f3 kh\u0103n, \u0111\u00f2i h\u1ecfi l\u01b0u tr\u1eef m\u1eadt kh\u1ea9u<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ec5<\/strong>, l\u00fd t\u01b0\u1edfng cho c\u00e1c k\u1ecbch b\u1ea3n v\u00e0 quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>S\u1ef1 ti\u1ec7n l\u1ee3i<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u nh\u1eadp th\u1ee7 c\u00f4ng m\u1ed7i l\u1ea7n<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng agent SSH \u0111\u1ec3 truy c\u1eadp li\u1ec1n m\u1ea1ch<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u0103ng nh\u1eadp t\u01b0\u01a1ng t\u00e1c \u00edt th\u01b0\u1eddng xuy\u00ean<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng, nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng<br><\/strong><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi nh\u1eefng ai mu\u1ed1n \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1ec1<br> <strong>qu\u1ea3n l\u00fd b\u1ea3o m\u1eadt SSH<br><\/strong>, vi\u1ec7c chuy\u1ec3n sang x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean kh\u00f3a l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean b\u1eaft bu\u1ed9c.<br>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn: H\u01a1n c\u1ea3 \u0111\u0103ng nh\u1eadp t\u1eeb xa<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SSH<\/strong>\u2018T\u00ednh linh ho\u1ea1t c\u1ee7a <br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>\u0110\u0103ng nh\u1eadp d\u00f2ng l\u1ec7nh t\u1eeb xa an to\u00e0n:<br><\/strong> Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Chuy\u1ec3n t\u1ec7p an to\u00e0n:<br><\/strong> S\u1eed d\u1ee5ng c\u00e1c giao th\u1ee9c li\u00ean quan nh\u01b0<br> <strong>SCP (Sao ch\u00e9p an to\u00e0n)<\/strong> and <strong>SFTP (Giao th\u1ee9c truy\u1ec1n t\u1ec7p qua SSH)<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Chuy\u1ec3n ti\u1ebfp c\u1ed5ng (tunneling):<\/strong> T\u00ednh n\u0103ng m\u1ea1nh m\u1ebd n\u00e0y cho ph\u00e9p b\u1ea1n truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch an to\u00e0n cho c\u00e1c giao th\u1ee9c kh\u00f4ng ph\u1ea3i SSH (v\u00ed d\u1ee5: l\u01b0u l\u01b0\u1ee3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u, VNC) th\u00f4ng qua m\u1ed9t \u0111\u01b0\u1eddng h\u1ea7m SSH \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u00e1c thao t\u00e1c Git:<\/strong> C\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 GitHub v\u00e0 GitLab s\u1eed d\u1ee5ng kh\u00f3a SSH \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ng\u01b0\u1eddi d\u00f9ng m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 \u0111\u1ea9y m\u00e3.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00e0nh th\u1ea1o nh\u1eefng <strong>k\u1ef9 thu\u1eadt n\u00e2ng cao c\u1ee7a giao th\u1ee9c SSH<\/strong> c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 quy tr\u00ecnh l\u00e0m vi\u1ec7c v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd Ng\u01b0\u1eddi h\u00f9ng th\u1ea7m l\u1eb7ng: C\u00e1c m\u00f4-\u0111un quang trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e2y gi\u1edd, h\u00e3y chuy\u1ec3n tr\u1ecdng t\u00e2m t\u1eeb m\u1eb7t logic sang m\u1eb7t v\u1eadt l\u00fd. D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1edfi <strong>SSH<\/strong> th\u1ef1c t\u1ebf di chuy\u1ec3n qua kho\u1ea3ng c\u00e1ch l\u1edbn v\u1edbi t\u1ed1c \u0111\u1ed9 ch\u1edbp nho\u00e1ng nh\u01b0 th\u1ebf n\u00e0o? \u0110\u00e2y l\u00e0 l\u00fac <strong>module quang<br><\/strong> ph\u00e1t huy vai tr\u00f2.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u00f4-\u0111un quang LINK-PP: L\u00e0m n\u1ec1n t\u1ea3ng cho c\u00e1c k\u1ebft n\u1ed1i b\u1ea3o m\u1eadt c\u1ee7a b\u1ea1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u1ea1ng c\u1ee7a b\u1ea1n l\u00e0 \u0111i\u1ec1u b\u1ea5t kh\u1ea3 th\u01b0\u01a1ng l\u01b0\u1ee3ng, b\u1ea1n c\u1ea7n c\u00e1c m\u00f4-\u0111un quang m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 tin c\u1eady. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh v\u1ecb th\u1ebf l\u00e0 nh\u00e0 cung c\u1ea5p h\u00e0ng \u0111\u1ea7u c\u00e1c th\u00e0nh ph\u1ea7n m\u1ea1ng hi\u1ec7u su\u1ea5t cao, \u0111\u00e1ng tin c\u1eady, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eaft khe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LINK-PP<\/strong> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea1t m\u1ee9c t\u01b0\u01a1ng th\u00edch t\u1ed1i \u0111a, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p v\u00e0 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u xu\u1ea5t s\u1eafc. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u1ec1n t\u1ea3ng v\u1eadt l\u00fd c\u1ee7a m\u1ea1ng b\u1ea1n an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady nh\u01b0 ch\u00ednh giao th\u1ee9c <strong>SSH<\/strong> ch\u1ea1y tr\u00ean n\u00f3. D\u00f9 b\u1ea1n \u0111ang qu\u1ea3n l\u00fd c\u1ee5m \u0111\u00e1m m\u00e2y hay h\u1ec7 th\u1ed1ng m\u1ea1ng doanh nghi\u1ec7p, m\u1ed9t k\u1ebft n\u1ed1i v\u1eadt l\u00fd \u1ed5n \u0111\u1ecbnh l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 c\u00f3 m\u1ed9t phi\u00ean truy c\u1eadp t\u1eeb xa ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi nhu c\u1ea7u m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao c\u1ee7a b\u1ea1n, h\u00e3y c\u00e2n nh\u1eafc <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\"><strong>SFP-10G-LR<\/strong><\/a> m\u00f4-\u0111un n\u00e0y. B\u1ed9 thu ph\u00e1t SFP+ 10 Gigabit ch\u1ea5t l\u01b0\u1ee3ng cao n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c k\u1ebft n\u1ed1i t\u1ea7m xa (l\u00ean \u0111\u1ebfn 10 km) qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-single-mode-fiber-and-how-does-it-work\/\"><strong>s\u1ee3i quang \u0111\u01a1n mode<\/strong><\/a>, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c m\u00e1y ch\u1ee7 \u1edf c\u00e1ch xa nhau v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd m\u00e0 b\u1ea1n c\u1ea7n qu\u1ea3n l\u00fd m\u1ed9t c\u00e1ch an to\u00e0n th\u00f4ng qua <strong>SSH<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c t\u00edch h\u1ee3p ph\u1ea7n c\u1ee9ng \u0111\u00e1ng tin c\u1eady nh\u01b0 <strong>LINK-PP SFP-10G-LR<\/strong> l\u00e0 m\u1ed9t th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho b\u1ea5t k\u1ef3 ai nghi\u00eam t\u00fac trong vi\u1ec7c <strong>t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t m\u1ea1ng cho vi\u1ec7c qu\u1ea3n tr\u1ecb h\u1ec7 th\u1ed1ng t\u1eeb xa<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd C\u00e1c th\u1ef1c h\u00e0nh b\u1ea3o m\u1eadt SSH t\u1ed1t nh\u1ea5t: Danh s\u00e1ch ki\u1ec3m tra nhanh<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 gi\u1eef c\u00e1c phi\u00ean SSH c\u1ee7a b\u1ea1n lu\u00f4n an to\u00e0n, h\u00e3y tu\u00e2n theo nh\u1eefng m\u1eb9o thi\u1ebft y\u1ebfu sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>V\u00f4 hi\u1ec7u h\u00f3a \u0111\u0103ng nh\u1eadp Root:<\/strong> Ng\u0103n truy c\u1eadp root tr\u1ef1c ti\u1ebfp qua SSH.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>S\u1eed d\u1ee5ng c\u1ee5m m\u1eadt kh\u1ea9u kh\u00f3a m\u1ea1nh:<\/strong> B\u1ea3o v\u1ec7 kh\u00f3a ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n b\u1eb1ng m\u1ed9t c\u1ee5m m\u1eadt kh\u1ea9u v\u1eefng ch\u1eafc.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Thay \u0111\u1ed5i c\u1ed5ng m\u1eb7c \u0111\u1ecbnh:<\/strong> Chuy\u1ec3n kh\u1ecfi c\u1ed5ng 22 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m s\u1ed1 l\u1ea7n qu\u00e9t t\u1ef1 \u0111\u1ed9ng b\u1edfi bot.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>S\u1eed d\u1ee5ng Fail2ban:<\/strong> C\u00f4ng c\u1ee5 n\u00e0y c\u00f3 th\u1ec3 ch\u1eb7n c\u00e1c \u0111\u1ecba ch\u1ec9 IP th\u1ec3 hi\u1ec7n d\u1ea5u hi\u1ec7u \u0111\u1ed9c h\u1ea1i, v\u00ed d\u1ee5 nh\u01b0 qu\u00e1 nhi\u1ec1u l\u1ea7n nh\u1eadp sai m\u1eadt kh\u1ea9u.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean:<\/strong> Th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m client v\u00e0 server SSH \u0111\u1ec3 v\u00e1 c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd K\u1ebft lu\u1eadn: B\u1ea3o m\u1eadt n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea1n \u2014 t\u1eeb giao th\u1ee9c \u0111\u1ebfn ph\u1ea7n c\u1ee9ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>giao th\u1ee9c Secure Shell (SSH)<\/strong> l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu trong b\u1ed9 c\u00f4ng c\u1ee5 c\u1ee7a m\u1ecdi chuy\u00ean gia CNTT. N\u00f3 cung c\u1ea5p t\u00ednh b\u1ea3o m\u1eadt m\u00e3 h\u00f3a c\u1ea7n thi\u1ebft \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c h\u1ec7 th\u1ed1ng trong m\u1ed9t th\u1ebf gi\u1edbi kh\u00f4ng an to\u00e0n. Tuy nhi\u00ean, \u0111\u1ed9 tin c\u1eady th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t chu\u1ed7i li\u00ean k\u1ebft k\u00e9o d\u00e0i t\u1eeb giao th\u1ee9c logic cho \u0111\u1ebfn c\u00e1c th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd trong m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c th\u1ef1c h\u00e0nh c\u1ea5u h\u00ecnh <strong>SSH v\u1eefng ch\u1eafc<\/strong> c\u00f9ng ph\u1ea7n c\u1ee9ng ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e1ng tin c\u1eady t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p uy t\u00edn nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a>, b\u1ea1n s\u1ebd x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c m\u1ed9t c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng th\u1ef1c s\u1ef1 b\u1ec1n b\u1ec9 v\u00e0 hi\u1ec7u n\u0103ng cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd FAQ<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n c\u00f3 th\u1ec3 l\u00e0m g\u00ec v\u1edbi SSH?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o c\u00e1c m\u00e1y t\u00ednh \u1edf xa.<\/p><\/li><li><p>B\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n t\u1ec7p m\u1ed9t c\u00e1ch an to\u00e0n gi\u1eefa hai m\u00e1y t\u00ednh.<\/p><\/li><li><p>B\u1ea1n c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n m\u00e1y ch\u1ee7 ngay c\u1ea3 khi b\u1ea1n kh\u00f4ng \u1edf g\u1ea7n ch\u00fang.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec khi\u1ebfn SSH an to\u00e0n?<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>SSH gi\u1eef d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n an to\u00e0n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e3 h\u00f3a. Ch\u1ec9 b\u1ea1n v\u00e0 m\u00e1y ch\u1ee7 m\u1edbi c\u00f3 th\u1ec3 xem c\u00e1c tin nh\u1eafn c\u1ee7a b\u1ea1n. C\u01a1 ch\u1ebf x\u00e1c th\u1ef1c m\u1ea1nh ng\u0103n ch\u1eb7n nh\u1eefng ng\u01b0\u1eddi kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p truy c\u1eadp.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa SSH v\u00e0 Telnet l\u00e0 g\u00ec?<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SSH<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Telnet<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>M\u00e3 h\u00f3a<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>No<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>B\u1ea3o m\u1eadt<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ea1nh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u1ebfu<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>","protected":false},"excerpt":{"rendered":"<p>Shell An To\u00e0n (SSH) cho ph\u00e9p truy c\u1eadp t\u1eeb xa \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 chuy\u1ec3n t\u1ec7p an to\u00e0n, b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p x\u00e1c th\u1ef1c m\u1ea1nh v\u00e0 m\u00e3 h\u00f3a v\u1eefng ch\u1eafc.<\/p>","protected":false},"author":1,"featured_media":4105,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[24,26],"class_list":["post-4107","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=4107"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4107\/revisions"}],"predecessor-version":[{"id":10991,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4107\/revisions\/10991"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4105"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}