{"id":478876,"date":"2023-08-09T09:39:28","date_gmt":"2023-08-09T09:39:28","guid":{"rendered":""},"modified":"2023-09-05T11:17:45","modified_gmt":"2023-09-05T11:17:45","slug":"secure-shell","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/secure-shell\/","title":{"rendered":"V\u1ecf an to\u00e0n"},"content":{"rendered":"<p>Secure Shell, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 SSH, l\u00e0 m\u1ed9t giao th\u1ee9c m\u1ea1ng m\u1eadt m\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n li\u00ean l\u1ea1c an to\u00e0n gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng tr\u00ean m\u1ea1ng kh\u00f4ng b\u1ea3o m\u1eadt. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng m\u1ed9t c\u00e1ch an to\u00e0n, cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 th\u1ef1c thi c\u00e1c l\u1ec7nh tr\u00ean m\u00e1y ch\u1ee7 t\u1eeb xa, truy\u1ec1n t\u1ec7p, v.v., t\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a Secure Shell v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean nh\u1eafc \u0111\u1ebfn n\u00f3<\/h2>\n<p>L\u1ecbch s\u1eed c\u1ee7a SSH b\u1eaft \u0111\u1ea7u t\u1eeb n\u0103m 1995 khi nh\u00e0 nghi\u00ean c\u1ee9u Ph\u1ea7n Lan Tatu Yl\u00f6nen quan s\u00e1t th\u1ea5y nh\u1eefng l\u1ed7i b\u1ea3o m\u1eadt nghi\u00eam tr\u1ecdng trong giao th\u1ee9c Telnet. Anh \u1ea5y \u0111\u00e3 c\u1ea3nh gi\u00e1c tr\u01b0\u1edbc m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u00e1nh c\u1eafp m\u1eadt kh\u1ea9u v\u00e0o m\u1ea1ng tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc c\u1ee7a m\u00ecnh v\u00e0 quy\u1ebft \u0111\u1ecbnh t\u1ea1o ra m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p an to\u00e0n h\u01a1n \u0111\u1ec3 thay th\u1ebf Telnet. SSH \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p th\u00f4ng tin \u0111\u0103ng nh\u1eadp t\u1eeb xa an to\u00e0n v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng an to\u00e0n kh\u00e1c qua m\u1ea1ng kh\u00f4ng an to\u00e0n. Phi\u00ean b\u1ea3n \u0111\u1ea7u ti\u00ean, SSH-1, nhanh ch\u00f3ng tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn, d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n h\u01a1n n\u1eefa c\u1ee7a SSH-2, m\u1ed9t phi\u00ean b\u1ea3n n\u00e2ng cao v\u00e0 an to\u00e0n h\u01a1n c\u1ee7a giao th\u1ee9c.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Secure Shell. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 Secure Shell<\/h2>\n<p>SSH kh\u00f4ng ch\u1ec9 l\u00e0 s\u1ef1 thay th\u1ebf cho Telnet; \u0111\u00f3 l\u00e0 m\u1ed9t b\u1ed9 ti\u1ec7n \u00edch cung c\u1ea5p c\u00e1ch truy\u1ec1n th\u00f4ng tin an to\u00e0n v\u00e0 \u0111i\u1ec1u khi\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng t\u1eeb xa. N\u00f3 d\u1ef1a v\u00e0o c\u00e1c k\u1ef9 thu\u1eadt m\u00e3 h\u00f3a kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u. C\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>X\u00e1c th\u1ef1c<\/strong>: SSH s\u1eed d\u1ee5ng m\u1eadt m\u00e3 kh\u00f3a c\u00f4ng khai \u0111\u1ec3 x\u00e1c minh danh t\u00ednh c\u1ee7a m\u00e1y kh\u00e1ch ho\u1eb7c m\u00e1y ch\u1ee7, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea3 hai b\u00ean \u0111\u1ec1u h\u1ee3p ph\u00e1p.<\/li>\n<li><strong>M\u00e3 h\u00f3a<\/strong>: D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, khi\u1ebfn nh\u1eefng k\u1ebb nghe tr\u1ed9m kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c.<\/li>\n<li><strong>Ch\u00ednh tr\u1ef1c<\/strong>: SSH \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c h\u00e0m b\u0103m m\u1eadt m\u00e3.<\/li>\n<\/ul>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a Secure Shell. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Secure Shell<\/h2>\n<p>SSH ho\u1ea1t \u0111\u1ed9ng theo ki\u1ebfn tr\u00fac client-server v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ba giai \u0111o\u1ea1n ch\u00ednh:<\/p>\n<ol>\n<li><strong>Thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i<\/strong>: M\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00e0m ph\u00e1n c\u00e1c ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a, trao \u0111\u1ed5i kh\u00f3a v\u00e0 x\u00e1c th\u1ef1c l\u1eabn nhau.<\/li>\n<li><strong>Truy\u1ec1n d\u1eef li\u1ec7u<\/strong>: C\u00e1c k\u00eanh b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u, \u00e1p d\u1ee5ng m\u00e3 h\u00f3a, n\u00e9n v\u00e0 x\u00e1c minh t\u00ednh to\u00e0n v\u1eb9n cho t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n.<\/li>\n<li><strong>Ch\u1ea5m d\u1ee9t k\u1ebft n\u1ed1i<\/strong>: K\u1ebft n\u1ed1i b\u1ecb \u0111\u00f3ng v\u00e0 c\u00e1c kh\u00f3a phi\u00ean b\u1ecb lo\u1ea1i b\u1ecf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c phi\u00ean trong t\u01b0\u01a1ng lai s\u1ebd b\u1eaft \u0111\u1ea7u m\u1edbi.<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Secure Shell<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a SSH bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>M\u00e3 h\u00f3a m\u1ea1nh m\u1ebd<\/strong>: SSH s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a m\u1ea1nh nh\u01b0 AES, 3DES v\u00e0 Blowfish.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 \u0111a n\u1ec1n t\u1ea3ng<\/strong>: M\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 SSH c\u00f3 s\u1eb5n cho nhi\u1ec1u h\u1ec7 \u0111i\u1ec1u h\u00e0nh kh\u00e1c nhau, bao g\u1ed3m Linux, Windows, macOS v\u00e0 UNIX.<\/li>\n<li><strong>X\u00e1c th\u1ef1c linh ho\u1ea1t<\/strong>: H\u1ed7 tr\u1ee3 m\u1eadt kh\u1ea9u, kh\u00f3a chung ho\u1eb7c x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean ch\u1ee9ng ch\u1ec9.<\/li>\n<li><strong>C\u1ed5ng chuy\u1ec3n ti\u1ebfp<\/strong>: Cho ph\u00e9p t\u1ea1o \u0111\u01b0\u1eddng h\u1ea7m an to\u00e0n cho c\u00e1c k\u1ebft n\u1ed1i TCP t\u00f9y \u00fd.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i v\u1ecf b\u1ea3o m\u1eadt<\/h2>\n<p>C\u00f3 hai phi\u00ean b\u1ea3n ch\u00ednh c\u1ee7a SSH:<\/p>\n<table>\n<thead>\n<tr>\n<th>Phi\u00ean b\u1ea3n<\/th>\n<th>\u0110\u1eb7c tr\u01b0ng<\/th>\n<th>B\u1ea3o v\u1ec7<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SSH-1<\/td>\n<td>Phi\u00ean b\u1ea3n g\u1ed1c, k\u00e9m an to\u00e0n h\u01a1n<\/td>\n<td>Kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng n\u1eefa<\/td>\n<\/tr>\n<tr>\n<td>SSH-2<\/td>\n<td>T\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt, nhi\u1ec1u t\u00ednh n\u0103ng h\u01a1n<\/td>\n<td>Khuy\u1ebfn kh\u00edch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng Secure Shell, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n<p>SSH \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho:<\/p>\n<ul>\n<li>Qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng t\u1eeb xa<\/li>\n<li>Truy\u1ec1n t\u1eadp tin an to\u00e0n<\/li>\n<li>\u0110\u01b0\u1eddng h\u1ea7m an to\u00e0n c\u1ee7a \u1ee9ng d\u1ee5ng<\/li>\n<\/ul>\n<p>C\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p th\u01b0\u1eddng g\u1eb7p bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Truy c\u1eadp tr\u00e1i ph\u00e9p<\/strong>: Gi\u1ea3m thi\u1ec3u b\u1eb1ng c\u00e1ch qu\u1ea3n l\u00fd kh\u00f3a th\u00edch h\u1ee3p, x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 v\u00e0 gi\u00e1m s\u00e1t.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng trung gian<\/strong>: Gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch x\u00e1c minh c\u1ea9n th\u1eadn c\u00e1c kh\u00f3a m\u00e1y ch\u1ee7.<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 nh\u1eefng so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng<\/th>\n<th>SSH<\/th>\n<th>Telnet<\/th>\n<th>\u0111\u0103ng nh\u1eadp<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u00e3 h\u00f3a<\/td>\n<td>\u0110\u00fang<\/td>\n<td>KH\u00d4NG<\/td>\n<td>KH\u00d4NG<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c th\u1ef1c<\/td>\n<td>Nhi\u1ec1u<\/td>\n<td>M\u1eadt kh\u1ea9u<\/td>\n<td>M\u1eadt kh\u1ea9u<\/td>\n<\/tr>\n<tr>\n<td>N\u1ec1n t\u1ea3ng<\/td>\n<td>\u0111a<\/td>\n<td>\u0111a<\/td>\n<td>UNIX<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn Secure Shell<\/h2>\n<p>SSH s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd h\u01a1n, hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u00e0 c\u00e1c t\u00ednh n\u0103ng m\u1edbi. C\u00e1c thu\u1eadt to\u00e1n kh\u00e1ng l\u01b0\u1ee3ng t\u1eed \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u \u0111\u1ec3 chu\u1ea9n b\u1ecb cho nh\u1eefng th\u00e1ch th\u1ee9c trong t\u01b0\u01a1ng lai v\u1ec1 m\u1eadt m\u00e3.<\/p>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi Secure Shell<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi SSH \u0111\u1ec3 th\u00eam m\u1ed9t l\u1edbp \u1ea9n danh v\u00e0 b\u1ea3o m\u1eadt b\u1ed5 sung. SSH c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn c\u00e1c k\u1ebft n\u1ed1i c\u1ee7a n\u00f3 th\u00f4ng qua c\u00e1c m\u00e1y ch\u1ee7 proxy, t\u1eeb \u0111\u00f3 che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 t\u1ea1o th\u00eam r\u00e0o c\u1ea3n cho nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng ti\u1ec1m n\u0103ng.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.openssh.com\/\" target=\"_new\" rel=\"noopener nofollow\">D\u1ef1 \u00e1n OpenSSH<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc4251\" target=\"_new\" rel=\"noopener nofollow\">RFC 4251 \u2013 Ki\u1ebfn tr\u00fac giao th\u1ee9c Secure Shell (SSH)<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/\" target=\"_new\" rel=\"noopener\">OneProxy \u2013 T\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt c\u1ee7a b\u1ea1n v\u1edbi m\u00e1y ch\u1ee7 proxy<\/a><\/li>\n<\/ul>","protected":false},"featured_media":478877,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478876","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Secure Shell (SSH)<\/mark>","faq_items":[{"question":"What is Secure Shell (SSH)?","answer":"<p>Secure Shell, or SSH, is a cryptographic network protocol used to provide secure communication between systems over an unsecured network. It offers encrypted channels for remote login, file transfers, and more.<\/p>"},{"question":"What is the history of SSH?","answer":"<p>SSH was created in 1995 by Finnish researcher Tatu Yl\u00f6nen as a response to security flaws in the Telnet protocol. It started with version SSH-1 and later evolved to the more secure SSH-2.<\/p>"},{"question":"How does Secure Shell work?","answer":"<p>SSH operates in three main stages: Connection Establishment, where the client and server negotiate encryption methods and authenticate; Data Transfer, where data is encrypted and transferred securely; and Connection Termination, where the connection is closed, and session keys are discarded.<\/p>"},{"question":"What are the key features of SSH?","answer":"<p>The key features include robust encryption, multi-platform support, flexible authentication methods, and the ability to forward ports for secure tunneling of TCP connections.<\/p>"},{"question":"What types of Secure Shell exist?","answer":"<p>There are two main versions of SSH: SSH-1, the original and now deprecated version, and SSH-2, which offers enhanced security and features.<\/p>"},{"question":"What are common ways to use SSH, and what problems might be encountered?","answer":"<p>SSH is commonly used for remote system management, secure file transfer, and secure tunneling of applications. Problems can include unauthorized access and man-in-the-middle attacks, which can be mitigated with proper security measures.<\/p>"},{"question":"How does SSH compare to similar terms like Telnet and Rlogin?","answer":"<p>SSH offers encryption and multiple authentication methods, unlike Telnet and Rlogin, which are less secure. While Telnet and Rlogin are multi-platform and UNIX-specific, respectively, SSH is available on multiple platforms.<\/p>"},{"question":"What are the future perspectives related to SSH?","answer":"<p>The future of SSH includes further security enhancements, improved efficiency, new features, and the development of quantum-resistant algorithms to face future cryptographic challenges.<\/p>"},{"question":"How can proxy servers like OneProxy be associated with SSH?","answer":"<p>Proxy servers such as those provided by OneProxy can be integrated with SSH to add an extra layer of anonymity and security. SSH can route its connections through proxy servers, concealing the client's IP address and adding additional security.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478876","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478876\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/478877"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=478876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}