{"id":10946,"date":"2024-07-10T18:14:09","date_gmt":"2024-07-10T11:14:09","guid":{"rendered":"https:\/\/blog.tinohost.com\/?p=9360"},"modified":"2024-07-10T15:14:19","modified_gmt":"2024-07-10T08:14:19","slug":"ssh-key-la-gi","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/ssh-key-la-gi\/","title":{"rendered":"SSH Key l\u00e0 g\u00ec? C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SSH Key"},"content":{"rendered":"\n<p><strong>B\u1ea3o m\u1eadt l\u00fac n\u00e0o c\u0169ng l\u00e0 v\u1ea5n \u0111\u1ec1 n\u00f3ng b\u1ecfng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong th\u1eddi k\u1ef3 c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n nh\u01b0 hi\u1ec7n nay, khi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng d\u1ea7n tr\u1edf n\u00ean \u0111a d\u1ea1ng v\u00e0 kh\u00f3 ki\u1ec3m so\u00e1t h\u01a1n. \u0110\u1ec3 d\u1eef li\u1ec7u lu\u00f4n \u0111\u01b0\u1ee3c an to\u00e0n, nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt m\u00e1y ch\u1ee7 b\u1eb1ng SSH Key. SSH Key l\u00e0 g\u00ec? B\u1ea1n h\u00e3y \u0111\u1ecdc b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 t\u00ecm hi\u1ec3u nh\u00e9.<\/strong><\/p>\n\n\n\n<h2 id=\"SSH_Key_l\u00e0_g\u00ec?\"><strong>SSH Key l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n<h3 id=\"\u0110\u1ecbnh_ngh\u0129a_SSH_Key\"><strong>\u0110\u1ecbnh ngh\u0129a SSH Key<\/strong><\/h3>\n\n\n\n<p>SSH Key l\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c \u0111\u0103ng nh\u1eadp v\u1edbi m\u00e1y ch\u1ee7 th\u00f4ng qua truy c\u1eadp <a class=\"rank-math-link\" href=\"https:\/\/tino.vn\/blog\/ssh-tren-share-cloud-hosting-su-dung-terminal\/\">SSH<\/a> b\u1eb1ng vi\u1ec7c \u0111\u1ed1i chi\u1ebfu gi\u1eefa m\u1ed9t c\u1eb7p keys, bao g\u1ed3m m\u1ed9t key c\u00e1 nh\u00e2n (private key) v\u00e0 key c\u00f4ng khai (public key). Private key v\u00e0 Public key c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhau nh\u1eb1m m\u1ee5c \u0111\u00edch nh\u1eadn di\u1ec7n l\u1eabn nhau.<\/p>\n\n\n\n<p>SSH Key th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 thay th\u1ebf cho m\u1eadt kh\u1ea9u b\u1eb1ng c\u00e1ch x\u00e1c minh quy\u1ec1n truy c\u1eadp. B\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01a1n gi\u1ea3n, c\u00e1ch th\u1ee9c \u0111\u0103ng nh\u1eadp n\u00e0y theo d\u1ea1ng h\u1ecfi v\u00e0 tr\u1ea3 l\u1eddi, trong \u0111\u00f3 m\u1ed9t b\u00ean tr\u00ecnh b\u00e0y c\u00e2u h\u1ecfi v\u00e0 b\u00ean kh\u00e1c ph\u1ea3i cung c\u1ea5p m\u1ed9t c\u00e2u tr\u1ea3 l\u1eddi h\u1ee3p l\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c ch\u1ee9ng th\u1ef1c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-198.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9362\" title=\"\"><\/figure>\n<\/div>\n\n\n<h3 id=\"Th\u00e0nh_ph\u1ea7n_ch\u00ednh_c\u1ee7a_m\u1ed9t_SSH_Key\"><strong>Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ed9t SSH Key<\/strong><\/h3>\n\n\n\n<p>M\u1ed9t SSH Key s\u1ebd c\u00f3 3 th\u00e0nh ph\u1ea7n ch\u00ednh g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Public Key (d\u1ea1ng file v\u00e0 string): <\/strong>B\u1ea1n ph\u1ea3i copy k\u00fd t\u1ef1 key n\u00e0y s\u1ebd b\u1ecf v\u00e0o file <strong>~\/.ssh\/authorized_keys<\/strong> tr\u00ean server c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Private Key (d\u1ea1ng file v\u00e0 string):<\/strong> File n\u00e0y \u0111\u01b0\u1ee3c l\u01b0u v\u00e0o m\u00e1y t\u00ednh, sau \u0111\u00f3 b\u1ea1n c\u1ea7n thi\u1ebft l\u1eadp cho <a href=\"https:\/\/tino.vn\/blog\/putty-la-gi\/\" target=\"_blank\" data-type=\"post\" data-id=\"44880\" rel=\"noreferrer noopener\">PuTTY<\/a>, <a href=\"https:\/\/tino.vn\/blog\/winscp-la-gi\/\" data-type=\"post\" data-id=\"1111\">WinSCP<\/a>, Xshell,..\u0111\u1ec3 c\u00f3 th\u1ec3 login.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Keyphrase (d\u1ea1ng string, c\u1ea7n ghi nh\u1edb):<\/strong> M\u1eadt kh\u1ea9u \u0111\u1ec3 m\u1edf private key, khi \u0111\u0103ng nh\u1eadp v\u00e0o server b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c h\u1ecfi c\u00e1i n\u00e0y.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"C\u00e1ch_th\u1ee9c_ho\u1ea1t_\u0111\u1ed9ng_c\u1ee7a_SSH_Key\"><strong>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SSH Key<\/strong><\/h3>\n\n\n\n<p>\u0110\u1ec3 s\u1eed d\u1ee5ng SSH Key, \u0111\u1ea7u ti\u00ean b\u1ea1n ph\u1ea3i c\u00f3 Private Key v\u00e0 Public Key.<\/p>\n\n\n\n<p>Public Key s\u1ebd \u0111\u01b0\u1ee3c upload l\u00ean m\u00e1y ch\u1ee7, c\u00f2n private key b\u1ea1n l\u01b0u \u1edf m\u00e1y. Khi \u0111\u0103ng nh\u1eadp v\u00e0o <a href=\"https:\/\/tino.vn\/blog\/vps-la-gi\/\" data-type=\"post\" data-id=\"53016\">server<\/a>, m\u1ed9t y\u00eau c\u1ea7u \u0111\u0103ng nh\u1eadp s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi k\u00e8m theo Private Key. Sau khi nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u, server s\u1ebd ki\u1ec3m tra xem c\u00e1i Private key c\u1ee7a b\u1ea1n c\u00f3 kh\u1edbp v\u1edbi Public key c\u00f3 tr\u00ean server hay kh\u00f4ng, n\u1ebfu c\u00f3 th\u00ec b\u1ea1n s\u1ebd \u0111\u0103ng nh\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p>M\u1eb7c d\u00f9 n\u1ed9i dung gi\u1eefa Private Key v\u00e0 Public Key kh\u00f4ng gi\u1ed1ng nhau, nh\u01b0ng nh\u1edd v\u00e0o thu\u1eadt to\u00e1n ri\u00eang m\u00e0 ch\u00fang v\u1eabn nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-199.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9363\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-199.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-199-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h2 id=\"\u01afu_\u0111i\u1ec3m_v\u00e0_nh\u01b0\u1ee3c_\u0111i\u1ec3m_c\u1ee7a_SSH_Key\"><strong>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SSH Key<\/strong><\/h2>\n\n\n\n<h3 id=\"\u01afu_\u0111i\u1ec3m\"><strong>\u01afu \u0111i\u1ec3m<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00f9ng SSH Key kh\u00f3 b\u1ecb hack v\u00e0 an to\u00e0n h\u01a1n d\u00f9ng m\u1eadt kh\u1ea9u<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>K\u1ebft n\u1ed1i SSH ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb m\u00e1y t\u00ednh c\u00f3 ch\u1ee9a private key trong \u0111\u00f3. B\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng nh\u1eadp b\u1eb1ng m\u1eadt kh\u1ea9u t\u1eeb b\u1ea5t k\u1ef3 m\u00e1y t\u00ednh n\u00e0o, th\u1eadm ch\u00ed c\u1ea3 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n c\u00f4ng c\u1ed9ng t\u1ea1i th\u01b0 vi\u1ec7n.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cho ph\u00e9p nhi\u1ec1u ng\u01b0\u1eddi \u0111\u0103ng nh\u1eadp v\u1edbi c\u00f9ng t\u00ean ng\u01b0\u1eddi d\u00f9ng (user) tr\u00ean h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng ph\u1ea3i chia s\u1ebb m\u1ed9t m\u1eadt kh\u1ea9u.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trong l\u00fac nhi\u1ec1u ng\u01b0\u1eddi c\u00f9ng truy c\u1eadp, c\u00f3 th\u1ec3 thu h\u1ed3i quy\u1ec1n truy c\u1eadp c\u1ee7a b\u1ea5t k\u1ef3 ai.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gi\u00fap \u0111\u0103ng nh\u1eadp v\u00e0o nhi\u1ec1u t\u00e0i kho\u1ea3n SSH d\u1ec5 d\u00e0ng h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i qu\u1ea3n l\u00fd nhi\u1ec1u m\u1eadt kh\u1ea9u.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cho ph\u00e9p th\u00eam m\u1eadt kh\u1ea9u cho x\u00e1c th\u1ef1c SSH key (x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1) \u0111\u1ec3 t\u0103ng t\u00ednh b\u1ea3o m\u1eadt h\u01a1n n\u1eefa.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"Nh\u01b0\u1ee3c_\u0111i\u1ec3m\"><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Private key c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean thi\u1ebft b\u1ecb (m\u00e1y t\u00ednh, laptop, \u0111i\u1ec7n tho\u1ea1i) m\u00e0 b\u1ea1n \u0111\u0103ng nh\u1eadp. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a n\u1ebfu thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n b\u1ecb \u0111\u00e1nh c\u1ea5p ho\u1eb7c b\u1ecb m\u1ea5t s\u1ebd r\u1ea5t nguy hi\u1ec3m.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thi\u1ebft l\u1eadp SSH Key c\u1ea7n nhi\u1ec1u thao t\u00e1c.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vi\u1ec7c ph\u00e2n ph\u1ed1i public key v\u00e0 h\u01b0\u1edbng d\u1eabn c\u00e1ch s\u1eed d\u1ee5ng SSH key c\u00f3 th\u1ec3 s\u1ebd ph\u1ee9c t\u1ea1p h\u01a1n m\u1ed9t ch\u00fat.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"C\u00e1ch_t\u1ea1o_SSH_Key\"><strong>C\u00e1ch t\u1ea1o SSH Key<\/strong><\/h2>\n\n\n\n<p>C\u00f3 th\u1ec3 th\u00f4ng qua nhi\u1ec1u c\u00e1ch \u0111\u1ec3 t\u1ea1o SSH Key. Mi\u1ec5n l\u00e0 sau khi t\u1ea1o xong, Public Key s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u \u1edf v\u1ecb tr\u00ed ph\u00f9 h\u1ee3p t\u1ea1i Server, c\u00f2n Private key d\u00f9ng \u1edf m\u00e1y kh\u00e1ch \u0111\u1ec3 k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<h3 id=\"\u0110\u1ed1i_v\u1edbi_h\u1ec7_\u0111i\u1ec1u_h\u00e0nh_Windows\"><strong>\u0110\u1ed1i v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows<\/strong><\/h3>\n\n\n\n<h4 id=\"T\u1ea1o_SSH_key\"><strong>T\u1ea1o SSH key<\/strong><\/h4>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m PuTTY-Gen \u0111\u1ec3 t\u1ea1o SSH key. Link download PuTTY- Gen t\u1ea1i<a href=\"https:\/\/www.putty.org\/\" class=\"rank-math-link\" rel=\"nofollow noopener\" target=\"_blank\"> <\/a><a href=\"https:\/\/www.putty.org\/\" target=\"_blank\" class=\"rank-math-link\" rel=\"noopener nofollow\">https:\/\/www.putty.org\/<\/a>. Sau khi \u0111\u00e3 c\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m, h\u00e3y m\u1edf ra v\u00e0 ch\u1ecdn c\u00e1c t\u00f9y ch\u1ecdn nh\u01b0 trong \u1ea3nh d\u01b0\u1edbi r\u1ed3i \u1ea5n <strong>Generate<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-200.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9364\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-200.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-200-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p>Sau khi t\u1ea1o xong, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t h\u1ee3p tho\u1ea1i nh\u01b0 sau:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-201.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9365\" title=\"\"><\/figure>\n<\/div>\n\n\n<p>Ti\u1ebfp t\u1ee5c, h\u00e3y t\u1ea1o<strong> passphrase<\/strong> b\u1eb1ng c\u00e1ch \u0111i\u1ec1n v\u00e0o \u00f4 <strong>passphrase<\/strong> \u1edf tr\u00ean (kh\u00f4ng c\u1ea7n \u0111i\u1ec1n v\u00e0o m\u1ee5c n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-202.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9366\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-202.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-202-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p>Sau \u0111\u00f3 \u1ea5n <strong>Save Private Key<\/strong> v\u00e0 l\u01b0u n\u00f3 tr\u00ean m\u1ed9t n\u01a1i th\u1eadt an to\u00e0n<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-203.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9367\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-203.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-203-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h4 id=\"C\u00e1ch_th\u00eam_SSH_Key_v\u00e0o_trong_VPS\"><strong>C\u00e1ch th\u00eam SSH Key v\u00e0o trong VPS<\/strong><\/h4>\n\n\n\n<p>B\u00e2y gi\u1edd h\u00e3y \u0111\u0103ng nh\u1eadp v\u00e0o VPS v\u1edbi user m\u00e0 b\u1ea1n c\u1ea7n th\u00eam key (th\u01b0\u1eddng th\u00ec l\u00e0 root, nh\u01b0ng n\u1ebfu VPS b\u1ea1n c\u00f3 nhi\u1ec1u user th\u00ec s\u1ebd c\u1ea7n th\u00eam key cho t\u1ea5t c\u1ea3 user \u0111\u00f3).<\/p>\n\n\n\n<p>Sau \u0111\u00f3 g\u00f5 c\u00e1c l\u1ec7nh d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 t\u1ea1o th\u01b0 m\u1ee5c .ssh\/ v\u00e0 file authorized_keys trong th\u01b0 m\u1ee5c \u0111\u00f3:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ mkdir ~\/.ssh\n\n$ chmod 700 ~\/.ssh\n\n$ touch ~\/.ssh\/authorized_keys\n\n$ chmod 600 ~\/.ssh\/authorized_keys<\/code><\/pre>\n\n\n\n<p>Cu\u1ed1i c\u00f9ng m\u1edf file authorized_keys trong th\u01b0 m\u1ee5c .ssh \u1edf th\u01b0 m\u1ee5c g\u1ed1c c\u1ee7a user v\u00e0 copy to\u00e0n b\u1ed9 k\u00fd t\u1ef1 c\u1ee7a public key v\u00e0o<\/p>\n\n\n\n<h4 id=\"C\u00e1ch_s\u1eed_d\u1ee5ng_SSH_KEY_\u0111\u1ec3_login_v\u00e0o_VPS\"><strong>C\u00e1ch s\u1eed d\u1ee5ng SSH KEY \u0111\u1ec3 login v\u00e0o VPS<\/strong><\/h4>\n\n\n\n<p>Tr\u01b0\u1edbc ti\u00ean, b\u1ea1n h\u00e3y \u0111\u0103ng nh\u1eadp l\u1ea1i v\u00e0o SSH v\u1edbi t\u00e0i kho\u1ea3n SSH Key \u0111\u1ec3 ki\u1ec3m tra xem \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng ch\u01b0a. <\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n \u0111\u0103ng nh\u1eadp \u1edf Windows th\u00f4ng qua c\u00e1c ph\u1ea7n m\u1ec1m kh\u00e1c nh\u01b0 PuTTY th\u00ec khi \u0111\u0103ng nh\u1eadp, b\u1ea1n ph\u1ea3i \u0111\u01b0a file private key v\u00e0o \u0111\u1ec3 ch\u1ee9ng th\u1ef1c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-204.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9368\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-204.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-204-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p>Khi login v\u00e0o VPS b\u1ea1n s\u1ebd ph\u1ea3i x\u00e1c th\u1ef1c th\u00f4ng qua \u0111\u01b0\u1eddng d\u1eabn c\u1ee7a file SSH Key v\u1eeba m\u1edbi t\u1ea1o<\/p>\n\n\n\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng th\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o VPS c\u1ee7a b\u1ea1n b\u1eb1ng m\u1eadt kh\u1ea9u root v\u00e0 user n\u1eefa b\u1ea1n c\u1ea7n v\u00e0o file sshd_config v\u00e0 th\u1ef1c hi\u1ec7n nh\u1eefng c\u00e2u l\u1ec7nh sau:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cd \/etc\/ssh\n\ncp sshd_config sshd_config.orig\n\nnano sshd_config<\/code><\/pre>\n\n\n\n<p>Ch\u1ec9nh s\u1eeda nh\u1eefng d\u00f2ng t\u01b0\u01a1ng \u1ee9ng b\u00ean d\u01b0\u1edbi<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>PermitRootLogin yes\n\nPasswordAuthentication yes\n\nUsePAM yes<\/code><\/pre>\n\n\n\n<p>Sau khi ch\u1ec9nh s\u1eeda:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>PermitRootLogin yes\n\nPasswordAuthentication no\n\nUsePAM no<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>L\u01b0u file v\u1edbi t\u1ed5 h\u1ee3p ph\u00edm Ctrl + O v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i SSH:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/etc\/init.d\/ssh restart<\/code><\/pre>\n\n\n\n<p>L\u01b0u \u00fd: n\u1ebfu b\u1ea1n t\u1eaft ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c b\u1eb1ng password th\u00ec b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 \u0111\u0103ng nh\u1eadp b\u1eb1ng passwords n\u1eefa. Ch\u1ec9 c\u00f3 th\u1ec3 login b\u1eb1ng private key t\u01b0\u01a1ng \u1ee9ng v\u1edbi public key \u0111\u00e3 l\u01b0u.<\/p>\n\n\n\n<h3 id=\"\u0110\u1ed1i_v\u1edbi_h\u1ec7_\u0111i\u1ec1u_h\u00e0nh_Linux\"><strong>\u0110\u1ed1i v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux<\/strong><\/h3>\n\n\n\n<h4 id=\"C\u00e1ch_t\u1ea1o_SSH_Key\"><strong>C\u00e1ch t\u1ea1o SSH Key<\/strong><\/h4>\n\n\n\n<p>\u0110\u1ea7u ti\u00ean, b\u1ea1n h\u00e3y b\u1eadt <strong>terminal<\/strong> l\u00ean, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n c\u00e2u l\u1ec7nh sau \u0111\u1ec3 t\u1ea1o Public Key<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># ssh-keygen -t rsa<\/code><\/pre>\n\n\n\n<p>Sau khi b\u1ea1n ch\u1ea1y l\u1ec7nh tr\u00ean m\u00e0n h\u00ecnh s\u1ebd hi\u1ec7n ra th\u00f4ng b\u00e1o hi\u1ec3n th\u1ecb \u0111\u01b0\u1eddng d\u1eabn l\u01b0u key \u0111\u01b0\u1ee3c t\u1ea1o ra, m\u1eb7c \u0111\u1ecbnh key public v\u00e0 private s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u trong \u0111\u01b0\u1eddng d\u1eabn \/root\/.ssh\/<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-205.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9369\" title=\"\"><\/figure>\n<\/div>\n\n\n<h4 id=\"C\u00e1ch_\u0111\u01b0a_SSH_Key_v\u00e0o_trong_VPS\"><strong>C\u00e1ch \u0111\u01b0a SSH Key v\u00e0o trong VPS<\/strong><\/h4>\n\n\n\n<p>\u0110\u1ec3 \u0111\u01b0a SSH Key v\u00e0o VPS h\u00e3y copy \u0111o\u1ea1n Key n\u00e0y t\u1edbi VPS c\u1ee7a c\u00e1c b\u1ea1n, ngay t\u1ea1i m\u00e1y Linux c\u1ee7a c\u00e1c b\u1ea1n ta th\u1ef1c hi\u1ec7n l\u1ec7nh sau:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- wp:quote --&gt;\n&lt;blockquote class=\"wp-block-quote\"&gt;&lt;p&gt;#ssh-copy-id \u2013i ~\/.ssh\/id_rsa IP (\u0111\u1ecba ch\u1ec9 IP c\u1ee7a VPS)&lt;\/p&gt;&lt;\/blockquote&gt;\n&lt;!-- \/wp:quote --&gt;<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-206.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9370\" title=\"\"><\/figure>\n<\/div>\n\n\n<p>V\u1edbi thao t\u00e1c n\u00e0y \u0111o\u1ea1n m\u00e3 SSH Key v\u1eeba t\u1ea1o tr\u00ean m\u00e1y linux c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n v\u00e0o VPS t\u1ea1i th\u01b0 m\u1ee5c \/root\/.ssh\/authorized_keys<\/p>\n\n\n\n<h4 id=\"\u0110\u0103ng_nh\u1eadp_SSH_t\u1eeb_m\u00e1y_linux_t\u1edbi_VPS\"><strong>\u0110\u0103ng nh\u1eadp SSH t\u1eeb m\u00e1y linux t\u1edbi VPS<\/strong><\/h4>\n\n\n\n<p>\u0110\u1ec3 \u0111\u0103ng nh\u1eadp SSH t\u1eeb m\u00e1y t\u00ednh linux t\u1edbi VPS b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e2u l\u1ec7nh<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># ssh -i .ssh\/id_rsa IP<\/code><\/pre>\n\n\n\n<p>th\u00f4ng b\u00e1o sau s\u1ebd hi\u1ec7n ra<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2021\/05\/word-image-207.png\" alt=\"SSH-key-la-gi\" class=\"wp-image-9371\" title=\"\"><\/figure>\n<\/div>\n\n\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c s\u1eed d\u1ee5ng SSH Key l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p \u0111\u1ec3 thay th\u1ebf cho ph\u01b0\u01a1ng th\u1ee9c \u0111\u0103ng nh\u1eadp b\u1eb1ng m\u1eadt kh\u1ea9u truy\u1ec1n th\u1ed1ng, gi\u00fap cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c an to\u00e0n m\u1ed9t c\u00e1ch tuy\u1ec7t \u0111\u1ed1i. Qua b\u00e0i vi\u1ebft hy v\u1ecdng b\u1ea1n s\u1ebd hi\u1ec3u SSH Key l\u00e0 g\u00ec, c\u00e1ch s\u1eed d\u1ee5ng n\u00f3 ra sao. Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng.<\/p>\n\n\n\n<h2 id=\"FAQs_v\u1ec1_SSH_Key\"><strong>FAQs v\u1ec1 SSH Key<\/strong><\/h2>\n\n\n\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"SSH_Key_c\u00f3_th\u1ef1c_s\u1ef1_t\u1ed1t_h\u01a1n_Password_kh\u00f4ng?\">SSH Key c\u00f3 th\u1ef1c s\u1ef1 t\u1ed1t h\u01a1n Password kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>So v\u1edbi Password, ph\u01b0\u01a1ng th\u1ee9c b\u1ea3o m\u1eadt b\u1eb1ng SSH Key g\u1ea7n nh\u01b0 t\u1ed1t h\u01a1n ho\u00e0n to\u00e0n. Tuy nhi\u00ean, SSH kh\u00f4ng h\u1eb3n l\u00e0 ho\u00e0n h\u1ea3o v\u00ec b\u00ean c\u1ea1nh \u01b0u \u0111i\u1ec3m v\u1eabn c\u00f3 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u00e3 k\u1ec3 b\u00ean tr\u00ean b\u00e0i vi\u1ebft. V\u00ec v\u1eady, N\u1ebfu b\u1ea1n l\u00e0 ng\u01b0\u1eddi th\u00edch s\u1ef1 \u0111\u01a1n gi\u1ea3n th\u00ec v\u1eabn c\u00f3 th\u1ec3 d\u00f9ng Password \u0111\u1ec3 b\u1ea3o m\u1eadt.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"C\u00f3_n\u00ean_v\u00f4_hi\u1ec7u_h\u00f3a_ch\u1ee9c_n\u0103ng_x\u00e1c_th\u1ef1c_password_\u0111\u1ed1i_khi_t\u1ea1o_SSH_Key_kh\u00f4ng?\">C\u00f3 n\u00ean v\u00f4 hi\u1ec7u h\u00f3a ch\u1ee9c n\u0103ng x\u00e1c th\u1ef1c password \u0111\u1ed1i khi t\u1ea1o SSH Key kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>: N\u00ean. Sau khi ki\u1ec3m tra, n\u1ebfu b\u1ea1n th\u1ea5y \u0111\u00e3 c\u00f3 th\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o server b\u1eb1ng SSH Key th\u00ec c\u00f3 th\u1ec3 t\u1eaft ch\u1ee9c n\u0103ng s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u \u0111i v\u00ec n\u1ebfu kh\u00f4ng t\u1eaft, c\u00e1c attacker v\u1eabn brute force attack nh\u01b0 th\u01b0\u1eddng v\u00e0 b\u1ea1n v\u1eabn b\u1ecb m\u1ea5t d\u1eef li\u1ec7u n\u1ebfu l\u1ed9 m\u1eadt kh\u1ea9u.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"C\u00f3_th\u1ec3_t\u1ea1o_SSH_Keys_tr\u00ean_portal_kh\u00f4ng_hay_ph\u1ea3i_t\u1ea1o_t\u1eeb_\u1ee9ng_d\u1ee5ng_kh\u00e1c?\">C\u00f3 th\u1ec3 t\u1ea1o SSH Keys tr\u00ean portal kh\u00f4ng hay ph\u1ea3i t\u1ea1o t\u1eeb \u1ee9ng d\u1ee5ng kh\u00e1c?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o SSH keys ngay tr\u00ean giao di\u1ec7n qu\u1ea3n tr\u1ecb ho\u1eb7c t\u1ea1o t\u1eeb ph\u1ea7n m\u1ec1m kh\u00e1c v\u00e0 copy keys l\u00ean trang portal. H\u01a1n n\u1eefa,b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 th\u00eam m\u1ed9t ho\u1eb7c nhi\u1ec1u ssh keys l\u00ean trang qu\u1ea3n tr\u1ecb. Trong qu\u00e1 tr\u00ecnh t\u1ea1o Elastic Compute, b\u1ea1n \u0111\u01b0\u1ee3c ph\u00e9p ch\u1ecdn SSH key n\u00e0o s\u1ebd \u0111\u01b0\u1ee3c th\u00eam v\u00e0o VM khi VM \u0111\u01b0\u1ee3c t\u1ea1o.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"Ngo\u00e0i_SSH_Key_v\u00e0_Password,_c\u00f2n_ph\u01b0\u01a1ng_ph\u00e1p_b\u1ea3o_m\u1eadt_d\u1eef_li\u1ec7u_n\u00e0o_kh\u00e1c_n\u1eefa_kh\u00f4ng?\">Ngo\u00e0i SSH Key v\u00e0 Password, c\u00f2n ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt d\u1eef li\u1ec7u n\u00e0o kh\u00e1c n\u1eefa kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt d\u1eef li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u1ea3o m\u1eadt d\u1eef li\u1ec7u b\u1eb1ng t\u01b0\u1eddng l\u1eeda: vai tr\u00f2 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u1ed9t c\u00f4ng c\u1ee5 ki\u1ec3m tra kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i v\u00e0 b\u1ea3o m\u1eadt gi\u1eefa m\u1ea1ng m\u00e1y t\u00ednh \u0111\u00e1ng tin c\u1eady v\u00e0 kh\u00f4ng \u0111\u00e1ng tin c\u1eady<\/li>\n\n\n\n<li>B\u1ea3o m\u1eadt b\u1eb1ng PKI: \u0110\u00e2y l\u00e0 kh\u00f3a c\u00f4ng khai \u2013 m\u1ed9t c\u01a1 ch\u1ebf do b\u00ean th\u1ee9 3 cung c\u1ea5p \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng v\u1edbi m\u1ee5c \u0111\u00edch x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c b\u00ean \u0111\u00e3 tham gia v\u00e0o qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i th\u00f4ng tin.<\/li>\n\n\n\n<li>B\u1ea3o m\u1eadt b\u1eb1ng SSL\/TLS: \u0110\u00e2y l\u00e0 giao th\u1ee9c b\u1eb1ng m\u1eadt m\u00e3, b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i tr\u00ean m\u1ea1ng internet.<\/li>\n\n\n\n<li>B\u1ea3o m\u1eadt b\u1eb1ng <a href=\"https:\/\/tino.vn\/blog\/vpn-la-gi\/\" data-type=\"post\" data-id=\"15587\">VPN<\/a>: l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng ri\u00eang \u1ea3o c\u00f3 s\u1eb5n cho c\u00e1c m\u00e1y ch\u1ee7 ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t \u0111\u1ecbnh. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00e1ch \u0111\u1ec3 t\u1ea1o k\u1ebft n\u1ed1i an to\u00e0n gi\u1eefa c\u00e1c m\u00e1y t\u00ednh t\u1eeb xa v\u1edbi m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. V\u00e0 ch\u00fang \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i nh\u01b0 m\u1ed9t m\u1ea1ng local ri\u00eang.<\/li>\n<\/ul>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"SSH Key c\u00f3 th\u1ef1c s\u1ef1 t\u1ed1t h\u01a1n Password kh\u00f4ng?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>So v\u1edbi Password, ph\u01b0\u01a1ng th\u1ee9c b\u1ea3o m\u1eadt b\u1eb1ng SSH Key g\u1ea7n nh\u01b0 t\u1ed1t h\u01a1n ho\u00e0n to\u00e0n. Tuy nhi\u00ean, SSH kh\u00f4ng h\u1eb3n l\u00e0 ho\u00e0n h\u1ea3o v\u00ec b\u00ean c\u1ea1nh \u01b0u \u0111i\u1ec3m v\u1eabn c\u00f3 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u00e3 k\u1ec3 b\u00ean tr\u00ean b\u00e0i vi\u1ebft. V\u00ec v\u1eady, N\u1ebfu b\u1ea1n l\u00e0 ng\u01b0\u1eddi th\u00edch s\u1ef1 \u0111\u01a1n gi\u1ea3n th\u00ec v\u1eabn c\u00f3 th\u1ec3 d\u00f9ng Password \u0111\u1ec3 b\u1ea3o m\u1eadt.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"C\u00f3 n\u00ean v\u00f4 hi\u1ec7u h\u00f3a ch\u1ee9c n\u0103ng x\u00e1c th\u1ef1c password \u0111\u1ed1i khi t\u1ea1o SSH Key kh\u00f4ng?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>: N\u00ean. Sau khi ki\u1ec3m tra, n\u1ebfu b\u1ea1n th\u1ea5y \u0111\u00e3 c\u00f3 th\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o server b\u1eb1ng SSH Key th\u00ec c\u00f3 th\u1ec3 t\u1eaft ch\u1ee9c n\u0103ng s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u \u0111i v\u00ec n\u1ebfu kh\u00f4ng t\u1eaft, c\u00e1c attacker v\u1eabn brute force attack nh\u01b0 th\u01b0\u1eddng v\u00e0 b\u1ea1n v\u1eabn b\u1ecb m\u1ea5t d\u1eef li\u1ec7u n\u1ebfu l\u1ed9 m\u1eadt kh\u1ea9u.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"C\u00f3 th\u1ec3 t\u1ea1o SSH Keys tr\u00ean portal kh\u00f4ng hay ph\u1ea3i t\u1ea1o t\u1eeb \u1ee9ng d\u1ee5ng kh\u00e1c?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o SSH keys ngay tr\u00ean giao di\u1ec7n qu\u1ea3n tr\u1ecb ho\u1eb7c t\u1ea1o t\u1eeb ph\u1ea7n m\u1ec1m kh\u00e1c v\u00e0 copy keys l\u00ean trang portal. H\u01a1n n\u1eefa,b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 th\u00eam m\u1ed9t ho\u1eb7c nhi\u1ec1u ssh keys l\u00ean trang qu\u1ea3n tr\u1ecb. Trong qu\u00e1 tr\u00ecnh t\u1ea1o Elastic Compute, b\u1ea1n \u0111\u01b0\u1ee3c ph\u00e9p ch\u1ecdn SSH key n\u00e0o s\u1ebd \u0111\u01b0\u1ee3c th\u00eam v\u00e0o VM khi VM \u0111\u01b0\u1ee3c t\u1ea1o.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Ngo\u00e0i SSH Key v\u00e0 Password, c\u00f2n ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt d\u1eef li\u1ec7u n\u00e0o kh\u00e1c n\u1eefa kh\u00f4ng?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt d\u1eef li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u01b0:<\/p><ul><li>B\u1ea3o m\u1eadt d\u1eef li\u1ec7u b\u1eb1ng t\u01b0\u1eddng l\u1eeda: vai tr\u00f2 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u1ed9t c\u00f4ng c\u1ee5 ki\u1ec3m tra kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i v\u00e0 b\u1ea3o m\u1eadt gi\u1eefa m\u1ea1ng m\u00e1y t\u00ednh \u0111\u00e1ng tin c\u1eady v\u00e0 kh\u00f4ng \u0111\u00e1ng tin c\u1eady<\/li><li>B\u1ea3o m\u1eadt b\u1eb1ng PKI: \u0110\u00e2y l\u00e0 kh\u00f3a c\u00f4ng khai \u2013 m\u1ed9t c\u01a1 ch\u1ebf do b\u00ean th\u1ee9 3 cung c\u1ea5p \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng v\u1edbi m\u1ee5c \u0111\u00edch x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c b\u00ean \u0111\u00e3 tham gia v\u00e0o qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i th\u00f4ng tin.<\/li><li>B\u1ea3o m\u1eadt b\u1eb1ng SSL\/TLS: \u0110\u00e2y l\u00e0 giao th\u1ee9c b\u1eb1ng m\u1eadt m\u00e3, b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i tr\u00ean m\u1ea1ng internet.<\/li><li>B\u1ea3o m\u1eadt b\u1eb1ng <a>VPN<\/a>: l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng ri\u00eang \u1ea3o c\u00f3 s\u1eb5n cho c\u00e1c m\u00e1y ch\u1ee7 ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t \u0111\u1ecbnh. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00e1ch \u0111\u1ec3 t\u1ea1o k\u1ebft n\u1ed1i an to\u00e0n gi\u1eefa c\u00e1c m\u00e1y t\u00ednh t\u1eeb xa v\u1edbi m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. V\u00e0 ch\u00fang \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i nh\u01b0 m\u1ed9t m\u1ea1ng local ri\u00eang.<\/li><\/ul>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t\t\t]\n\t}\n<\/script>\n\n\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea3o m\u1eadt l\u00fac n\u00e0o c\u0169ng l\u00e0 v\u1ea5n \u0111\u1ec1 n\u00f3ng b\u1ecfng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong th\u1eddi k\u1ef3 c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n nh\u01b0 hi\u1ec7n nay, khi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng d\u1ea7n tr\u1edf n\u00ean \u0111a d\u1ea1ng v\u00e0 kh\u00f3 ki\u1ec3m so\u00e1t h\u01a1n. \u0110\u1ec3 d\u1eef li\u1ec7u lu\u00f4n \u0111\u01b0\u1ee3c an to\u00e0n, nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt m\u00e1y [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":29571,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5404],"tags":[6706],"class_list":["post-10946","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-webmasters","tag-kien-thuc-lap-trinh"],"_links":{"self":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/10946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/comments?post=10946"}],"version-history":[{"count":1,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/10946\/revisions"}],"predecessor-version":[{"id":99063,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/10946\/revisions\/99063"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media\/29571"}],"wp:attachment":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media?parent=10946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/categories?post=10946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/tags?post=10946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}