{"id":12,"date":"2026-03-21T06:01:33","date_gmt":"2026-03-20T23:01:33","guid":{"rendered":"https:\/\/ivi.vn\/blog\/tich-hop-webcake-ten-mien-ivi\/"},"modified":"2026-08-24T18:43:58","modified_gmt":"2026-08-24T11:43:58","slug":"tich-hop-webcake-ten-mien-ivi","status":"publish","type":"post","link":"https:\/\/ivi.vn\/blog\/tich-hop-webcake-ten-mien-ivi\/","title":{"rendered":"G\u1eafn t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n v\u00e0o landing page Webcake: nguy\u00ean l\u00fd DNS, SSL v\u00e0 c\u00e1c b\u1eaby hay g\u1eb7p"},"content":{"rendered":"<p>B\u1ea1n d\u1ef1ng xong m\u1ed9t trang \u0111\u00edch tr\u00ean Webcake, nh\u01b0ng \u0111\u1ecba ch\u1ec9 v\u1eabn l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn m\u1eb7c \u0111\u1ecbnh c\u1ee7a n\u1ec1n t\u1ea3ng. Ch\u1ea1y qu\u1ea3ng c\u00e1o b\u1eb1ng \u0111\u1ecba ch\u1ec9 \u0111\u00f3 th\u00ec kh\u00e1ch nh\u00ecn th\u1ea5y t\u00ean c\u1ee7a c\u00f4ng c\u1ee5 ch\u1ee9 kh\u00f4ng nh\u00ecn th\u1ea5y t\u00ean c\u1ee7a b\u1ea1n. Vi\u1ec7c c\u1ea7n l\u00e0m l\u00e0 g\u1eafn t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n v\u00e0o trang \u0111\u00f3 \u2014 v\u00e0 b\u00e0i n\u00e0y n\u00f3i v\u1ec1 nguy\u00ean l\u00fd c\u1ee7a vi\u1ec7c g\u1eafn, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t chu\u1ed7i \u1ea3nh ch\u1ee5p m\u00e0n h\u00ecnh s\u1ebd l\u1ed7i th\u1eddi sau l\u1ea7n c\u1eadp nh\u1eadt giao di\u1ec7n k\u1ebf ti\u1ebfp.<\/p>\n<h2>Chuy\u1ec7n g\u00ec th\u1eadt s\u1ef1 x\u1ea3y ra khi b\u1ea1n &#8220;g\u1eafn t\u00ean mi\u1ec1n&#8221;<\/h2>\n<p>C\u00f4ng c\u1ee5 d\u1ef1ng trang b\u00ean th\u1ee9 ba kh\u00f4ng gi\u1eef t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n. N\u00f3 ch\u1ec9 gi\u1eef n\u1ed9i dung trang. G\u1eafn t\u00ean mi\u1ec1n l\u00e0 m\u1ed9t tho\u1ea3 thu\u1eadn ba b\u00ean, g\u1ed3m \u0111\u00fang ba vi\u1ec7c, lu\u00f4n theo th\u1ee9 t\u1ef1 n\u00e0y:<\/p>\n<ol>\n<li><strong>Tr\u1ecf \u0111\u01b0\u1eddng<\/strong> \u2014 b\u1ea1n t\u1ea1o m\u1ed9t b\u1ea3n ghi DNS \u0111\u1ec3 tr\u00ecnh duy\u1ec7t c\u1ee7a kh\u00e1ch bi\u1ebft ph\u1ea3i \u0111i t\u1edbi m\u00e1y ch\u1ee7 n\u00e0o khi g\u00f5 t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>X\u00e1c minh<\/strong> \u2014 n\u1ec1n t\u1ea3ng kia ph\u1ea3i ch\u1eafc ch\u1eafn b\u1ea1n c\u00f3 quy\u1ec1n v\u1edbi t\u00ean mi\u1ec1n, n\u1ebfu kh\u00f4ng th\u00ec ai c\u0169ng khai \u0111\u01b0\u1ee3c t\u00ean mi\u1ec1n c\u1ee7a ng\u01b0\u1eddi kh\u00e1c.<\/li>\n<li><strong>C\u1ea5p ch\u1ee9ng ch\u1ec9<\/strong> \u2014 sau khi hai b\u01b0\u1edbc tr\u00ean xong, n\u1ec1n t\u1ea3ng xin m\u1ed9t ch\u1ee9ng ch\u1ec9 TLS cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n \u0111\u1ec3 trang ch\u1ea1y \u0111\u01b0\u1ee3c tr\u00ean <code>https<\/code>.<\/li>\n<\/ol>\n<p>Hi\u1ec3u ba b\u01b0\u1edbc n\u00e0y th\u00ec m\u1ecdi l\u1ed7i b\u1ea1n g\u1eb7p \u0111\u1ec1u quy v\u1ec1 &#8220;m\u1ed9t trong ba b\u01b0\u1edbc ch\u01b0a xong&#8221;, v\u00e0 b\u1ea1n s\u1ebd t\u1ef1 ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c thay v\u00ec \u0111o\u00e1n m\u00f2.<\/p>\n<h2>CNAME hay A: ch\u1ecdn theo th\u1ee9 n\u1ec1n t\u1ea3ng \u0111\u01b0a cho b\u1ea1n<\/h2>\n<p>C\u00f4ng c\u1ee5 d\u1ef1ng trang s\u1ebd \u0111\u01b0a b\u1ea1n m\u1ed9t trong hai th\u1ee9: m\u1ed9t <em>t\u00ean m\u00e1y ch\u1ee7<\/em> (d\u1ea1ng <code>dns.webcake.io<\/code>) ho\u1eb7c m\u1ed9t <em>\u0111\u1ecba ch\u1ec9 IP<\/em>.<\/p>\n<ul>\n<li>\u0110\u01b0a t\u00ean m\u00e1y ch\u1ee7 th\u00ec b\u1ea1n t\u1ea1o b\u1ea3n ghi <code>CNAME<\/code>. \u01afu \u0111i\u1ec3m l\u1edbn: khi b\u00ean kia \u0111\u1ed5i m\u00e1y ch\u1ee7, h\u1ecd ch\u1ec9 \u0111\u1ed5i \u1edf \u0111\u1ea7u h\u1ecd, t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n t\u1ef1 \u0111i theo, b\u1ea1n kh\u00f4ng ph\u1ea3i s\u1eeda g\u00ec.<\/li>\n<li>\u0110\u01b0a \u0111\u1ecba ch\u1ec9 IP th\u00ec b\u1ea1n t\u1ea1o b\u1ea3n ghi <code>A<\/code>. Nh\u01b0\u1ee3c \u0111i\u1ec3m: b\u00ean kia \u0111\u1ed5i IP l\u00e0 trang c\u1ee7a b\u1ea1n ch\u1ebft cho t\u1edbi khi b\u1ea1n s\u1eeda tay.<\/li>\n<\/ul>\n<p>N\u1ebfu \u0111\u01b0\u1ee3c ch\u1ecdn, lu\u00f4n ch\u1ecdn <code>CNAME<\/code>. Nh\u01b0ng c\u00f3 m\u1ed9t c\u00e1i b\u1eaby \u0111i k\u00e8m m\u00e0 r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi c\u1eafn ph\u1ea3i.<\/p>\n<h2>C\u00e1i b\u1eaby l\u1edbn nh\u1ea5t: \u0111\u1eb7t CNAME \u1edf g\u1ed1c t\u00ean mi\u1ec1n<\/h2>\n<p>Theo chu\u1ea9n DNS, m\u1ed9t b\u1ea3n ghi <code>CNAME<\/code> <strong>kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i c\u00f9ng ch\u1ed7 v\u1edbi b\u1ea5t k\u1ef3 b\u1ea3n ghi n\u00e0o kh\u00e1c<\/strong> tr\u00ean c\u00f9ng m\u1ed9t t\u00ean. \u0110\u1eb7t <code>CNAME<\/code> t\u1ea1i g\u1ed1c t\u00ean mi\u1ec1n (th\u01b0\u1eddng ghi l\u00e0 <code>@<\/code>) ngh\u0129a l\u00e0 m\u1ecdi b\u1ea3n ghi kh\u00e1c \u0111ang n\u1eb1m \u1edf g\u1ed1c b\u1ecb v\u00f4 hi\u1ec7u.<\/p>\n<p>C\u1ee5 th\u1ec3, th\u1ee9 ch\u1ebft theo l\u00e0:<\/p>\n<ul>\n<li>B\u1ea3n ghi <code>MX<\/code> \u2014 b\u1ea1n ng\u1eebng nh\u1eadn \u0111\u01b0\u1ee3c email g\u1eedi t\u1edbi \u0111\u1ecba ch\u1ec9 theo t\u00ean mi\u1ec1n \u0111\u00f3.<\/li>\n<li>B\u1ea3n ghi <code>TXT<\/code> \u1edf g\u1ed1c \u2014 SPF, DMARC v\u00e0 c\u00e1c m\u00e3 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c \u0111\u1ec1u m\u1ea5t hi\u1ec7u l\u1ef1c.<\/li>\n<\/ul>\n<p>V\u1eady n\u00ean c\u00f3 m\u1ed9t quy t\u1eafc \u0111\u01a1n gi\u1ea3n, \u0111\u00e1ng d\u00e1n l\u00ean t\u01b0\u1eddng:<\/p>\n<blockquote>\n<p>T\u00ean mi\u1ec1n \u0111ang nh\u1eadn email, ho\u1eb7c \u0111ang gi\u1eef b\u1ea3n ghi x\u00e1c minh c\u1ee7a d\u1ecbch v\u1ee5 kh\u00e1c \u1edf g\u1ed1c, th\u00ec \u0111\u1eebng \u0111\u1eb7t trang \u0111\u00edch \u1edf g\u1ed1c. \u0110\u1eb7t \u1edf m\u1ed9t t\u00ean mi\u1ec1n con, v\u00ed d\u1ee5 <code>lp.tenban.com<\/code> ho\u1eb7c <code>uudai.tenban.com<\/code>.<\/p>\n<\/blockquote>\n<p>\u0110\u1eb7t \u1edf t\u00ean mi\u1ec1n con c\u00f2n c\u00f3 l\u1ee3i ph\u1ee5: b\u1ea1n ch\u1ea1y \u0111\u01b0\u1ee3c nhi\u1ec1u chi\u1ebfn d\u1ecbch song song tr\u00ean nhi\u1ec1u t\u00ean mi\u1ec1n con, m\u1ed7i chi\u1ebfn d\u1ecbch m\u1ed9t trang \u0111\u00edch ri\u00eang, m\u00e0 kh\u00f4ng \u0111\u1ee5ng v\u00e0o website ch\u00ednh. V\u1edbi t\u00ean mi\u1ec1n ch\u1ec9 d\u00f9ng ri\u00eang cho chi\u1ebfn d\u1ecbch, ch\u01b0a g\u1eafn email g\u00ec, th\u00ec \u0111\u1eb7t \u1edf g\u1ed1c ho\u00e0n to\u00e0n \u1ed5n.<\/p>\n<h2>Tr\u00ean ivi.vn: b\u1ea5m m\u1ed9t n\u00fat, ho\u1eb7c t\u1ef1 tay l\u00e0m<\/h2>\n<p>Trong dashboard, b\u1ea5m v\u00e0o t\u00ean mi\u1ec1n \u0111\u1ec3 m\u1edf c\u1eeda s\u1ed5 c\u1ea5u h\u00ecnh, ch\u1ecdn tab <strong>Landing Page<\/strong>. M\u00e0n h\u00ecnh hi\u1ec7n s\u1eb5n b\u1ea3n ghi s\u1eafp \u0111\u01b0\u1ee3c t\u1ea1o \u2014 lo\u1ea1i, t\u00ean, v\u00e0 \u0111\u00edch \u2014 r\u1ed3i b\u1ea1n b\u1ea5m n\u00fat k\u00edch ho\u1ea1t. H\u1ec7 th\u1ed1ng vi\u1ebft b\u1ea3n ghi <code>CNAME<\/code> v\u00e0 ghi nh\u1edb r\u1eb1ng t\u00ean mi\u1ec1n n\u00e0y \u0111ang \u1edf ch\u1ebf \u0111\u1ed9 trang \u0111\u00edch, n\u00ean l\u1ea7n sau m\u1edf l\u1ea1i n\u00f3 nh\u1ea3y th\u1eb3ng v\u00e0o \u0111\u00fang tab \u0111\u00f3.<\/p>\n<p>Mu\u1ed1n t\u1ef1 ki\u1ec3m so\u00e1t th\u00ec d\u00f9ng tab <strong>B\u1ea3n ghi DNS<\/strong> v\u00e0 t\u1ea1o b\u1ea3n ghi b\u1eb1ng tay. Tab \u0111\u00f3 h\u1ed7 tr\u1ee3 <code>A<\/code>, <code>AAAA<\/code>, <code>CNAME<\/code>, <code>MX<\/code>, <code>TXT<\/code>, <code>CAA<\/code>, m\u1ed7i b\u1ea3n ghi \u0111\u1eb7t TTL ri\u00eang.<\/p>\n<h3>M\u1ed9t chi ti\u1ebft b\u1ea1n ph\u1ea3i bi\u1ebft n\u1ebfu \u0111ang d\u00f9ng t\u00ean mi\u1ec1n ph\u1ee5 mi\u1ec5n ph\u00ed<\/h3>\n<p>T\u00ean mi\u1ec1n ph\u1ee5 d\u1ea1ng <code>t\u00ean-b\u1ea1n.ivi.vn<\/code> \u1edf b\u1ea3n mi\u1ec5n ph\u00ed c\u00f3 trang \u0111\u1ec7m qu\u1ea3ng c\u00e1o. \u0110\u1ec3 trang \u0111\u00edch c\u1ee7a b\u1ea1n kh\u00f4ng b\u1ecb ch\u00e8n trang \u0111\u1ec7m, h\u1ec7 th\u1ed1ng g\u1eafn th\u00eam m\u1ed9t ti\u1ec1n t\u1ed1 v\u00e0o b\u1ea3n ghi <code>CNAME<\/code>. H\u1ec7 qu\u1ea3 r\u1ea5t c\u1ee5 th\u1ec3: <strong>\u1edf \u00f4 nh\u1eadp t\u00ean mi\u1ec1n b\u00ean Webcake, b\u1ea1n ph\u1ea3i nh\u1eadp \u0111\u00fang t\u00ean c\u00f3 ti\u1ec1n t\u1ed1 \u0111\u00f3<\/strong>, kh\u00f4ng ph\u1ea3i t\u00ean mi\u1ec1n ph\u1ee5 g\u1ed1c.<\/p>\n<p>M\u00e0n h\u00ecnh c\u1ea5u h\u00ecnh in s\u1eb5n chu\u1ed7i ch\u00ednh x\u00e1c c\u1ea7n nh\u1eadp cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n \u2014 h\u00e3y ch\u00e9p nguy\u00ean chu\u1ed7i \u0111\u00f3. \u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n s\u1ed1 m\u1ed9t c\u1ee7a l\u1ed7i &#8220;x\u00e1c minh th\u1ea5t b\u1ea1i&#8221; trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y: b\u1ea3n ghi \u0111\u00e3 \u0111\u00fang, nh\u01b0ng ph\u00eda b\u00ean kia \u0111ang ch\u1edd m\u1ed9t t\u00ean kh\u00e1c. N\u00e2ng t\u00ean mi\u1ec1n l\u00ean ch\u1ebf \u0111\u1ed9 kh\u00f4ng qu\u1ea3ng c\u00e1o th\u00ec kh\u00f4ng c\u00f2n ti\u1ec1n t\u1ed1, v\u00e0 b\u1ea1n nh\u1eadp t\u00ean mi\u1ec1n nh\u01b0 b\u00ecnh th\u01b0\u1eddng.<\/p>\n<h2>X\u00e1c minh v\u00e0 ch\u1ee9ng ch\u1ec9: v\u00ec sao ph\u1ea3i ch\u1edd, v\u00e0 ch\u1edd bao l\u00e2u l\u00e0 b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>Sau khi b\u1ea3n ghi \u0111\u01b0\u1ee3c t\u1ea1o, n\u1ec1n t\u1ea3ng kia c\u1ea7n th\u1ea5y DNS \u0111\u00e3 ph\u00e2n gi\u1ea3i \u0111\u00fang th\u00ec m\u1edbi x\u00e1c minh \u0111\u01b0\u1ee3c, r\u1ed3i m\u1edbi xin ch\u1ee9ng ch\u1ec9 TLS \u0111\u01b0\u1ee3c. Hai th\u1ee9 quy\u1ebft \u0111\u1ecbnh b\u1ea1n ch\u1edd bao l\u00e2u:<\/p>\n<ul>\n<li><strong>TTL c\u1ee7a b\u1ea3n ghi c\u0169.<\/strong> N\u1ebfu tr\u01b0\u1edbc \u0111\u00f3 t\u00ean \u0111\u00f3 \u0111\u00e3 c\u00f3 b\u1ea3n ghi v\u1edbi TTL 3600, c\u00e1c m\u00e1y ch\u1ee7 DNS trung gian c\u00f2n nh\u1edb gi\u00e1 tr\u1ecb c\u0169 t\u1ed1i \u0111a m\u1ed9t ti\u1ebfng. B\u1ea3n ghi m\u1edbi ho\u00e0n to\u00e0n th\u00ec th\u01b0\u1eddng th\u1ea5y nhanh h\u01a1n nhi\u1ec1u.<\/li>\n<li><strong>H\u00e0ng \u0111\u1ee3i c\u1ea5p ch\u1ee9ng ch\u1ec9<\/strong> \u1edf ph\u00eda n\u1ec1n t\u1ea3ng.<\/li>\n<\/ul>\n<p>M\u1eb9o ngh\u1ec1: n\u1ebfu bi\u1ebft tr\u01b0\u1edbc s\u1ebd \u0111\u1ed5i, h\u00e3y h\u1ea1 TTL c\u1ee7a b\u1ea3n ghi hi\u1ec7n t\u1ea1i xu\u1ed1ng m\u1ee9c th\u1ea5p (v\u00ed d\u1ee5 300 gi\u00e2y) <em>tr\u01b0\u1edbc<\/em> ng\u00e0y \u0111\u1ed5i \u00edt nh\u1ea5t b\u1eb1ng \u0111\u00fang kho\u1ea3ng TTL c\u0169. L\u00e0m v\u1eady th\u00ec l\u00fac \u0111\u1ed5i th\u1eadt, thay \u0111\u1ed5i lan \u0111i trong v\u00e0i ph\u00fat, v\u00e0 n\u1ebfu ph\u1ea3i quay l\u1ea1i th\u00ec c\u0169ng quay l\u1ea1i trong v\u00e0i ph\u00fat.<\/p>\n<h2>T\u1ef1 ki\u1ec3m tra thay v\u00ec b\u1ea5m n\u00fat x\u00e1c minh li\u00ean t\u1ee5c<\/h2>\n<p>Tr\u01b0\u1edbc khi b\u1ea5m x\u00e1c minh l\u1ea7n th\u1ee9 m\u01b0\u1eddi, h\u00e3y t\u1ef1 h\u1ecfi m\u00e1y ch\u1ee7 DNS c\u00f4ng c\u1ed9ng xem b\u1ea3n ghi \u0111\u00e3 lan t\u1edbi ch\u01b0a. M\u1edf c\u1eeda s\u1ed5 d\u00f2ng l\u1ec7nh v\u00e0 ch\u1ea1y:<\/p>\n<pre>nslookup -type=CNAME lp.tenban.com 8.8.8.8\nnslookup -type=A lp.tenban.com 8.8.8.8<\/pre>\n<p>C\u00e1ch \u0111\u1ecdc k\u1ebft qu\u1ea3:<\/p>\n<ul>\n<li>Tr\u1ea3 v\u1ec1 \u0111\u00fang t\u00ean m\u00e1y ch\u1ee7 b\u00ean n\u1ec1n t\u1ea3ng cung c\u1ea5p \u2014 b\u01b0\u1edbc tr\u1ecf \u0111\u01b0\u1eddng \u0111\u00e3 xong, l\u1ed7i n\u1eb1m \u1edf b\u01b0\u1edbc x\u00e1c minh, h\u00e3y so\u00e1t l\u1ea1i chu\u1ed7i t\u00ean mi\u1ec1n b\u1ea1n nh\u1eadp b\u00ean \u0111\u00f3.<\/li>\n<li>Tr\u1ea3 v\u1ec1 gi\u00e1 tr\u1ecb c\u0169 \u2014 b\u1ea3n ghi ch\u01b0a lan h\u1ebft, h\u00e3y ch\u1edd h\u1ebft TTL c\u0169.<\/li>\n<li>Kh\u00f4ng tr\u1ea3 v\u1ec1 g\u00ec \u2014 b\u1ea3n ghi ch\u01b0a \u0111\u01b0\u1ee3c t\u1ea1o, ho\u1eb7c t\u1ea1o sai t\u00ean. Sai th\u01b0\u1eddng g\u1eb7p: nh\u1eadp c\u1ea3 t\u00ean mi\u1ec1n \u0111\u1ea7y \u0111\u1ee7 v\u00e0o \u00f4 t\u00ean trong khi h\u1ec7 th\u1ed1ng ch\u1ec9 c\u1ea7n ph\u1ea7n \u0111\u1ea7u.<\/li>\n<\/ul>\n<h3>B\u1ea3n ghi CAA c\u00f3 th\u1ec3 ch\u1eb7n ch\u1ee9ng ch\u1ec9<\/h3>\n<p>N\u1ebfu DNS \u0111\u00e3 \u0111\u00fang m\u00e0 ch\u1ee9ng ch\u1ec9 m\u00e3i kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p, h\u00e3y ki\u1ec3m tra b\u1ea3n ghi <code>CAA<\/code>. B\u1ea3n ghi n\u00e0y li\u1ec7t k\u00ea nh\u1eefng nh\u00e0 c\u1ea5p ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c ph\u00e9p k\u00fd cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n. \u0110\u00e3 \u0111\u1eb7t <code>CAA<\/code> m\u00e0 kh\u00f4ng c\u00f3 t\u00ean nh\u00e0 c\u1ea5p m\u00e0 n\u1ec1n t\u1ea3ng kia d\u00f9ng th\u00ec y\u00eau c\u1ea7u b\u1ecb t\u1eeb ch\u1ed1i m\u1ed9t c\u00e1ch ho\u00e0n to\u00e0n im l\u1eb7ng, \u1edf ph\u00eda nh\u00e0 c\u1ea5p ch\u1ee9ng ch\u1ec9. C\u00e1ch x\u1eed l\u00fd l\u00e0 b\u1ed5 sung nh\u00e0 c\u1ea5p \u0111\u00f3 v\u00e0o danh s\u00e1ch, ho\u1eb7c g\u1ee1 b\u1ea3n ghi <code>CAA<\/code> n\u1ebfu b\u1ea1n kh\u00f4ng th\u1eadt s\u1ef1 c\u1ea7n. N\u1ec1n t\u1ea3ng c\u1ee7a ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c n\u00f3i k\u1ef9 h\u01a1n trong b\u00e0i <a href=\"\/blog\/huong-dan-ssl-lets-encrypt\/\">H\u01b0\u1edbng d\u1eabn l\u1ea5y ch\u1ee9ng ch\u1ec9 SSL Let&#8217;s Encrypt<\/a>.<\/p>\n<h2>B\u1ea3ng tra l\u1ed7i nhanh<\/h2>\n<table>\n<thead>\n<tr>\n<th>Tri\u1ec7u ch\u1ee9ng<\/th>\n<th>Nguy\u00ean nh\u00e2n hay g\u1eb7p nh\u1ea5t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>X\u00e1c minh th\u1ea5t b\u1ea1i d\u00f9 b\u1ea3n ghi \u0111\u00e3 t\u1ea1o<\/td>\n<td>T\u00ean mi\u1ec1n nh\u1eadp b\u00ean n\u1ec1n t\u1ea3ng kh\u00e1c v\u1edbi t\u00ean th\u1eadt c\u1ee7a b\u1ea3n ghi (thi\u1ebfu ti\u1ec1n t\u1ed1, thi\u1ebfu ho\u1eb7c th\u1eeba <code>www<\/code>)<\/td>\n<\/tr>\n<tr>\n<td>Trang m\u1edf \u0111\u01b0\u1ee3c nh\u01b0ng b\u00e1o l\u1ed7i ch\u1ee9ng ch\u1ec9<\/td>\n<td>Ch\u1ee9ng ch\u1ec9 ch\u01b0a c\u1ea5p xong, ho\u1eb7c b\u1ea3n ghi <code>CAA<\/code> \u0111ang ch\u1eb7n<\/td>\n<\/tr>\n<tr>\n<td>Website ch\u1ea1y nh\u01b0ng email ng\u1eebng v\u00e0o<\/td>\n<td>\u0110\u00e3 \u0111\u1eb7t <code>CNAME<\/code> \u1edf g\u1ed1c, l\u00e0m m\u1ea5t b\u1ea3n ghi <code>MX<\/code><\/td>\n<\/tr>\n<tr>\n<td>M\u00e1y n\u00e0y v\u00e0o \u0111\u01b0\u1ee3c, m\u00e1y kia ch\u01b0a<\/td>\n<td>B\u1ea3n ghi ch\u01b0a lan h\u1ebft, c\u00f2n trong th\u1eddi gian TTL c\u0169<\/td>\n<\/tr>\n<tr>\n<td>V\u00e0o t\u00ean mi\u1ec1n l\u1ea1i ra trang c\u0169<\/td>\n<td>B\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t; th\u1eed c\u1eeda s\u1ed5 \u1ea9n danh ho\u1eb7c m\u1ea1ng kh\u00e1c tr\u01b0\u1edbc khi k\u1ebft lu\u1eadn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>T\u00f3m l\u1ea1i<\/h2>\n<p>G\u1eafn t\u00ean mi\u1ec1n v\u00e0o m\u1ed9t trang \u0111\u00edch d\u1ef1ng b\u1eb1ng c\u00f4ng c\u1ee5 ngo\u00e0i ch\u1ec9 c\u00f3 ba b\u01b0\u1edbc: tr\u1ecf \u0111\u01b0\u1eddng b\u1eb1ng DNS, \u0111\u1ec3 n\u1ec1n t\u1ea3ng x\u00e1c minh, r\u1ed3i ch\u1edd ch\u1ee9ng ch\u1ec9. Ch\u1ecdn <code>CNAME<\/code> khi \u0111\u01b0\u1ee3c \u0111\u01b0a t\u00ean m\u00e1y ch\u1ee7, tr\u00e1nh \u0111\u1eb7t \u1edf g\u1ed1c n\u1ebfu t\u00ean mi\u1ec1n c\u00f2n nh\u1eadn email, h\u1ea1 TTL tr\u01b0\u1edbc khi \u0111\u1ed5i, v\u00e0 t\u1ef1 tra b\u1eb1ng <code>nslookup<\/code> thay v\u00ec b\u1ea5m x\u00e1c minh li\u00ean t\u1ee5c.<\/p>\n<p>C\u1ea7n b\u1ea3n thao t\u00e1c t\u1eebng b\u01b0\u1edbc k\u00e8m m\u00e0n h\u00ecnh c\u1ee5 th\u1ec3 th\u00ec \u0111\u1ecdc <a href=\"https:\/\/ivi.vn\/docs#bai-4-huong-dan-tro-ten-mien-landing-page\">B\u00e0i 4: H\u01b0\u1edbng d\u1eabn tr\u1ecf t\u00ean mi\u1ec1n v\u1ec1 Landing Page Webcake<\/a>, ho\u1eb7c b\u1ea3n t\u1ed5ng qu\u00e1t h\u01a1n cho m\u1ecdi n\u1ec1n t\u1ea3ng \u1edf <a href=\"\/blog\/huong-dan-tro-ten-mien\/\">H\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch tr\u1ecf t\u00ean mi\u1ec1n v\u1ec1 Landing Page<\/a>. Ch\u01b0a c\u00f3 t\u00ean mi\u1ec1n th\u00ec tra v\u00e0 mua ngay t\u1ea1i <a href=\"https:\/\/ivi.vn\/search\">ivi.vn\/search<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ba b\u01b0\u1edbc th\u1eadt s\u1ef1 x\u1ea3y ra khi g\u1eafn t\u00ean mi\u1ec1n v\u00e0o c\u00f4ng c\u1ee5 d\u1ef1ng trang b\u00ean ngo\u00e0i: tr\u1ecf \u0111\u01b0\u1eddng, x\u00e1c minh, c\u1ea5p ch\u1ee9ng ch\u1ec9. K\u00e8m b\u1eaby CNAME \u1edf g\u1ed1c l\u00e0m ch\u1ebft email v\u00e0 b\u1ea3ng tra l\u1ed7i nhanh.<\/p>\n","protected":false},"author":1,"featured_media":64,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-12","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tich-hop-uu-dai"],"_links":{"self":[{"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/posts\/12","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/comments?post=12"}],"version-history":[{"count":1,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/posts\/12\/revisions"}],"predecessor-version":[{"id":76,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/posts\/12\/revisions\/76"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/media\/64"}],"wp:attachment":[{"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/media?parent=12"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/categories?post=12"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ivi.vn\/blog\/wp-json\/wp\/v2\/tags?post=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}