{"id":476887,"date":"2023-08-09T09:05:02","date_gmt":"2023-08-09T09:05:02","guid":{"rendered":""},"modified":"2023-09-05T11:13:37","modified_gmt":"2023-09-05T11:13:37","slug":"dns-cname-record","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-cname-record\/","title":{"rendered":"b\u1ea3n ghi t\u00ean DNS"},"content":{"rendered":"<p>B\u1ea3n ghi CNAME (T\u00ean chu\u1ea9n) c\u1ee7a H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS) l\u00e0 th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u00e1nh x\u1ea1 t\u00ean mi\u1ec1n n\u00e0y sang t\u00ean mi\u1ec1n kh\u00e1c. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u00ed danh cho mi\u1ec1n m\u1ee5c ti\u00eau, cho ph\u00e9p nhi\u1ec1u t\u00ean ph\u00e2n gi\u1ea3i th\u00e0nh c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IP. B\u1ea3n ghi CNAME \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c qu\u1ea3n l\u00fd DNS, \u0111\u1eb7c bi\u1ec7t khi x\u1eed l\u00fd c\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi t\u00ean m\u00e1y ch\u1ee7 trang web ho\u1eb7c \u0111\u1ecbnh c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a b\u1ea3n ghi DNS CNAME v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean nh\u1eafc t\u1edbi n\u00f3<\/h2>\n<p>H\u1ec7 th\u1ed1ng DNS \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1980 \u0111\u1ec3 thay th\u1ebf t\u1ec7p HOSTS.TXT \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ARPANET. \u0110\u1eb7c t\u1ea3 DNS ban \u0111\u1ea7u, \u0111\u01b0\u1ee3c ghi l\u1ea1i trong RFC 882 v\u00e0 RFC 883 n\u0103m 1983, kh\u00f4ng bao g\u1ed3m b\u1ea3n ghi CNAME. Tuy nhi\u00ean, kh\u00e1i ni\u1ec7m v\u1ec1 b\u00ed danh v\u00e0 nhu c\u1ea7u nhi\u1ec1u t\u00ean tr\u1ecf \u0111\u1ebfn c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 \u0111\u00e3 tr\u1edf n\u00ean r\u00f5 r\u00e0ng, d\u1eabn \u0111\u1ebfn s\u1ef1 ra \u0111\u1eddi c\u1ee7a b\u1ea3n ghi CNAME trong RFC 1034 v\u00e0 RFC 1035, xu\u1ea5t b\u1ea3n n\u0103m 1987.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 b\u1ea3n ghi DNS CNAME<\/h2>\n<p>B\u1ea3n ghi CNAME ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o b\u00ed danh ho\u1eb7c t\u00ean thay th\u1ebf cho t\u00ean m\u00e1y ch\u1ee7 hi\u1ec7n c\u00f3. Khi tr\u00ecnh ph\u00e2n gi\u1ea3i DNS g\u1eb7p b\u1ea3n ghi CNAME, n\u00f3 s\u1ebd thay th\u1ebf t\u00ean mi\u1ec1n hi\u1ec7n t\u1ea1i b\u1eb1ng t\u00ean chu\u1ea9n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong b\u1ea3n ghi CNAME v\u00e0 ti\u1ebfp t\u1ee5c ph\u00e2n gi\u1ea3i m\u1edbi. V\u00ed d\u1ee5: n\u1ebfu ch\u00fang t\u00f4i c\u00f3 b\u1ea3n ghi CNAME nh\u01b0:<\/p>\n<pre><div class=\"bg-black rounded-md mb-4\"><div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><span>kh\u00e1ch quan<\/span><button class=\"flex ml-auto gap-2\"><svg stroke=\"currentColor\" fill=\"none\" stroke-width=\"2\" viewbox=\"0 0 24 24\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"h-4 w-4\" height=\"1em\" width=\"1em\" ><path d=\"M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2\"><\/path><rect x=\"8\" y=\"2\" width=\"8\" height=\"4\" rx=\"1\" ry=\"1\"><\/rect><\/svg>Sao ch\u00e9p m\u00e3<\/button><\/div><div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-objectivec\" data-no-translation=\"\">www.example.com <span class=\"hljs-built_in\">CNAME<\/span> oneproxy.pro\n<\/code><\/div><\/div><\/pre>\n<p>M\u1ecdi y\u00eau c\u1ea7u v\u1ec1 \u201c<a href=\"http:\/\/www.example.com\" target=\"_new\" rel=\"noopener nofollow\">www.example.com<\/a>\u201d s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn \u201coneproxy.pro\u201d.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a b\u1ea3n ghi DNS CNAME v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n<p>B\u1ea3n ghi CNAME c\u00f3 c\u1ea5u tr\u00fac \u0111\u01a1n gi\u1ea3n bao g\u1ed3m hai th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu:<\/p>\n<ol>\n<li>\n<p><strong>T\u00ean b\u00ed danh:<\/strong> \u0110\u00e2y l\u00e0 mi\u1ec1n ho\u1eb7c mi\u1ec1n ph\u1ee5 m\u00e0 b\u1ea1n mu\u1ed1n t\u1ea1o b\u00ed danh, \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng t\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n (FQDN).<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ean chu\u1ea9n:<\/strong> \u0110\u00e2y l\u00e0 mi\u1ec1n m\u1ee5c ti\u00eau ho\u1eb7c mi\u1ec1n ph\u1ee5 m\u00e0 b\u00ed danh tr\u1ecf t\u1edbi, c\u0169ng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng t\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n (FQDN).<\/p>\n<\/li>\n<\/ol>\n<p>Khi tr\u00ecnh ph\u00e2n gi\u1ea3i DNS nh\u1eadn \u0111\u01b0\u1ee3c truy v\u1ea5n v\u1ec1 t\u00ean b\u00ed danh \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong b\u1ea3n ghi CNAME, n\u00f3 s\u1ebd tra c\u1ee9u t\u00ean chu\u1ea9n \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi b\u00ed danh \u0111\u00f3 v\u00e0 ti\u1ebfp t\u1ee5c qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS v\u1edbi t\u00ean m\u1edbi.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a b\u1ea3n ghi DNS CNAME<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a b\u1ea3n ghi DNS CNAME bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>T\u1ea1o b\u00ed danh:<\/strong> B\u1ea3n ghi CNAME cho ph\u00e9p t\u1ea1o b\u00ed danh \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n v\u00e0 mang l\u1ea1i s\u1ef1 linh ho\u1ea1t trong tr\u01b0\u1eddng h\u1ee3p thay \u0111\u1ed5i t\u00ean m\u00e1y ch\u1ee7 ho\u1eb7c khi s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ed9 ph\u00e2n gi\u1ea3i \u0111\u01a1n:<\/strong> Nhi\u1ec1u t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 IP th\u00f4ng qua b\u1ea3n ghi CNAME, gi\u1ea3m nhu c\u1ea7u v\u1ec1 b\u1ea3n ghi A (\u0110\u1ecba ch\u1ec9) tr\u00f9ng l\u1eb7p.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m so\u00e1t TTL:<\/strong> Th\u1eddi gian t\u1ed3n t\u1ea1i (TTL) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t cho c\u00e1c b\u1ea3n ghi CNAME, cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean ki\u1ec3m so\u00e1t th\u1eddi gian b\u1ed9 ph\u00e2n gi\u1ea3i DNS l\u01b0u tr\u1eef th\u00f4ng tin b\u1ea3n ghi.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i b\u1ea3n ghi DNS CNAME<\/h2>\n<table>\n<thead>\n<tr>\n<th>T\u00ean b\u00ed danh<\/th>\n<th>T\u00ean chu\u1ea9n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"http:\/\/www.example.com\" target=\"_new\" rel=\"noopener nofollow\">www.example.com<\/a><\/td>\n<td>oneproxy.pro<\/td>\n<\/tr>\n<tr>\n<td>ftp.example.com<\/td>\n<td>proxy.oneproxy.pro<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng b\u1ea3n ghi DNS CNAME, 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<h3>1. C\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 d\u1ef1 ph\u00f2ng:<\/h3>\n<p>B\u1ea3n ghi CNAME c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp tr\u00ean nhi\u1ec1u c\u1ee5m m\u00e1y ch\u1ee7, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh d\u1ef1 ph\u00f2ng. Tuy nhi\u00ean, m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn khi s\u1eed d\u1ee5ng b\u1ea3n ghi CNAME \u0111\u1ec3 c\u00e2n b\u1eb1ng t\u1ea3i l\u00e0 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS th\u01b0\u1eddng l\u01b0u tr\u1eef k\u1ebft qu\u1ea3 CNAME v\u00e0o b\u1ed9 \u0111\u1ec7m, d\u1eabn \u0111\u1ebfn ph\u00e2n ph\u1ed1i kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1eb7t gi\u00e1 tr\u1ecb TTL th\u1ea5p cho b\u1ea3n ghi CNAME nh\u01b0ng c\u00f3 th\u1ec3 l\u00e0m t\u0103ng l\u01b0u l\u01b0\u1ee3ng truy v\u1ea5n DNS.<\/p>\n<h3>2. Di chuy\u1ec3n trang web:<\/h3>\n<p>Khi di chuy\u1ec3n m\u1ed9t trang web sang m\u1ed9t t\u00ean mi\u1ec1n ho\u1eb7c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef m\u1edbi, b\u1ea3n ghi CNAME c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb t\u00ean mi\u1ec1n c\u0169 sang t\u00ean mi\u1ec1n m\u1edbi. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh hu\u1ed1ng trong \u0111\u00f3 c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm l\u1eadp ch\u1ec9 m\u1ee5c c\u1ea3 hai mi\u1ec1n, d\u1eabn \u0111\u1ebfn n\u1ed9i dung tr\u00f9ng l\u1eb7p. Vi\u1ec7c tri\u1ec3n khai chuy\u1ec3n h\u01b0\u1edbng 301 th\u00edch h\u1ee3p c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ea3n ghi CNAME<\/td>\n<td>\u00c1nh x\u1ea1 t\u00ean mi\u1ec1n n\u00e0y sang t\u00ean mi\u1ec1n kh\u00e1c, t\u1ea1o b\u00ed danh ho\u1eb7c t\u00ean thay th\u1ebf.<\/td>\n<\/tr>\n<tr>\n<td>M\u1ed9t b\u1ea3n ghi<\/td>\n<td>Ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IPv4.<\/td>\n<\/tr>\n<tr>\n<td>K\u1ef7 l\u1ee5c AAAA<\/td>\n<td>Ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IPv6.<\/td>\n<\/tr>\n<tr>\n<td>Tra c\u1ee9u DNS chuy\u1ec3n ti\u1ebfp<\/td>\n<td>Ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP.<\/td>\n<\/tr>\n<tr>\n<td>Tra c\u1ee9u DNS ng\u01b0\u1ee3c<\/td>\n<td>Ph\u00e2n gi\u1ea3i \u0111\u1ecba ch\u1ec9 IP th\u00e0nh t\u00ean mi\u1ec1n.<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n ghi MX<\/td>\n<td>Ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 th\u01b0 ch\u1ecbu tr\u00e1ch nhi\u1ec7m nh\u1eadn th\u01b0 email thay m\u1eb7t cho m\u1ed9t mi\u1ec1n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn b\u1ea3n ghi DNS CNAME<\/h2>\n<p>H\u1ec7 th\u1ed1ng DNS ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u1edbi nh\u1eefng ti\u1ebfn b\u1ed9 v\u1ec1 c\u00f4ng ngh\u1ec7 v\u00e0 b\u1ea3o m\u1eadt. Trong t\u01b0\u01a1ng lai, ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i:<\/p>\n<ul>\n<li>\n<p><strong>C\u1ea3i thi\u1ec7n t\u00ednh b\u1ea3o m\u1eadt:<\/strong> Giao th\u1ee9c DNS qua HTTPS (DoH) v\u00e0 DNS qua TLS (DoT) c\u00f3 th\u1ec3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n, t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean DNS.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00edch h\u1ee3p v\u1edbi Blockchain:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng DNS c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p v\u1edbi c\u00f4ng ngh\u1ec7 blockchain \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt, ph\u00e2n quy\u1ec1n v\u00e0 ch\u1ed1ng ki\u1ec3m duy\u1ec7t.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi b\u1ea3n ghi DNS CNAME<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy, nh\u01b0 OneProxy, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi b\u1ea3n ghi DNS CNAME \u0111\u1ec3 cung c\u1ea5p quy\u1ec1n truy c\u1eadp gi\u00e1n ti\u1ebfp v\u00e0o t\u00e0i nguy\u00ean ho\u1eb7c d\u1ecbch v\u1ee5. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho:<\/p>\n<ul>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> B\u1ea3n ghi CNAME c\u00f3 th\u1ec3 g\u1eedi y\u00eau c\u1ea7u tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 proxy kh\u00e1c nhau d\u1ef1a tr\u00ean t\u00ednh kh\u1ea3 d\u1ee5ng ho\u1eb7c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd, ph\u00e2n ph\u1ed1i t\u1ea3i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>C\u01a1 ch\u1ebf chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng:<\/strong> B\u1ea3n ghi CNAME c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng t\u1ef1 \u0111\u1ed9ng sang m\u00e1y ch\u1ee7 proxy d\u1ef1 ph\u00f2ng trong tr\u01b0\u1eddng h\u1ee3p m\u00e1y ch\u1ee7 ch\u00ednh kh\u00f4ng kh\u1ea3 d\u1ee5ng.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ecbnh tuy\u1ebfn t\u00ean mi\u1ec1n ph\u1ee5:<\/strong> Nh\u00e0 cung c\u1ea5p proxy c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea3n ghi CNAME \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn c\u00e1c t\u00ean mi\u1ec1n ph\u1ee5 c\u1ee5 th\u1ec3 \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 proxy kh\u00e1c nhau, cho ph\u00e9p ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp c\u00f3 m\u1ee5c ti\u00eau.<\/p>\n<\/li>\n<\/ul>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1034\" target=\"_new\" rel=\"noopener nofollow\">RFC 1034 \u2013 T\u00ean mi\u1ec1n \u2013 Kh\u00e1i ni\u1ec7m v\u00e0 ti\u1ec7n \u00edch<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1035\" target=\"_new\" rel=\"noopener nofollow\">RFC 1035 \u2013 T\u00ean mi\u1ec1n \u2013 Tri\u1ec3n khai v\u00e0 \u0111\u1eb7c t\u1ea3<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Domain_Name_System\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1edbi thi\u1ec7u v\u1ec1 DNS \u2013 Wikipedia<\/a><\/li>\n<li><a href=\"https:\/\/computer.howstuffworks.com\/dns.htm\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1ea3i th\u00edch v\u1ec1 DNS \u2013 HowStuffWorks<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476888,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476887","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>DNS CNAME Record for the Website of the Proxy Server Provider OneProxy (oneproxy.pro)<\/mark>","faq_items":[{"question":"What is a DNS CNAME record and how does it work?","answer":"<p>A DNS CNAME record, also known as a Canonical Name record, is used to create an alias for a domain or subdomain, allowing it to resolve to another domain name. When a DNS resolver encounters a CNAME record, it replaces the alias with the canonical name specified in the record and continues the DNS resolution process with the new name.<\/p>"},{"question":"How does a DNS CNAME record differ from an A record?","answer":"<p>The DNS CNAME record maps one domain name to another, providing an alias or alternative name. On the other hand, an A record resolves a domain name to an IPv4 address directly. While CNAME records allow for flexibility and easy hostname changes, A records are essential for direct IP address resolution.<\/p>"},{"question":"What types of DNS CNAME records exist?","answer":"<p>DNS CNAME records can be employed for load balancing by distributing traffic across multiple server clusters. However, caching of CNAME results can cause uneven distribution. To manage this, a low Time-to-Live (TTL) value can be set to reduce caching duration, though it may increase DNS query traffic.<\/p>"},{"question":"How can DNS CNAME records be utilized for load balancing?","answer":"<p>Yes, CNAME records are useful during website migration to direct traffic from the old domain to the new one. However, caution must be exercised to avoid duplicate content issues with search engines. Implementing proper 301 redirects can address this concern effectively.<\/p>"},{"question":"Can DNS CNAME records be used during website migration?","answer":"<p>Proxy servers can leverage DNS CNAME records to facilitate load balancing, failover mechanisms, and targeted subdomain routing. By directing requests to different proxy servers based on availability or geographic locations, CNAME records enhance the efficiency and reliability of proxy server access.<\/p>"},{"question":"How can proxy servers like OneProxy benefit from DNS CNAME records?","answer":"<p>The future of DNS CNAME records may involve improvements in security with protocols like DNS over HTTPS (DoH) and DNS over TLS (DoT). Additionally, the integration of DNS with blockchain technology might enhance security, decentralization, and resistance to censorship.<\/p>"},{"question":"What are the future perspectives and technologies related to DNS CNAME records?","answer":""}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476887","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\/476887\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476888"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}