{"id":477019,"date":"2023-08-09T09:06:26","date_gmt":"2023-08-09T09:06:26","guid":{"rendered":""},"modified":"2023-09-05T11:13:53","modified_gmt":"2023-09-05T11:13:53","slug":"dynamic-dns","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dynamic-dns\/","title":{"rendered":"Thu\u1ed1c n\u1ed5 DNS"},"content":{"rendered":"<p>DNS \u0111\u1ed9ng, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 DDNS ho\u1eb7c DynDNS, l\u00e0 d\u1ecbch v\u1ee5 cho ph\u00e9p t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n Internet (DNS) khi \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi n\u00f3 thay \u0111\u1ed5i. Th\u00f4ng th\u01b0\u1eddng, trong tr\u01b0\u1eddng h\u1ee3p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet (ISP) c\u1ea5p ph\u00e1t \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9ng, ng\u01b0\u1eddi d\u00f9ng mu\u1ed1n ch\u1ea1y c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng t\u1eeb nh\u00e0 ho\u1eb7c v\u0103n ph\u00f2ng c\u1ee7a h\u1ecd c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n v\u00ec \u0111\u1ecba ch\u1ec9 IP c\u00f3 th\u1ec3 thay \u0111\u1ed5i b\u1ea5t k\u1ef3 l\u00fac n\u00e0o. DNS \u0111\u1ed9ng gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, gi\u00fap duy tr\u00ec t\u00ean mi\u1ec1n nh\u1ea5t qu\u00e1n trong khi \u0111\u1ecba ch\u1ec9 IP thay \u0111\u1ed5i \u1edf ch\u1ebf \u0111\u1ed9 n\u1ec1n.<\/p>\n<h2>Quan \u0111i\u1ec3m l\u1ecbch s\u1eed v\u1ec1 DNS \u0111\u1ed9ng<\/h2>\n<p>DNS \u0111\u1ed9ng n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p cho c\u00e1c c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p nh\u1ecf v\u00e0o gi\u1eefa \u0111\u1ebfn cu\u1ed1i nh\u1eefng n\u0103m 1990, khi Internet ng\u00e0y c\u00e0ng tr\u1edf n\u00ean th\u01b0\u01a1ng m\u1ea1i v\u00e0 d\u1ec5 ti\u1ebfp c\u1eadn. M\u1eb7c d\u00f9 ng\u00e0y ch\u00ednh x\u00e1c c\u1ee7a l\u1ea7n tri\u1ec3n khai DDNS \u0111\u1ea7u ti\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c ghi ch\u00e9p r\u00f5 r\u00e0ng, nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng l\u00e0 do s\u1ef1 ph\u1ed5 bi\u1ebfn ng\u00e0y c\u00e0ng t\u0103ng c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9ng do ISP ch\u1ec9 \u0111\u1ecbnh, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c l\u01b0u tr\u1eef m\u00e1y ch\u1ee7 ho\u1eb7c d\u1ecbch v\u1ee5 t\u1eeb k\u1ebft n\u1ed1i t\u1ea1i nh\u00e0 c\u1ee7a h\u1ecd.<\/p>\n<p>C\u00e1c c\u00f4ng ty nh\u01b0 DynDNS v\u00e0 No-IP \u0111\u00e3 tr\u1edf th\u00e0nh nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS ph\u1ed5 bi\u1ebfn, cung c\u1ea5p c\u00e1c t\u00f9y ch\u1ecdn mi\u1ec5n ph\u00ed v\u00e0 tr\u1ea3 ph\u00ed cho ng\u01b0\u1eddi ti\u00eau d\u00f9ng c\u1ea7n t\u00ean m\u00e1y ch\u1ee7 \u1ed5n \u0111\u1ecbnh cho \u0111\u1ecba ch\u1ec9 IP \u0111\u1ed9ng c\u1ee7a h\u1ecd. M\u1eb7c d\u00f9 nhi\u1ec1u c\u00f4ng ty ban \u0111\u1ea7u n\u00e0y \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh m\u00f4 h\u00ecnh kinh doanh ho\u1eb7c ng\u1eebng ho\u1ea1t \u0111\u1ed9ng nh\u01b0ng kh\u00e1i ni\u1ec7m DNS \u0111\u1ed9ng v\u1eabn l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a ki\u1ebfn tr\u00fac internet.<\/p>\n<h2>T\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 DNS \u0111\u1ed9ng<\/h2>\n<p>DNS \u0111\u1ed9ng l\u00e0 c\u01a1 ch\u1ebf m\u00e0 ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 gi\u1eef cho t\u00ean mi\u1ec1n c\u1ee7a h\u1ecd tr\u1ecf \u0111\u1ebfn \u0111\u00fang \u0111\u1ecba ch\u1ec9 IP, ngay c\u1ea3 khi \u0111\u1ecba ch\u1ec9 \u0111\u00f3 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u0111\u1ed9ng v\u00e0 c\u00f3 th\u1ec3 thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean. N\u00f3 k\u1ebft h\u1ee3p DNS truy\u1ec1n th\u1ed1ng v\u1edbi kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS, th\u01b0\u1eddng s\u1eed d\u1ee5ng \u1ee9ng d\u1ee5ng kh\u00e1ch ph\u1ea7n m\u1ec1m gi\u00e1m s\u00e1t \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 v\u00e0 b\u00e1o c\u00e1o c\u00e1c thay \u0111\u1ed5i cho nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS.<\/p>\n<p>DDNS ho\u1ea1t \u0111\u1ed9ng theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c m\u00e1y kh\u00e1ch DDNS chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean m\u00e1y t\u00ednh s\u1ebd gi\u00e1m s\u00e1t \u0111\u1ecba ch\u1ec9 IP WAN.<\/li>\n<li>Khi ph\u00e1t hi\u1ec7n thay \u0111\u1ed5i, ph\u1ea7n m\u1ec1m m\u00e1y kh\u00e1ch s\u1ebd g\u1eedi y\u00eau c\u1ea7u c\u1eadp nh\u1eadt \u0111\u1ebfn nh\u00e0 cung c\u1ea5p DDNS.<\/li>\n<li>Nh\u00e0 cung c\u1ea5p DDNS c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS c\u00f3 li\u00ean quan trong m\u00e1y ch\u1ee7 DNS.<\/li>\n<li>Thay \u0111\u1ed5i lan truy\u1ec1n qua h\u1ec7 th\u1ed1ng DNS v\u00e0 mi\u1ec1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP m\u1edbi.<\/li>\n<\/ol>\n<h2>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a DNS \u0111\u1ed9ng<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a DNS \u0111\u1ed9ng ch\u1ee7 y\u1ebfu bao g\u1ed3m ba th\u00e0nh ph\u1ea7n: m\u00e1y ch\u1ee7 DNS, m\u00e1y kh\u00e1ch ho\u1eb7c tr\u00ecnh c\u1eadp nh\u1eadt DDNS v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS.<\/p>\n<ul>\n<li>M\u00e1y ch\u1ee7 DNS l\u01b0u gi\u1eef c\u00e1c b\u1ea3n ghi DNS v\u00e0 ph\u1ea3n h\u1ed3i c\u00e1c truy v\u1ea5n DNS b\u1eb1ng \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u1ed9t t\u00ean mi\u1ec1n nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li>M\u00e1y kh\u00e1ch ho\u1eb7c tr\u00ecnh c\u1eadp nh\u1eadt DDNS gi\u00e1m s\u00e1t \u0111\u1ecba ch\u1ec9 IP t\u1eeb ph\u00eda ng\u01b0\u1eddi d\u00f9ng. Khi ph\u00e1t hi\u1ec7n thay \u0111\u1ed5i, n\u00f3 s\u1ebd th\u00f4ng b\u00e1o cho nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS.<\/li>\n<li>Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS ch\u1ecbu tr\u00e1ch nhi\u1ec7m c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS tr\u00ean m\u00e1y ch\u1ee7 DNS.<\/li>\n<\/ul>\n<p>Trong h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft l\u1eadp DDNS, ng\u01b0\u1eddi d\u00f9ng c\u00e0i \u0111\u1eb7t m\u1ed9t \u1ee9ng d\u1ee5ng kh\u00e1ch ph\u1ea7n m\u1ec1m tr\u00ean m\u1ea1ng c\u1ee7a h\u1ecd \u0111\u1ec3 li\u00ean l\u1ea1c v\u1edbi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS. B\u1ea5t c\u1ee9 khi n\u00e0o \u0111\u1ecba ch\u1ec9 IP thay \u0111\u1ed5i, \u1ee9ng d\u1ee5ng kh\u00e1ch ph\u1ea7n m\u1ec1m n\u00e0y s\u1ebd g\u1eedi t\u00edn hi\u1ec7u \u0111\u1ebfn d\u1ecbch v\u1ee5 DDNS, sau \u0111\u00f3 d\u1ecbch v\u1ee5 n\u00e0y s\u1ebd c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a DNS \u0111\u1ed9ng<\/h2>\n<p>DNS \u0111\u1ed9ng cung c\u1ea5p m\u1ed9t s\u1ed1 l\u1ee3i \u00edch ch\u00ednh:<\/p>\n<ol>\n<li><strong>Cho ph\u00e9p l\u01b0u tr\u1eef m\u00e1y ch\u1ee7 v\u1edbi IP \u0111\u1ed9ng:<\/strong> Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 l\u01b0u tr\u1eef c\u00e1c m\u00e1y ch\u1ee7 (nh\u01b0 m\u00e1y ch\u1ee7 web, m\u00e1y ch\u1ee7 FTP, m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i, v.v.) t\u1eeb c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng c\u00f3 s\u1eb5n \u0111\u1ecba ch\u1ec9 IP t\u0129nh ho\u1eb7c gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng.<\/li>\n<li><strong>\u0110\u1ea3m b\u1ea3o t\u00ean mi\u1ec1n nh\u1ea5t qu\u00e1n:<\/strong> D\u00f9 thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP nh\u01b0ng t\u00ean mi\u1ec1n v\u1eabn \u0111\u01b0\u1ee3c gi\u1eef nguy\u00ean, \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy c\u1eadp d\u1ec5 d\u00e0ng.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 truy c\u1eadp t\u1eeb xa:<\/strong> DDNS gi\u00fap nh\u00e2n vi\u00ean ho\u1eb7c qu\u1ea3n tr\u1ecb vi\u00ean t\u1eeb xa truy c\u1eadp h\u1ec7 th\u1ed1ng v\u00e0 m\u1ea1ng d\u1ec5 d\u00e0ng h\u01a1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n d\u1ec5 nh\u1edb thay v\u00ec \u0111\u1ecba ch\u1ec9 IP d\u1ea1ng s\u1ed1 c\u00f3 kh\u1ea3 n\u0103ng thay \u0111\u1ed5i.<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i DNS \u0111\u1ed9ng<\/h2>\n<p>Hai lo\u1ea1i DNS \u0111\u1ed9ng ch\u00ednh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean ph\u01b0\u01a1ng ph\u00e1p c\u1eadp nh\u1eadt b\u1ea3n ghi DNS:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Ki\u1ec3u<\/strong><\/th>\n<th><strong>S\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>DDNS d\u1ef1a tr\u00ean k\u00e9o<\/strong><\/td>\n<td>M\u00e1y kh\u00e1ch l\u1ea5y \u0111\u1ecba ch\u1ec9 IP t\u1eeb m\u00e1y ch\u1ee7. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi m\u00e1y kh\u00e1ch \u1edf ph\u00eda sau NAT ho\u1eb7c t\u01b0\u1eddng l\u1eeda.<\/td>\n<\/tr>\n<tr>\n<td><strong>DDNS d\u1ef1a tr\u00ean \u0111\u1ea9y<\/strong><\/td>\n<td>M\u00e1y kh\u00e1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng s\u1ebd \u0111\u1ea9y \u0111\u1ecba ch\u1ec9 IP \u0111\u1ebfn m\u00e1y ch\u1ee7. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi m\u00e1y kh\u00e1ch c\u00f3 \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00e1c d\u1ecbch v\u1ee5 DDNS kh\u00e1c nhau c\u0169ng c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n c\u1ee7a ri\u00eang b\u1ea1n, c\u00e1c b\u1ea3n ghi b\u1ed5 sung nh\u01b0 MX (d\u00e0nh cho m\u00e1y ch\u1ee7 th\u01b0) ho\u1eb7c c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt nh\u01b0 SSL\/TLS cho qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt.<\/p>\n<h2>S\u1eed d\u1ee5ng DNS \u0111\u1ed9ng: C\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p ti\u1ec1m \u1ea9n<\/h2>\n<p>M\u1eb7c d\u00f9 DDNS mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch nh\u01b0ng n\u00f3 c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c:<\/p>\n<ul>\n<li>\n<p><strong>\u0110\u1ed9 tr\u1ec5 truy\u1ec1n DNS:<\/strong> C\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi b\u1ea3n ghi DNS kh\u00f4ng c\u00f3 hi\u1ec7u l\u1ef1c ngay l\u1eadp t\u1ee9c do t\u00ednh ch\u1ea5t ph\u00e2n t\u00e1n c\u1ee7a DNS. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m gi\u1ea3m c\u00e0i \u0111\u1eb7t th\u1eddi gian t\u1ed3n t\u1ea1i (TTL) c\u1ee7a b\u1ea3n ghi DNS v\u00e0 \u0111\u1ee3i cho \u0111\u1ebfn khi qu\u00e1 tr\u00ecnh truy\u1ec1n ho\u00e0n t\u1ea5t.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ed1i quan t\u00e2m v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 b\u1ea3o m\u1eadt:<\/strong> C\u00e1c th\u1ef1c th\u1ec3 \u0111\u1ed9c h\u1ea1i c\u00f3 th\u1ec3 c\u1ed1 g\u1eafng chi\u1ebfm \u0111o\u1ea1t c\u00e1c mi\u1ec1n DDNS. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean, th\u1ef1c h\u00e0nh m\u1eadt kh\u1ea9u m\u1ea1nh m\u1ebd v\u00e0 s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DDNS h\u1ed7 tr\u1ee3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u1eadp nh\u1eadt an to\u00e0n.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ed9 tin c\u1eady c\u1ee7a nh\u00e0 cung c\u1ea5p DDNS:<\/strong> N\u1ebfu m\u00e1y ch\u1ee7 c\u1ee7a nh\u00e0 cung c\u1ea5p DDNS ng\u1eebng ho\u1ea1t \u0111\u1ed9ng th\u00ec kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n c\u1eadp nh\u1eadt. V\u00ec v\u1eady, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ch\u1ecdn nh\u00e0 cung c\u1ea5p DDNS \u0111\u00e1ng tin c\u1eady.<\/p>\n<\/li>\n<\/ul>\n<h2>So s\u00e1nh DNS \u0111\u1ed9ng v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>DDNS th\u01b0\u1eddng \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi DNS v\u00e0 VPN t\u0129nh. \u0110\u00e2y l\u00e0 c\u00e1ch h\u1ecd x\u1ebfp ch\u1ed3ng l\u00ean nhau:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Di\u1ec7n m\u1ea1o<\/strong><\/th>\n<th><strong>Thu\u1ed1c n\u1ed5 DNS<\/strong><\/th>\n<th><strong>DNS t\u0129nh<\/strong><\/th>\n<th><strong>VPN<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP<\/strong><\/td>\n<td>X\u1eed l\u00fd c\u00e1c IP thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean<\/td>\n<td>T\u1ed1t nh\u1ea5t cho IP \u1ed5n \u0111\u1ecbnh, kh\u00f4ng thay \u0111\u1ed5i<\/td>\n<td>Kh\u00f4ng li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn DNS, thay v\u00e0o \u0111\u00f3 cung c\u1ea5p k\u1ebft n\u1ed1i an to\u00e0n<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u1ecb gi\u00e1<\/strong><\/td>\n<td>Nhi\u1ec1u l\u1ef1a ch\u1ecdn mi\u1ec5n ph\u00ed ho\u1eb7c chi ph\u00ed th\u1ea5p<\/td>\n<td>Th\u01b0\u1eddng ph\u1ea3i ch\u1ecbu ph\u00ed b\u1ed5 sung t\u1eeb ISP<\/td>\n<td>R\u1ea5t kh\u00e1c nhau, t\u1eeb d\u1ecbch v\u1ee5 mi\u1ec5n ph\u00ed \u0111\u1ebfn d\u1ecbch v\u1ee5 cao c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t<\/strong><\/td>\n<td>Y\u00eau c\u1ea7u m\u1ed9t s\u1ed1 thi\u1ebft l\u1eadp, nh\u01b0ng nh\u00ecn chung th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng<\/td>\n<td>\u0110\u01a1n gi\u1ea3n n\u1ebfu IP t\u0129nh \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi ISP<\/td>\n<td>Y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t v\u00e0 thi\u1ebft l\u1eadp, \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 kh\u00e1c nhau<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>L\u01b0u tr\u1eef m\u00e1y ch\u1ee7 t\u1ea1i nh\u00e0, truy c\u1eadp t\u1eeb xa<\/td>\n<td>Website doanh nghi\u1ec7p, d\u1ecbch v\u1ee5 web quy m\u00f4 l\u1edbn<\/td>\n<td>Truy c\u1eadp t\u1eeb xa an to\u00e0n, b\u1ecf qua c\u00e1c gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng t\u01b0\u01a1ng lai c\u1ee7a c\u00f4ng ngh\u1ec7 DNS \u0111\u1ed9ng<\/h2>\n<p>Khi internet ph\u00e1t tri\u1ec3n, c\u00e1c d\u1ecbch v\u1ee5 DNS \u0111\u1ed9ng c\u0169ng v\u1eady. Ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i nh\u1eefng ti\u1ebfn b\u1ed9 v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 t\u00ednh d\u1ec5 s\u1eed d\u1ee5ng c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi. V\u00ed d\u1ee5, s\u1ef1 gia t\u0103ng c\u1ee7a IPv6 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 DDNS, v\u00ec m\u1ed9t trong nh\u1eefng m\u1ee5c ti\u00eau c\u1ee7a IPv6 l\u00e0 gi\u1ea3m nhu c\u1ea7u v\u1ec1 IP \u0111\u1ed9ng.<\/p>\n<p>H\u01a1n n\u1eefa, khi c\u00e1c thi\u1ebft b\u1ecb IoT (Internet of Things) tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n, DDNS c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb n\u00e0y giao ti\u1ebfp hi\u1ec7u qu\u1ea3 qua internet, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng gia \u0111\u00ecnh ho\u1eb7c doanh nghi\u1ec7p nh\u1ecf, n\u01a1i th\u01b0\u1eddng kh\u00f4ng c\u00f3 \u0111\u1ecba ch\u1ec9 IP t\u0129nh.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 DNS \u0111\u1ed9ng: M\u1ed9t trang web \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi nhau<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong \u1ee9ng d\u1ee5ng DNS \u0111\u1ed9ng. M\u00e1y ch\u1ee7 proxy ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian cho c\u00e1c y\u00eau c\u1ea7u t\u1eeb kh\u00e1ch h\u00e0ng \u0111ang t\u00ecm ki\u1ebfm t\u00e0i nguy\u00ean t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c. Khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi DDNS, ch\u00fang c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p m\u1ea1nh m\u1ebd, linh ho\u1ea1t \u0111\u1ec3 qu\u1ea3n l\u00fd vi\u1ec7c thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP.<\/p>\n<p>V\u00ed d\u1ee5: ng\u01b0\u1eddi d\u00f9ng ch\u1ea1y d\u1ecbch v\u1ee5 web t\u1eeb k\u1ebft n\u1ed1i gia \u0111\u00ecnh c\u00f3 IP \u0111\u1ed9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng DDNS \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ean mi\u1ec1n lu\u00f4n tr\u1ecf \u0111\u1ebfn \u0111\u00fang IP. Sau \u0111\u00f3, h\u1ecd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ebfn, cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt v\u00e0 ki\u1ec3m so\u00e1t.<\/p>\n<p>OneProxy, v\u1edbi t\u01b0 c\u00e1ch l\u00e0 nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy, c\u00f3 th\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho c\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 v\u1eady, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng h\u01b0\u1edfng l\u1ee3i t\u1eeb t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a DNS \u0111\u1ed9ng, \u0111\u1ed3ng th\u1eddi t\u1eadn h\u01b0\u1edfng c\u00e1c l\u1ee3i \u00edch v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a m\u00e1y ch\u1ee7 proxy.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 DNS \u0111\u1ed9ng, h\u00e3y xem x\u00e9t c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/www.amazon.com\/DNS-BIND-5th-Cricket-Liu\/dp\/0596100574\" target=\"_new\" rel=\"noopener nofollow\">DNS v\u00e0 BIND, Phi\u00ean b\u1ea3n th\u1ee9 5 - Cricket Liu, Paul Albitz<\/a>: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 DNS, bao g\u1ed3m DNS \u0111\u1ed9ng.<\/li>\n<li><a href=\"https:\/\/www.noip.com\/support\/knowledgebase\/\" target=\"_new\" rel=\"noopener nofollow\">C\u01a1 s\u1edf ki\u1ebfn th\u1ee9c kh\u00f4ng c\u00f3 IP<\/a>: Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DDNS c\u00f3 n\u1ec1n t\u1ea3ng ki\u1ebfn th\u1ee9c s\u00e2u r\u1ed9ng.<\/li>\n<li><a href=\"https:\/\/help.dyn.com\/\" target=\"_new\" rel=\"noopener nofollow\">T\u00e0i li\u1ec7u d\u1ecbch v\u1ee5 DynDNS<\/a>: M\u1ed9t nh\u00e0 cung c\u1ea5p DDNS ph\u1ed5 bi\u1ebfn kh\u00e1c v\u1edbi c\u00e1c t\u00e0i nguy\u00ean h\u1eefu \u00edch.<\/li>\n<\/ol>\n<p>Hi\u1ec3u v\u00e0 tri\u1ec3n khai ch\u00ednh x\u00e1c DNS \u0111\u1ed9ng c\u00f3 th\u1ec3 mang l\u1ea1i l\u1ee3i \u00edch cho c\u1ea3 c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p. \u0110\u00f3 l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7, m\u1eb7c d\u00f9 h\u01a1i ch\u1eadm tr\u1ec5 nh\u01b0ng l\u1ea1i r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng internet li\u1ec1n m\u1ea1ch.<\/p>","protected":false},"featured_media":477020,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477019","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Dynamic DNS: The Key to Resolving Changing IP Addresses<\/mark>","faq_items":[{"question":"What is Dynamic DNS?","answer":"<p>Dynamic DNS (DDNS or DynDNS) is a service that automatically updates an Internet domain name server (DNS) when the IP address associated with it changes. This is particularly useful for users who want to run network services from their home or office but have a dynamic IP address that can change at any time.<\/p>"},{"question":"When did Dynamic DNS first emerge?","answer":"<p>Dynamic DNS emerged as a solution for individuals and small businesses in the mid to late 1990s. While the exact date of the first implementation of DDNS is not well documented, it was likely in response to the increasing prevalence of dynamic IP addresses assigned by ISPs.<\/p>"},{"question":"How does Dynamic DNS work?","answer":"<p>Dynamic DNS works by monitoring the IP address on the user's side and notifying the DDNS service provider whenever a change is detected. The DDNS service provider then updates the DNS records on the DNS server, which results in the user's domain pointing to the new IP address.<\/p>"},{"question":"What are the key features of Dynamic DNS?","answer":"<p>The key features of Dynamic DNS include allowing server hosting with dynamic IPs, ensuring consistent domain name despite changing IP addresses, and supporting remote access for workers or administrators using a memorable domain name instead of a potentially changing numeric IP address.<\/p>"},{"question":"What types of Dynamic DNS exist?","answer":"<p>There are two primary types of Dynamic DNS: Pull-based DDNS, where the client pulls the IP address from the server, typically used when the client is behind a NAT or a firewall; and Push-based DDNS, where the client or the user's router pushes the IP address to the server, typically used when the client has a public IP address.<\/p>"},{"question":"What are some potential issues and solutions when using Dynamic DNS?","answer":"<p>Some potential issues when using Dynamic DNS include DNS propagation delay, privacy and security concerns, and the reliability of DDNS providers. These can be mitigated by reducing the time-to-live (TTL) setting of DNS records, regular software updates, robust password practices, and choosing a reliable DDNS provider.<\/p>"},{"question":"What is the future perspective of Dynamic DNS technology?","answer":"<p>As the internet evolves, Dynamic DNS services are expected to advance in security and ease of use, as well as integrate with new technologies. With the rise of IPv6 and IoT devices, DDNS could play a crucial role in enabling effective communication over the internet.<\/p>"},{"question":"How can proxy servers be used with Dynamic DNS?","answer":"<p>Proxy servers can be used in combination with DDNS to provide robust, flexible solutions for managing changing IP addresses. For example, a user running a web service from a home connection with a dynamic IP could use DDNS to ensure the domain name always points to the correct IP and a proxy server to manage incoming connections, providing a level of security and control.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477019","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\/477019\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477020"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}