{"id":111,"date":"2022-07-27T07:07:44","date_gmt":"2022-07-27T07:07:44","guid":{"rendered":"https:\/\/weblearnbd.net\/wp\/arvilax\/?p=111"},"modified":"2022-12-02T09:35:59","modified_gmt":"2022-12-02T09:35:59","slug":"dns-la-gi-chuc-nang-phan-loai-va-cach-dung","status":"publish","type":"post","link":"https:\/\/demo.canhcam.com\/arvilax-home1\/dns-la-gi-chuc-nang-phan-loai-va-cach-dung\/","title":{"rendered":"DNS l\u00e0 g\u00ec? Ch\u1ee9c n\u0103ng, ph\u00e2n lo\u1ea1i v\u00e0 c\u00e1ch d\u00f9ng"},"content":{"rendered":"

D\u1ecbch v\u1ee5 \u0111\u1eb7t t\u00ean mi\u1ec1n (DNS) l\u00e0 th\u1ee9 m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y, m\u1eb7c d\u00f9 h\u1ea7u h\u1ebft ch\u00fang ta th\u1eadm ch\u00ed kh\u00f4ng nh\u1eadn ra \u0111i\u1ec1u \u0111\u00f3. Ngay c\u1ea3 m\u1ed9t s\u1ed1 chuy\u00ean gia c\u00f4ng ngh\u1ec7 th\u00f4ng tin d\u00e0y d\u1eb7n kinh nghi\u1ec7m c\u0169ng kh\u00f4ng bi\u1ebft th\u00f4ng tin chi ti\u1ebft c\u1ee7a DNS l\u00e0 g\u00ec? Ngay c\u1ea3 khi \u0111\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u00f4ng vi\u1ec7c c\u1ee7a h\u1ecd \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 ch\u1ea1y tr\u01a1n tru.\u00a0 \u0110\u1eebng lo l\u1eafng, C\u00e1nh Cam s\u1ebd \u0111\u1ed3ng h\u00e0nh c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u nh\u1eefng th\u00f4ng tin t\u1ed5ng h\u1ee3p v\u1ec1\u00a0DNS l\u00e0 g\u00ec?<\/strong>\u00a0v\u00e0 nh\u1eefng l\u1ee3i \u00edch quan tr\u1ecdng c\u1ee7a h\u1ec7 th\u1ed1ng n\u00e0y \u0111\u1ed1i v\u1edbi m\u1ea1ng Internet trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n

DNS l\u00e0 g\u00ec? DNS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb g\u00ec?<\/strong><\/h2>\n

DNS l\u00e0 g\u00ec?<\/strong>\u00a0DNS vi\u1ebft t\u1eaft c\u1ee7a Domain Name System, \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 h\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n. L\u00e0 h\u1ec7 th\u1ed1ng chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n trang web (t\u00ean m\u00e1y ch\u1ee7) th\u00e0nh c\u00e1c gi\u00e1 tr\u1ecb s\u1ed1 (\u0111\u1ecba ch\u1ec9 IP) \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y v\u00e0 t\u1ea3i v\u00e0o tr\u00ecnh duy\u1ec7t web c\u1ee7a b\u1ea1n.<\/p>\n

DNS l\u00e0 g\u00ec?<\/strong><\/figcaption><\/figure>\n

\u0110\u1ec3 d\u1ec5 hi\u1ec3u h\u01a1n\u00a0DNS server l\u00e0 g\u00ec<\/strong>\u00a0h\u00e3y c\u00f9ng C\u00e1nh cam nh\u00ecn l\u1ea1i khi Internet c\u00f2n s\u01a1 khai, vi\u1ec7c truy c\u1eadp m\u1ed9t trang web kh\u00f4ng d\u1ec5 d\u00e0ng v\u00ec b\u1ea1n ph\u1ea3i nh\u1eadp to\u00e0n b\u1ed9 \u0111\u1ecba ch\u1ec9 IP.\u00a0 V\u00ed d\u1ee5, \u0111\u1ec3 truy c\u1eadp Google, b\u1ea1n s\u1ebd ph\u1ea3i nh\u1eadp m\u1ed9t c\u00e1i g\u00ec \u0111\u00f3 nh\u01b0 8.8.8.8 trong tr\u00ecnh duy\u1ec7t ch\u1ee9 kh\u00f4ng ph\u1ea3i google.com nh\u01b0 b\u00e2y gi\u1edd. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng s\u1ebd kh\u00f3 kh\u0103n nh\u01b0 th\u1ebf n\u00e0o khi \u0111\u01b0\u1ee3c cung c\u1ea5p danh s\u00e1ch \u0111\u1ecba ch\u1ec9 IP kh\u1ed5ng l\u1ed3 m\u00e0 ch\u00fang ta ph\u1ea3i nh\u1edb.<\/p>\n

M\u00e1y ch\u1ee7 DNS<\/strong>\u00a0lo\u1ea1i b\u1ecf nhu c\u1ea7u con ng\u01b0\u1eddi ph\u1ea3i ghi nh\u1edb c\u00e1c \u0111\u1ecba ch\u1ec9 IP nh\u01b0 192.168.1.1 (trong IPv4) ho\u1eb7c c\u00e1c \u0111\u1ecba ch\u1ec9 IP g\u1ed3m ch\u1eef v\u00e0 s\u1ed1 ph\u1ee9c t\u1ea1p h\u01a1n nh\u01b0 2400: cb00: 2048: 1 :: c629: d7a2 (trong IPv6). M\u1ed7i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi Internet c\u00f3 m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t m\u00e0 c\u00e1c m\u00e1y kh\u00e1c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ecm thi\u1ebft b\u1ecb.<\/p>\n

Ch\u1ee9c n\u0103ng c\u1ee7a DNS Server?<\/strong><\/h2>\n

M\u00e1y ch\u1ee7 DNS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 c\u00e1c thi\u1ebft b\u1ecb ph\u00e2n t\u00e1n truy c\u1eadp v\u00e0o t\u00ean mi\u1ec1n v\u00e0 duy\u1ec7t internet. \u0110\u1ec3 theo d\u00f5i, c\u00e1c \u0111\u1ecba ch\u1ec9 IP n\u00e0y \u0111\u01b0\u1ee3c thu th\u1eadp trong c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u1eb1m tr\u00ean m\u1ed9t lo\u1ea1t m\u00e1y t\u00ednh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n (DNS).<\/p>\n

Khi m\u1ed9t ng\u01b0\u1eddi truy c\u1eadp m\u1ed9t trang web, tr\u00ecnh duy\u1ec7t s\u1ebd \u0111\u1ebfn th\u1eb3ng website m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i th\u00f4ng qua vi\u1ec7c nh\u1eadp \u0111\u1ecba ch\u1ec9 IP c\u1ee7a trang web. Qu\u00e1 tr\u00ecnh “d\u1ecbch” t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP \u0111\u1ec3 cho tr\u00ecnh duy\u1ec7t hi\u1ec3u v\u00e0 truy c\u1eadp \u0111\u01b0\u1ee3c v\u00e0o website l\u00e0 c\u00f4ng vi\u1ec7c c\u1ee7a m\u1ed9t DNS server.<\/p>\n

N\u1ebfu kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng DNS, Internet s\u1ebd kh\u00f3 truy c\u1eadp. S\u1ed1 l\u01b0\u1ee3ng tuy\u1ec7t \u0111\u1ed1i c\u00e1c trang web ch\u1ea1y trong kho\u1ea3ng 100 tri\u1ec7u. Theo k\u1ecbp \u0111\u1ecba ch\u1ec9 IP s\u1ebd g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 n\u1ebfu kh\u00f4ng c\u00f3 DNS. Th\u00eam v\u00e0o \u0111\u00f3, m\u1ed9t trong nh\u1eefng\u00a0t\u00e1c d\u1ee5ng c\u1ee7a DNS<\/strong>\u00a0l\u00e0 gi\u00fap ng\u01b0\u1eddi s\u1eed d\u1ee5ng ch\u1ec9 c\u1ea7n nh\u1edb “t\u00ean”, kh\u00f4ng c\u1ea7n ph\u1ea3i nh\u1edb \u0111\u1ecba ch\u1ec9 IP<\/p>\n

Ph\u00e2n lo\u1ea1i DNS Server<\/strong><\/h2>\n

Hi\u1ec7n nay, DNS Server c\u00f3 b\u1ed1n lo\u1ea1i ch\u00ednh: Root name server, DNS Recursor, TLD name servers v\u00e0 Authoritative nameservers<\/p>\n

    \n
  • Root Name Server<\/strong><\/li>\n<\/ul>\n

    \u0110\u00e2y l\u00e0 Server quan tr\u1ecdng nh\u1ea5t trong h\u1ec7 th\u1ed1ng c\u1ea5p b\u1eadc c\u1ee7a DNS. N\u00f3 l\u00e0 giao di\u1ec7n trung t\u00e2m gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 n\u1ed9i dung tr\u00ean internet \u0111\u1ec3 li\u00ean k\u1ebft mi\u1ec1n v\u00e0 \u0111\u1ecba ch\u1ec9 IP<\/p>\n

      \n
    • DNS Recursor<\/strong><\/li>\n<\/ul>\n

      DNS Recursor l\u00e0 \u0111i\u1ec3m d\u1eebng \u0111\u1ea7u ti\u00ean trong m\u1ed9t truy v\u1ea5n DNS. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ng\u01b0\u1eddi trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh DNS. Sau khi nh\u1eadn \u0111\u01b0\u1ee3c truy v\u1ea5n DNS t\u1eeb m\u00e1y kh\u00e1ch web, DNS Recursor s\u1ebd ph\u1ea3n h\u1ed3i v\u1edbi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache ho\u1eb7c g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn Root Name Server, sau \u0111\u00f3 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u kh\u00e1c t\u1edbi TLD nameservers v\u00e0 sau \u0111\u00f3 l\u00e0 y\u00eau c\u1ea7u cu\u1ed1i c\u00f9ng t\u1edbi Authoritative nameservers.<\/p>\n

      DNS Server c\u00f3 b\u1ed1n lo\u1ea1i ch\u00ednh<\/strong><\/figcaption><\/figure>\n
        \n
      • TLD nameservers<\/strong><\/li>\n<\/ul>\n

        TLD nameservers, vi\u1ebft t\u1eaft c\u1ee7a Top-level domain, duy tr\u00ec th\u00f4ng tin cho t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n chia s\u1ebb ph\u1ea7n m\u1edf r\u1ed9ng t\u00ean mi\u1ec1n chung, ch\u1eb3ng h\u1ea1n nh\u01b0 .com, .net ho\u1eb7c b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec xu\u1ea5t hi\u1ec7n sau d\u1ea5u ch\u1ea5m cu\u1ed1i c\u00f9ng trong url.<\/p>\n

        V\u00ed d\u1ee5: m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh .com TLD ch\u1ee9a th\u00f4ng tin cho m\u1ecdi trang web k\u1ebft th\u00fac b\u1eb1ng ‘.com’. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng \u0111ang t\u00ecm ki\u1ebfm google.com, sau khi nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i t\u1eeb m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh g\u1ed1c, DNS Resolver s\u1ebd g\u1eedi m\u1ed9t truy v\u1ea5n \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh .com TLD, truy v\u1ea5n n\u00e0y s\u1ebd ph\u1ea3n h\u1ed3i b\u1eb1ng c\u00e1ch tr\u1ecf \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh c\u00f3 th\u1ea9m quy\u1ec1n cho mi\u1ec1n \u0111\u00f3 .<\/p>\n

        Vi\u1ec7c qu\u1ea3n l\u00fd m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh TLD do C\u01a1 quan c\u1ea5p s\u1ed1 \u0111\u01b0\u1ee3c \u1ea5n \u0111\u1ecbnh tr\u00ean Internet (IANA), l\u00e0 m\u1ed9t nh\u00e1nh c\u1ee7a ICANN. IANA chia c\u00e1c m\u00e1y ch\u1ee7 TLD th\u00e0nh hai nh\u00f3m ch\u00ednh:<\/p>\n

        Mi\u1ec1n c\u1ea5p cao nh\u1ea5t chung: \u0110\u00e2y l\u00e0 nh\u1eefng mi\u1ec1n kh\u00f4ng d\u00e0nh ri\u00eang cho qu\u1ed1c gia, m\u1ed9t s\u1ed1 TLD chung \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nhi\u1ec1u nh\u1ea5t bao g\u1ed3m .com, .org, .net, .edu v\u00e0 .gov.<\/p>\n

        T\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t c\u1ee7a m\u00e3 qu\u1ed1c gia: Nh\u1eefng t\u00ean mi\u1ec1n n\u00e0y bao g\u1ed3m b\u1ea5t k\u1ef3 t\u00ean mi\u1ec1n n\u00e0o c\u1ee5 th\u1ec3 cho m\u1ed9t qu\u1ed1c gia ho\u1eb7c ti\u1ec3u bang. V\u00ed d\u1ee5 bao g\u1ed3m .uk, .us, .ru v\u00e0 .jp<\/p>\n

          \n
        • Authoritative nameservers<\/strong><\/li>\n<\/ul>\n

          Khi DNS Resolver nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i t\u1eeb TLD nameservers, ph\u1ea3n h\u1ed3i \u0111\u00f3 s\u1ebd h\u01b0\u1edbng tr\u00ecnh ph\u00e2n gi\u1ea3i \u0111\u1ebfn Authoritative nameservers. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 b\u01b0\u1edbc cu\u1ed1i c\u00f9ng c\u1ee7a tr\u00ecnh ph\u00e2n gi\u1ea3i trong h\u00e0nh tr\u00ecnh cho m\u1ed9t \u0111\u1ecba ch\u1ec9 IP.<\/p>\n

          C\u00e1c lo\u1ea1i b\u1ea3n ghi c\u1ee7a DNS<\/strong><\/h2>\n

          Hi\u1ec7n nay, c\u00f3 b\u1ea3y lo\u1ea1i b\u1ea3n ghi c\u1ee7a DNS, c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi \u0111\u00e2y<\/p>\n

          A Record<\/strong><\/h3>\n

          A Record, vi\u1ebft t\u1eaft c\u1ee7a Address, l\u00e0 lo\u1ea1i b\u1ea3n ghi DNS \u0111\u01a1n gi\u1ea3n nh\u1ea5t, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay, d\u00f9ng \u0111\u1ec3 d\u1eabn t\u00ean website t\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 IP c\u1ee5 th\u1ec3. Tuy nhi\u00ean, A Record ch\u1ec9 h\u1ed7 tr\u1ee3 \u0111\u1ecba ch\u1ec9 IPV4.<\/p>\n

          V\u00ed d\u1ee5: tra c\u1ee9u b\u1ea3n ghi DNS cho t\u00ean mi\u1ec1n example.com tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 sau:<\/p>\n

          \"Lo\u1ea1i
          Lo\u1ea1i b\u1ea3n ghi A record<\/figcaption><\/figure>\n

          Ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng \u0111\u1ecba ch\u1ec9 IP hi\u1ec7n t\u1ea1i l\u00e0 93.184.216.34.<\/p>\n

          C\u00f4ng d\u1ee5ng ch\u00ednh c\u1ee7a A Record l\u00e0 \u0111\u1ec3 tra c\u1ee9u \u0111\u1ecba ch\u1ec9 IP. S\u1eed d\u1ee5ng A Record, tr\u00ecnh duy\u1ec7t web c\u00f3 th\u1ec3 t\u1ea3i m\u1ed9t trang web b\u1eb1ng t\u00ean mi\u1ec1n. K\u1ebft qu\u1ea3 l\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c trang web tr\u00ean internet m\u00e0 kh\u00f4ng c\u1ea7n bi\u1ebft \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ch\u00fang.<\/p>\n

          Ngo\u00e0i, A Record \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1eb7n th\u01b0 t\u1eeb c\u00e1c ngu\u1ed3n th\u01b0 r\u00e1c \u0111\u00e3 bi\u1ebft.<\/p>\n

          DNS Record<\/strong><\/h3>\n

          \u0110\u00e2y l\u00e0 DNS Server Records c\u1ee7a t\u00ean mi\u1ec1n cho ph\u00e9p ch\u1ec9 \u0111\u1ecbnh Name Server cho t\u1eebng t\u00ean mi\u1ec1n ph\u1ee5. Ngo\u00e0i ra, c\u00f2n c\u00f3 th\u1ec3 t\u1ea1o host m\u1edbi, t\u00ean name server hay TTL.<\/p>\n

          CNAME Record<\/strong><\/h3>\n

          CNAME l\u00e0 b\u1ea3n ghi DNS \u0111\u00f3ng vai tr\u00f2 \u0111\u1eb7t m\u1ed9t ho\u1eb7c nhi\u1ec1u t\u00ean kh\u00e1c cho t\u00ean mi\u1ec1n ch\u00ednh.<\/p>\n

          M\u1ed9t v\u00ed d\u1ee5 cho vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c b\u1ea3n ghi CNAME l\u00e0 ch\u1ea1y nhi\u1ec1u t\u00ean mi\u1ec1n ph\u1ee5 cho c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau tr\u00ean c\u00f9ng m\u1ed9t m\u00e1y ch\u1ee7. V\u00ed d\u1ee5: ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ftp.example.com cho giao th\u1ee9c truy\u1ec1n t\u1ec7p (FTP) v\u00e0 cung c\u1ea5p c\u00e1c trang web qua www.example.com. Sau \u0111\u00f3, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea3n ghi CNAME \u0111\u1ec3 tr\u1ecf c\u1ea3 hai mi\u1ec1n ph\u1ee5 \u0111\u1ebfn example.com. Sau \u0111\u00f3, t\u00ean mi\u1ec1n ch\u00ednh example.com tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 b\u1eb1ng A Record.<\/p>\n

          \"C\u00e1c
          C\u00e1c lo\u1ea1i b\u1ea3n ghi c\u1ee7a DNS – CNAME Record<\/figcaption><\/figure>\n

          TXT Record<\/strong><\/h3>\n

          TXT Record cho ph\u00e9p nh\u1eadp v\u0103n b\u1ea3n v\u00e0o h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n DNS . TXT Record l\u00e0 n\u01a1i l\u01b0u tr\u1eef c\u00e1c ghi ch\u00fa m\u00e0 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c. Ngo\u00e0i ra, c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0a m\u1ed9t s\u1ed1 d\u1eef li\u1ec7u m\u00e0 m\u00e1y c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c v\u00e0o b\u1ea3n ghi TXT. M\u1ed9t mi\u1ec1n c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u TXT Record.<\/p>\n

          AAAA Record<\/strong><\/h3>\n

          AAAA Record, gi\u1ed1ng nh\u01b0 A Record, tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP cho m\u1ed9t mi\u1ec1n. Tuy nhi\u00ean, lo\u1ea1i b\u1ea3n ghi DNS n\u00e0y kh\u00e1c \u1edf ch\u1ed7 n\u00f3 tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IPV6. AAAA Record \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 giao th\u1ee9c IPV6 m\u1edbi h\u01a1n. IPV6 l\u00e0 m\u1ed9t b\u1ea3n n\u00e2ng c\u1ea5p so v\u1edbi IPV4 v\u00ec n\u00f3 cung c\u1ea5p nhi\u1ec1u \u0111\u1ecba ch\u1ec9 IP h\u01a1n. Do \u0111\u00f3, IPV6 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 h\u1ebft \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t. Vi\u1ec7c s\u1eed d\u1ee5ng AAAA Record \u0111\u1ec3 ph\u00e2n gi\u1ea3i DNS c\u00f3 ti\u1ec1m n\u0103ng l\u1edbn v\u00ec n\u00f3 s\u1eed d\u1ee5ng IPV6, m\u1ed9t c\u1ea3i ti\u1ebfn so v\u1edbi IPV4. Ngo\u00e0i ra, khi internet ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u00e0 ch\u00fang ta s\u1eafp h\u1ebft \u0111\u1ecba ch\u1ec9 IPV4, ti\u1ec1m n\u0103ng cho c\u00e1c AAAA Record l\u00e0 r\u1ea5t cao.<\/p>\n

          \"B\u1ea3n
          B\u1ea3n ghi lo\u1ea1i AAAA<\/figcaption><\/figure>\n

          SRV Record<\/strong><\/h3>\n

          SRV Record \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 b\u1ea3n ghi \u0111\u1eb7c bi\u1ec7t trong Domain Name System, c\u00f3 th\u1ec3 l\u01b0u tr\u1eef \u0111\u1ecba ch\u1ec9 IP v\u00e0 c\u1ed5ng (port) cho c\u00e1c d\u1ecbch v\u1ee5 c\u1ee5 th\u1ec3. H\u1ea7u h\u1ebft c\u00e1c DNS records kh\u00e1c ch\u1ec9 x\u00e1c \u0111\u1ecbnh m\u1ed9t m\u00e1y ch\u1ee7 ho\u1eb7c m\u1ed9t \u0111\u1ecba ch\u1ec9 IP , nh\u01b0ng c\u00e1c SRV Record c\u0169ng bao g\u1ed3m m\u1ed9t c\u1ed5ng t\u1ea1i \u0111\u1ecba ch\u1ec9 IP \u0111\u00f3. M\u1ed9t s\u1ed1 giao th\u1ee9c Internet y\u00eau c\u1ea7u s\u1eed d\u1ee5ng c\u00e1c b\u1ea3n ghi SRV \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

          MX Record<\/strong><\/h3>\n

          MX Record l\u00e0 m\u1ed9t lo\u1ea1i b\u1ea3n ghi DNS cho bi\u1ebft n\u01a1i c\u00e1c email cho m\u1ed9t mi\u1ec1n s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn. N\u00f3i c\u00e1ch kh\u00e1c, b\u1ea3n ghi MX gi\u00fap b\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n h\u01b0\u1edbng email \u0111\u1ebfn m\u00e1y ch\u1ee7.<\/p>\n

          \"MX
          MX Record – m\u1ed9t lo\u1ea1i b\u1ea3n ghi c\u1ee7a DNS<\/figcaption><\/figure>\n

          B\u1ea1n c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u MX Record cho m\u1ed9t t\u00ean mi\u1ec1n. V\u00e0 \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c m\u00e1y ch\u1ee7 email d\u1ef1 ph\u00f2ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

          D\u1ecbch v\u1ee5 \u0111\u1eb7t t\u00ean mi\u1ec1n (DNS) l\u00e0 th\u1ee9 m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y, m\u1eb7c d\u00f9 h\u1ea7u h\u1ebft ch\u00fang ta th\u1eadm ch\u00ed kh\u00f4ng nh\u1eadn ra \u0111i\u1ec1u \u0111\u00f3. Ngay c\u1ea3 m\u1ed9t s\u1ed1 chuy\u00ean gia c\u00f4ng ngh\u1ec7 th\u00f4ng tin d\u00e0y d\u1eb7n kinh nghi\u1ec7m c\u0169ng kh\u00f4ng bi\u1ebft th\u00f4ng tin chi ti\u1ebft c\u1ee7a DNS l\u00e0 g\u00ec? Ngay c\u1ea3 […]<\/p>\n","protected":false},"author":1,"featured_media":108,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[2,4,5,6],"tags":[9,10,11,17],"acf":[],"_links":{"self":[{"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/posts\/111"}],"collection":[{"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/comments?post=111"}],"version-history":[{"count":3,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/posts\/111\/revisions"}],"predecessor-version":[{"id":1888,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/posts\/111\/revisions\/1888"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/media\/108"}],"wp:attachment":[{"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/media?parent=111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/categories?post=111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo.canhcam.com\/arvilax-home1\/wp-json\/wp\/v2\/tags?post=111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}