{"id":12886,"date":"2022-06-12T11:47:40","date_gmt":"2022-06-12T04:47:40","guid":{"rendered":"https:\/\/hostify.vn\/blog\/?p=12886"},"modified":"2022-06-12T11:47:40","modified_gmt":"2022-06-12T04:47:40","slug":"cach-dung-google-public-dns-tot-nhat","status":"publish","type":"post","link":"https:\/\/www.hostify.vn\/blog\/cach-dung-google-public-dns-tot-nhat\/","title":{"rendered":"3 c\u00e1ch d\u00f9ng Google Public DNS t\u1ed1t nh\u1ea5t"},"content":{"rendered":"

Google Public DNS l\u00e0 g\u00ec? Khi n\u00e0o b\u1ea1n c\u1ea7n \u0111\u1ebfn n\u00f3? C\u00e1ch d\u00f9ng n\u00f3 tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n? Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, Hostify.vn s\u1ebd cung c\u1ea5p cho b\u1ea1n nh\u1eefng th\u00f4ng tin c\u01a1 b\u1ea3n v\u1ec1 Google Public DNS.<\/p>\n

\"3<\/p>\n

Google Public DNS l\u00e0 g\u00ec?<\/h3>\n

Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet m\u00e0 b\u1ea1n \u0111ang s\u1eed d\u1ee5ng c\u00f3 l\u1ebd kh\u00f4ng s\u1edf h\u1eefu m\u00e1y ch\u1ee7 DNS t\u1ed1c \u0111\u1ed9 cao v\u00e0 b\u1ea3o m\u1eadt, khi\u1ebfn t\u1ed1c \u0111\u1ed9 duy\u1ec7t web n\u00f3i chung c\u1ee7a b\u1ea1n b\u1ecb gi\u1ea3m \u0111i kh\u00e1 nhi\u1ec1u. Do \u0111\u00f3, khi g\u1eb7p v\u1ea5n \u0111\u1ec1 li\u00ean quan hi\u1ec7u su\u1ea5t k\u1ebft n\u1ed1i internet, c\u00e1c chuy\u00ean gia khuy\u00ean r\u1eb1ng n\u00ean thay \u0111\u1ed5i c\u1ea5u h\u00ecnh DNS m\u1eb7c \u0111\u1ecbnh sang m\u1ed9t m\u00e1y ch\u1ee7 DNS b\u00ean th\u1ee9 ba \u0111\u1ec3 gi\u1ea3i quy\u1ebft d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n

Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, Google Public DNS c\u00f3 l\u1ebd l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t d\u00e0nh cho b\u1ea1n, b\u1edfi ngo\u00e0i vi\u1ec7c c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 k\u1ebft n\u1ed1i, n\u00f3 c\u00f2n h\u1eefu \u00edch trong vi\u1ec7c t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt c\u0169ng nh\u01b0 cho ph\u00e9p s\u1eed d\u1ee5ng c\u00e1c \u1ee9ng d\u1ee5ng Google (nh\u01b0 Google Search, Google Docs, YouTube\u2026) m\u1ed9t c\u00e1ch tho\u1ea3i m\u00e1i h\u01a1n.<\/p>\n

Google Public DNS l\u00e0 d\u1ecbch v\u1ee5 DNS c\u00f4ng khai c\u1ee7a Google. DNS (Domain Name System) l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c \u0111\u1ecba ch\u1ec9 IP s\u1ed1 v\u00e0 c\u00e1c t\u00ean mi\u1ec1n d\u1ec5 \u0111\u1ecdc m\u00e0 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 hi\u1ec3u.<\/p>\n

M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a Google Public DNS l\u00e0 cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p nhanh ch\u00f3ng, \u1ed5n \u0111\u1ecbnh v\u00e0 ri\u00eang t\u01b0 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c y\u00eau c\u1ea7u DNS t\u1eeb ng\u01b0\u1eddi d\u00f9ng tr\u00ean to\u00e0n c\u1ea7u. Thay v\u00ec s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 DNS c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) hay nh\u1eefng m\u00e1y ch\u1ee7 DNS m\u1eb7c \u0111\u1ecbnh kh\u00e1c, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS c\u1ee7a m\u00ecnh \u0111\u1ec3 s\u1eed d\u1ee5ng Google Public DNS.<\/p>\n

\u01afu \u0111i\u1ec3m c\u1ee7a Google Public DNS<\/h3>\n

Google Public DNS s\u1edf h\u1eefu nhi\u1ec1u \u0111\u1eb7c t\u00ednh \u01b0u vi\u1ec7t so v\u1edbi DNS c\u1ee7a ISP v\u00e0 m\u1ed9t s\u1ed1 m\u00e1y ch\u1ee7 DNS m\u1eb7c \u0111\u1ecbnh kh\u00e1c, bao g\u1ed3m:<\/p>\n

– T\u1ed1c \u0111\u1ed9 cao: <\/strong>Google Public DNS \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 cung c\u1ea5p t\u1ed1c \u0111\u1ed9 nhanh trong vi\u1ec7c gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 truy c\u1eadp web v\u00e0 gi\u1ea3m th\u1eddi gian ch\u1edd \u0111\u1ee3i khi truy c\u1eadp c\u00e1c trang web.<\/p>\n

– \u1ed4n \u0111\u1ecbnh:<\/strong> Google v\u1eadn h\u00e0nh m\u1ed9t h\u1ea1 t\u1ea7ng m\u1ea1ng m\u1ea1nh m\u1ebd v\u00e0 ph\u00e2n t\u00e1n, gi\u00fap \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i cao.<\/p>\n

– B\u1ea3o m\u1eadt v\u00e0 ri\u00eang t\u01b0:<\/strong> Google Public DNS th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt \u0111\u1ec3 b\u1ea3o m\u1eadt v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro li\u00ean quan \u0111\u1ebfn vi\u1ec7c truy v\u1ea5n DNS. Google c\u0169ng h\u1ea1n ch\u1ebf l\u01b0u tr\u1eef th\u00f4ng tin c\u00e1 nh\u00e2n v\u00e0 ch\u1ec9 ghi l\u1ea1i d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n

– D\u1ec5 s\u1eed d\u1ee5ng:<\/strong> Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS c\u1ee7a m\u00ecnh \u0111\u1ec3 s\u1eed d\u1ee5ng Google Public DNS, kh\u00f4ng c\u1ea7n ph\u1ea3i t\u1ea3i v\u1ec1 ho\u1eb7c c\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m b\u1ed5 sung.<\/p>\n

C\u00e1ch d\u00f9ng Google Public DNS<\/h3>\n

Tr\u00ean Windows<\/h4>\n

B\u01b0\u1edbc 1: b\u1ea5m t\u1ed5 h\u1ee3p ph\u00edm Win + I<\/strong> \u0111\u1ec3 m\u1edf Windows Settings<\/strong><\/p>\n

B\u01b0\u1edbc 2: v\u00e0o Network & Internet > Status > Network and Sharing Center > Change adapter settings.<\/strong><\/p>\n

B\u01b0\u1edbc 3: b\u1ea5m chu\u1ed9t ph\u1ea3i v\u00e0o k\u1ebft n\u1ed1i m\u00e0 b\u1ea1n mu\u1ed1n c\u1ea5u h\u00ecnh Google Public DNS v\u00e0 ch\u1ecdn Properties<\/strong> trong menu x\u1ed5 xu\u1ed1ng<\/p>\n

B\u01b0\u1edbc 4: trong tab Networking, <\/strong>b\u1ea5m Internet Protocol Version 4 (TCP\/IPv4) <\/strong>ho\u1eb7c Internet Protocol Version 6 (TCP\/IPv6)<\/strong> r\u1ed3i b\u1ea5m Properties<\/strong><\/p>\n

B\u01b0\u1edbc 5: ch\u1ecdn Use the following DNS server addresses<\/strong> v\u00e0 l\u01b0u l\u1ea1i th\u00f4ng tin DNS \u0111ang s\u1eed d\u1ee5ng ph\u00f2ng tr\u01b0\u1eddng h\u1ee3p c\u1ea7n \u0111\u1ebfn sau n\u00e0y. B\u00e2y gi\u1edd, thay th\u1ebf c\u00e1c \u0111\u1ecba ch\u1ec9 IP hi\u1ec7n c\u00f3 b\u1eb1ng n\u1ed9i dung nh\u01b0 trong h\u00ecnh b\u00ean d\u01b0\u1edbi:<\/p>\n

\"3<\/p>\n

V\u1edbi IPv4:<\/p>\n

– Preferred DNS server: 8.8.8.8<\/p>\n

– Alternate DNS server: 8.8.4.4<\/p>\n

V\u1edbi IPv6<\/p>\n

– Preferred DNS server: 2001:4860:4860::8888<\/p>\n

– Alternate DNS server: 2001:4860:4860::8844<\/p>\n

B\u01b0\u1edbc 6: b\u1ea5m OK.<\/strong><\/p>\n

Tr\u00ean Mac<\/h4>\n

B\u01b0\u1edbc 1: b\u1ea5m v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng Apple <\/strong>\u1edf g\u00f3c tr\u00ean b\u00ean tr\u00e1i m\u00e0n h\u00ecnh v\u00e0 ch\u1ecdn System Preferences<\/strong> trong menu ng\u1eef c\u1ea3nh<\/p>\n

B\u01b0\u1edbc 2: v\u00e0o Network<\/strong> v\u00e0 ch\u1ecdn c\u00e1c k\u1ebft n\u1ed1i m\u00e0 b\u1ea1n mu\u1ed1n c\u1ea5u h\u00ecnh Google Public DNS<\/strong><\/p>\n

B\u01b0\u1edbc 3: trong menu Advanced<\/strong>, b\u1ea5m DNS<\/strong> v\u00e0 b\u1ea1n s\u1ebd th\u1ea5y c\u00e1c \u0111\u1ecba ch\u1ec9 DNS m\u1eb7c \u0111\u1ecbnh<\/p>\n

B\u01b0\u1edbc 4: trong khung b\u00ean tr\u00e1i, b\u1ea5m bi\u1ec3u t\u01b0\u1ee3ng +<\/strong> b\u00ean c\u1ea1nh c\u00e1c \u0111\u1ecba ch\u1ec9 IPv4 ho\u1eb7c IPv6 \u0111\u1ec3 th\u00eam Google Public DNS. Ti\u1ebfp theo g\u00f5 v\u00e0o c\u00e1c \u0111\u1ecba ch\u1ec9 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n

\"3<\/p>\n

V\u1edbi IPv4:<\/p>\n

– Preferred DNS server: 8.8.8.8<\/p>\n

– Alternate DNS server: 8.8.4.4<\/p>\n

V\u1edbi IPv6<\/p>\n

– Preferred DNS server: 2001:4860:4860::8888<\/p>\n

– Alternate DNS server: 2001:4860:4860::8844<\/p>\n

B\u01b0\u1edbc 5: b\u1ea5m OK > Apple<\/strong> \u0111\u1ec3 l\u01b0u thay \u0111\u1ed5i.<\/p>\n

Tr\u00ean Linux<\/h4>\n

\u0110\u1ec3 c\u1ea5u h\u00ecnh Google Public DNS tr\u00ean h\u1ec7 th\u1ed1ng Linux, b\u1ea1n c\u1ea7n ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh DNS c\u1ee7a m\u00e1y. H\u00e3y l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

B\u01b0\u1edbc 1: m\u1edf t\u1ec7p c\u1ea5u h\u00ecnh DNS. T\u00f9y thu\u1ed9c v\u00e0o h\u1ec7 th\u1ed1ng Linux b\u1ea1n \u0111ang s\u1eed d\u1ee5ng, t\u1ec7p c\u1ea5u h\u00ecnh DNS c\u00f3 th\u1ec3 n\u1eb1m trong c\u00e1c \u0111\u01b0\u1eddng d\u1eabn kh\u00e1c nhau. H\u00e3y s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o \u0111\u1ec3 m\u1edf t\u1ec7p c\u1ea5u h\u00ecnh DNS.<\/p>\n

– \u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng NetworkManager: sudo nano \/etc\/NetworkManager\/system-connections\/your_connection_name<\/strong><\/p>\n

Thay your_connection_name<\/strong> b\u1eb1ng t\u00ean k\u1ebft n\u1ed1i m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n

– \u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng kh\u00f4ng s\u1eed d\u1ee5ng NetworkManager: sudo nano \/etc\/resolv.conf<\/strong><\/p>\n

B\u01b0\u1edbc 2: Thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 DNS. Th\u00eam ho\u1eb7c s\u1eeda c\u00e1c d\u00f2ng nameserver<\/strong> \u0111\u1ec3 thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 DNS. Th\u00eam c\u00e1c \u0111\u1ecba ch\u1ec9 sau \u0111\u1ec3 s\u1eed d\u1ee5ng Google Public DNS:<\/p>\n

nameserver 8.8.8.8<\/strong><\/p>\n

nameserver 8.8.4.4<\/strong><\/p>\n

\"3<\/strong><\/p>\n

B\u01b0\u1edbc 3: L\u01b0u v\u00e0 tho\u00e1t. Sau khi thay \u0111\u1ed5i, l\u01b0u t\u1ec7p v\u00e0 tho\u00e1t kh\u1ecfi tr\u00ecnh so\u1ea1n th\u1ea3o.<\/p>\n

B\u01b0\u1edbc 4: Kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 NetworkManager (n\u1ebfu c\u1ea7n). N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng NetworkManager, b\u1ea1n c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 n\u00e0y \u0111\u1ec3 \u00e1p d\u1ee5ng c\u00e1c thay \u0111\u1ed5i: sudo systemctl restart NetworkManager<\/strong><\/p>\n

B\u01b0\u1edbc 5: Ki\u1ec3m tra c\u1ea5u h\u00ecnh. B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra xem c\u1ea5u h\u00ecnh DNS \u0111\u00e3 thay \u0111\u1ed5i ch\u01b0a b\u1eb1ng c\u00e1ch ch\u1ea1y l\u1ec7nh sau: cat \/etc\/resolv.conf<\/strong><\/p>\n

L\u01b0u \u00fd r\u1eb1ng t\u00f9y thu\u1ed9c v\u00e0o phi\u00ean b\u1ea3n v\u00e0 h\u1ec7 th\u1ed1ng Linux b\u1ea1n s\u1eed d\u1ee5ng, c\u00f3 th\u1ec3 c\u00f3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u1ea5u h\u00ecnh kh\u00e1c nhau. H\u00e3y ki\u1ec3m tra t\u00e0i li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ea1n \u0111\u1ec3 bi\u1ebft c\u00e1ch c\u1ea5u h\u00ecnh DNS ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n

T\u00ean mi\u1ec1n .VN ch\u1ec9 t\u1eeb 20K | T\u00ean mi\u1ec1n qu\u1ed1c t\u1ebf ch\u1ec9 t\u1eeb 25K<\/cite><\/strong><\/span><\/p>\n
\u01afu \u0111\u00e3i C\u1ef0C KH\u1ee6NG khi \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n t\u1ea1i Tenten.vn:<\/p>\n