{"id":12785,"date":"2022-06-09T14:17:15","date_gmt":"2022-06-09T07:17:15","guid":{"rendered":"https:\/\/hostify.vn\/blog\/?p=12785"},"modified":"2022-06-09T14:17:15","modified_gmt":"2022-06-09T07:17:15","slug":"huong-dan-cach-bat-dns-rieng-tu-moi-nhat-hien-nay","status":"publish","type":"post","link":"https:\/\/www.hostify.vn\/blog\/huong-dan-cach-bat-dns-rieng-tu-moi-nhat-hien-nay\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn 4 c\u00e1ch b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n"},"content":{"rendered":"

\"H\u01b0\u1edbng<\/strong><\/p>\n

N\u1ebfu b\u1ea1n quan t\u00e2m \u0111\u1ebfn quy\u1ec1n ri\u00eang t\u01b0 tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea3n th\u00e2n, th\u00ec DNS ri\u00eang t\u01b0 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu. N\u00f3 cho ph\u00e9p b\u1ea1n g\u1eedi d\u1eef li\u1ec7u m\u1ea1ng \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 DNS b\u1ea3o m\u1eadt, t\u00f9y bi\u1ebfn, v\u00e0 m\u00e3 h\u00f3a nh\u1eefng truy v\u1ea5n \u0111\u00f3. Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, Hostify.vn s\u1ebd c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u c\u00e1ch DNS ri\u00eang t\u01b0 ho\u1ea1t \u0111\u1ed9ng v\u00e0 l\u00e0m sao \u0111\u1ec3 b\u1eadt DNS ri\u00eang t\u01b0.<\/p>\n

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

Tr\u01b0\u1edbc khi \u0111i v\u00e0o DNS ri\u00eang t\u01b0, h\u00e3y c\u00f9ng \u0111i\u1ec3m qua m\u1ed9t s\u1ed1 th\u00f4ng tin ng\u1eafn g\u1ecdn v\u1ec1 DNS.<\/p>\n

Domain Name System (DNS, H\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n) c\u00f3 ch\u1ee9c n\u0103ng chuy\u1ec3n c\u00e1c \u0111\u1ecba ch\u1ec9 web (URL) d\u1ea1ng con ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c sang c\u00e1c \u0111\u1ecba ch\u1ec9 IP d\u1ea1ng s\u1ed1 m\u00e0 m\u00e1y t\u00ednh d\u00f9ng \u0111\u1ec3 giao ti\u1ebfp v\u1edbi nhau.<\/p>\n

Th\u00f4ng th\u01b0\u1eddng, m\u1ed9t m\u00e1y ch\u1ee7 DNS s\u1ebd th\u1ef1c hi\u1ec7n vi\u1ec7c chuy\u1ec3n t\u1eeb URL sang IP. Quy tr\u00ecnh n\u00e0y s\u1ebd di\u1ec5n ra m\u1ed7i khi b\u1ea1n truy c\u1eadp m\u1ed9t website, s\u1eed d\u1ee5ng c\u00e1c \u1ee9ng d\u1ee5ng, ho\u1eb7c giao ti\u1ebfp tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng c\u1ee5 th\u1ec3.<\/p>\n

Tuy nhi\u00ean, gi\u1ed1ng nh\u01b0 t\u00ean mi\u1ec1n, c\u00e1c b\u01b0\u1edbc trong quy tr\u00ecnh s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a – c\u00f3 ngh\u0129a l\u00e0 nh\u00e0 m\u1ea1ng v\u00e0 nhi\u1ec1u ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng th\u1ea5y v\u00e0 ghi l\u1ea1i ch\u00fang. \u0110i\u1ec1u n\u00e0y r\u1ea5t nguy hi\u1ec3m n\u1ebfu th\u00f4ng tin truy\u1ec1n t\u1ea3i c\u00f3 n\u1ed9i dung ri\u00eang t\u01b0 ho\u1eb7c b\u1ea3o m\u1eadt. Kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 c\u01a1 ch\u1ebf n\u00e0o b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c t\u00ednh b\u00ed m\u1eadt c\u1ee7a quy tr\u00ecnh c\u1ea3.<\/p>\n

Ch\u00ednh v\u00ec v\u1eady, b\u1ea1n s\u1ebd \u0111\u1ee9ng tr\u01b0\u1edbc nguy c\u01a1 b\u1ecb t\u1ea5n c\u00f4ng m\u1ea1ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 ki\u1ec3u t\u1ea5n c\u00f4ng trung gian.<\/p>\n

DNS ri\u00eang t\u01b0 l\u00e0 g\u00ec?<\/h3>\n

DNS ri\u00eang t\u01b0 s\u1eed d\u1ee5ng m\u1ed9t giao th\u1ee9c kh\u00e1c g\u1ecdi l\u00e0 \u201cDNS over TLS\u201d v\u00e0 \u201cDNS over HTTPS\u201d \u0111\u1ec3 m\u00e3 h\u00f3a b\u1ea5t k\u1ef3 truy v\u1ea5n DNS n\u00e0o \u0111\u01b0\u1ee3c g\u1eedi ra. DNS s\u1eed d\u1ee5ng nh\u1eefng giao th\u1ee9c n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 DoT v\u00e0 DoH.<\/p>\n

\"H\u01b0\u1edbng<\/p>\n

Nhi\u1ec1u malware, ransomware, v\u00e0 nh\u1eefng k\u1ebb \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u d\u1ef1a v\u00e0o \u0111i\u1ec3m y\u1ebfu v\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt c\u1ee7a DNS \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng. \u0110\u00f3 l\u00e0 l\u00fac DNS ri\u00eang t\u01b0 ph\u00e1t huy t\u00e1c d\u1ee5ng. DoT v\u00e0 DoH m\u00e3 h\u00f3a \u0111\u01b0\u1eddng truy\u1ec1n gi\u1eefa m\u1ea1ng c\u1ee7a b\u1ea1n v\u00e0 m\u00e1y ch\u1ee7 DNS, t\u1eeb \u0111\u00f3 ng\u0103n c\u00e1c b\u00ean th\u1ee9 ba can thi\u1ec7p d\u1eef li\u1ec7u.<\/p>\n

L\u01b0u \u00fd khi s\u1eed d\u1ee5ng DNS ri\u00eang t\u01b0<\/h3>\n

Khi s\u1eed d\u1ee5ng DNS ri\u00eang t\u01b0, b\u1ea1n \u0111ang thay \u0111\u1ed5i c\u00e1ch h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n truy c\u1eadp v\u00e0 qu\u1ea3n l\u00fd th\u00f4ng tin v\u1ec1 t\u00ean mi\u1ec1n tr\u00ean internet. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 l\u01b0u \u00fd quan tr\u1ecdng khi s\u1eed d\u1ee5ng DNS ri\u00eang t\u01b0:<\/p>\n

– B\u1ea3o m\u1eadt d\u1eef li\u1ec7u<\/strong>: DNS ri\u00eang t\u01b0 c\u00f3 th\u1ec3 gi\u00fap b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1ch \u1ea9n d\u1eef li\u1ec7u v\u1ec1 t\u00ean mi\u1ec1n kh\u1ecfi c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet (ISP) v\u00e0 c\u00e1c b\u00ean th\u1ee9 ba. Tuy nhi\u00ean, \u0111\u1ea3m b\u1ea3o b\u1ea1n tin t\u01b0\u1edfng nh\u00e0 cung c\u1ea5p DNS ri\u00eang t\u01b0 c\u1ee7a m\u00ecnh v\u00ec h\u1ecd c\u00f3 th\u1ec3 theo d\u00f5i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n tr\u00ean internet.<\/p>\n

– T\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady<\/strong>: DNS ri\u00eang t\u01b0 c\u00f3 th\u1ec3 cung c\u1ea5p t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed1t h\u01a1n so v\u1edbi DNS c\u00f4ng c\u1ed9ng c\u1ee7a ISP, nh\u01b0ng \u0111i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 cung c\u1ea5p DNS ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n. Th\u1eed nghi\u1ec7m v\u00e0 so s\u00e1nh v\u1edbi DNS c\u00f4ng c\u1ed9ng v\u00e0 c\u00e1 nh\u00e2n h\u00f3a cho nhu c\u1ea7u c\u1ee7a b\u1ea1n.<\/p>\n

– Kh\u1ea3 n\u0103ng c\u1ea5u h\u00ecnh<\/strong>: DNS ri\u00eang t\u01b0 th\u01b0\u1eddng cho ph\u00e9p b\u1ea1n t\u00f9y ch\u1ec9nh c\u1ea5u h\u00ecnh \u0111\u1ec3 ch\u1eb7n ho\u1eb7c cho ph\u00e9p truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3 ho\u1eb7c lo\u1ea1i n\u1ed9i dung. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 h\u1eefu \u00edch \u0111\u1ec3 b\u1ea3o v\u1ec7 tr\u1ebb em kh\u1ecfi n\u1ed9i dung kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c nguy c\u01a1 m\u1ea1ng.<\/p>\n

– C\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean<\/strong>: H\u00e3y \u0111\u1ea3m b\u1ea3o DNS ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 \u0111\u1ed9 tin c\u1eady. B\u1ea1n c\u1ea7n th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra v\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m DNS ri\u00eang t\u01b0 v\u00e0 danh s\u00e1ch \u0111en tr\u1eafng n\u1ebfu c\u00f3.<\/p>\n

– T\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn<\/strong>: DNS ri\u00eang t\u01b0 c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1 khi truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn ho\u1eb7c trang web y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh DNS c\u1ee5 th\u1ec3. B\u1ea1n c\u1ea7n xem x\u00e9t vi\u1ec7c c\u1ea5u h\u00ecnh l\u1ea1i DNS cho c\u00e1c d\u1ecbch v\u1ee5 n\u00e0y n\u1ebfu g\u1eb7p v\u1ea5n \u0111\u1ec1.<\/p>\n

C\u00e1ch b\u1eadt DNS ri\u00eang t\u01b0<\/h3>\n

C\u00e1c b\u01b0\u1edbc b\u1eadt DNS ri\u00eang t\u01b0 s\u1ebd ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb\/n\u1ec1n t\u1ea3ng b\u1ea1n \u0111ang s\u1eed d\u1ee5ng. \u0110\u1ec3 b\u1eadt DNS ri\u00eang t\u01b0, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh m\u1ed9t \u0111\u1ecba ch\u1ec9 DNS tr\u00ean thi\u1ebft b\u1ecb v\u00e0 truy xu\u1ea5t \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 DNS b\u00ean th\u1ee9 ba c\u00f3 h\u1ed7 tr\u1ee3 ch\u1ee9c n\u0103ng DoT ho\u1eb7c DoH.<\/p>\n

Cloudflare cung c\u1ea5p d\u1ecbch v\u1ee5 DNS ri\u00eang t\u01b0 mi\u1ec5n ph\u00ed t\u1ea1i 1.1.1.1 ho\u1eb7c 1.0.0.1, tuy nhi\u00ean h\u1ecd s\u1ebd ghi l\u1ea1i m\u1ed9t s\u1ed1 th\u00f4ng tin c\u1ee7a b\u1ea1n. D\u1ecbch v\u1ee5 n\u00e0y ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed. C\u00e1c d\u1ecbch v\u1ee5 DNS mi\u1ec5n ph\u00ed kh\u00e1c bao g\u1ed3m OpenDNS, 1.1.1.1 with Warp, v\u00e0 Google.<\/p>\n

C\u00e1ch b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean Windows 10<\/h4>\n

\u0110\u1ec3 s\u1eed d\u1ee5ng DNS ri\u00eang t\u01b0 tr\u00ean Windows 10, b\u1ea1n l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

– B\u1ea5m t\u1ed5 h\u1ee3p ph\u00edm Windows + I<\/strong> \u0111\u1ec3 m\u1edf Settings.<\/strong><\/p>\n

– Ch\u1ecdn Network & Internet.<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn Network and Sharing Center <\/strong>d\u01b0\u1edbi ph\u1ea7n Advanced Network Settings.<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn Change Adapter Settings<\/strong> t\u1eeb menu b\u00ean tr\u00e1i.<\/p>\n

\"H\u01b0\u1edbng<\/p>\n

– B\u1ea5m chu\u1ed9t ph\u1ea3i v\u00e0o m\u1ea1ng b\u1ea1n \u0111ang k\u1ebft n\u1ed1i v\u00e0 ch\u1ecdn Properties.<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn Use the following DNS server addresses <\/strong>v\u00e0 nh\u1eadp \u0111\u1ecba ch\u1ec9 DNS b\u1ea1n th\u00edch v\u00e0o.<\/p>\n

\"H\u01b0\u1edbng<\/p>\n

C\u00e1ch b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean Android<\/h4>\n

Google h\u1ed7 tr\u1ee3 DoT tr\u00ean Android 9 tr\u1edf l\u00ean. \u0110\u1ec3 b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean \u0111i\u1ec7n tho\u1ea1i, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

– V\u00e0o Settings<\/strong><\/p>\n

– Ch\u1ecdn Connections > More Connection Settings.<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn Private DNS<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn Private DNS provider hostname<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Nh\u1eadp \u0111\u1ecba ch\u1ec9 c\u1ee7a d\u1ecbch v\u1ee5 DNS ri\u00eang t\u01b0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng. L\u01b0u \u00fd, n\u1ebfu s\u1eed d\u1ee5ng CloudFlare, URL s\u1ebd l\u00e0 1dot1dot1dot1.cloudflare-dns.com.<\/p>\n

C\u00e1ch b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean Mac<\/h4>\n

\u0110\u1ec3 b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean Mac, b\u1ea1n l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

– Ch\u1ecdn menu Apple<\/strong><\/p>\n

– Ch\u1ecdn System Preferences > Network<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn k\u1ebft n\u1ed1i m\u1ea1ng b\u1ea1n \u0111ang d\u00f9ng v\u00e0 b\u1ea5m Advanced<\/strong><\/p>\n

– B\u1ea5m DNS, <\/strong>sau \u0111\u00f3 ch\u1ecdn n\u00fat Add<\/strong> (d\u1ea5u +) \u1edf d\u01b0\u1edbi c\u00f9ng c\u1ee7a danh s\u00e1ch<\/p>\n

– Nh\u1eadp \u0111\u1ecba ch\u1ec9 IPv4 ho\u1eb7c IPv6 c\u1ee7a m\u00e1y ch\u1ee7 DNS b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng<\/p>\n

– B\u1ea5m OK.<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

C\u00e1ch b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean iPhone<\/h4>\n

\u0110\u1ec3 s\u1eed d\u1ee5ng DNS ri\u00eang t\u01b0 tr\u00ean iPhone, b\u1ea1n l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

– V\u00e0o Settings > Wi-Fi.<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/p>\n

– B\u1ea5m v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng Information <\/strong>(ch\u1eef i) <\/strong>c\u1ea1nh k\u1ebft n\u1ed1i Wi-Fi.<\/p>\n

\"H\u01b0\u1edbng<\/p>\n

– Cu\u1ed9n xu\u1ed1ng v\u00e0 ch\u1ecdn Configure DNS<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– Ch\u1ecdn Manual<\/strong><\/p>\n

\"H\u01b0\u1edbng<\/strong><\/p>\n

– B\u1ea5m Add Server<\/strong><\/p>\n

– Nh\u1eadp v\u00e0o \u0111\u1ecba ch\u1ec9 c\u1ee7a d\u1ecbch v\u1ee5 DNS ri\u00eang t\u01b0 m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng.<\/p>\n

Ki\u1ec3m tra DNS ri\u00eang t\u01b0 sau khi b\u1eadt<\/h3>\n

Sau khi \u0111\u00e3 b\u1eadt DNS ri\u00eang t\u01b0 tr\u00ean c\u00e1c thi\u1ebft b\u1ecb, b\u1ea1n c\u1ea7n ki\u1ec3m tra \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i an to\u00e0n. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn, nh\u01b0ng t\u1ed1t nh\u1ea5t h\u00e3y ch\u1ecdn c\u00f4ng c\u1ee5 ki\u1ec3m tra b\u1ea3o m\u1eadt c\u1ee7a Cloudflare t\u1ea1i \u0111\u1ecba ch\u1ec9 https:\/\/www.cloudflare.com\/ssl\/encrypted-sni\/.<\/p>\n

C\u00f4ng c\u1ee5 n\u00e0y s\u1ebd ki\u1ec3m tra xem truy v\u1ea5n DNS c\u1ee7a b\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a hay ch\u01b0a, tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n c\u00f3 h\u1ed7 tr\u1ee3 Server Name Indication (SNI) m\u00e3 h\u00f3a hay kh\u00f4ng, DNS resolver c\u1ee7a b\u1ea1n c\u00f3 s\u1eed d\u1ee5ng Domain Name System Security Extensions (DNSSEC) hay kh\u00f4ng, v\u00e0 phi\u00ean b\u1ea3n TLS n\u00e0o \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/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