{"id":24270,"date":"2025-05-23T10:58:36","date_gmt":"2025-05-23T03:58:36","guid":{"rendered":"https:\/\/vbee.vn\/blog\/?p=24270"},"modified":"2025-05-23T18:08:38","modified_gmt":"2025-05-23T11:08:38","slug":"google-public-dns","status":"publish","type":"post","link":"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/","title":{"rendered":"Google Public DNS: Gi\u1ea3i ph\u00e1p n\u00e2ng cao t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt khi l\u01b0\u1edbt web"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\"><div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung ch\u00ednh<\/p><span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#1_Gioi_thieu_ve_Google_Public_DNS\" >1. Gi\u1edbi thi\u1ec7u v\u1ec1 Google Public DNS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#11_Google_Public_DNS_la_gi\" >1.1 Google Public DNS l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#12_He_thong_DNS_cua_Google_hoat_dong_nhu_the_nao\" >1.2 H\u1ec7 th\u1ed1ng DNS c\u1ee7a Google ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#13_Lich_su_va_su_phat_trien_cua_Google_Public_DNS\" >1.3 L\u1ecbch s\u1eed v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a Google Public DNS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#2_Loi_ich_khi_su_dung_Google_Public_DNS\" >2. L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng Google Public DNS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#21_Tang_toc_do_truy_cap_web\" >2.1 T\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp web<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#22_Cai_thien_do_bao_mat\" >2.2 C\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ea3o m\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#23_Nang_cao_do_tin_cay_cua_ket_noi\" >2.3 N\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a k\u1ebft n\u1ed1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#24_Giam_thieu_thoi_gian_gian_doan_dich_vu\" >2.4 Gi\u1ea3m thi\u1ec3u th\u1eddi gian gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#3_Cach_thiet_lap_DNS_Google_tren_cac_thiet_bi\" >3. C\u00e1ch thi\u1ebft l\u1eadp DNS Google tr\u00ean c\u00e1c thi\u1ebft b\u1ecb<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#31_Cach_thiet_lap_Google_DNS_tren_may_tinh\" >3.1 C\u00e1ch thi\u1ebft l\u1eadp Google DNS tr\u00ean m\u00e1y t\u00ednh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#32_Huong_dan_thiet_lap_Google_DNS_tren_dien_thoai_di_dong\" >3.2 H\u01b0\u1edbng d\u1eabn thi\u1ebft l\u1eadp Google DNS tr\u00ean \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#33_Cach_cau_hinh_Google_DNS_tren_router\" >3.3 C\u00e1ch c\u1ea5u h\u00ecnh Google DNS tr\u00ean router<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#4_So_sanh_Google_Public_DNS_voi_cac_DNS_pho_bien_khac\" >4. So s\u00e1nh Google Public DNS v\u1edbi c\u00e1c DNS ph\u1ed5 bi\u1ebfn kh\u00e1c<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#41_So_sanh_Google_Public_DNS_va_Cloudflare_DNS\" >4.1 So s\u00e1nh Google Public DNS v\u00e0 Cloudflare DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#42_So_sanh_Google_Public_DNS_va_OpenDNS\" >4.2 So s\u00e1nh Google Public DNS v\u00e0 OpenDNS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#5_Nhung_cau_hoi_thuong_gap_ve_Google_Public_DNS\" >5. Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Google Public DNS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#51_Google_Public_DNS_co_mien_phi_khong\" >5.1 Google Public DNS c\u00f3 mi\u1ec5n ph\u00ed kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#52_Viec_su_dung_Google_Public_DNS_co_an_toan_khong\" >5.2 Vi\u1ec7c s\u1eed d\u1ee5ng Google Public DNS c\u00f3 an to\u00e0n kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#53_Google_Public_DNS_co_hoat_dong_voi_IPv6_khong\" >5.3 Google Public DNS c\u00f3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi IPv6 kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#54_Google_Public_DNS_co_theo_doi_lich_su_duyet_web_cua_toi_khong\" >5.4 Google Public DNS c\u00f3 theo d\u00f5i l\u1ecbch s\u1eed duy\u1ec7t web c\u1ee7a t\u00f4i kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/vbee.vn\/blog\/google\/google-public-dns\/#55_Toc_do_Internet_cua_toi_co_thuc_su_tang_khi_su_dung_Google_Public_DNS_khong\" >5.5 T\u1ed1c \u0111\u1ed9 Internet c\u1ee7a t\u00f4i c\u00f3 th\u1ef1c s\u1ef1 t\u0103ng khi s\u1eed d\u1ee5ng Google Public DNS kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div><p><strong>Google Public DNS l\u00e0 d\u1ecbch v\u1ee5 DNS mi\u1ec5n ph\u00ed gi\u00fap c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 truy c\u1eadp internet v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt cho ng\u01b0\u1eddi d\u00f9ng. V\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1nh m\u1ebd, d\u1ecbch v\u1ee5 n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap duy\u1ec7t web nhanh ch\u00f3ng m\u00e0 c\u00f2n b\u1ea3o v\u1ec7 b\u1ea1n kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda tr\u00ean m\u1ea1ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c l\u1ee3i \u00edch khi s\u1eed d\u1ee5ng Google Public DNS cho vi\u1ec7c l\u01b0\u1edbt web an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/strong><\/p><p style=\"text-align: center;\"><p><iframe style=\"position: relative; top: 0px; border: none;\" title=\"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng\" src=\"https:\/\/vbee.vn\/demo\" width=\"100%\" height=\"320\"><\/iframe><\/p><h2><span class=\"ez-toc-section\" id=\"1_Gioi_thieu_ve_Google_Public_DNS\"><\/span>1. Gi\u1edbi thi\u1ec7u v\u1ec1 Google Public DNS<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"11_Google_Public_DNS_la_gi\"><\/span>1.1 Google Public DNS l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Google Public DNS l\u00e0 d\u1ecbch v\u1ee5 h\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n (DNS) mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi Google. \u0110\u00e2y l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m thay th\u1ebf cho d\u1ecbch v\u1ee5 DNS m\u1eb7c \u0111\u1ecbnh c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) c\u1ee7a b\u1ea1n, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 tr\u1ea3i nghi\u1ec7m l\u01b0\u1edbt web.<\/p><p>V\u1ec1 c\u01a1 b\u1ea3n, Google Public DNS \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t &#8220;danh b\u1ea1 \u0111i\u1ec7n tho\u1ea1i&#8221; c\u1ee7a Internet, chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00ean mi\u1ec1n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng nh\u01b0 &#8220;google.com&#8221; th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c. M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a Google khi cung c\u1ea5p d\u1ecbch v\u1ee5 n\u00e0y l\u00e0 nh\u1eb1m t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp web, c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ea3o m\u1eadt v\u00e0 n\u00e2ng cao \u0111\u1ed9 tin c\u1eady cho ng\u01b0\u1eddi d\u00f9ng Internet to\u00e0n c\u1ea7u.<\/p><figure id=\"attachment_24376\" aria-describedby=\"caption-attachment-24376\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-24376\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/google-dns-la-gi-2.webp\" alt=\"Google Public DNS gi\u1ed1ng nh\u01b0 &quot;danh b\u1ea1 \u0111i\u1ec7n tho\u1ea1i&quot; c\u1ee7a Internet, chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n nh\u01b0 &quot;google.com&quot; th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y t\u00ednh hi\u1ec3u \u0111\u01b0\u1ee3c.\" width=\"768\" height=\"480\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/google-dns-la-gi-2.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/google-dns-la-gi-2-300x188.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-24376\" class=\"wp-caption-text\">Google Public DNS gi\u1ed1ng nh\u01b0 &#8220;danh b\u1ea1 \u0111i\u1ec7n tho\u1ea1i&#8221; c\u1ee7a Internet, chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n nh\u01b0 &#8220;google.com&#8221; th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y t\u00ednh hi\u1ec3u \u0111\u01b0\u1ee3c.<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"12_He_thong_DNS_cua_Google_hoat_dong_nhu_the_nao\"><\/span>1.2 H\u1ec7 th\u1ed1ng DNS c\u1ee7a Google ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>H\u1ec7 th\u1ed1ng DNS c\u1ee7a Google ho\u1ea1t \u0111\u1ed9ng theo nguy\u00ean l\u00fd c\u0103n b\u1ea3n c\u1ee7a DNS nh\u01b0ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 mang l\u1ea1i hi\u1ec7u su\u1ea5t cao h\u01a1n. Khi b\u1ea1n nh\u1eadp m\u1ed9t trang web v\u00e0o tr\u00ecnh duy\u1ec7t, m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n g\u1eedi m\u1ed9t truy v\u1ea5n \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS \u0111\u1ec3 t\u00ecm \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3. Google Public DNS ti\u1ebfp nh\u1eadn y\u00eau c\u1ea7u n\u00e0y v\u00e0 tr\u1ea3 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP ch\u00ednh x\u00e1c, cho ph\u00e9p tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n k\u1ebft n\u1ed1i v\u1edbi trang web.<\/p><p>\u0110\u1ec3 s\u1eed d\u1ee5ng Google Public DNS, b\u1ea1n ch\u1ec9 c\u1ea7n c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh v\u1edbi hai \u0111\u1ecba ch\u1ec9 IP \u0111\u01a1n gi\u1ea3n:<\/p><ul><li>\u0110\u1ecba ch\u1ec9 DNS ch\u00ednh: 8.8.8.8<\/li><li>\u0110\u1ecba ch\u1ec9 DNS d\u1ef1 ph\u00f2ng: 8.8.4.4<\/li><\/ul><p>Nh\u1eefng \u0111\u1ecba ch\u1ec9 n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0 Google DNS 8.8.8.8, \u0111\u00e3 tr\u1edf n\u00ean quen thu\u1ed9c v\u1edbi nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng c\u00f4ng ngh\u1ec7 nh\u1edd v\u00e0o s\u1ef1 \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 nh\u1edb.<\/p><figure id=\"attachment_24385\" aria-describedby=\"caption-attachment-24385\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-24385 size-full\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/he-thong-dns-cua-google-hoat-dong-nhu-the-nao.webp\" alt=\"C\u00f3 2 \u0111\u1ecba ch\u1ec9 Google DNS 8.8.8.8 v\u00e0 8.8.4.4\" width=\"768\" height=\"328\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/he-thong-dns-cua-google-hoat-dong-nhu-the-nao.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/he-thong-dns-cua-google-hoat-dong-nhu-the-nao-300x128.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-24385\" class=\"wp-caption-text\">C\u00f3 2 \u0111\u1ecba ch\u1ec9 Google DNS 8.8.8.8 v\u00e0 8.8.4.4<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"13_Lich_su_va_su_phat_trien_cua_Google_Public_DNS\"><\/span>1.3 L\u1ecbch s\u1eed v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a Google Public DNS<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Google Public DNS \u0111\u01b0\u1ee3c ra m\u1eaft ch\u00ednh th\u1ee9c v\u00e0o ng\u00e0y 3 th\u00e1ng 12 n\u0103m 2009, nh\u01b0 m\u1ed9t ph\u1ea7n trong n\u1ed7 l\u1ef1c c\u1ee7a Google nh\u1eb1m c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m Internet to\u00e0n c\u1ea7u. Th\u1eddi \u0111i\u1ec3m \u0111\u00f3, c\u00e1c d\u1ecbch v\u1ee5 DNS c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 thi\u1ebfu c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt quan tr\u1ecdng.<\/p><p>K\u1ec3 t\u1eeb khi ra m\u1eaft, Google \u0111\u00e3 li\u00ean t\u1ee5c n\u00e2ng c\u1ea5p v\u00e0 c\u1ea3i ti\u1ebfn d\u1ecbch v\u1ee5 n\u00e0y. M\u1ed9t trong nh\u1eefng b\u01b0\u1edbc ti\u1ebfn quan tr\u1ecdng l\u00e0 vi\u1ec7c tri\u1ec3n khai h\u1ed7 tr\u1ee3 DNSSEC (DNS Security <a href=\"https:\/\/vbee.vn\/blog\/google\/tien-ich-mo-rong-tren-google-chrome\/\">Extensions<\/a>) v\u00e0o n\u0103m 2013, gi\u00fap x\u00e1c th\u1ef1c c\u00e1c ph\u1ea3n h\u1ed3i DNS v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng gi\u1ea3 m\u1ea1o.<\/p><p>V\u00e0o n\u0103m 2016, Google Public DNS tr\u1edf th\u00e0nh h\u1ec7 th\u1ed1ng DNS c\u00f4ng c\u1ed9ng l\u1edbn nh\u1ea5t th\u1ebf gi\u1edbi, x\u1eed l\u00fd h\u01a1n 400 t\u1ef7 truy v\u1ea5n m\u1ed7i ng\u00e0y. \u0110\u1ebfn n\u0103m 2018, Google \u0111\u00e3 th\u00eam h\u1ed7 tr\u1ee3 cho DNS over HTTPS (DoH) v\u00e0 DNS over TLS (DoT), c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u00ednh b\u1ea3o m\u1eadt v\u00e0 ri\u00eang t\u01b0 cho ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng c\u00e1ch m\u00e3 h\u00f3a c\u00e1c truy v\u1ea5n DNS.<\/p><p>Hi\u1ec7n nay, Google Public DNS ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u1edbi vi\u1ec7c m\u1edf r\u1ed9ng m\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 v\u00e0 c\u1eadp nh\u1eadt c\u00e1c c\u00f4ng ngh\u1ec7 b\u1ea3o m\u1eadt m\u1edbi nh\u1ea5t, ph\u1ee5c v\u1ee5 h\u00e0ng tr\u0103m tri\u1ec7u ng\u01b0\u1eddi d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p><h2><span class=\"ez-toc-section\" id=\"2_Loi_ich_khi_su_dung_Google_Public_DNS\"><\/span>2. L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng Google Public DNS<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"21_Tang_toc_do_truy_cap_web\"><\/span>2.1 T\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp web<span class=\"ez-toc-section-end\"><\/span><\/h3><p>M\u1ed9t trong nh\u1eefng l\u1ee3i \u00edch r\u00f5 r\u00e0ng nh\u1ea5t khi s\u1eed d\u1ee5ng Google Public DNS l\u00e0 kh\u1ea3 n\u0103ng t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp web. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua nhi\u1ec1u c\u01a1 ch\u1ebf t\u1ed1i \u01b0u h\u00f3a m\u00e0 Google \u0111\u00e3 tri\u1ec3n khai:<\/p><p>Google s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 m\u1ea1nh m\u1ebd v\u00e0 ph\u00e2n b\u1ed1 r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n c\u1ea7u, gi\u00fap gi\u1ea3m th\u1eddi gian ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n.<\/p><p>Google Public DNS s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt b\u1ed9 nh\u1edb \u0111\u1ec7m th\u00f4ng minh, l\u01b0u tr\u1eef c\u00e1c k\u1ebft qu\u1ea3 truy v\u1ea5n ph\u1ed5 bi\u1ebfn \u0111\u1ec3 c\u00f3 th\u1ec3 tr\u1ea3 v\u1ec1 ngay l\u1eadp t\u1ee9c cho c\u00e1c y\u00eau c\u1ea7u ti\u1ebfp theo.<\/p><p>Google DNS 8.8.8.8 tri\u1ec3n khai giao th\u1ee9c anycast, cho ph\u00e9p truy v\u1ea5n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS g\u1ea7n nh\u1ea5t, thay v\u00ec ph\u1ea3i di chuy\u1ec3n qua nhi\u1ec1u m\u00e1y ch\u1ee7 kh\u00e1c nhau.<\/p><h3><span class=\"ez-toc-section\" id=\"22_Cai_thien_do_bao_mat\"><\/span>2.2 C\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ea3o m\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Google Public DNS cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i t\u1ea5n c\u00f4ng DNS cache poisoning (\u0111\u1ea7u \u0111\u1ed9c b\u1ed9 nh\u1edb \u0111\u1ec7m DNS), m\u1ed9t k\u1ef9 thu\u1eadt m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng c\u1ed1 g\u1eafng \u0111\u01b0a th\u00f4ng tin gi\u1ea3 m\u1ea1o v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a m\u00e1y ch\u1ee7 DNS. H\u1ec7 th\u1ed1ng DNS c\u1ee7a Google c\u00f3 c\u00e1c c\u01a1 ch\u1ebf ki\u1ec3m tra v\u00e0 x\u00e1c th\u1ef1c nghi\u00eam ng\u1eb7t \u0111\u1ec3 ng\u0103n ch\u1eb7n lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y.<\/p><p>D\u1ecbch v\u1ee5 c\u0169ng h\u1ed7 tr\u1ee3 c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt ti\u00ean ti\u1ebfn nh\u01b0 DNS over HTTPS (DoH) v\u00e0 DNS over TLS (DoT). Nh\u1eefng giao th\u1ee9c n\u00e0y m\u00e3 h\u00f3a c\u00e1c truy v\u1ea5n DNS, ng\u0103n ch\u1eb7n vi\u1ec7c c\u00e1c b\u00ean th\u1ee9 ba nh\u01b0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet ho\u1eb7c k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 theo d\u00f5i ho\u1eb7c can thi\u1ec7p v\u00e0o ho\u1ea1t \u0111\u1ed9ng duy\u1ec7t web c\u1ee7a b\u1ea1n.<\/p><h3><span class=\"ez-toc-section\" id=\"23_Nang_cao_do_tin_cay_cua_ket_noi\"><\/span>2.3 N\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a k\u1ebft n\u1ed1i<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Google Public DNS cung c\u1ea5p \u0111\u1ed9 tin c\u1eady v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi nhi\u1ec1u d\u1ecbch v\u1ee5 DNS kh\u00e1c, \u0111\u1eb7c bi\u1ec7t l\u00e0 DNS c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet \u0111\u1ecba ph\u01b0\u01a1ng. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua h\u1ec7 th\u1ed1ng m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n v\u00e0 d\u1ef1 ph\u00f2ng m\u00e0 Google \u0111\u00e3 x\u00e2y d\u1ef1ng.<\/p><p>M\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 DNS c\u1ee7a Google \u0111\u01b0\u1ee3c tri\u1ec3n khai t\u1ea1i nhi\u1ec1u trung t\u00e2m d\u1eef li\u1ec7u tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi, t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i cao. N\u1ebfu m\u1ed9t m\u00e1y ch\u1ee7 g\u1eb7p s\u1ef1 c\u1ed1, truy v\u1ea5n DNS c\u1ee7a b\u1ea1n s\u1ebd t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn m\u00e1y ch\u1ee7 kh\u00e1c, \u0111\u1ea3m b\u1ea3o d\u1ecbch v\u1ee5 li\u00ean t\u1ee5c kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p><h3><span class=\"ez-toc-section\" id=\"24_Giam_thieu_thoi_gian_gian_doan_dich_vu\"><\/span>2.4 Gi\u1ea3m thi\u1ec3u th\u1eddi gian gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5<span class=\"ez-toc-section-end\"><\/span><\/h3><p>S\u1eed d\u1ee5ng Google Public DNS gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 Internet m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i. M\u00e1y ch\u1ee7 DNS c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet th\u01b0\u1eddng c\u00f3 th\u1ec3 g\u1eb7p s\u1ef1 c\u1ed1, qu\u00e1 t\u1ea3i trong gi\u1edd cao \u0111i\u1ec3m, ho\u1eb7c th\u1eadm ch\u00ed b\u1ecb t\u1ea5n c\u00f4ng DDoS, d\u1eabn \u0111\u1ebfn vi\u1ec7c ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 truy c\u1eadp web m\u1eb7c d\u00f9 k\u1ebft n\u1ed1i Internet v\u1eabn ho\u1ea1t \u0111\u1ed9ng. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Google DNS 8.8.8.8, b\u1ea1n tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec3m y\u1ebfu n\u00e0y.<\/p><p>Ngo\u00e0i ra, Google Public DNS \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng truy v\u1ea5n kh\u1ed5ng l\u1ed3 m\u00e0 kh\u00f4ng b\u1ecb qu\u00e1 t\u1ea3i, ngay c\u1ea3 trong c\u00e1c s\u1ef1 ki\u1ec7n l\u1edbn g\u00e2y t\u0103ng \u0111\u1ed9t bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp Internet. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 truy c\u1eadp web b\u00ecnh th\u01b0\u1eddng ngay c\u1ea3 khi nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng kh\u00e1c \u0111ang g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 DNS th\u00f4ng th\u01b0\u1eddng.<\/p><h2><span class=\"ez-toc-section\" id=\"3_Cach_thiet_lap_DNS_Google_tren_cac_thiet_bi\"><\/span>3. C\u00e1ch thi\u1ebft l\u1eadp DNS Google tr\u00ean c\u00e1c thi\u1ebft b\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"31_Cach_thiet_lap_Google_DNS_tren_may_tinh\"><\/span>3.1 C\u00e1ch thi\u1ebft l\u1eadp Google DNS tr\u00ean m\u00e1y t\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Tr\u00ean Windows:<\/strong><\/p><p>\u0110\u1ec3 thi\u1ebft l\u1eadp Google Public DNS tr\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows, h\u00e3y l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p><ul><li>Nh\u1ea5n ph\u00edm Windows + R, nh\u1eadp &#8220;control panel&#8221; v\u00e0 nh\u1ea5n Enter \u0111\u1ec3 m\u1edf Control Panel.<\/li><li>T\u00ecm v\u00e0 nh\u1ea5p v\u00e0o &#8220;Network and Internet&#8221;, sau \u0111\u00f3 ch\u1ecdn &#8220;Network and Sharing Center&#8221;.<\/li><li>Trong c\u1eeda s\u1ed5 m\u1edbi, nh\u1ea5p v\u00e0o k\u1ebft n\u1ed1i m\u1ea1ng b\u1ea1n \u0111ang s\u1eed d\u1ee5ng (c\u00f3 th\u1ec3 l\u00e0 Wi-Fi ho\u1eb7c Ethernet).<\/li><li>Trong h\u1ed9p tho\u1ea1i tr\u1ea1ng th\u00e1i, nh\u1ea5p v\u00e0o n\u00fat &#8220;Properties&#8221;.<\/li><li>Trong danh s\u00e1ch c\u00e1c m\u1ee5c, t\u00ecm v\u00e0 ch\u1ecdn &#8220;Internet Protocol Version 4 (TCP\/IPv4)&#8221;, sau \u0111\u00f3 nh\u1ea5p v\u00e0o &#8220;Properties&#8221;.<\/li><li>Ch\u1ecdn t\u00f9y ch\u1ecdn &#8220;Use the following DNS server addresses&#8221;.<\/li><li>Nh\u1eadp 8.8.8.8 v\u00e0o \u00f4 &#8220;Preferred DNS server&#8221; v\u00e0 8.8.4.4 v\u00e0o \u00f4 &#8220;Alternate DNS server&#8221;.<\/li><li>Nh\u1ea5p v\u00e0o &#8220;OK&#8221; \u0111\u1ec3 l\u01b0u thay \u0111\u1ed5i, sau \u0111\u00f3 \u0111\u00f3ng t\u1ea5t c\u1ea3 c\u00e1c c\u1eeda s\u1ed5 c\u00f2n l\u1ea1i.<\/li><\/ul><figure id=\"attachment_24478\" aria-describedby=\"caption-attachment-24478\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-24478 size-full\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-windows.webp\" alt=\"C\u00e1ch thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean Windows.\" width=\"768\" height=\"634\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-windows.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-windows-300x248.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-24478\" class=\"wp-caption-text\">C\u00e1ch thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean Windows.<\/figcaption><\/figure><p><strong>Tr\u00ean macOS:<\/strong><\/p><p>\u0110\u1ec3 thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean macOS, h\u00e3y l\u00e0m theo h\u01b0\u1edbng d\u1eabn sau:<\/p><ul><li>Nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng Apple \u1edf g\u00f3c tr\u00ean b\u00ean tr\u00e1i m\u00e0n h\u00ecnh v\u00e0 ch\u1ecdn &#8220;System Preferences&#8221;.<\/li><li>Nh\u1ea5p v\u00e0o &#8220;Network&#8221;.<\/li><li>Ch\u1ecdn k\u1ebft n\u1ed1i m\u1ea1ng b\u1ea1n \u0111ang s\u1eed d\u1ee5ng t\u1eeb danh s\u00e1ch b\u00ean tr\u00e1i (Wi-Fi ho\u1eb7c Ethernet).<\/li><li>Nh\u1ea5p v\u00e0o n\u00fat &#8220;Advanced&#8221; \u1edf g\u00f3c d\u01b0\u1edbi b\u00ean ph\u1ea3i.<\/li><li>Chuy\u1ec3n \u0111\u1ebfn tab &#8220;DNS&#8221;.<\/li><li>Nh\u1ea5p v\u00e0o n\u00fat &#8220;+&#8221; \u1edf d\u01b0\u1edbi c\u00f9ng b\u00ean tr\u00e1i \u0111\u1ec3 th\u00eam \u0111\u1ecba ch\u1ec9 DNS m\u1edbi.<\/li><li>Nh\u1eadp 8.8.8.8, sau \u0111\u00f3 nh\u1ea5p v\u00e0o &#8220;+&#8221; m\u1ed9t l\u1ea7n n\u1eefa v\u00e0 nh\u1eadp 8.8.4.4.<\/li><li>Nh\u1ea5p v\u00e0o &#8220;OK&#8221;, sau \u0111\u00f3 nh\u1ea5p &#8220;Apply&#8221; \u0111\u1ec3 l\u01b0u thay \u0111\u1ed5i.<\/li><\/ul><p>Sau khi c\u1ea5u h\u00ecnh, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra xem Google Public DNS c\u00f3 ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng b\u1eb1ng c\u00e1ch m\u1edf tr\u00ecnh duy\u1ec7t web v\u00e0 truy c\u1eadp c\u00e1c trang web nh\u01b0 b\u00ecnh th\u01b0\u1eddng.<\/p><figure id=\"attachment_24378\" aria-describedby=\"caption-attachment-24378\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-24378 size-full\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-mac-os.webp\" alt=\"C\u00e1ch thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean macOS.\" width=\"768\" height=\"647\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-mac-os.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-mac-os-300x253.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-24378\" class=\"wp-caption-text\">C\u00e1ch thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean macOS.<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"32_Huong_dan_thiet_lap_Google_DNS_tren_dien_thoai_di_dong\"><\/span>3.2 H\u01b0\u1edbng d\u1eabn thi\u1ebft l\u1eadp Google DNS tr\u00ean \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Tr\u00ean Android:<\/strong><\/p><p>\u0110\u1ec3 c\u1ea5u h\u00ecnh Google Public DNS tr\u00ean thi\u1ebft b\u1ecb Android, h\u00e3y l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p><ul><li>M\u1edf \u1ee9ng d\u1ee5ng &#8220;C\u00e0i \u0111\u1eb7t&#8221; tr\u00ean thi\u1ebft b\u1ecb Android c\u1ee7a b\u1ea1n.<\/li><li>T\u00ecm v\u00e0 nh\u1ea5p v\u00e0o &#8220;Wi-Fi&#8221; ho\u1eb7c &#8220;M\u1ea1ng &amp; Internet&#8221; (t\u00f9y thu\u1ed9c v\u00e0o <a href=\"https:\/\/vbee.vn\/blog\/google\/he-dieu-hanh-android\/\">phi\u00ean b\u1ea3n Android<\/a>).<\/li><li>Nh\u1ea5p gi\u1eef v\u00e0o m\u1ea1ng Wi-Fi b\u1ea1n \u0111ang k\u1ebft n\u1ed1i (ho\u1eb7c nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng b\u00e1nh r\u0103ng b\u00ean c\u1ea1nh m\u1ea1ng).<\/li><li>Ch\u1ecdn &#8220;S\u1eeda \u0111\u1ed5i m\u1ea1ng&#8221; ho\u1eb7c &#8220;Qu\u1ea3n l\u00fd c\u00e0i \u0111\u1eb7t m\u1ea1ng&#8221;.<\/li><li>T\u00ecm t\u00f9y ch\u1ecdn &#8220;C\u00e0i \u0111\u1eb7t IP&#8221; ho\u1eb7c &#8220;C\u00e0i \u0111\u1eb7t n\u00e2ng cao&#8221; v\u00e0 thay \u0111\u1ed5i t\u1eeb &#8220;DHCP&#8221; sang &#8220;T\u0129nh&#8221;.<\/li><li>Cu\u1ed9n xu\u1ed1ng \u0111\u1ec3 t\u00ecm c\u00e0i \u0111\u1eb7t DNS.<\/li><li>Nh\u1eadp 8.8.8.8 l\u00e0 DNS 1 v\u00e0 8.8.4.4 l\u00e0 DNS 2.<\/li><li>Nh\u1ea5p &#8220;L\u01b0u&#8221; \u0111\u1ec3 \u00e1p d\u1ee5ng thay \u0111\u1ed5i.<\/li><\/ul><figure id=\"attachment_24381\" aria-describedby=\"caption-attachment-24381\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-24381 size-full\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-android.webp\" alt=\"C\u00e1ch thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean Android.\" width=\"768\" height=\"530\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-android.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-android-300x207.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-24381\" class=\"wp-caption-text\">C\u00e1ch thi\u1ebft l\u1eadp Google DNS 8.8.8.8 tr\u00ean Android.<\/figcaption><\/figure><p><strong>Tr\u00ean iOS:<\/strong><\/p><p>\u0110\u1ec3 thi\u1ebft l\u1eadp Google Public DNS tr\u00ean iPhone ho\u1eb7c iPad, h\u00e3y th\u1ef1c hi\u1ec7n theo h\u01b0\u1edbng d\u1eabn sau:<\/p><ul><li>M\u1edf \u1ee9ng d\u1ee5ng &#8220;C\u00e0i \u0111\u1eb7t&#8221; tr\u00ean thi\u1ebft b\u1ecb iOS c\u1ee7a b\u1ea1n.<\/li><li>Nh\u1ea5p v\u00e0o &#8220;Wi-Fi&#8221;.<\/li><li>T\u00ecm m\u1ea1ng Wi-Fi b\u1ea1n \u0111ang k\u1ebft n\u1ed1i v\u00e0 nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng &#8220;i&#8221; ho\u1eb7c &#8220;th\u00f4ng tin&#8221; b\u00ean c\u1ea1nh n\u00f3.<\/li><li>Cu\u1ed9n xu\u1ed1ng v\u00e0 t\u00ecm ph\u1ea7n &#8220;C\u1ea5u h\u00ecnh DNS&#8221;.<\/li><li>Thay \u0111\u1ed5i t\u1eeb &#8220;T\u1ef1 \u0111\u1ed9ng&#8221; sang &#8220;Th\u1ee7 c\u00f4ng&#8221;.<\/li><li>X\u00f3a b\u1ea5t k\u1ef3 \u0111\u1ecba ch\u1ec9 DNS n\u00e0o hi\u1ec7n c\u00f3 v\u00e0 nh\u1eadp: 8.8.8.8, 8.8.4.4 (kh\u00f4ng c\u00f3 kho\u1ea3ng tr\u1eafng sau d\u1ea5u ph\u1ea9y).<\/li><li>Nh\u1ea5p v\u00e0o n\u00fat &#8220;L\u01b0u&#8221; \u1edf g\u00f3c tr\u00ean b\u00ean ph\u1ea3i.<\/li><\/ul><p>Sau khi c\u1ea5u h\u00ecnh, thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u1ee7a b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng Google DNS 8.8.8.8 cho t\u1ea5t c\u1ea3 c\u00e1c truy v\u1ea5n DNS, c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 duy\u1ec7t web v\u00e0 b\u1ea3o m\u1eadt.<\/p><figure id=\"attachment_24390\" aria-describedby=\"caption-attachment-24390\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-24390 size-full\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-ios-1.webp\" alt=\"C\u00e1c bu\u1edbc thi\u1ebft l\u1eadp DNS tr\u00ean IOS.\" width=\"768\" height=\"754\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-ios-1.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/05\/cach-thiet-lap-google-dns-tren-ios-1-300x295.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-24390\" class=\"wp-caption-text\">C\u00e1c bu\u1edbc thi\u1ebft l\u1eadp DNS tr\u00ean IOS.<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"33_Cach_cau_hinh_Google_DNS_tren_router\"><\/span>3.3 C\u00e1ch c\u1ea5u h\u00ecnh Google DNS tr\u00ean router<span class=\"ez-toc-section-end\"><\/span><\/h3><p>C\u1ea5u h\u00ecnh Google Public DNS tr\u1ef1c ti\u1ebfp tr\u00ean router l\u00e0 gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 nh\u1ea5t v\u00ec n\u00f3 s\u1ebd \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng c\u1ee7a b\u1ea1n m\u00e0 kh\u00f4ng c\u1ea7n c\u1ea5u h\u00ecnh t\u1eebng thi\u1ebft b\u1ecb ri\u00eang bi\u1ec7t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn chung \u0111\u1ec3 thi\u1ebft l\u1eadp DNS Google tr\u00ean router:<\/p><ul><li><strong>Truy c\u1eadp v\u00e0o giao di\u1ec7n qu\u1ea3n l\u00fd router:<\/strong>&#8211; M\u1edf tr\u00ecnh duy\u1ec7t web v\u00e0 nh\u1eadp \u0111\u1ecba ch\u1ec9 IP c\u1ee7a router v\u00e0o thanh \u0111\u1ecba ch\u1ec9 (th\u01b0\u1eddng l\u00e0 192.168.0.1, 192.168.1.1 ho\u1eb7c 10.0.0.1).- Nh\u1eadp t\u00ean \u0111\u0103ng nh\u1eadp v\u00e0 m\u1eadt kh\u1ea9u c\u1ee7a router (n\u1ebfu b\u1ea1n ch\u01b0a thay \u0111\u1ed5i, h\u00e3y ki\u1ec3m tra m\u1eb7t sau c\u1ee7a router ho\u1eb7c t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 bi\u1ebft th\u00f4ng tin \u0111\u0103ng nh\u1eadp m\u1eb7c \u0111\u1ecbnh).<\/li><li><strong>T\u00ecm c\u00e0i \u0111\u1eb7t DNS:<\/strong> T\u00ecm ph\u1ea7n &#8220;DNS&#8221;, &#8220;WAN Setup&#8221;, &#8220;Internet Setup&#8221; ho\u1eb7c &#8220;Network Settings&#8221; trong giao di\u1ec7n qu\u1ea3n l\u00fd.- V\u1ecb tr\u00ed ch\u00ednh x\u00e1c c\u1ee7a c\u00e0i \u0111\u1eb7t DNS s\u1ebd kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o nh\u00e0 s\u1ea3n xu\u1ea5t router v\u00e0 firmware.<\/li><li><strong>Thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS:<\/strong>&#8211; T\u00ecm t\u00f9y ch\u1ecdn \u0111\u1ec3 s\u1eed d\u1ee5ng DNS t\u0129nh thay v\u00ec DNS t\u1ef1 \u0111\u1ed9ng t\u1eeb ISP.- Nh\u1eadp c\u00e1c \u0111\u1ecba ch\u1ec9 DNS c\u1ee7a Google:\u00a0 &#8211; DNS ch\u00ednh: 8.8.8.8\u00a0 &#8211; DNS d\u1ef1 ph\u00f2ng: 8.8.4.4<\/li><li><strong>L\u01b0u thay \u0111\u1ed5i:<\/strong>&#8211; Nh\u1ea5p v\u00e0o n\u00fat &#8220;L\u01b0u&#8221;, &#8220;\u00c1p d\u1ee5ng&#8221; ho\u1eb7c &#8220;C\u1eadp nh\u1eadt&#8221; \u0111\u1ec3 l\u01b0u c\u00e0i \u0111\u1eb7t m\u1edbi.- Router c\u00f3 th\u1ec3 y\u00eau c\u1ea7u kh\u1edfi \u0111\u1ed9ng l\u1ea1i, h\u00e3y cho ph\u00e9p qu\u00e1 tr\u00ecnh n\u00e0y ho\u00e0n t\u1ea5t.<\/li><li><strong>X\u00e1c minh c\u00e0i \u0111\u1eb7t:<\/strong>&#8211; Sau khi router kh\u1edfi \u0111\u1ed9ng l\u1ea1i, t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng c\u1ee7a b\u1ea1n s\u1ebd t\u1ef1 \u0111\u1ed9ng s\u1eed d\u1ee5ng Google DNS 8.8.8.8.- B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra b\u1eb1ng c\u00e1ch truy c\u1eadp trang web nh\u01b0 dns.google.com t\u1eeb m\u1ed9t thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi router.<\/li><\/ul><p>L\u01b0u \u00fd r\u1eb1ng giao di\u1ec7n qu\u1ea3n l\u00fd router c\u00f3 th\u1ec3 kh\u00e1c nhau \u0111\u00e1ng k\u1ec3 gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t. N\u1ebfu b\u1ea1n g\u1eb7p kh\u00f3 kh\u0103n, h\u00e3y tham kh\u1ea3o t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3 cho model router c\u1ee7a b\u1ea1n ho\u1eb7c t\u00ecm ki\u1ebfm h\u01b0\u1edbng d\u1eabn tr\u1ef1c tuy\u1ebfn v\u1edbi t\u1eeb kh\u00f3a &#8220;c\u00e0i \u0111\u1eb7t DNS tr\u00ean [t\u00ean model router]&#8221;.<\/p><h2><span class=\"ez-toc-section\" id=\"4_So_sanh_Google_Public_DNS_voi_cac_DNS_pho_bien_khac\"><\/span>4. So s\u00e1nh Google Public DNS v\u1edbi c\u00e1c DNS ph\u1ed5 bi\u1ebfn kh\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"41_So_sanh_Google_Public_DNS_va_Cloudflare_DNS\"><\/span>4.1 So s\u00e1nh Google Public DNS v\u00e0 Cloudflare DNS<span class=\"ez-toc-section-end\"><\/span><\/h3><table style=\"border-collapse: collapse; width: 100%; height: 239px;\">\n<tbody>\n<tr style=\"height: 50px;\">\n<td style=\"width: 33.3333%; height: 50px;\">\n<p style=\"text-align: center;\"><strong>Ti\u00eau ch\u00ed<\/strong><\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 50px; text-align: center;\"><strong>Google Public DNS<\/strong><\/td>\n<td style=\"width: 33.3333%; height: 50px; text-align: center;\"><strong>Cloudflare DNS (1.1.1.1)<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>\u0110\u1ecba ch\u1ec9 DNS<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>8.8.8.8 v\u00e0 8.8.4.4<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>1.1.1.1 v\u00e0 1.0.0.1<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Hi\u1ec7u n\u0103ng (t\u1ed1c \u0111\u1ed9)<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Nhanh, \u1ed5n \u0111\u1ecbnh to\u00e0n c\u1ea7u<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Th\u01b0\u1eddng nhanh h\u01a1n \u1edf nhi\u1ec1u khu v\u1ef1c<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Ch\u00ednh s\u00e1ch quy\u1ec1n ri\u00eang t\u01b0<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Ghi nh\u1eadt k\u00fd t\u1ea1m th\u1eddi (x\u00f3a sau 24-48h)<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Kh\u00f4ng l\u01b0u nh\u1eadt k\u00fd IP truy v\u1ea5n<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>M\u00e3 ngu\u1ed3n m\u1edf<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p><span style=\"font-weight: 400;\">Kh\u00f4ng<\/span><\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>C\u00f3 (m\u1ed9t ph\u1ea7n &#8211; h\u1ed7 tr\u1ee3 DNS qua HTTPS, DoH)<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>DNS-over-HTTPS (DoH)<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">H\u1ed7 tr\u1ee3<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">H\u1ed7 tr\u1ee3<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>DNS-over-TLS (DoT)<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">H\u1ed7 tr\u1ee3<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">H\u1ed7 tr\u1ee3<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>M\u1ee5c ti\u00eau ch\u00ednh<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>C\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m truy c\u1eadp DNS cho ng\u01b0\u1eddi d\u00f9ng Google v\u00e0 internet to\u00e0n c\u1ea7u<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>\u01afu ti\u00ean t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt, \u0111\u1eb7c bi\u1ec7t nh\u1ea5n m\u1ea1nh quy\u1ec1n ri\u00eang t\u01b0<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>H\u1ee3p t\u00e1c ph\u00e1t tri\u1ec3n<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>N\u1ed9i b\u1ed9 c\u1ee7a Google<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>H\u1ee3p t\u00e1c v\u1edbi APNIC \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u1ea3i thi\u1ec7n Internet<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 21px;\">\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Kh\u1ea3 n\u0103ng tu\u1ef3 ch\u1ec9nh<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>Kh\u00f4ng d\u00e0nh cho ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n<\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 21px;\">\n<p>C\u00f3 app (1.1.1.1) cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng, d\u1ec5 s\u1eed d\u1ee5ng<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><p>N\u1ebfu b\u1ea1n l\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng, Cloudflare DNS l\u00e0 l\u1ef1a ch\u1ecdn nhanh v\u00e0 an to\u00e0n h\u01a1n. C\u00f2n n\u1ebfu b\u1ea1n l\u00e0m vi\u1ec7c trong m\u00f4i tr\u01b0\u1eddng k\u1ef9 thu\u1eadt ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c s\u1ea3n ph\u1ea9m g\u1eafn b\u00f3 v\u1edbi Google, Google DNS v\u1eabn l\u00e0 m\u1ed9t ph\u01b0\u01a1ng \u00e1n r\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p><h3><span class=\"ez-toc-section\" id=\"42_So_sanh_Google_Public_DNS_va_OpenDNS\"><\/span>4.2 So s\u00e1nh Google Public DNS v\u00e0 OpenDNS<span class=\"ez-toc-section-end\"><\/span><\/h3><table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr style=\"height: 50px;\">\n<td style=\"width: 33.3333%; height: 50px;\">\n<p style=\"text-align: center;\"><strong>Ti\u00eau ch\u00ed<\/strong><\/p>\n<\/td>\n<td style=\"width: 33.3333%; height: 50px; text-align: center;\"><strong>Google Public DNS<\/strong><\/td>\n<td style=\"width: 33.3333%; height: 50px; text-align: center;\"><strong>Cloudflare DNS (1.1.1.1)<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>\u0110\u1ecba ch\u1ec9 DNS<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>8.8.8.8 v\u00e0 8.8.4.4<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>208.67.222.222 v\u00e0 208.67.220.220<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>Hi\u1ec7u n\u0103ng &amp; \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>Nhanh, \u1ed5n \u0111\u1ecbnh to\u00e0n c\u1ea7u<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>\u1ed4n \u0111\u1ecbnh, c\u00f3 m\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n r\u1ed9ng<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>Ch\u00ednh s\u00e1ch quy\u1ec1n ri\u00eang t\u01b0<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>Ghi nh\u1eadt k\u00fd truy v\u1ea5n DNS ng\u1eafn h\u1ea1n (x\u00f3a sau 24\u201348h)<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u00f3 th\u1ec3 l\u01b0u nh\u1eadt k\u00fd chi ti\u1ebft \u0111\u1ec3 qu\u1ea3n l\u00fd n\u1ed9i dung<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>DNS-over-HTTPS\/TLS (DoH\/DoT)<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u00f3 h\u1ed7 tr\u1ee3<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>Kh\u00f4ng h\u1ed7 tr\u1ee3 (t\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m 2024)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>T\u00ednh n\u0103ng l\u1ecdc n\u1ed9i dung<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>Kh\u00f4ng h\u1ed7 tr\u1ee3<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u00f3 (ch\u1eb7n web \u0111en, web \u0111\u1ed9c h\u1ea1i, tu\u1ef3 ch\u1ec9nh)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>B\u1ea3o v\u1ec7 ch\u1ed1ng malware\/phishing<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>Kh\u00f4ng t\u00edch h\u1ee3p<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u00f3 (ch\u1eb7n website l\u1eeba \u0111\u1ea3o, \u0111\u1ed9c h\u1ea1i)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>Kh\u1ea3 n\u0103ng tu\u1ef3 bi\u1ebfn<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">Kh\u00f4ng<\/td>\n<td style=\"width: 33.3333%;\">\n<p>Cao (T\u00f9y ch\u1ec9nh ch\u1eb7n n\u1ed9i dung, th\u1ed1ng k\u00ea, v.v.)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>T\u00edch h\u1ee3p doanh nghi\u1ec7p\/tr\u01b0\u1eddng h\u1ecdc<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">Kh\u00f4ng<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u00f3 g\u00f3i ri\u00eang cho doanh nghi\u1ec7p v\u00e0 gi\u00e1o d\u1ee5c<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>Giao di\u1ec7n qu\u1ea3n l\u00fd<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">Kh\u00f4ng c\u00f3<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u00f3 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n tr\u1ecb<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 33.3333%;\">\n<p>M\u1ee5c ti\u00eau s\u1eed d\u1ee5ng<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>C\u1ea3i thi\u1ec7n truy v\u1ea5n DNS c\u00f4ng c\u1ed9ng to\u00e0n c\u1ea7u<\/p>\n<\/td>\n<td style=\"width: 33.3333%;\">\n<p>B\u1ea3o m\u1eadt, ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd truy c\u1eadp Internet<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><p>Google Public DNS ph\u00f9 h\u1ee3p cho ng\u01b0\u1eddi d\u00f9ng ph\u1ed5 th\u00f4ng mu\u1ed1n c\u00f3 DNS nhanh, an to\u00e0n c\u01a1 b\u1ea3n m\u00e0 kh\u00f4ng c\u1ea7n t\u00f9y ch\u1ec9nh g\u00ec th\u00eam. Trong kh\u00ed \u0111\u00f3, OpenDNS ph\u00f9 h\u1ee3p v\u1edbi gia \u0111\u00ecnh, doanh nghi\u1ec7p, tr\u01b0\u1eddng h\u1ecdc ho\u1eb7c nh\u1eefng ai mu\u1ed1n ki\u1ec3m so\u00e1t n\u1ed9i dung truy c\u1eadp Internet (v\u00ed d\u1ee5: ch\u1eb7n web \u0111en, web \u0111\u1ed9c h\u1ea1i). Tuy nhi\u00ean, n\u00f3 kh\u00f4ng h\u1ed7 tr\u1ee3 DoH\/DoT, n\u00ean h\u01a1i h\u1ea1n ch\u1ebf v\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt \u1ea9n danh so v\u1edbi c\u00e1c DNS hi\u1ec7n \u0111\u1ea1i nh\u01b0 Cloudflare.<\/p><h2><span class=\"ez-toc-section\" id=\"5_Nhung_cau_hoi_thuong_gap_ve_Google_Public_DNS\"><\/span>5. Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Google Public DNS<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"51_Google_Public_DNS_co_mien_phi_khong\"><\/span>5.1 Google Public DNS c\u00f3 mi\u1ec5n ph\u00ed kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>C\u00f3, Google Public DNS l\u00e0 d\u1ecbch v\u1ee5 ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed. Google cung c\u1ea5p d\u1ecbch v\u1ee5 n\u00e0y cho t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng Internet m\u00e0 kh\u00f4ng t\u00ednh ph\u00ed. Kh\u00f4ng c\u00f3 g\u00f3i tr\u1ea3 ph\u00ed hay t\u00ednh n\u0103ng cao c\u1ea5p &#8211; t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u c\u00f3 quy\u1ec1n truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 v\u00e0o d\u1ecbch v\u1ee5 v\u1edbi \u0111\u1ea7y \u0111\u1ee7 ch\u1ee9c n\u0103ng. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n trong n\u1ed7 l\u1ef1c c\u1ee7a Google nh\u1eb1m c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m Internet to\u00e0n c\u1ea7u.<\/p><h3><span class=\"ez-toc-section\" id=\"52_Viec_su_dung_Google_Public_DNS_co_an_toan_khong\"><\/span>5.2 Vi\u1ec7c s\u1eed d\u1ee5ng Google Public DNS c\u00f3 an to\u00e0n kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>C\u00f3, s\u1eed d\u1ee5ng Google Public DNS \u0111\u01b0\u1ee3c coi l\u00e0 an to\u00e0n v\u00e0 th\u1ef1c t\u1ebf c\u00f2n c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n b\u1ea3o m\u1eadt khi l\u01b0\u1edbt web c\u1ee7a b\u1ea1n. Google \u00e1p d\u1ee5ng nhi\u1ec1u bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt ti\u00ean ti\u1ebfn nh\u01b0 DNSSEC \u0111\u1ec3 x\u00e1c th\u1ef1c ph\u1ea3n h\u1ed3i DNS, DNS over HTTPS v\u00e0 DNS over TLS \u0111\u1ec3 m\u00e3 h\u00f3a truy v\u1ea5n DNS. D\u1ecbch v\u1ee5 c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn nh\u01b0 DNS cache poisoning. Google c\u0169ng th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng \u0111\u1ec3 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi.<\/p><h3><span class=\"ez-toc-section\" id=\"53_Google_Public_DNS_co_hoat_dong_voi_IPv6_khong\"><\/span>5.3 Google Public DNS c\u00f3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi IPv6 kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>C\u00f3, Google Public DNS h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 IPv6. N\u1ebfu b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng Google Public DNS v\u1edbi IPv6, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecba ch\u1ec9 IPv6 sau: 2001:4860:4860::8888 v\u00e0 2001:4860:4860::8844. Nh\u1eefng \u0111\u1ecba ch\u1ec9 n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi \u0111\u1ecba ch\u1ec9 IPv4 8.8.8.8 v\u00e0 8.8.4.4. S\u1eed d\u1ee5ng Google DNS v\u1edbi IPv6 c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n k\u1ebft n\u1ed1i \u0111\u1ebfn c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 s\u1eed d\u1ee5ng IPv6, \u0111\u1eb7c bi\u1ec7t khi c\u00e0ng nhi\u1ec1u n\u1ed9i dung web chuy\u1ec3n sang h\u1ed7 tr\u1ee3 giao th\u1ee9c n\u00e0y.<\/p><h3><span class=\"ez-toc-section\" id=\"54_Google_Public_DNS_co_theo_doi_lich_su_duyet_web_cua_toi_khong\"><\/span>5.4 Google Public DNS c\u00f3 theo d\u00f5i l\u1ecbch s\u1eed duy\u1ec7t web c\u1ee7a t\u00f4i kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Google Public DNS kh\u00f4ng theo d\u00f5i n\u1ed9i dung b\u1ea1n truy c\u1eadp ho\u1eb7c l\u01b0u l\u1ea1i l\u1ecbch s\u1eed duy\u1ec7t web \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n. Tuy nhi\u00ean, d\u1ecbch v\u1ee5 n\u00e0y c\u00f3 thu th\u1eadp m\u1ed9t s\u1ed1 th\u00f4ng tin t\u1ea1m th\u1eddi nh\u1eb1m m\u1ee5c \u0111\u00edch ch\u1ea9n \u0111o\u00e1n v\u00e0 c\u1ea3i thi\u1ec7n d\u1ecbch v\u1ee5, bao g\u1ed3m \u0111\u1ecba ch\u1ec9 IP c\u1ee7a b\u1ea1n. Google l\u01b0u gi\u1eef \u0111\u1ecba ch\u1ec9 IP \u0111\u1ea7y \u0111\u1ee7 trong kho\u1ea3ng 24-48 gi\u1edd, sau \u0111\u00f3 ch\u1ec9 gi\u1eef l\u1ea1i m\u1ed9t ph\u1ea7n \u0111\u1ecba ch\u1ec9 IP \u0111\u1ec3 ph\u00e2n t\u00edch th\u1ed1ng k\u00ea. Google c\u00f3 ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch h\u1ecd x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1eeb Google Public DNS.<\/p><h3><span class=\"ez-toc-section\" id=\"55_Toc_do_Internet_cua_toi_co_thuc_su_tang_khi_su_dung_Google_Public_DNS_khong\"><\/span>5.5 T\u1ed1c \u0111\u1ed9 Internet c\u1ee7a t\u00f4i c\u00f3 th\u1ef1c s\u1ef1 t\u0103ng khi s\u1eed d\u1ee5ng Google Public DNS kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, s\u1eed d\u1ee5ng Google Public DNS c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 duy\u1ec7t web, \u0111\u1eb7c bi\u1ec7t n\u1ebfu DNS m\u1eb7c \u0111\u1ecbnh c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) c\u1ee7a b\u1ea1n ch\u1eadm ho\u1eb7c qu\u00e1 t\u1ea3i. Tuy nhi\u00ean, m\u1ee9c \u0111\u1ed9 c\u1ea3i thi\u1ec7n s\u1ebd ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a b\u1ea1n, nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet, v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a d\u1ecbch v\u1ee5 DNS m\u1eb7c \u0111\u1ecbnh. M\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng b\u00e1o c\u00e1o c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3, trong khi nh\u1eefng ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 kh\u00f4ng nh\u1eadn th\u1ea5y kh\u00e1c bi\u1ec7t l\u1edbn. B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng th\u1eed nghi\u1ec7m v\u00e0 quay l\u1ea1i c\u00e0i \u0111\u1eb7t c\u0169 n\u1ebfu kh\u00f4ng th\u1ea5y c\u1ea3i thi\u1ec7n.<\/p><p>Google Public DNS \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng d\u1ecbch v\u1ee5 DNS c\u00f4ng c\u1ed9ng ph\u1ed5 bi\u1ebfn nh\u1ea5t th\u1ebf gi\u1edbi, mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3 cho ng\u01b0\u1eddi d\u00f9ng Internet. Google Public DNS l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi cho h\u1ea7u h\u1ebft ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng mu\u1ed1n c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady khi duy\u1ec7t web. Vi\u1ec7c thi\u1ebft l\u1eadp r\u1ea5t \u0111\u01a1n gi\u1ea3n &#8211; b\u1ea1n ch\u1ec9 c\u1ea7n nh\u1edb hai \u0111\u1ecba ch\u1ec9 IP d\u1ec5 nh\u1edb (8.8.8.8 v\u00e0 8.8.4.4) v\u00e0 thay \u0111\u1ed5i m\u1ed9t s\u1ed1 c\u00e0i \u0111\u1eb7t c\u01a1 b\u1ea3n tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh. Kh\u00f4ng c\u1ea7n t\u00e0i kho\u1ea3n, kh\u00f4ng c\u1ea7n \u0111\u0103ng k\u00fd v\u00e0 ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed.<\/p><p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Google Public DNS l\u00e0 d\u1ecbch v\u1ee5 DNS mi\u1ec5n ph\u00ed gi\u00fap c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 truy c\u1eadp internet v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt cho ng\u01b0\u1eddi d\u00f9ng. V\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1nh m\u1ebd, d\u1ecbch v\u1ee5 n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap duy\u1ec7t web nhanh ch\u00f3ng m\u00e0 c\u00f2n b\u1ea3o v\u1ec7 b\u1ea1n kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda tr\u00ean m\u1ea1ng. B\u00e0i&#8230;<\/p>\n","protected":false},"author":9,"featured_media":24375,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[210],"tags":[],"class_list":["post-24270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-google"],"_links":{"self":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts\/24270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/comments?post=24270"}],"version-history":[{"count":5,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts\/24270\/revisions"}],"predecessor-version":[{"id":24479,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts\/24270\/revisions\/24479"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/media\/24375"}],"wp:attachment":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/media?parent=24270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/categories?post=24270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/tags?post=24270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}