{"id":35726,"date":"2025-11-08T13:55:08","date_gmt":"2025-11-08T06:55:08","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=35726"},"modified":"2025-11-08T13:56:09","modified_gmt":"2025-11-08T06:56:09","slug":"fqdn-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/","title":{"rendered":"FQDN l\u00e0 g\u00ec? To\u00e0n t\u1eadp v\u1ec1 Fully Qualified Domain Name (A-Z)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<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>\n<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:\/\/interdata.vn\/blog\/fqdn-la-gi\/#FQDN-la-gi\" >FQDN l\u00e0 g\u00ec?<\/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:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Cau-truc-cua-mot-FQDN\" >C\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t FQDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Vi-du-thuc-te-ve-Fully-Qualified-Domain-Name\" >V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 Fully Qualified Domain Name<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Tai-sao-FQDN-lai-quan-trong\" >T\u1ea1i sao FQDN l\u1ea1i quan tr\u1ecdng?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Yeu-to-bat-buoc-de-cai-dat-chung-chi-SSLTLS\" >Y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c \u0111\u1ec3 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL\/TLS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Ket-noi-den-cac-may-chu-tu-xa-Remote-Host\" >K\u1ebft n\u1ed1i \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 t\u1eeb xa (Remote Host)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Dinh-danh-cho-cac-dich-vu-mang-Email-Database\" >\u0110\u1ecbnh danh cho c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng (Email, Database)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Phan-biet-FQDN-va-PQDN-Hostname\" >Ph\u00e2n bi\u1ec7t FQDN v\u00e0 PQDN (Hostname)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#FQDN-khac-gi-so-voi-Domain-thong-thuong\" >FQDN kh\u00e1c g\u00ec so v\u1edbi Domain th\u00f4ng th\u01b0\u1eddng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#FQDN-duoc-ung-dung-pho-bien-nhu-the-nao\" >FQDN \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u01b0 th\u1ebf n\u00e0o?<\/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:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Truy-cap-website\" >Truy c\u1eadp website<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Email\" >Email<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Cau-hinh-mang\" >C\u1ea5u h\u00ecnh m\u1ea1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Bao-mat\" >B\u1ea3o m\u1eadt<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Truong-hop-nen-su-dung-FQDN\" >Tr\u01b0\u1eddng h\u1ee3p n\u00ean s\u1eed d\u1ee5ng FQDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Cac-tieu-chuan-ky-thuat-khi-tao-mot-FQDN\" >C\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt khi t\u1ea1o m\u1ed9t FQDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Cach-su-dung-FQDN-trong-mang-va-web\" >C\u00e1ch s\u1eed d\u1ee5ng FQDN trong m\u1ea1ng v\u00e0 web<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/#Cach-tim-FQDN-tren-may-tinh-cua-ban-Windows-MacOS-Linux\" >C\u00e1ch t\u00ecm FQDN tr\u00ean m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n (Windows, MacOS, Linux)<\/a><\/li><\/ul><\/nav><\/div>\n<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o m\u00e0 h\u00e0ng t\u1ef7 m\u00e1y t\u00ednh tr\u00ean Internet c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y nhau m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c m\u00e0 kh\u00f4ng h\u1ec1 nh\u1ea7m l\u1eabn? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf m\u1ed9t kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng nh\u01b0ng c\u1ef1c k\u1ef3 quan tr\u1ecdng: <strong>FQDN &#8211; Fully Qualified Domain Name<\/strong>. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt kh\u00f4 khan, m\u00e0 l\u00e0 chi\u1ebfc ch\u00eca kh\u00f3a \u0111\u1ecbnh danh tuy\u1ec7t \u0111\u1ed1i cho m\u1ecdi t\u00e0i nguy\u00ean tr\u00ean m\u1ea1ng.<\/p>\n<p>Trong b\u00e0i vi\u1ebft n\u00e0y, InterData s\u1ebd c\u00f9ng b\u1ea1n \u0111i t\u1eeb \u0111\u1ecbnh ngh\u0129a <a href=\"https:\/\/interdata.vn\/blog\/fqdn-la-gi\/\"><strong>FQDN l\u00e0 g\u00ec<\/strong><\/a>, ph\u00e2n t\u00edch c\u1ea5u tr\u00fac, vai tr\u00f2 c\u1ee7a FQDN trong b\u1ea3o m\u1eadt SSL, Email,&#8230; c\u00e1ch ph\u00e2n bi\u1ec7t FQDN v\u1edbi domain th\u00f4ng th\u01b0\u1eddng, cho \u0111\u1ebfn c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt khi t\u1ea1o m\u1ed9t FQDN, gi\u00fap b\u1ea1n l\u00e0m ch\u1ee7 ho\u00e0n to\u00e0n kh\u00e1i ni\u1ec7m n\u00e0y.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FQDN-la-gi\"><\/span><strong> FQDN l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>FQDN l\u00e0 g\u00ec?<\/strong>\u00a0FQDN (vi\u1ebft t\u1eaft c\u1ee7a Fully Qualified Domain Name &#8211; T\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n) l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 \u0111\u1ea7y \u0111\u1ee7 v\u00e0 duy nh\u1ea5t, ch\u1ec9 \u0111\u1ecbnh v\u1ecb tr\u00ed ch\u00ednh x\u00e1c c\u1ee7a m\u1ed9t m\u00e1y t\u00ednh ho\u1eb7c m\u00e1y ch\u1ee7 c\u1ee5 th\u1ec3 tr\u00ean m\u1ea1ng Internet.<\/p>\n<figure id=\"attachment_35728\" aria-describedby=\"caption-attachment-35728\" style=\"width: 935px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35728\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-la-gi.png\" alt=\"FQDN l\u00e0 g\u00ec?\" width=\"935\" height=\"526\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-la-gi.png 935w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-la-gi-300x169.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-la-gi-768x432.png 768w\" sizes=\"auto, (max-width: 935px) 100vw, 935px\" \/><figcaption id=\"caption-attachment-35728\" class=\"wp-caption-text\">FQDN l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng Internet l\u00e0 m\u1ed9t th\u00e0nh ph\u1ed1 kh\u1ed5ng l\u1ed3. N\u1ebfu &#8220;Hostname&#8221; (t\u00ean m\u00e1y ch\u1ee7) nh\u01b0 mail hay www ch\u1ec9 l\u00e0 s\u1ed1 nh\u00e0, th\u00ec FQDN gi\u1ed1ng nh\u01b0 \u0111\u1ecba ch\u1ec9 \u0111\u1ea7y \u0111\u1ee7 bao g\u1ed3m c\u1ea3 s\u1ed1 nh\u00e0, t\u00ean \u0111\u01b0\u1eddng, ph\u01b0\u1eddng, qu\u1eadn v\u00e0 th\u00e0nh ph\u1ed1: mail.google.com.<\/p>\n<p>Nh\u1edd c\u00f3 \u0111\u1ecba ch\u1ec9 \u0111\u1ea7y \u0111\u1ee7 n\u00e0y, h\u1ec7 th\u1ed1ng DNS (Domain Name System) c\u00f3 th\u1ec3 ph\u00e2n gi\u1ea3i v\u00e0 t\u00ecm ra ch\u00ednh x\u00e1c m\u00e1y ch\u1ee7 b\u1ea1n c\u1ea7n truy c\u1eadp m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 s\u1ef1 m\u01a1 h\u1ed3 n\u00e0o. \u0110\u1eb7c t\u00ednh quan tr\u1ecdng nh\u1ea5t c\u1ee7a FQDN l\u00e0 t\u00ednh <strong>tuy\u1ec7t \u0111\u1ed1i<\/strong> v\u00e0 <strong>duy nh\u1ea5t<\/strong> tr\u00ean to\u00e0n c\u1ea7u. Kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i hai FQDN ho\u00e0n to\u00e0n gi\u1ed1ng nhau tr\u00ean Internet. \u0110\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n <strong>FQDN l\u00e0 g\u00ec<\/strong>, ch\u00fang ta c\u1ea7n ph\u00e2n t\u00edch c\u1ea5u tr\u00fac c\u1ee7a n\u00f3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cau-truc-cua-mot-FQDN\"><\/span><strong>C\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t FQDN<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t FQDN \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb nhi\u1ec1u ph\u1ea7n, ng\u0103n c\u00e1ch b\u1edfi d\u1ea5u ch\u1ea5m, tu\u00e2n theo m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p ch\u1eb7t ch\u1ebd. C\u1ea5u tr\u00fac chung c\u1ee7a n\u00f3 l\u00e0:<\/p>\n<p><strong>[Hostname].[Domain Name].[TLD].<\/strong><\/p>\n<p>Ch\u00fang ta h\u00e3y c\u00f9ng m\u1ed5 x\u1ebb FQDN www.interdata.vn. \u0111\u1ec3 l\u00e0m r\u00f5 t\u1eebng th\u00e0nh ph\u1ea7n:<\/p>\n<ul>\n<li><strong>Hostname (T\u00ean m\u00e1y ch\u1ee7):<\/strong> L\u00e0 ph\u1ea7n \u0111\u1ee9ng \u0111\u1ea7u ti\u00ean, www trong v\u00ed d\u1ee5. Hostname d\u00f9ng \u0111\u1ec3 \u0111\u1eb7t t\u00ean cho m\u1ed9t m\u00e1y t\u00ednh ho\u1eb7c m\u1ed9t d\u1ecbch v\u1ee5 c\u1ee5 th\u1ec3 trong m\u1ed9t domain. M\u1ed9t s\u1ed1 hostname ph\u1ed5 bi\u1ebfn kh\u00e1c l\u00e0 mail (cho m\u00e1y ch\u1ee7 email), ftp (cho m\u00e1y ch\u1ee7 FTP), shop (cho trang b\u00e1n h\u00e0ng).<\/li>\n<li><strong>Domain Name (T\u00ean mi\u1ec1n):<\/strong> L\u00e0 ph\u1ea7n \u1edf gi\u1eefa, interdata trong v\u00ed d\u1ee5. \u0110\u00e2y l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p hai (Second-Level Domain), th\u01b0\u1eddng l\u00e0 t\u00ean c\u1ee7a t\u1ed5 ch\u1ee9c, th\u01b0\u01a1ng hi\u1ec7u ho\u1eb7c c\u00e1 nh\u00e2n s\u1edf h\u1eefu.<\/li>\n<li><strong>TLD (Top-Level Domain &#8211; T\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t):<\/strong> L\u00e0 ph\u1ea7n cu\u1ed1i c\u00f9ng, vn trong v\u00ed d\u1ee5. TLD c\u00f3 th\u1ec3 l\u00e0 t\u00ean mi\u1ec1n qu\u1ed1c gia (.vn, .us, .jp) ho\u1eb7c t\u00ean mi\u1ec1n chung (.com, .net, .org).<\/li>\n<li><strong>D\u1ea5u ch\u1ea5m \u1edf cu\u1ed1i c\u00f9ng (.)<\/strong>: Nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng b\u1ecf qua d\u1ea5u ch\u1ea5m n\u00e0y, nh\u01b0ng v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, m\u1ed9t FQDN ho\u00e0n ch\u1ec9nh lu\u00f4n k\u1ebft th\u00fac b\u1eb1ng m\u1ed9t d\u1ea5u ch\u1ea5m. D\u1ea5u ch\u1ea5m n\u00e0y \u0111\u1ea1i di\u1ec7n cho &#8220;root&#8221; &#8211; th\u01b0 m\u1ee5c g\u1ed1c c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n DNS. Khi b\u1ea1n g\u00f5 FQDN tr\u00ean tr\u00ecnh duy\u1ec7t, tr\u00ecnh duy\u1ec7t s\u1ebd t\u1ef1 \u0111\u1ed9ng th\u00eam d\u1ea5u ch\u1ea5m n\u00e0y v\u00e0o.<\/li>\n<\/ul>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac n\u00e0y l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi <strong>FQDN l\u00e0 g\u00ec<\/strong> m\u1ed9t c\u00e1ch to\u00e0n di\u1ec7n.<\/p>\n<figure id=\"attachment_35734\" aria-describedby=\"caption-attachment-35734\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35734\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cau-truc-co-ban-cua-FQDN.jpg\" alt=\"C\u1ea5u tr\u00fac c\u01a1 b\u1ea3n c\u1ee7a FQDN\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cau-truc-co-ban-cua-FQDN.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cau-truc-co-ban-cua-FQDN-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cau-truc-co-ban-cua-FQDN-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35734\" class=\"wp-caption-text\">C\u1ea5u tr\u00fac c\u01a1 b\u1ea3n c\u1ee7a FQDN<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Vi-du-thuc-te-ve-Fully-Qualified-Domain-Name\"><\/span><strong>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 Fully Qualified Domain Name<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh FQDN xu\u1ea5t hi\u1ec7n \u1edf kh\u1eafp m\u1ecdi n\u01a1i tr\u00ean Internet. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i v\u00ed d\u1ee5 quen thu\u1ed9c \u0111\u1ec3 b\u1ea1n d\u1ec5 h\u00ecnh dung:<\/p>\n<ul>\n<li><strong>FQDN c\u1ee7a m\u1ed9t trang web:<\/strong> www.google.com &#8211; \u1ede \u0111\u00e2y, www l\u00e0 hostname c\u1ee7a m\u00e1y ch\u1ee7 web thu\u1ed9c t\u00ean mi\u1ec1n google.com.<\/li>\n<li><strong>FQDN c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7 email:<\/strong> mail.interdata.vn &#8211; \u0110\u00e2y l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a m\u00e1y ch\u1ee7 x\u1eed l\u00fd email cho t\u00ean mi\u1ec1n interdata.vn.<\/li>\n<li><strong>FQDN c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef m\u00e3 ngu\u1ed3n m\u1edf:<\/strong> github.com &#8211; Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, github.com v\u1eeba l\u00e0 t\u00ean mi\u1ec1n, v\u1eeba l\u00e0 m\u1ed9t FQDN tr\u1ecf \u0111\u1ebfn m\u00e1y ch\u1ee7 web ch\u00ednh c\u1ee7a h\u1ecd.<\/li>\n<li><strong>FQDN c\u1ee7a m\u1ed9t API endpoint:<\/strong> api.weather.com &#8211; C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n th\u01b0\u1eddng d\u00f9ng FQDN n\u00e0y \u0111\u1ec3 g\u1eedi y\u00eau c\u1ea7u v\u00e0 nh\u1eadn d\u1eef li\u1ec7u th\u1eddi ti\u1ebft.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-FQDN-lai-quan-trong\"><\/span><strong>T\u1ea1i sao FQDN l\u1ea1i quan tr\u1ecdng?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>FQDN kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00e1i t\u00ean. Vai tr\u00f2 c\u1ee7a FQDN l\u00e0 n\u1ec1n t\u1ea3ng cho s\u1ef1 \u1ed5n \u0111\u1ecbnh, an to\u00e0n v\u00e0 ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c c\u1ee7a r\u1ea5t nhi\u1ec1u d\u1ecbch v\u1ee5 tr\u00ean Internet. N\u1ebfu kh\u00f4ng c\u00f3 FQDN, vi\u1ec7c giao ti\u1ebfp tr\u00ean m\u1ea1ng s\u1ebd tr\u1edf n\u00ean h\u1ed7n lo\u1ea1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Yeu-to-bat-buoc-de-cai-dat-chung-chi-SSLTLS\"><\/span><strong>Y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c \u0111\u1ec3 c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL\/TLS<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi b\u1ea1n truy c\u1eadp m\u1ed9t trang web c\u00f3 https:\/\/, k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n \u0111ang \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1edfi ch\u1ee9ng ch\u1ec9 SSL\/TLS. \u0110\u1ec3 c\u00e0i \u0111\u1eb7t \u0111\u01b0\u1ee3c ch\u1ee9ng ch\u1ec9 n\u00e0y, b\u1ea1n ph\u1ea3i cung c\u1ea5p m\u1ed9t FQDN.<\/p>\n<p>C\u00e1c T\u1ed5 ch\u1ee9c ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 (Certificate Authorities &#8211; CA) nh\u01b0 Let&#8217;s Encrypt hay DigiCert s\u1ebd x\u00e1c th\u1ef1c quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n v\u00e0 c\u1ea5p ch\u1ee9ng ch\u1ec9 cho FQDN c\u1ee5 th\u1ec3 \u0111\u00f3 (v\u00ed d\u1ee5: www.interdata.vn). Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp, tr\u00ecnh duy\u1ec7t s\u1ebd ki\u1ec3m tra xem FQDN tr\u00ean thanh \u0111\u1ecba ch\u1ec9 c\u00f3 kh\u1edbp v\u1edbi FQDN trong ch\u1ee9ng ch\u1ec9 hay kh\u00f4ng.<\/p>\n<p>N\u1ebfu kh\u00f4ng kh\u1edbp, tr\u00ecnh duy\u1ec7t s\u1ebd ngay l\u1eadp t\u1ee9c hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o b\u1ea3o m\u1eadt, l\u00e0m gi\u1ea3m uy t\u00edn c\u1ee7a trang web v\u00e0 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng lo l\u1eafng. Do \u0111\u00f3, s\u1eed d\u1ee5ng FQDN ch\u00ednh x\u00e1c l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho website.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ket-noi-den-cac-may-chu-tu-xa-Remote-Host\"><\/span><strong>K\u1ebft n\u1ed1i \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 t\u1eeb xa (Remote Host)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p l\u1edbn, c\u00f3 th\u1ec3 c\u00f3 h\u00e0ng tr\u0103m, th\u1eadm ch\u00ed h\u00e0ng ng\u00e0n m\u00e1y ch\u1ee7. Vi\u1ec7c \u0111\u1eb7t t\u00ean m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 b\u1ecb tr\u00f9ng l\u1eb7p gi\u1eefa c\u00e1c ph\u00f2ng ban. V\u00ed d\u1ee5, ph\u00f2ng k\u1ebf to\u00e1n c\u00f3 m\u00e1y ch\u1ee7 t\u00ean database, v\u00e0 ph\u00f2ng nh\u00e2n s\u1ef1 c\u0169ng c\u00f3 m\u1ed9t m\u00e1y ch\u1ee7 t\u00ean database.<\/p>\n<p>N\u1ebfu ch\u1ec9 d\u00f9ng hostname database \u0111\u1ec3 k\u1ebft n\u1ed1i, b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 bi\u1ebft m\u00ecnh \u0111ang truy c\u1eadp v\u00e0o m\u00e1y ch\u1ee7 n\u00e0o. Nh\u01b0ng v\u1edbi FQDN, m\u1ecdi th\u1ee9 tr\u1edf n\u00ean r\u00f5 r\u00e0ng:<\/p>\n<ul>\n<li>database.ketoan.interdata.vn<\/li>\n<li>database.nhansu.interdata.vn<\/li>\n<\/ul>\n<p>FQDN \u0111\u1ea3m b\u1ea3o c\u00e1c k\u1ebft n\u1ed1i t\u1eeb xa th\u00f4ng qua c\u00e1c giao th\u1ee9c nh\u01b0 SSH (Secure Shell), RDP (Remote Desktop Protocol), hay FTP (File Transfer Protocol) lu\u00f4n \u0111i \u0111\u1ebfn \u0111\u00fang \u0111\u00edch.<\/p>\n<figure id=\"attachment_35729\" aria-describedby=\"caption-attachment-35729\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35729\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Tai-sao-FQDN-lai-quan-trong.jpg\" alt=\"T\u1ea1i sao FQDN l\u1ea1i quan tr\u1ecdng?\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Tai-sao-FQDN-lai-quan-trong.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Tai-sao-FQDN-lai-quan-trong-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Tai-sao-FQDN-lai-quan-trong-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35729\" class=\"wp-caption-text\">T\u1ea1i sao FQDN l\u1ea1i quan tr\u1ecdng?<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Dinh-danh-cho-cac-dich-vu-mang-Email-Database\"><\/span><strong>\u0110\u1ecbnh danh cho c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng (Email, Database)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u1ec7 th\u1ed1ng DNS s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i b\u1ea3n ghi kh\u00e1c nhau \u0111\u1ec3 \u0111i\u1ec1u h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp, v\u00e0 h\u1ea7u h\u1ebft c\u00e1c b\u1ea3n ghi n\u00e0y \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean FQDN.<\/p>\n<ul>\n<li><strong>Email:<\/strong> B\u1ea3n ghi MX (Mail Exchange) kh\u00f4ng tr\u1ecf \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP, m\u00e0 tr\u1ecf \u0111\u1ebfn m\u1ed9t FQDN c\u1ee7a m\u00e1y ch\u1ee7 email (v\u00ed d\u1ee5: mail.interdata.vn). Khi ai \u0111\u00f3 g\u1eedi email \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 @interdata.vn, h\u1ec7 th\u1ed1ng s\u1ebd t\u00ecm FQDN trong b\u1ea3n ghi MX \u0111\u1ec3 chuy\u1ec3n th\u01b0 \u0111\u1ebfn \u0111\u00fang n\u01a1i.<\/li>\n<li><strong>Database &amp; API:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u1eddng k\u1ebft n\u1ed1i \u0111\u1ebfn m\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 API th\u00f4ng qua FQDN. Vi\u1ec7c n\u00e0y gi\u00fap h\u1ec7 th\u1ed1ng linh ho\u1ea1t h\u01a1n. N\u1ebfu \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 thay \u0111\u1ed5i, b\u1ea1n ch\u1ec9 c\u1ea7n c\u1eadp nh\u1eadt l\u1ea1i b\u1ea3n ghi DNS cho FQDN \u0111\u00f3, m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i thay \u0111\u1ed5i m\u00e3 ngu\u1ed3n c\u1ee7a \u1ee9ng d\u1ee5ng.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Phan-biet-FQDN-va-PQDN-Hostname\"><\/span>Ph\u00e2n bi\u1ec7t FQDN v\u00e0 PQDN (Hostname)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>T\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh FQDN (Fully Qualified Domain Name) v\u00e0 PQDN (Partially Qualified Domain Name) l\u00e0 hai lo\u1ea1i hostname kh\u00e1c nhau d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ch\u00ednh x\u00e1c c\u1ee7a t\u00ean mi\u1ec1n.<\/p>\n<p>FQDN l\u00e0 t\u00ean mi\u1ec1n \u0111\u1ea7y \u0111\u1ee7, x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c v\u1ecb tr\u00ed c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7 ho\u1eb7c m\u00e1y t\u00ednh tr\u00ean m\u1ea1ng b\u1eb1ng c\u00e1ch cung c\u1ea5p \u0111\u01b0\u1eddng d\u1eabn tuy\u1ec7t \u0111\u1ed1i \u0111\u1ea7y \u0111\u1ee7, g\u1ed3m c\u1ea3 hostname v\u00e0 t\u00ean mi\u1ec1n cha c\u1ea5p cao nh\u1ea5t. FQDN gi\u00fap \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c host trong h\u1ec7 th\u1ed1ng DNS, v\u00ed d\u1ee5: mail.example.com l\u00e0 m\u1ed9t FQDN.<\/p>\n<p>Trong khi \u0111\u00f3, PQDN l\u00e0 t\u00ean mi\u1ec1n m\u1ed9t ph\u1ea7n, ch\u1ec9 cung c\u1ea5p m\u1ed9t ph\u1ea7n nh\u1ecf ho\u1eb7c t\u00ean t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a hostname, kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tuy\u1ec7t \u0111\u1ed1i v\u1ecb tr\u00ed c\u1ee7a thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng. PQDN th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c m\u1ea1ng n\u1ed9i b\u1ed9 ho\u1eb7c khi vi\u1ec7c tham chi\u1ebfu hostname c\u1ea7n s\u1ef1 ti\u1ec7n l\u1ee3i m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i cung c\u1ea5p to\u00e0n b\u1ed9 FQDN, v\u00ed d\u1ee5: ch\u1ec9 d\u00f9ng &#8220;server1&#8221; thay v\u00ec &#8220;server1.internal.example.com&#8221;.<\/p>\n<p>S\u1ef1 nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 gi\u1eefa FQDN v\u00e0 PQDN. \u0110\u1ec3 l\u00e0m r\u00f5 v\u1ea5n \u0111\u1ec1 n\u00e0y, h\u00e3y xem b\u1ea3ng so s\u00e1nh d\u01b0\u1edbi \u0111\u00e2y. Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y c\u0169ng l\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c b\u1ea3n ch\u1ea5t\u00a0FQDN l\u00e0 g\u00ec.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif;\">\n<thead>\n<tr style=\"background: linear-gradient(90deg, #0C40F4, #077FFA, #0497FC); color: #ffffff; text-align: left;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">Ti\u00eau ch\u00ed<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">FQDN (Fully Qualified Domain Name)<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">PQDN (Partially Qualified Domain Name)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #f9f9f9;\">\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u00ean g\u1ecdi \u0111\u1ea7y \u0111\u1ee7<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n m\u1ed9t ph\u1ea7n (th\u01b0\u1eddng l\u00e0 Hostname)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">M\u1ee9c \u0111\u1ed9 \u0111\u1ecbnh danh<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Tuy\u1ec7t \u0111\u1ed1i. X\u00e1c \u0111\u1ecbnh duy nh\u1ea5t m\u1ed9t m\u00e1y ch\u1ee7 tr\u00ean to\u00e0n Internet.<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u01b0\u01a1ng \u0111\u1ed1i. Ch\u1ec9 x\u00e1c \u0111\u1ecbnh m\u1ed9t m\u00e1y ch\u1ee7 trong m\u1ed9t m\u1ea1ng c\u1ee5c b\u1ed9 (LAN) ho\u1eb7c m\u1ed9t domain c\u1ee5 th\u1ec3.<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Ph\u1ea1m vi<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">To\u00e0n c\u1ea7u (Global)<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">C\u1ee5c b\u1ed9 (Local)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">V\u00ed d\u1ee5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">server1.phongketoan.interdata.vn<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">server1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>N\u00f3i c\u00e1ch kh\u00e1c, PQDN (hay Hostname) ch\u1ec9 c\u00f3 \u00fd ngh\u0129a trong m\u1ed9t ng\u1eef c\u1ea3nh h\u1eb9p. M\u00e1y t\u00ednh c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u server1 l\u00e0 m\u00e1y ch\u1ee7 n\u00e0o \u0111\u00f3 trong m\u1ea1ng n\u1ed9i b\u1ed9. Nh\u01b0ng v\u1edbi m\u1ed9t m\u00e1y t\u00ednh kh\u00e1c tr\u00ean Internet, c\u00e1i t\u00ean server1 ho\u00e0n to\u00e0n v\u00f4 ngh\u0129a.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, FQDN server1.phongketoan.interdata.vn cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 &#8220;h\u1ecd v\u00e0 t\u00ean&#8221; c\u00f9ng &#8220;\u0111\u1ecba ch\u1ec9&#8221;, gi\u00fap b\u1ea5t k\u1ef3 m\u00e1y t\u00ednh n\u00e0o tr\u00ean th\u1ebf gi\u1edbi c\u0169ng c\u00f3 th\u1ec3 t\u00ecm ra n\u00f3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FQDN-khac-gi-so-voi-Domain-thong-thuong\"><\/span><strong>FQDN kh\u00e1c g\u00ec so v\u1edbi Domain th\u00f4ng th\u01b0\u1eddng?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi r\u1ea5t hay v\u00e0 gi\u00fap l\u00e0m r\u00f5 h\u01a1n kh\u00e1i ni\u1ec7m. M\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng d\u00f9ng c\u00e1c thu\u1eadt ng\u1eef &#8220;domain&#8221;, &#8220;subdomain&#8221; v\u00e0 &#8220;FQDN&#8221; m\u1ed9t c\u00e1ch kh\u00e1 t\u1ef1 do, nh\u01b0ng ch\u00fang c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt.<\/p>\n<ul>\n<li><strong>Domain Name (T\u00ean mi\u1ec1n):<\/strong> Th\u01b0\u1eddng ch\u1ec9 ph\u1ea7n t\u00ean mi\u1ec1n c\u1ea5p hai v\u00e0 c\u1ea5p cao nh\u1ea5t, v\u00ed d\u1ee5: interdata.vn. \u0110\u00e2y l\u00e0 &#8220;m\u1ea3nh \u0111\u1ea5t&#8221; b\u1ea1n \u0111\u0103ng k\u00fd v\u00e0 s\u1edf h\u1eefu.<\/li>\n<li><strong>Subdomain (T\u00ean mi\u1ec1n ph\u1ee5):<\/strong> L\u00e0 m\u1ed9t ph\u1ea7n \u0111\u01b0\u1ee3c t\u1ea1o ra d\u01b0\u1edbi t\u00ean mi\u1ec1n ch\u00ednh, v\u00ed d\u1ee5: blog.interdata.vn.<\/li>\n<li><strong>FQDN (T\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n):<\/strong> L\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 ho\u00e0n ch\u1ec9nh tr\u1ecf \u0111\u1ebfn m\u1ed9t t\u00e0i nguy\u00ean c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n<p>M\u1ed1i quan h\u1ec7 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 sau: <strong>M\u1ecdi FQDN \u0111\u1ec1u ch\u1ee9a m\u1ed9t t\u00ean mi\u1ec1n, nh\u01b0ng kh\u00f4ng ph\u1ea3i t\u00ean mi\u1ec1n n\u00e0o c\u0169ng l\u00e0 m\u1ed9t FQDN ho\u00e0n ch\u1ec9nh ch\u1ec9 \u0111\u1ecbnh m\u1ed9t m\u00e1y ch\u1ee7.<\/strong><\/p>\n<figure id=\"attachment_35732\" aria-describedby=\"caption-attachment-35732\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35732\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-khac-gi-so-voi-Domain-thuong.jpg\" alt=\"FQDN kh\u00e1c g\u00ec so v\u1edbi Domain th\u01b0\u1eddng\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-khac-gi-so-voi-Domain-thuong.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-khac-gi-so-voi-Domain-thuong-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/FQDN-khac-gi-so-voi-Domain-thuong-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35732\" class=\"wp-caption-text\">FQDN kh\u00e1c g\u00ec so v\u1edbi Domain th\u01b0\u1eddng?<\/figcaption><\/figure>\n<p>V\u00ed d\u1ee5:<\/p>\n<ul>\n<li>interdata.vn l\u00e0 m\u1ed9t t\u00ean mi\u1ec1n.<\/li>\n<li>www.interdata.vn l\u00e0 m\u1ed9t FQDN, ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 web c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3.<\/li>\n<li>blog.interdata.vn v\u1eeba l\u00e0 m\u1ed9t subdomain, v\u1eeba l\u00e0 m\u1ed9t FQDN ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 ch\u1ee9a trang blog.<\/li>\n<\/ul>\n<p>Hi\u1ec3u \u0111\u01a1n gi\u1ea3n, FQDN l\u00e0 \u0111\u1ecba ch\u1ec9 chi ti\u1ebft nh\u1ea5t, trong khi domain l\u00e0 c\u00e1i t\u00ean chung chung h\u01a1n. Vi\u1ec7c l\u00e0m r\u00f5 \u0111\u01b0\u1ee3c <strong>FQDN l\u00e0 g\u00ec<\/strong> so v\u1edbi domain s\u1ebd gi\u00fap b\u1ea1n c\u1ea5u h\u00ecnh c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FQDN-duoc-ung-dung-pho-bien-nhu-the-nao\"><\/span>FQDN \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Truy-cap-website\"><\/span><strong>Truy c\u1eadp website<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u00ean mi\u1ec1n c\u1ee7a m\u1ed9t website, ch\u1eb3ng h\u1ea1n nh\u01b0 <code>www.example.com<\/code>, v\u1ec1 b\u1ea3n ch\u1ea5t ch\u00ednh l\u00e0 m\u1ed9t FQDN. Khi b\u1ea1n g\u00f5 \u0111\u1ecba ch\u1ec9 n\u00e0y v\u00e0o tr\u00ecnh duy\u1ec7t, h\u1ec7 th\u1ed1ng DNS s\u1ebd d\u1ef1a v\u00e0o FQDN \u0111\u00f3 \u0111\u1ec3 t\u00ecm ra ch\u00ednh x\u00e1c m\u00e1y ch\u1ee7 (server) \u0111ang ch\u1ee9a n\u1ed9i dung c\u1ee7a trang web.<\/p>\n<p>Nh\u1edd t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh FQDN, tr\u00ecnh duy\u1ec7t m\u1edbi c\u00f3 th\u1ec3 &#8220;g\u00f5 c\u1eeda&#8221; \u0111\u00fang m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef website b\u1ea1n mu\u1ed1n, gi\u00fap tr\u1ea3i nghi\u1ec7m duy\u1ec7t web v\u1eeba nhanh v\u1eeba chu\u1ea9n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Email\"><\/span><strong>Email<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong th\u1ebf gi\u1edbi email, c\u00e1c m\u00e1y ch\u1ee7 ch\u1ecbu tr\u00e1ch nhi\u1ec7m g\u1eedi v\u00e0 nh\u1eadn th\u01b0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n b\u1eb1ng FQDN.<\/p>\n<p>L\u1ea5y v\u00ed d\u1ee5, m\u1ed9t m\u00e1y ch\u1ee7 mail c\u00f3 th\u1ec3 mang t\u00ean <code>mail.example.com<\/code>. \u0110\u1ecba ch\u1ec9 n\u00e0y gi\u00fap c\u00e1c m\u00e1y ch\u1ee7 email kh\u00e1c tr\u00ean Internet &#8220;bi\u1ebft \u0111\u01b0\u1eddng&#8221; v\u00e0 chuy\u1ec3n th\u01b0 \u0111\u1ebfn \u0111\u00fang n\u01a1i. Vi\u1ec7c d\u00f9ng FQDN trong email c\u00f2n h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c, gi\u00fap gi\u1ea3m b\u1edbt th\u01b0 r\u00e1c v\u00e0 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c chi\u00eau tr\u00f2 t\u1ea5n c\u00f4ng m\u1ea1o danh.<\/p>\n<figure id=\"attachment_35730\" aria-describedby=\"caption-attachment-35730\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35730\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Ung-dung-cua-FQDN.jpg\" alt=\"\u1ee8ng d\u1ee5ng c\u1ee7a FQDN\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Ung-dung-cua-FQDN.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Ung-dung-cua-FQDN-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Ung-dung-cua-FQDN-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35730\" class=\"wp-caption-text\">\u1ee8ng d\u1ee5ng c\u1ee7a FQDN<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cau-hinh-mang\"><\/span><strong>C\u1ea5u h\u00ecnh m\u1ea1ng<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee7a doanh nghi\u1ec7p, FQDN \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 &#8220;g\u1ecdi t\u00ean&#8221; ch\u00ednh x\u00e1c t\u1eebng thi\u1ebft b\u1ecb ho\u1eb7c d\u1ecbch v\u1ee5 m\u1ea1ng. \u0110i\u1ec1u n\u00e0y gi\u00fap qu\u1ea3n tr\u1ecb vi\u00ean (admin) d\u1ec5 d\u00e0ng ph\u00e2n chia quy\u1ec1n truy c\u1eadp, thi\u1ebft l\u1eadp ai \u0111\u01b0\u1ee3c d\u00f9ng g\u00ec v\u00e0 gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1eebng m\u00e1y ch\u1ee7 hay \u1ee9ng d\u1ee5ng m\u1ed9t c\u00e1ch r\u1ea1ch r\u00f2i, kh\u00f4ng c\u00f2n lo nh\u1ea7m l\u1eabn do b\u1ecb tr\u00f9ng t\u00ean m\u00e1y trong c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng ph\u1ee9c t\u1ea1p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bao-mat\"><\/span><strong>B\u1ea3o m\u1eadt<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>FQDN c\u0169ng gi\u1eef m\u1ed9t vai tr\u00f2 ch\u1ee7 ch\u1ed1t trong m\u1ea3ng b\u1ea3o m\u1eadt. Khi ng\u01b0\u1eddi ta c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL\/TLS (c\u00e1i \u1ed5 kh\u00f3a tr\u00ean tr\u00ecnh duy\u1ec7t) cho website ho\u1eb7c d\u1ecbch v\u1ee5, FQDN \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 &#8220;x\u00e1c minh danh t\u00ednh&#8221; m\u00e1y ch\u1ee7.<\/p>\n<p>Ch\u1ee9ng ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t cho m\u1ed9t FQDN c\u1ee5 th\u1ec3, gi\u00fap ng\u01b0\u1eddi d\u00f9ng tin t\u01b0\u1edfng r\u1eb1ng h\u1ecd \u0111ang k\u1ebft n\u1ed1i &#8220;ch\u00ednh ch\u1ee7&#8221;, t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i qua m\u1ea1ng kh\u1ecfi r\u1ee7i ro b\u1ecb &#8220;nh\u00f2m ng\u00f3&#8221; hay gi\u1ea3 m\u1ea1o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Truong-hop-nen-su-dung-FQDN\"><\/span>Tr\u01b0\u1eddng h\u1ee3p n\u00ean s\u1eed d\u1ee5ng FQDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>FQDN th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean s\u1eed d\u1ee5ng cho b\u1ea5t k\u1ef3 ho\u1ea1t \u0111\u1ed9ng n\u00e0o tr\u00ean Internet thay v\u00ec d\u00f9ng \u0111\u1ecba ch\u1ec9 IP. L\u00fd do l\u00e0 v\u00ec t\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n (FQDN) d\u1ec5 nh\u1edb h\u01a1n nhi\u1ec1u. C\u1ee5 th\u1ec3 h\u01a1n, \u0111\u00e2y l\u00e0 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p b\u1ea1n s\u1ebd d\u00f9ng FQDN:<\/p>\n<ul>\n<li><strong>Nh\u1eadn ch\u1ee9ng ch\u1ec9 SSL:<\/strong> SSL (secure sockets layer) l\u00e0 d\u1ecbch v\u1ee5 c\u00f3 nhi\u1ec7m v\u1ee5 b\u1ea3o v\u1ec7 k\u1ebft n\u1ed1i gi\u1eefa tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n v\u00e0 m\u00e1y ch\u1ee7. C\u00e1c ch\u1ee9ng ch\u1ec9 SSL n\u00e0y \u0111\u01b0\u1ee3c c\u1ea5p cho c\u00e1c t\u00ean mi\u1ec1n \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n, v\u00ec v\u1eady b\u1ea1n c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng d\u00f9ng \u0111\u01b0\u1ee3c c\u00e1c d\u1ecbch v\u1ee5 n\u00e0y n\u1ebfu thi\u1ebfu FQDN.<\/li>\n<li><strong>K\u1ebft n\u1ed1i v\u1edbi m\u1ed9t m\u00e1y ch\u1ee7 t\u1eeb xa:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o m\u1ed9t m\u00e1y ch\u1ee7 t\u1eeb xa ho\u1eb7c m\u1ed9t m\u00e1y \u1ea3o b\u1eb1ng c\u00e1ch g\u00e1n cho n\u00f3 m\u1ed9t FQDN. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p DNS tra c\u1ee9u trong b\u1ea3ng ghi c\u1ee7a ch\u00ednh n\u00f3 v\u00e0 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed m\u00e1y ch\u1ee7. N\u1ebfu b\u1ea1n ch\u1ec9 d\u00f9ng hostname (t\u00ean m\u00e1y) \u0111\u1ec3 k\u1ebft n\u1ed1i, \u1ee9ng d\u1ee5ng c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng x\u1eed l\u00fd \u0111\u01b0\u1ee3c hostname \u0111\u00f3.<\/li>\n<li><strong>Truy c\u1eadp v\u00e0o m\u1ed9t giao th\u1ee9c ho\u1eb7c d\u1ecbch v\u1ee5 mi\u1ec1n c\u1ee5 th\u1ec3:<\/strong> M\u1ecdi ho\u1ea1t \u0111\u1ed9ng giao ti\u1ebfp th\u00f4ng tin tr\u00ean Internet \u0111\u1ec1u li\u00ean quan \u0111\u1ebfn DNS, bao g\u1ed3m c\u1ea3 vi\u1ec7c \u0111i\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn FQDN. V\u00ed d\u1ee5 cho vi\u1ec7c n\u00e0y l\u00e0 khi k\u1ebft n\u1ed1i v\u1edbi Giao th\u1ee9c truy\u1ec1n t\u1ec7p (File Transfer Protocol &#8211; FTP) ho\u1eb7c m\u00e1y ch\u1ee7 th\u01b0 \u0111i\u1ec7n t\u1eed (mail server).<\/li>\n<li><strong>&#8220;Chuy\u1ec3n nh\u00e0&#8221; sang m\u00e1y ch\u1ee7 m\u1edbi:<\/strong> N\u1ebfu b\u1ea1n mu\u1ed1n di d\u1eddi d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh sang m\u1ed9t m\u00e1y ch\u1ee7 c\u00f3 \u0111\u1ecba ch\u1ec9 IP kh\u00e1c, vi\u1ec7c s\u1eed d\u1ee5ng FQDN thay v\u00ec \u0111\u1ecba ch\u1ec9 IP cho ph\u00e9p b\u1ea1n thay \u0111\u1ed5i d\u1eef li\u1ec7u DNS m\u1ed9t c\u00e1ch ch\u1edbp nho\u00e1ng v\u00e0 gi\u1ea3m b\u1edbt s\u1ef1 c\u1ed1 khi \u0111\u1ecba ch\u1ec9 IP thay \u0111\u1ed5i.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac-tieu-chuan-ky-thuat-khi-tao-mot-FQDN\"><\/span>C\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt khi t\u1ea1o m\u1ed9t FQDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t FQDN, b\u1ea1n c\u1ea7n ph\u1ea3i tu\u00e2n theo m\u1ed9t v\u00e0i quy t\u1eafc v\u00e0 ti\u00eau chu\u1ea9n nh\u01b0 sau:<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 d\u00e0i:<\/strong> M\u1ed9t T\u00ean mi\u1ec1n \u0110\u1ee7 \u0111i\u1ec1u ki\u1ec7n Ho\u00e0n ch\u1ec9nh (FQDN) kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p v\u01b0\u1ee3t qu\u00e1 255 k\u00fd t\u1ef1, bao g\u1ed3m c\u1ea3 c\u00e1c d\u1ea5u ch\u1ea5m. M\u1ed7i &#8220;m\u1ea9u&#8221; (ph\u1ea7n) c\u1ee7a FQDN c\u0169ng kh\u00f4ng \u0111\u01b0\u1ee3c d\u00e0i h\u01a1n 63 k\u00fd t\u1ef1.<\/li>\n<li><strong>K\u00fd t\u1ef1:<\/strong> ch\u1ec9 \u0111\u01b0\u1ee3c ph\u00e9p d\u00f9ng c\u00e1c k\u00fd t\u1ef1 ch\u1eef c\u00e1i Latinh (a-z), s\u1ed1 (0-9) v\u00e0 d\u1ea5u g\u1ea1ch ngang (-). M\u1ed9t FQDN kh\u00f4ng \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u ho\u1eb7c k\u1ebft th\u00fac b\u1eb1ng d\u1ea5u g\u1ea1ch ngang. FQDN c\u00f3 ph\u00e2n bi\u1ec7t ch\u1eef hoa v\u00e0 ch\u1eef th\u01b0\u1eddng.<\/li>\n<li><strong>D\u1ea5u ch\u1ea5m:<\/strong> M\u1ed9t FQDN ph\u1ea3i c\u00f3 t\u1ed1i thi\u1ec3u m\u1ed9t d\u1ea5u ch\u1ea5m \u0111\u1ec3 ng\u0103n c\u00e1ch hostname v\u00e0 domain. M\u1ed9t FQDN c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u d\u1ea5u ch\u1ea5m \u0111\u1ec3 ph\u00e2n t\u00e1ch c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a domain. M\u1ed9t FQDN b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 m\u1ed9t d\u1ea5u ch\u1ea5m \u1edf cu\u1ed1i c\u00f9ng \u0111\u1ec3 ch\u1ec9 ra \u0111i\u1ec3m k\u1ebft th\u00fac c\u1ee7a t\u00ean.<\/li>\n<li><strong>Duy nh\u1ea5t:<\/strong> FQDN ph\u1ea3i l\u00e0 &#8220;\u0111\u1ed9c nh\u1ea5t v\u00f4 nh\u1ecb&#8221; tr\u00ean to\u00e0n c\u1ea7u, kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p tr\u00f9ng l\u1eb7p v\u1edbi b\u1ea5t k\u1ef3 FQDN n\u00e0o kh\u00e1c. H\u1ec7 th\u1ed1ng DNS s\u1ebd \u0111\u1ea3m b\u1ea3o \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch ki\u1ec3m tra xem FQDN \u0111\u00f3 \u0111\u00e3 t\u1ed3n t\u1ea1i hay ch\u01b0a tr\u01b0\u1edbc khi cho ph\u00e9p \u0111\u0103ng k\u00fd.<\/li>\n<\/ul>\n<figure id=\"attachment_35731\" aria-describedby=\"caption-attachment-35731\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35731\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cac-tieu-chuan-khi-tao-mot-FQDN.jpg\" alt=\"C\u00e1c ti\u00eau chu\u1ea9n khi t\u1ea1o m\u1ed9t FQDN\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cac-tieu-chuan-khi-tao-mot-FQDN.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cac-tieu-chuan-khi-tao-mot-FQDN-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/Cac-tieu-chuan-khi-tao-mot-FQDN-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35731\" class=\"wp-caption-text\">C\u00e1c ti\u00eau chu\u1ea9n khi t\u1ea1o m\u1ed9t FQDN<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cach-su-dung-FQDN-trong-mang-va-web\"><\/span>C\u00e1ch s\u1eed d\u1ee5ng FQDN trong m\u1ea1ng v\u00e0 web<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng FQDN trong r\u1ea5t nhi\u1ec1u b\u1ed1i c\u1ea3nh kh\u00e1c nhau trong m\u00f4i tr\u01b0\u1eddng web v\u00e0 m\u1ea1ng, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li><strong>Truy c\u1eadp v\u00e0o c\u00e1c m\u00e1y ch\u1ee7 v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 nh\u1eadp FQDN c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7 ho\u1eb7c d\u1ecbch v\u1ee5 v\u00e0o thanh \u0111\u1ecba ch\u1ec9 tr\u00ecnh duy\u1ec7t \u0111\u1ec3 &#8220;g\u1ecdi&#8221; n\u00f3 ra.<\/li>\n<li><strong>Mua t\u00ean mi\u1ec1n:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n cho trang web ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh qua m\u1ed9t nh\u00e0 cung c\u1ea5p. B\u1ea1n \u0111\u01b0\u1ee3c ch\u1ecdn TLD (\u0111u\u00f4i t\u00ean mi\u1ec1n) sao cho h\u1ee3p v\u1edbi lo\u1ea1i h\u00ecnh ho\u1eb7c khu v\u1ef1c c\u1ee7a website\/d\u1ecbch v\u1ee5 \u0111\u00f3.<\/li>\n<li><strong>Thi\u1ebft l\u1eadp subdomain (t\u00ean mi\u1ec1n ph\u1ee5):<\/strong> B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o subdomain cho website ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh nh\u1eb1m ph\u00e2n t\u00e1ch c\u00e1c khu v\u1ef1c ri\u00eang bi\u1ec7t c\u1ee7a n\u00f3.<\/li>\n<li><strong>C\u1ea5u h\u00ecnh DNS:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp DNS cho website ho\u1eb7c d\u1ecbch v\u1ee5 \u0111\u1ec3 &#8220;map&#8221; (\u00e1nh x\u1ea1) FQDN sang \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7. B\u1ea1n \u0111\u01b0\u1ee3c d\u00f9ng nhi\u1ec1u lo\u1ea1i b\u1ea3n ghi DNS kh\u00e1c nhau \u0111\u1ec3 ki\u1ec3m so\u00e1t c\u00e1ch FQDN ho\u1ea1t \u0111\u1ed9ng. V\u00ed d\u1ee5, d\u00f9ng b\u1ea3n ghi A \u0111\u1ec3 &#8220;tr\u1ecf&#8221; T\u00ean mi\u1ec1n \u0110\u1ee7 \u0111i\u1ec1u ki\u1ec7n Ho\u00e0n ch\u1ec9nh sang \u0111\u1ecba ch\u1ec9 IPv4, b\u1ea3n ghi MX \u0111\u1ec3 &#8220;tr\u1ecf&#8221; T\u00ean mi\u1ec1n \u0110\u1ee7 \u0111i\u1ec1u ki\u1ec7n Ho\u00e0n ch\u1ec9nh \u0111\u1ebfn m\u00e1y ch\u1ee7 email, hay b\u1ea3n ghi CNAME \u0111\u1ec3 &#8220;tr\u1ecf&#8221; T\u00ean mi\u1ec1n \u0110\u1ee7 \u0111i\u1ec1u ki\u1ec7n Ho\u00e0n ch\u1ec9nh n\u00e0y sang m\u1ed9t T\u00ean mi\u1ec1n \u0110\u1ee7 \u0111i\u1ec1u ki\u1ec7n Ho\u00e0n ch\u1ec9nh kh\u00e1c.<\/li>\n<li><strong>Thi\u1ebft l\u1eadp SSL\/TLS:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 c\u00e0i \u0111\u1eb7t SSL\/TLS cho website ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh nh\u1eb1m m\u00e3 h\u00f3a \u0111\u01b0\u1eddng truy\u1ec1n k\u1ebft n\u1ed1i gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 ng\u01b0\u1eddi d\u00f9ng. B\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 ch\u1ee9ng ch\u1ec9 SSL\/TLS cho FQDN c\u1ee7a website\/d\u1ecbch v\u1ee5 \u0111\u00f3.<\/li>\n<\/ul>\n<div>\n<h2><span class=\"ez-toc-section\" id=\"Cach-tim-FQDN-tren-may-tinh-cua-ban-Windows-MacOS-Linux\"><\/span>C\u00e1ch t\u00ecm FQDN tr\u00ean m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n (Windows, MacOS, Linux)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>B\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 tra c\u1ee9u FQDN tr\u00ean m\u00e1y t\u00ednh c\u00e1 nh\u00e2n c\u1ee7a m\u00ecnh, \u00e1p d\u1ee5ng cho m\u1ecdi h\u1ec7 \u0111i\u1ec1u h\u00e0nh ph\u1ed5 bi\u1ebfn. InterData s\u1ebd ch\u1ec9 d\u1eabn b\u1ea1n c\u00e1ch tra c\u1ee9u cho t\u1eebng h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li><strong>Tr\u00ean Windows,<\/strong> b\u1ea1n h\u00e3y m\u1edf <strong>Control Panel<\/strong> -&gt; nh\u1ea5n v\u00e0o <strong>System<\/strong>. B\u1ea1n s\u1ebd nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c n\u00f3 qua ghi ch\u00fa \u201c<strong>Full Computer Name<\/strong>\u201d.<\/li>\n<li><strong>Tr\u00ean MacOS,<\/strong> b\u1ea1n h\u00e3y m\u1edf Terminal, g\u00f5 l\u1ec7nh \u201c<strong>hostname \u2013f<\/strong>\u201d, v\u00e0 sau \u0111\u00f3 nh\u1ea5n <strong>Enter<\/strong>. T\u00ecnh tr\u1ea1ng t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb.<\/li>\n<li><strong>V\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux,<\/strong> b\u1ea1n m\u1edf <strong>Terminal<\/strong>, nh\u1eadp \u201c<strong>hostname \u2013A<\/strong>\u201d v\u00e0 b\u1ea1n s\u1ebd tra c\u1ee9u \u0111\u01b0\u1ee3c FQDN.<\/li>\n<\/ul>\n<\/div>\n<p>Qua b\u00e0i vi\u1ebft chi ti\u1ebft n\u00e0y, hy v\u1ecdng b\u1ea1n \u0111\u00e3 c\u00f3 m\u1ed9t c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u00e0 r\u00f5 r\u00e0ng v\u1ec1 <strong>FQDN l\u00e0 g\u00ec<\/strong>. FQDN kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t c\u00e1i t\u00ean, m\u00e0 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ecba ch\u1ec9 tuy\u1ec7t \u0111\u1ed1i, x\u01b0\u01a1ng s\u1ed1ng cho vi\u1ec7c \u0111\u1ecbnh danh v\u00e0 giao ti\u1ebfp tr\u00ean Internet. T\u1eeb vi\u1ec7c \u0111\u1ea3m b\u1ea3o an to\u00e0n cho c\u00e1c k\u1ebft n\u1ed1i SSL, gi\u00fap k\u1ebft n\u1ed1i t\u1eeb xa ch\u00ednh x\u00e1c, \u0111\u1ebfn vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn cho c\u00e1c d\u1ecbch v\u1ee5 quan tr\u1ecdng nh\u01b0 email, vai tr\u00f2 c\u1ee7a t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh l\u00e0 kh\u00f4ng th\u1ec3 thay th\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o m\u00e0 h\u00e0ng t\u1ef7 m\u00e1y t\u00ednh tr\u00ean Internet c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y nhau m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c m\u00e0 kh\u00f4ng h\u1ec1 nh\u1ea7m l\u1eabn? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf m\u1ed9t kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng nh\u01b0ng c\u1ef1c k\u1ef3 quan tr\u1ecdng: FQDN &#8211; Fully Qualified Domain Name. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0<\/p>\n","protected":false},"author":11,"featured_media":35733,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-35726","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-website"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/35726","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=35726"}],"version-history":[{"count":3,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/35726\/revisions"}],"predecessor-version":[{"id":35736,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/35726\/revisions\/35736"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/35733"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=35726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=35726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=35726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}