{"id":20358,"date":"2026-01-21T09:17:18","date_gmt":"2026-01-21T02:17:18","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=20358"},"modified":"2026-03-19T11:21:06","modified_gmt":"2026-03-19T04:21:06","slug":"lets-encrypt-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/","title":{"rendered":"Let\u2019s Encrypt l\u00e0 g\u00ec? L\u1ee3i \u00edch v\u00e0 c\u00e1ch t\u1ea1o SSL Let&#8217;s Encrypt 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\/lets-encrypt-la-gi\/#Lets-Encrypt-la-gi\" >Let&#8217;s Encrypt l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Cach-thuc-hoat-dong-cua-Lets-Encrypt\" >C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Let&#8217;s Encrypt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Lets-Encrypt-dung-de-lam-gi\" >Let&#8217;s Encrypt d\u00f9ng \u0111\u1ec3 l\u00e0m 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-4\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Ma-hoa-du-lieu-giua-trinh-duyet-va-server\" >M\u00e3 h\u00f3a d\u1eef li\u1ec7u gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Bao-ve-thong-tin-dang-nhap-va-bieu-mau\" >B\u1ea3o v\u1ec7 th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0 bi\u1ec3u m\u1eabu<\/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\/lets-encrypt-la-gi\/#Kich-hoat-HTTPS-va-bieu-tuong-o-khoa\" >K\u00edch ho\u1ea1t HTTPS v\u00e0 bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a<\/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\/lets-encrypt-la-gi\/#Lien-he-mat-thiet-voi-SEO-UX\" >Li\u00ean h\u1ec7 m\u1eadt thi\u1ebft v\u1edbi SEO &amp; UX<\/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\/lets-encrypt-la-gi\/#Loi-ich-khi-su-dung-SSL-Lets-Encrypt\" >L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng SSL Let\u2019s Encrypt<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Mien-phi-va-de-trien-khai\" >Mi\u1ec5n ph\u00ed v\u00e0 d\u1ec5 tri\u1ec3n khai<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Tu-dong-hoa-cao-voi-giao-thuc-ACME\" >T\u1ef1 \u0111\u1ed9ng h\u00f3a cao v\u1edbi giao th\u1ee9c ACME<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Cai-thien-SEO-va-do-tin-cay-website\" >C\u1ea3i thi\u1ec7n SEO v\u00e0 \u0111\u1ed9 tin c\u1eady 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\/lets-encrypt-la-gi\/#De-dang-cai-dat-Tich-hop-san-trong-cPanel-DirectAdmin-hoac-dung-Certbot\" >D\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t: T\u00edch h\u1ee3p s\u1eb5n trong cPanel, DirectAdmin ho\u1eb7c d\u00f9ng Certbot<\/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\/lets-encrypt-la-gi\/#Bao-mat-Su-dung-chuan-ma-hoa-manh-tuong-duong-SSL-tra-phi\" >B\u1ea3o m\u1eadt: S\u1eed d\u1ee5ng chu\u1ea9n m\u00e3 h\u00f3a m\u1ea1nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng SSL tr\u1ea3 ph\u00ed<\/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\/lets-encrypt-la-gi\/#Tu-dong-gia-han-Giam-thieu-rui-ro-quen-gia-han\" >T\u1ef1 \u0111\u1ed9ng gia h\u1ea1n: Gi\u1ea3m thi\u1ec3u r\u1ee7i ro qu\u00ean gia h\u1ea1n<\/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\/lets-encrypt-la-gi\/#Han-che-cua-Lets-Encrypt-can-biet\" >H\u1ea1n ch\u1ebf c\u1ee7a Let\u2019s Encrypt c\u1ea7n bi\u1ebft<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Thoi-han-chung-chi-ngan-90-ngay\" >Th\u1eddi h\u1ea1n ch\u1ee9ng ch\u1ec9 ng\u1eafn (90 ng\u00e0y)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Khong-ho-tro-EVOV-SSL-Chi-co-DV-SSL\" >Kh\u00f4ng h\u1ed7 tr\u1ee3 EV\/OV SSL (Ch\u1ec9 c\u00f3 DV SSL)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Phu-thuoc-vao-cau-hinh-server\" >Ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Khong-co-bao-hiem-va-che-do-bao-hanh\" >Kh\u00f4ng c\u00f3 b\u1ea3o hi\u1ec3m v\u00e0 ch\u1ebf \u0111\u1ed9 b\u1ea3o h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Ho-tro-han-che-Chu-yeu-dua-vao-cong-dong\" >H\u1ed7 tr\u1ee3 h\u1ea1n ch\u1ebf: Ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o c\u1ed9ng \u0111\u1ed3ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Chung-chi-Lets-Encrypt-SSL-co-gia-tri-trong-bao-lau\" >Ch\u1ee9ng ch\u1ec9 Let&#8217;s Encrypt SSL c\u00f3 gi\u00e1 tr\u1ecb trong bao l\u00e2u?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Chung-chi-xac-thuc-ten-mien-DV\" >Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (DV)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Chung-chi-ky-tu-dai-dien\" >Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Khi-nao-nen-va-khong-nen-dung-Lets-Encrypt\" >Khi n\u00e0o n\u00ean v\u00e0 kh\u00f4ng n\u00ean d\u00f9ng Let\u2019s Encrypt?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Truong-hop-nen-su-dung\" >Tr\u01b0\u1eddng h\u1ee3p n\u00ean s\u1eed d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Truong-hop-nen-can-nhac-SSL-tra-phi\" >Tr\u01b0\u1eddng h\u1ee3p n\u00ean c\u00e2n nh\u1eafc SSL tr\u1ea3 ph\u00ed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#So-sanh-Lets-Encrypt-mien-phi-va-chung-chi-SSL-tra-phi\" >So s\u00e1nh Let&#8217;s Encrypt mi\u1ec5n ph\u00ed v\u00e0 ch\u1ee9ng ch\u1ec9 SSL tr\u1ea3 ph\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Uu-va-nhuoc-diem-cua-SSL-Lets-Encrypt\" >\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SSL Let&#8217;s Encrypt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Uu-va-nhuoc-diem-cua-chung-chi-SSL-tra-phi\" >\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL tr\u1ea3 ph\u00ed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Cach-tao-chung-chi-SSL-mien-phi-voi-Lets-Encrypt\" >C\u00e1ch t\u1ea1o ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed v\u1edbi Let&#8217;s Encrypt<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Tao-SSL-Lets-Encrypt-tu-Control-Panel\" >T\u1ea1o SSL Let&#8217;s Encrypt t\u1eeb Control Panel<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Gia-han-chung-chi-SSL-Lets-Encrypt-tu-dong\" >Gia h\u1ea1n ch\u1ee9ng ch\u1ec9 SSL Let&#8217;s Encrypt t\u1ef1 \u0111\u1ed9ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt\" >L\u01b0u \u00fd khi s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL t\u1eeb Let&#8217;s Encrypt<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#1-Thoi-han-cua-chung-chi-Lets-Encrypt\" >1. Th\u1eddi h\u1ea1n c\u1ee7a ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#2-Kha-nang-gap-loi-va-giai-phap-thay-the\" >2. Kh\u1ea3 n\u0103ng g\u1eb7p l\u1ed7i v\u00e0 gi\u1ea3i ph\u00e1p thay th\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#3-Su-dung-chung-chi-cho-nhieu-ten-mien-va-may-chu\" >3. S\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 cho nhi\u1ec1u t\u00ean mi\u1ec1n v\u00e0 m\u00e1y ch\u1ee7<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#4-Tuong-thich-thiet-bi-va-he-dieu-hanh\" >4. T\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#5-Khong-co-chinh-sach-den-bu-thiet-hai\" >5. Kh\u00f4ng c\u00f3 ch\u00ednh s\u00e1ch \u0111\u1ec1n b\u00f9 thi\u1ec7t h\u1ea1i<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Cau-hoi-thuong-gap-FAQs\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Lets-Encrypt-co-an-toan-cho-website-ban-hang-khong\" >Let&#8217;s Encrypt c\u00f3 an to\u00e0n cho website b\u00e1n h\u00e0ng kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Tai-sao-chung-chi-chi-co-thoi-han-90-ngay\" >T\u1ea1i sao ch\u1ee9ng ch\u1ec9 ch\u1ec9 c\u00f3 th\u1eddi h\u1ea1n 90 ng\u00e0y?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Lam-sao-de-gia-han-Lets-Encrypt-tu-dong\" >L\u00e0m sao \u0111\u1ec3 gia h\u1ea1n Let&#8217;s Encrypt t\u1ef1 \u0111\u1ed9ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Lets-Encrypt-co-ho-tro-Wildcard-SSL-khong\" >Let&#8217;s Encrypt c\u00f3 h\u1ed7 tr\u1ee3 Wildcard SSL kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Dung-Lets-Encrypt-co-giup-SEO-tot-hon-khong\" >D\u00f9ng Let&#8217;s Encrypt c\u00f3 gi\u00fap SEO t\u1ed1t h\u01a1n kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/#Ket-luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<p><a href=\"https:\/\/interdata.vn\/blog\/lets-encrypt-la-gi\/\"><strong>Let\u2019s Encrypt l\u00e0 g\u00ec?<\/strong><\/a> \u0110\u00e2y l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 cung c\u1ea5p <a href=\"https:\/\/interdata.vn\/blog\/chung-chi-ssl\/\">ch\u1ee9ng ch\u1ec9 SSL<\/a>\/TLS mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n c\u1ea7u. V\u1edbi c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng, Let\u2019s Encrypt tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean c\u1ee7a nhi\u1ec1u qu\u1ea3n tr\u1ecb vi\u00ean web v\u00e0 doanh nghi\u1ec7p. Trong b\u00e0i vi\u1ebft n\u00e0y, InterData s\u1ebd c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u v\u1ec1 Let\u2019s Encrypt, t\u1eeb c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, l\u1ee3i \u00edch, h\u1ea1n ch\u1ebf khi s\u1eed d\u1ee5ng v\u00e0 h\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t Let&#8217;s Encrypt mi\u1ec5n ph\u00ed \u0111\u01a1n gi\u1ea3n, chi ti\u1ebft. \u0110\u1ecdc ngay!<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Lets-Encrypt-la-gi\"><\/span>Let&#8217;s Encrypt l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Let&#8217;s Encrypt<\/strong> l\u00e0 m\u1ed9t t\u1ed5 ch\u1ee9c cung c\u1ea5p ch\u1ee9ng ch\u1ec9 s\u1ed1 SSL\/TLS mi\u1ec5n ph\u00ed, gi\u00fap b\u1ea3o<strong> m\u1eadt k\u1ebft n\u1ed1i gi\u1eefa <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> web v\u00e0 tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/strong>. V\u1edbi ch\u1ee9ng ch\u1ec9 SSL t\u1eeb Let&#8217;s Encrypt, c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a> c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t <a href=\"https:\/\/interdata.vn\/blog\/giao-thuc-https-la-gi\/\">giao th\u1ee9c HTTPS<\/a>, <a href=\"https:\/\/interdata.vn\/blog\/ma-hoa-du-lieu-data-encryption\/\">m\u00e3 h\u00f3a d\u1eef li\u1ec7u<\/a> truy\u1ec1n t\u1ea3i, b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 m\u1eadt kh\u1ea9u, th\u00f4ng tin c\u00e1 nh\u00e2n v\u00e0 giao d\u1ecbch tr\u1ef1c tuy\u1ebfn kh\u1ecfi b\u1ecb \u0111\u00e1nh c\u1eafp ho\u1eb7c nghe l\u00e9n.<\/p>\n<p>Let&#8217;s Encrypt \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi t\u1ed5 ch\u1ee9c phi l\u1ee3i nhu\u1eadn <a href=\"https:\/\/www.abetterinternet.org\/\" rel=\"nofollow noopener\" target=\"_blank\">Internet Security Research Group (ISRG)<\/a> v\u00e0 ho\u1ea1t \u0111\u1ed9ng v\u1edbi m\u1ee5c ti\u00eau gi\u00fap Internet tr\u1edf n\u00ean an to\u00e0n h\u01a1n b\u1eb1ng c\u00e1ch cung c\u1ea5p ch\u1ee9ng ch\u1ec9 <a href=\"https:\/\/interdata.vn\/blog\/free-ssl-la-gi\/\">SSL mi\u1ec5n ph\u00ed<\/a> cho m\u1ecdi ng\u01b0\u1eddi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20369 aligncenter\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Lets-Encrypt-la-gi-1.webp\" alt=\"Let&#039;s Encrypt l\u00e0 g\u00ec?\" width=\"728\" height=\"450\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Lets-Encrypt-la-gi-1.webp 728w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Lets-Encrypt-la-gi-1-300x185.webp 300w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/p>\n<p>Nh\u1edd v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng, qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 t\u1eeb Let&#8217;s Encrypt r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 th\u1ef1c hi\u1ec7n, th\u1eadm ch\u00ed v\u1edbi nh\u1eefng ng\u01b0\u1eddi kh\u00f4ng c\u00f3 nhi\u1ec1u kinh nghi\u1ec7m v\u1ec1 k\u1ef9 thu\u1eadt.<\/p>\n<p>V\u1edbi Let&#8217;s Encrypt, b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 b\u1ea3o m\u1eadt <a href=\"https:\/\/interdata.vn\/blog\/page-la-gi\/\">trang web<\/a> c\u1ee7a m\u00ecnh m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i tr\u1ea3 ph\u00ed ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 c\u00e1c ch\u1ee9ng ch\u1ec9 SSL truy\u1ec1n th\u1ed1ng. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 gi\u00fap t\u0103ng c\u01b0\u1eddng vi\u1ec7c \u00e1p d\u1ee5ng HTTPS tr\u00ean to\u00e0n c\u1ea7u, t\u1ea1o ra m\u1ed9t m\u00f4i tr\u01b0\u1eddng Internet an to\u00e0n v\u00e0 tin c\u1eady h\u01a1n cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-thuc-hoat-dong-cua-Lets-Encrypt\"><\/span>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Let&#8217;s Encrypt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Let\u2019s Encrypt ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean Giao th\u1ee9c ACME (Automatic Certificate Management Environment), gi\u00fap c\u1ea5p v\u00e0 thu h\u1ed3i ch\u1ee9ng ch\u1ec9 SSL\/TLS t\u1ef1 \u0111\u1ed9ng, mang l\u1ea1i s\u1ef1 an to\u00e0n cho trang web c\u1ee7a b\u1ea1n. Quy tr\u00ecnh n\u00e0y gi\u00fap chuy\u1ec3n \u0111\u1ed5i t\u1eeb HTTP sang HTTPS, b\u1ea3o m\u1eadt c\u00e1c k\u1ebft n\u1ed1i cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch Let\u2019s Encrypt ho\u1ea1t \u0111\u1ed9ng:<\/p>\n<ul>\n<li><strong>X\u00e1c nh\u1eadn <a href=\"https:\/\/interdata.vn\/blog\/domain-la-gi\/\">t\u00ean mi\u1ec1n<\/a><\/strong>: \u0110\u1ea7u ti\u00ean, h\u1ec7 th\u1ed1ng x\u00e1c \u0111\u1ecbnh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n. Tr\u00ecnh qu\u1ea3n l\u00fd s\u1ebd k\u1ebft n\u1ed1i v\u1edbi Let\u2019s Encrypt v\u00e0 g\u1eedi v\u1ec1 cho b\u1ea1n m\u1ed9t c\u1eb7p kh\u00f3a (private key v\u00e0 public key). B\u1ea1n s\u1ebd s\u1eed d\u1ee5ng c\u1eb7p kh\u00f3a n\u00e0y \u0111\u1ec3 ch\u1ee9ng minh r\u1eb1ng b\u1ea1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n \u0111\u00f3.<\/li>\n<li><strong>C\u1ea5p ch\u1ee9ng ch\u1ec9<\/strong>: Sau khi Let\u2019s Encrypt x\u00e1c minh r\u1eb1ng t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n \u0111\u1ea1t chu\u1ea9n, h\u1ecd s\u1ebd c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed cho website c\u1ee7a b\u1ea1n. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua ch\u1eef k\u00fd s\u1ed1 (digital signature), \u0111\u1ea3m b\u1ea3o t\u00ednh x\u00e1c th\u1ef1c v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a ch\u1ee9ng ch\u1ec9.<\/li>\n<li><strong>Thu h\u1ed3i ch\u1ee9ng ch\u1ec9<\/strong>: N\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 v\u1ea5n \u0111\u1ec1 n\u00e0o x\u1ea3y ra, Let\u2019s Encrypt c\u00f3 th\u1ec3 thu h\u1ed3i ch\u1ee9ng ch\u1ec9 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng t\u00ean mi\u1ec1n h\u1ee3p l\u1ec7 m\u1edbi c\u00f3 ch\u1ee9ng ch\u1ec9 SSL.<\/li>\n<\/ul>\n<p>Khi ch\u1ee9ng ch\u1ec9 SSL Let\u2019s Encrypt \u0111\u01b0\u1ee3c c\u1ea5p, t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n s\u1ebd chuy\u1ec3n t\u1eeb HTTP sang HTTPS, c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady v\u00e0 b\u1ea3o m\u1eadt cho ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp trang web.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Lets-Encrypt-dung-de-lam-gi\"><\/span>Let&#8217;s Encrypt d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u \u0111\u01a1n gi\u1ea3n, Let&#8217;s Encrypt cung c\u1ea5p c\u00e1c ch\u1ee9ng ch\u1ec9 s\u1ed1 X.509 cho m\u00e3 h\u00f3a B\u1ea3o m\u1eadt t\u1ea7ng truy\u1ec1n t\u1ea3i (TLS &#8211; Transport Layer Security). D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i c\u1ee7a ch\u1ee9ng ch\u1ec9 n\u00e0y trong m\u00f4i tr\u01b0\u1eddng internet.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ma-hoa-du-lieu-giua-trinh-duyet-va-server\"><\/span>M\u00e3 h\u00f3a d\u1eef li\u1ec7u gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9c n\u0103ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a Let&#8217;s Encrypt l\u00e0 thi\u1ebft l\u1eadp m\u1ed9t k\u00eanh truy\u1ec1n t\u1ea3i an to\u00e0n gi\u1eefa <a href=\"https:\/\/interdata.vn\/blog\/web-server\/\">m\u00e1y ch\u1ee7 web<\/a> (n\u01a1i l\u01b0u tr\u1eef website c\u1ee7a b\u1ea1n) v\u00e0 tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng (Chrome, Firefox, Safari&#8230;).<\/p>\n<p>Khi kh\u00f4ng c\u00f3 SSL, d\u1eef li\u1ec7u truy\u1ec1n \u0111i d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n (plain text). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 b\u1ea5t k\u1ef3 ai \u0111\u1ee9ng \u1edf gi\u1eefa k\u1ebft n\u1ed1i (hacker, nh\u00e0 cung c\u1ea5p m\u1ea1ng&#8230;) \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c n\u1ed9i dung \u0111\u00f3. Let&#8217;s Encrypt s\u1eed d\u1ee5ng c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/thuat-toan-algorithm\/\">thu\u1eadt to\u00e1n<\/a> m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd \u0111\u1ec3 bi\u1ebfn d\u1eef li\u1ec7u n\u00e0y th\u00e0nh c\u00e1c k\u00fd t\u1ef1 v\u00f4 ngh\u0129a, \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00f3 m\u00e1y ch\u1ee7 v\u00e0 tr\u00ecnh duy\u1ec7t \u0111\u00edch m\u1edbi c\u00f3 th\u1ec3 gi\u1ea3i m\u00e3 v\u00e0 \u0111\u1ecdc \u0111\u01b0\u1ee3c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bao-ve-thong-tin-dang-nhap-va-bieu-mau\"><\/span>B\u1ea3o v\u1ec7 th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0 bi\u1ec3u m\u1eabu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c website c\u00f3 t\u00ednh n\u0103ng \u0111\u0103ng k\u00fd th\u00e0nh vi\u00ean, \u0111\u0103ng nh\u1eadp ho\u1eb7c c\u00e1c bi\u1ec3u m\u1eabu li\u00ean h\u1ec7, vi\u1ec7c s\u1eed d\u1ee5ng SSL l\u00e0 b\u1eaft bu\u1ed9c. N\u1ebfu kh\u00f4ng c\u00f3 l\u1edbp m\u00e3 h\u00f3a n\u00e0y, th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 t\u00ean \u0111\u0103ng nh\u1eadp, m\u1eadt kh\u1ea9u, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i hay \u0111\u1ecba ch\u1ec9 email c\u1ee7a kh\u00e1ch h\u00e0ng r\u1ea5t d\u1ec5 b\u1ecb \u0111\u00e1nh c\u1eafp th\u00f4ng qua c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng trung gian (Man-in-the-Middle Attack).<\/p>\n<p>Let&#8217;s Encrypt gi\u00fap doanh nghi\u1ec7p b\u1ea3o v\u1ec7 t\u00e0i s\u1ea3n d\u1eef li\u1ec7u c\u1ee7a kh\u00e1ch h\u00e0ng, ng\u0103n ch\u1eb7n r\u1ee7i ro r\u00f2 r\u1ec9 th\u00f4ng tin ngay t\u1eeb kh\u00e2u truy\u1ec1n t\u1ea3i.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38268\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Lets-Encrypt-dung-de-lam-gi.jpg\" alt=\"Let&#039;s Encrypt d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Lets-Encrypt-dung-de-lam-gi.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Lets-Encrypt-dung-de-lam-gi-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Lets-Encrypt-dung-de-lam-gi-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kich-hoat-HTTPS-va-bieu-tuong-o-khoa\"><\/span>K\u00edch ho\u1ea1t HTTPS v\u00e0 bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi c\u00e0i \u0111\u1eb7t th\u00e0nh c\u00f4ng ch\u1ee9ng ch\u1ec9 t\u1eeb Let&#8217;s Encrypt, giao th\u1ee9c c\u1ee7a website s\u1ebd chuy\u1ec3n t\u1eeb http:\/\/ sang https:\/\/. \u0110\u1ed3ng th\u1eddi, tr\u00ean thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t s\u1ebd xu\u1ea5t hi\u1ec7n bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a. \u0110\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u tr\u1ef1c quan gi\u00fap ng\u01b0\u1eddi d\u00f9ng nh\u1eadn bi\u1ebft website n\u00e0y an to\u00e0n \u0111\u1ec3 truy c\u1eadp v\u00e0 t\u01b0\u01a1ng t\u00e1c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lien-he-mat-thiet-voi-SEO-UX\"><\/span>Li\u00ean h\u1ec7 m\u1eadt thi\u1ebft v\u1edbi SEO &amp; UX<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Google v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm kh\u00e1c \u0111\u00e3 x\u00e1c nh\u1eadn HTTPS l\u00e0 m\u1ed9t t\u00edn hi\u1ec7u x\u1ebfp h\u1ea1ng (Ranking Signal).<\/p>\n<ul>\n<li><strong>V\u1ec1 <a href=\"https:\/\/interdata.vn\/blog\/seo-la-gi\/\">SEO<\/a> (T\u1ed1i \u01b0u h\u00f3a c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm):<\/strong> C\u00e1c website s\u1eed d\u1ee5ng HTTPS th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean hi\u1ec3n th\u1ecb cao h\u01a1n trong k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm so v\u1edbi c\u00e1c website ch\u1ec9 d\u00f9ng HTTP, n\u1ebfu c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c ngang b\u1eb1ng.<\/li>\n<li><strong>V\u1ec1 UX (<a href=\"https:\/\/interdata.vn\/blog\/ux-la-gi\/\">Tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/a>):<\/strong> C\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i nh\u01b0 Chrome s\u1ebd c\u1ea3nh b\u00e1o &#8220;Kh\u00f4ng b\u1ea3o m\u1eadt&#8221; (Not Secure) m\u00e0u \u0111\u1ecf r\u1ea5t n\u1ed5i b\u1eadt n\u1ebfu trang web kh\u00f4ng c\u00f3 SSL. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m ni\u1ec1m tin c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u0103ng t\u1ef7 l\u1ec7 tho\u00e1t trang (Bounce Rate).<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Loi-ich-khi-su-dung-SSL-Lets-Encrypt\"><\/span>L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng SSL Let\u2019s Encrypt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean m\u00e0 Let&#8217;s Encrypt tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho h\u00e0ng tri\u1ec7u qu\u1ea3n tr\u1ecb vi\u00ean website. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u1ee3i \u00edch thi\u1ebft th\u1ef1c m\u00e0 gi\u1ea3i ph\u00e1p n\u00e0y mang l\u1ea1i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mien-phi-va-de-trien-khai\"><\/span>Mi\u1ec5n ph\u00ed v\u00e0 d\u1ec5 tri\u1ec3n khai<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 \u01b0u \u0111i\u1ec3m l\u1edbn nh\u1ea5t v\u00e0 d\u1ec5 th\u1ea5y nh\u1ea5t. Tr\u01b0\u1edbc \u0111\u00e2y, \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c ch\u1ee9ng ch\u1ec9 SSL, ch\u1ee7 website ph\u1ea3i b\u1ecf ra t\u1eeb v\u00e0i tr\u0103m ngh\u00ecn \u0111\u1ebfn v\u00e0i tri\u1ec7u \u0111\u1ed3ng m\u1ed7i n\u0103m. Let&#8217;s Encrypt lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n r\u00e0o c\u1ea3n t\u00e0i ch\u00ednh n\u00e0y. B\u1ea5t k\u1ef3 ai s\u1edf h\u1eefu t\u00ean mi\u1ec1n \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd m\u1ed9t ch\u1ee9ng ch\u1ec9 tin c\u1eady m\u00e0 kh\u00f4ng t\u1ed1n chi ph\u00ed. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u00fd ngh\u0129a v\u1edbi c\u00e1c b\u1ea1n sinh vi\u00ean, c\u00e1c blogger c\u00e1 nh\u00e2n ho\u1eb7c c\u00e1c d\u1ef1 \u00e1n kh\u1edfi nghi\u1ec7p \u0111ang c\u1ea7n t\u1ed1i \u01b0u ng\u00e2n s\u00e1ch v\u1eadn h\u00e0nh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tu-dong-hoa-cao-voi-giao-thuc-ACME\"><\/span>T\u1ef1 \u0111\u1ed9ng h\u00f3a cao v\u1edbi giao th\u1ee9c ACME<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Let&#8217;s Encrypt ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean giao th\u1ee9c M\u00f4i tr\u01b0\u1eddng Qu\u1ea3n l\u00fd Ch\u1ee9ng ch\u1ec9 T\u1ef1 \u0111\u1ed9ng (ACME &#8211; Automated Certificate Management Environment). Kh\u00e1c v\u1edbi quy tr\u00ecnh mua SSL tr\u1ea3 ph\u00ed truy\u1ec1n th\u1ed1ng (t\u1ea1o <a href=\"https:\/\/interdata.vn\/blog\/client-side-rendering-csr-la-gi\/\">CSR<\/a>, g\u1eedi email x\u00e1c nh\u1eadn, ch\u1edd x\u00e9t duy\u1ec7t, c\u00e0i \u0111\u1eb7t th\u1ee7 c\u00f4ng), Let&#8217;s Encrypt cho ph\u00e9p m\u00e1y ch\u1ee7 web t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi CA \u0111\u1ec3 l\u1ea5y ch\u1ee9ng ch\u1ec9.<\/p>\n<p>M\u1ecdi thao t\u00e1c t\u1eeb x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n \u0111\u1ebfn c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1c d\u00f2ng l\u1ec7nh ho\u1eb7c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 m\u00e0 kh\u00f4ng c\u1ea7n can thi\u1ec7p th\u1ee7 c\u00f4ng qu\u00e1 nhi\u1ec1u.<\/p>\n<figure id=\"attachment_38269\" aria-describedby=\"caption-attachment-38269\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38269\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-ich-khi-su-dung-SSL-Lets-Encrypt.jpg\" alt=\"L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng SSL Let\u2019s Encrypt\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-ich-khi-su-dung-SSL-Lets-Encrypt.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-ich-khi-su-dung-SSL-Lets-Encrypt-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-ich-khi-su-dung-SSL-Lets-Encrypt-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-38269\" class=\"wp-caption-text\">L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng SSL Let\u2019s Encrypt<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cai-thien-SEO-va-do-tin-cay-website\"><\/span>C\u1ea3i thi\u1ec7n SEO v\u00e0 \u0111\u1ed9 tin c\u1eady website<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp, Google r\u1ea5t \u01b0u \u00e1i c\u00e1c website c\u00f3 HTTPS. Vi\u1ec7c tri\u1ec3n khai Let&#8217;s Encrypt gi\u00fap b\u1ea1n nhanh ch\u00f3ng \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt c\u1ee7a Google. H\u01a1n n\u1eefa, v\u1edbi \u1ed5 kh\u00f3a b\u1ea3o m\u1eadt, kh\u00e1ch h\u00e0ng s\u1ebd c\u1ea3m th\u1ea5y y\u00ean t\u00e2m h\u01a1n khi \u0111\u1ec3 l\u1ea1i th\u00f4ng tin ho\u1eb7c th\u1ef1c hi\u1ec7n giao d\u1ecbch tr\u00ean website c\u1ee7a b\u1ea1n. S\u1ef1 tin c\u1eady n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i (Conversion Rate).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"De-dang-cai-dat-Tich-hop-san-trong-cPanel-DirectAdmin-hoac-dung-Certbot\"><\/span>D\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t: T\u00edch h\u1ee3p s\u1eb5n trong cPanel, DirectAdmin ho\u1eb7c d\u00f9ng Certbot<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u00ednh ph\u1ed5 bi\u1ebfn c\u1ee7a Let&#8217;s Encrypt \u0111\u00e3 khi\u1ebfn h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 cung c\u1ea5p Hosting v\u00e0 Control Panel t\u00edch h\u1ee3p s\u1eb5n n\u00f3 v\u00e0o h\u1ec7 th\u1ed1ng.<\/p>\n<ul>\n<li><strong>V\u1edbi ng\u01b0\u1eddi d\u00f9ng Hosting:<\/strong> Tr\u00ean <a href=\"https:\/\/interdata.vn\/blog\/cpanel\/\">cPanel<\/a> ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/directadmin-la-gi\/\">DirectAdmin<\/a>, b\u1ea1n th\u01b0\u1eddng ch\u1ec9 c\u1ea7n t\u00ecm m\u1ee5c &#8220;SSL\/TLS Status&#8221; ho\u1eb7c &#8220;Let&#8217;s Encrypt SSL&#8221;, <a href=\"https:\/\/interdata.vn\/blog\/cach-chon-ten-mien-dep\/\">ch\u1ecdn t\u00ean mi\u1ec1n<\/a> v\u00e0 nh\u1ea5n n\u00fat &#8220;Install&#8221;. Qu\u00e1 tr\u00ecnh di\u1ec5n ra ch\u01b0a \u0111\u1ea7y 1 ph\u00fat.<\/li>\n<li><strong>V\u1edbi ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb VPS\/Server:<\/strong> C\u1ed9ng \u0111\u1ed3ng ph\u00e1t tri\u1ec3n r\u1ea5t nhi\u1ec1u c\u00f4ng c\u1ee5 (client), trong \u0111\u00f3 ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 <strong>Certbot<\/strong>. Ch\u1ec9 v\u1edbi v\u00e0i c\u00e2u l\u1ec7nh \u0111\u01a1n gi\u1ea3n tr\u00ean <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh-linux-la-gi\/\">Linux<\/a>, Certbot s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u1ea5u h\u00ecnh <a href=\"https:\/\/interdata.vn\/blog\/nginx-la-gi\/\">Nginx<\/a> ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/apache-la-gi\/\">Apache<\/a> \u0111\u1ec3 s\u1eed d\u1ee5ng SSL.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Bao-mat-Su-dung-chuan-ma-hoa-manh-tuong-duong-SSL-tra-phi\"><\/span>B\u1ea3o m\u1eadt: S\u1eed d\u1ee5ng chu\u1ea9n m\u00e3 h\u00f3a m\u1ea1nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng SSL tr\u1ea3 ph\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 &#8220;\u0111\u1ed3 mi\u1ec5n ph\u00ed th\u00ec k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng&#8221;. Th\u1ef1c t\u1ebf, x\u00e9t v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt m\u00e3 h\u00f3a, Let&#8217;s Encrypt kh\u00f4ng h\u1ec1 thua k\u00e9m c\u00e1c ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed \u0111\u1eaft ti\u1ec1n. N\u00f3 s\u1eed d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a c\u00f4ng nghi\u1ec7p m\u1edbi nh\u1ea5t nh\u01b0 RSA 2048-bit ho\u1eb7c ECDSA 256-bit. D\u1eef li\u1ec7u \u0111i qua Let&#8217;s Encrypt c\u0169ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 an to\u00e0n y h\u1ec7t nh\u01b0 d\u1eef li\u1ec7u \u0111i qua m\u1ed9t ch\u1ee9ng ch\u1ec9 c\u1ee7a GeoTrust hay DigiCert \u1edf m\u1ee9c \u0111\u1ed9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (DV).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tu-dong-gia-han-Giam-thieu-rui-ro-quen-gia-han\"><\/span>T\u1ef1 \u0111\u1ed9ng gia h\u1ea1n: Gi\u1ea3m thi\u1ec3u r\u1ee7i ro qu\u00ean gia h\u1ea1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9ng ch\u1ec9 h\u1ebft h\u1ea1n l\u00e0 c\u01a1n \u00e1c m\u1ed9ng c\u1ee7a qu\u1ea3n tr\u1ecb vi\u00ean, v\u00ec tr\u00ecnh duy\u1ec7t s\u1ebd hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o \u0111\u1ecf r\u1ef1c ng\u0103n ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp. V\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed, b\u1ea1n ph\u1ea3i nh\u1edb ng\u00e0y h\u1ebft h\u1ea1n \u0111\u1ec3 mua m\u1edbi v\u00e0 c\u00e0i \u0111\u1eb7t l\u1ea1i.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c c\u00f4ng c\u1ee5 c\u00e0i \u0111\u1eb7t Let&#8217;s Encrypt (nh\u01b0 Certbot) th\u01b0\u1eddng \u0111i k\u00e8m t\u00ednh n\u0103ng Cronjob (t\u00e1c v\u1ee5 \u0111\u1ecbnh k\u1ef3) \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng ki\u1ec3m tra v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 tr\u01b0\u1edbc khi n\u00f3 h\u1ebft hi\u1ec7u l\u1ef1c. H\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 ch\u1ea1y ng\u1ea7m, gi\u00fap website lu\u00f4n duy tr\u00ec tr\u1ea1ng th\u00e1i b\u1ea3o m\u1eadt li\u00ean t\u1ee5c.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20363 aligncenter\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Co-nen-su-dung-chung-chi-SSL-mien-phi-tu-Lets-Encrypt-cho-Website.png\" alt=\"C\u00f3 n\u00ean s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed t\u1eeb Let&#039;s Encrypt cho Website\" width=\"728\" height=\"380\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Co-nen-su-dung-chung-chi-SSL-mien-phi-tu-Lets-Encrypt-cho-Website.png 728w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Co-nen-su-dung-chung-chi-SSL-mien-phi-tu-Lets-Encrypt-cho-Website-300x157.png 300w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/p>\n<p>C\u00e0i \u0111\u1eb7t SSL l\u00e0 ti\u00eau chu\u1ea9n b\u1eaft bu\u1ed9c, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 t\u1ea5t c\u1ea3. B\u00ean c\u1ea1nh ch\u1ee9ng ch\u1ec9 s\u1ed1, c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c trong <strong><a href=\"https:\/\/interdata.vn\/blog\/bao-mat-hosting-cpanel\/\">quy tr\u00ecnh b\u1ea3o m\u1eadt Hosting cPanel<\/a><\/strong> c\u0169ng \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c duy tr\u00ec uy t\u00edn c\u1ee7a website.&#8221;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Han-che-cua-Lets-Encrypt-can-biet\"><\/span>H\u1ea1n ch\u1ebf c\u1ee7a Let\u2019s Encrypt c\u1ea7n bi\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i, Let&#8217;s Encrypt kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p. B\u1ea1n c\u1ea7n n\u1eafm r\u00f5 c\u00e1c h\u1ea1n ch\u1ebf d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 c\u00f3 quy\u1ebft \u0111\u1ecbnh ch\u00ednh x\u00e1c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thoi-han-chung-chi-ngan-90-ngay\"><\/span>Th\u1eddi h\u1ea1n ch\u1ee9ng ch\u1ec9 ng\u1eafn (90 ng\u00e0y)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9ng ch\u1ec9 Let&#8217;s Encrypt ch\u1ec9 c\u00f3 hi\u1ec7u l\u1ef1c trong v\u00f2ng 90 ng\u00e0y. Trong khi \u0111\u00f3, c\u00e1c ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed th\u01b0\u1eddng c\u00f3 th\u1eddi h\u1ea1n 1 n\u0103m.<\/p>\n<ul>\n<li><strong>L\u00fd do:<\/strong> ISRG thi\u1ebft l\u1eadp th\u1eddi h\u1ea1n ng\u1eafn \u0111\u1ec3 khuy\u1ebfn kh\u00edch t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro n\u1ebfu m\u00e3 kh\u00f3a b\u00ed m\u1eadt (private key) b\u1ecb l\u1ed9. N\u1ebfu hacker \u0111\u00e1nh c\u1eafp \u0111\u01b0\u1ee3c kh\u00f3a, h\u1ecd ch\u1ec9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00f3 trong th\u1eddi gian ng\u1eafn.<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng:<\/strong> N\u1ebfu h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n g\u1eb7p l\u1ed7i (do c\u1ea5u h\u00ecnh sai, <a href=\"https:\/\/interdata.vn\/blog\/tuong-lua-firewall\/\">t\u01b0\u1eddng l\u1eeda<\/a> ch\u1eb7n&#8230;), website c\u1ee7a b\u1ea1n s\u1ebd b\u1ecb gi\u00e1n \u0111o\u1ea1n sau 3 th\u00e1ng.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Khong-ho-tro-EVOV-SSL-Chi-co-DV-SSL\"><\/span>Kh\u00f4ng h\u1ed7 tr\u1ee3 EV\/OV SSL (Ch\u1ec9 c\u00f3 DV SSL)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Let&#8217;s Encrypt ch\u1ec9 cung c\u1ea5p ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (Domain Validation &#8211; DV). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 CA ch\u1ec9 x\u00e1c nh\u1eadn b\u1ea1n l\u00e0 ng\u01b0\u1eddi ki\u1ec3m so\u00e1t t\u00ean mi\u1ec1n \u0111\u00f3, ch\u1ee9 kh\u00f4ng x\u00e1c minh danh t\u00ednh t\u1ed5 ch\u1ee9c hay doanh nghi\u1ec7p s\u1edf h\u1eefu t\u00ean mi\u1ec1n.<\/p>\n<ul>\n<li><strong>OV (Organization Validation):<\/strong> X\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c.<\/li>\n<li><strong>EV (Extended Validation):<\/strong> X\u00e1c th\u1ef1c m\u1edf r\u1ed9ng (th\u01b0\u1eddng hi\u1ec3n th\u1ecb t\u00ean c\u00f4ng ty tr\u00ean thanh \u0111\u1ecba ch\u1ec9 ho\u1eb7c trong chi ti\u1ebft ch\u1ee9ng ch\u1ec9).<br \/>\nC\u00e1c doanh nghi\u1ec7p l\u1edbn c\u1ea7n kh\u1eb3ng \u0111\u1ecbnh th\u01b0\u01a1ng hi\u1ec7u v\u00e0 ph\u00e1p nh\u00e2n tr\u00ean m\u00f4i tr\u01b0\u1eddng m\u1ea1ng s\u1ebd kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y v\u1edbi Let&#8217;s Encrypt.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Phu-thuoc-vao-cau-hinh-server\"><\/span>Ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Do t\u00ednh ch\u1ea5t t\u1ef1 \u0111\u1ed9ng h\u00f3a, Let&#8217;s Encrypt y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i c\u00f3 quy\u1ec1n truy c\u1eadp nh\u1ea5t \u0111\u1ecbnh v\u00e0o c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 ho\u1eb7c hosting ph\u1ea3i h\u1ed7 tr\u1ee3 module t\u01b0\u01a1ng \u1ee9ng. Tr\u00ean m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng hosting c\u0169, chia s\u1ebb t\u00e0i nguy\u00ean h\u1ea1n ch\u1ebf ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng n\u1ed9i b\u1ed9 (Intranet) b\u1ecb ch\u1eb7n k\u1ebft n\u1ed1i ra qu\u1ed1c t\u1ebf, vi\u1ec7c c\u00e0i \u0111\u1eb7t v\u00e0 gia h\u1ea1n Let&#8217;s Encrypt c\u00f3 th\u1ec3 g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n k\u1ef9 thu\u1eadt.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Khong-co-bao-hiem-va-che-do-bao-hanh\"><\/span>Kh\u00f4ng c\u00f3 b\u1ea3o hi\u1ec3m v\u00e0 ch\u1ebf \u0111\u1ed9 b\u1ea3o h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi mua SSL tr\u1ea3 ph\u00ed, b\u1ea1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u00e8m theo m\u1ed9t g\u00f3i b\u1ea3o hi\u1ec3m t\u00e0i ch\u00ednh (v\u00ed d\u1ee5: 10.000 &#8211; 1.000.000). Kho\u1ea3n ti\u1ec1n n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ec1n b\u00f9 n\u1ebfu nguy\u00ean nh\u00e2n g\u00e2y r\u00f2 r\u1ec9 d\u1eef li\u1ec7u xu\u1ea5t ph\u00e1t t\u1eeb l\u1ed7i k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 cung c\u1ea5p ch\u1ee9ng ch\u1ec9 (CA). V\u1edbi Let&#8217;s Encrypt, v\u00ec l\u00e0 d\u1ecbch v\u1ee5 mi\u1ec5n ph\u00ed, b\u1ea1n kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c b\u1ea5t k\u1ef3 kho\u1ea3n b\u1ea3o hi\u1ec3m n\u00e0o. M\u1ecdi r\u1ee7i ro trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng \u0111\u1ec1u do ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb t\u1ef1 ch\u1ecbu tr\u00e1ch nhi\u1ec7m.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ho-tro-han-che-Chu-yeu-dua-vao-cong-dong\"><\/span>H\u1ed7 tr\u1ee3 h\u1ea1n ch\u1ebf: Ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o c\u1ed9ng \u0111\u1ed3ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Let&#8217;s Encrypt <strong>kh\u00f4ng c\u00f3 \u0111\u1ed9i ng\u0169 ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng 24\/7<\/strong> \u0111\u1ec3 tr\u1ea3 l\u1eddi email hay nghe \u0111i\u1ec7n tho\u1ea1i c\u1ee7a b\u1ea1n. N\u1ebfu g\u1eb7p l\u1ed7i trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t, b\u1ea1n ph\u1ea3i t\u1ef1 t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p tr\u00ean c\u00e1c di\u1ec5n \u0111\u00e0n c\u1ed9ng \u0111\u1ed3ng (Community Forum) ho\u1eb7c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt (Documentation). \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c k\u1ef9 thu\u1eadt nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 t\u1ef1 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Chung-chi-Lets-Encrypt-SSL-co-gia-tri-trong-bao-lau\"><\/span>Ch\u1ee9ng ch\u1ec9 Let&#8217;s Encrypt SSL c\u00f3 gi\u00e1 tr\u1ecb trong bao l\u00e2u?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ch\u1ee9ng ch\u1ec9 SSL c\u1ee7a Let&#8217;s Encrypt c\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn, trong \u0111\u00f3 c\u00f3 Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (Domain Validation Certificate) v\u00e0 Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chung-chi-xac-thuc-ten-mien-DV\"><\/span>Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (DV)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i ch\u1ee9ng ch\u1ec9 x\u00e1c nh\u1eadn r\u1eb1ng b\u1ea1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n m\u00e0 b\u1ea1n y\u00eau c\u1ea7u c\u1ea5p ch\u1ee9ng ch\u1ec9. Let&#8217;s Encrypt s\u1ebd t\u1ef1 \u0111\u1ed9ng x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n th\u00f4ng qua c\u00e1c ph\u01b0\u01a1ng th\u1ee9c nh\u01b0 HTTP, <a href=\"https:\/\/interdata.vn\/blog\/dns-la-gi\/\">DNS<\/a>, ho\u1eb7c TLS-ALPN challenges.<\/p>\n<p>Lo\u1ea1i ch\u1ee9ng ch\u1ec9 n\u00e0y ch\u1ec9 x\u00e1c nh\u1eadn t\u00ean mi\u1ec1n \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng th\u1ef1c m\u00e0 kh\u00f4ng ch\u1ee9a b\u1ea5t k\u1ef3 th\u00f4ng tin n\u00e0o v\u1ec1 t\u1ed5 ch\u1ee9c ho\u1eb7c c\u00f4ng ty s\u1edf h\u1eefu t\u00ean mi\u1ec1n \u0111\u00f3. Ch\u00ednh v\u00ec th\u1ebf, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ecdn b\u1edfi nh\u1eefng ai mu\u1ed1n b\u1ea3o v\u1ec7 t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 d\u1ec5 d\u00e0ng.<\/p>\n<figure id=\"attachment_20364\" aria-describedby=\"caption-attachment-20364\" style=\"width: 737px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20364\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-xac-thuc-ten-mien-DV.jpg\" alt=\"Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (DV)\" width=\"737\" height=\"444\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-xac-thuc-ten-mien-DV.jpg 737w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-xac-thuc-ten-mien-DV-300x181.jpg 300w\" sizes=\"auto, (max-width: 737px) 100vw, 737px\" \/><figcaption id=\"caption-attachment-20364\" class=\"wp-caption-text\">Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n (DV)<\/figcaption><\/figure>\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 n\u00e0y cho nhi\u1ec1u lo\u1ea1i m\u00e1y ch\u1ee7 kh\u00e1c nhau nh\u01b0 m\u00e1y ch\u1ee7 web, m\u00e1y ch\u1ee7 email, m\u00e1y ch\u1ee7 <a href=\"https:\/\/interdata.vn\/blog\/ftp-la-gi\/\">FTP<\/a>,\u2026 N\u00f3 l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p cho c\u00e1c trang web c\u00e1 nh\u00e2n, <a href=\"https:\/\/interdata.vn\/blog\/blog-la-gi\/\">blog<\/a>, ho\u1eb7c c\u00e1c website nh\u1ecf kh\u00f4ng y\u00eau c\u1ea7u x\u00e1c th\u1ef1c t\u1ed5 ch\u1ee9c.<\/p>\n<p><strong>L\u1ee3i \u00edch:<\/strong><\/p>\n<ul>\n<li>\u0110\u01b0\u1ee3c c\u1ea5p ph\u00e1t nhanh ch\u00f3ng v\u00e0 d\u1ec5 d\u00e0ng.<\/li>\n<li>Cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao nh\u1edd m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd, gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n<p>Ch\u1ee9ng ch\u1ec9 x\u00e1c th\u1ef1c t\u00ean mi\u1ec1n c\u1ee7a Let&#8217;s Encrypt l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 cho nh\u1eefng ai mu\u1ed1n b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn c\u00e1c th\u1ee7 t\u1ee5c ph\u1ee9c t\u1ea1p, \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p cho c\u00e1c trang web c\u00e1 nh\u00e2n ho\u1eb7c doanh nghi\u1ec7p nh\u1ecf.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chung-chi-ky-tu-dai-dien\"><\/span>Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (Wildcard Certificate) l\u00e0 m\u1ed9t lo\u1ea1i ch\u1ee9ng ch\u1ec9 SSL\/TLS gi\u00fap b\u1ea3o v\u1ec7 c\u1ea3 t\u00ean mi\u1ec1n ch\u00ednh v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n ph\u1ee5 (subdomains) li\u00ean quan.<\/p>\n<p>Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng d\u1ea5u sao (*) tr\u01b0\u1edbc t\u00ean mi\u1ec1n, cho ph\u00e9p bao ph\u1ee7 m\u1ecdi t\u00ean mi\u1ec1n ph\u1ee5. V\u00ed d\u1ee5, m\u1ed9t ch\u1ee9ng ch\u1ec9 wildcard cho *.example.com s\u1ebd b\u1ea3o v\u1ec7 c\u00e1c t\u00ean mi\u1ec1n ph\u1ee5 nh\u01b0:<\/p>\n<ul>\n<li><a href=\"https:\/\/interdata.vn\/blog\/world-wide-web\/\">www<\/a>.example.com<\/li>\n<li>mail.example.com<\/li>\n<li>blog.example.com<\/li>\n<\/ul>\n<p>\u0110\u1ec3 nh\u1eadn ch\u1ee9ng ch\u1ec9 wildcard t\u1eeb Let&#8217;s Encrypt, b\u1ea1n c\u1ea7n x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n th\u00f4ng qua ph\u01b0\u01a1ng th\u1ee9c DNS-01 challenge. \u0110i\u1ec1u n\u00e0y y\u00eau c\u1ea7u b\u1ea1n th\u00eam m\u1ed9t b\u1ea3n ghi TXT v\u00e0o c\u00e0i \u0111\u1eb7t DNS c\u1ee7a t\u00ean mi\u1ec1n \u0111\u1ec3 ch\u1ee9ng minh r\u1eb1ng b\u1ea1n c\u00f3 quy\u1ec1n qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n<figure id=\"attachment_20365\" aria-describedby=\"caption-attachment-20365\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20365\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-ky-tu-dai-dien-Wildcard-Certificate.webp\" alt=\"Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (Wildcard Certificate)\" width=\"800\" height=\"532\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-ky-tu-dai-dien-Wildcard-Certificate.webp 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-ky-tu-dai-dien-Wildcard-Certificate-300x200.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-ky-tu-dai-dien-Wildcard-Certificate-768x511.webp 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Chung-chi-ky-tu-dai-dien-Wildcard-Certificate-750x499.webp 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-20365\" class=\"wp-caption-text\">Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n (Wildcard Certificate)<\/figcaption><\/figure>\n<p><strong>L\u1ee3i \u00edch:<\/strong><\/p>\n<ul>\n<li><strong>B\u1ea3o v\u1ec7 to\u00e0n di\u1ec7n<\/strong>: Ch\u1ee9ng ch\u1ec9 n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 t\u1ea5t c\u1ea3 c\u00e1c t\u00ean mi\u1ec1n ph\u1ee5 d\u01b0\u1edbi c\u00f9ng m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh, gi\u00fap b\u1ea3o m\u1eadt trang web c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch to\u00e0n di\u1ec7n.<\/li>\n<li><strong>Ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 th\u1eddi gian<\/strong>: Thay v\u00ec s\u1eed d\u1ee5ng nhi\u1ec1u ch\u1ee9ng ch\u1ec9 SSL ri\u00eang l\u1ebb cho t\u1eebng t\u00ean mi\u1ec1n ph\u1ee5, b\u1ea1n ch\u1ec9 c\u1ea7n m\u1ed9t ch\u1ee9ng ch\u1ec9 wildcard, gi\u00fap gi\u1ea3m b\u1edbt chi ph\u00ed v\u00e0 th\u1eddi gian qu\u1ea3n l\u00fd.<\/li>\n<\/ul>\n<p>Ch\u1ee9ng ch\u1ec9 k\u00fd t\u1ef1 \u0111\u1ea1i di\u1ec7n l\u00e0 gi\u1ea3i ph\u00e1p l\u00fd t\u01b0\u1edfng cho nh\u1eefng ai mu\u1ed1n b\u1ea3o v\u1ec7 nhi\u1ec1u t\u00ean mi\u1ec1n ph\u1ee5 v\u1edbi chi ph\u00ed h\u1ee3p l\u00fd v\u00e0 quy tr\u00ecnh qu\u1ea3n l\u00fd \u0111\u01a1n gi\u1ea3n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-nen-va-khong-nen-dung-Lets-Encrypt\"><\/span>Khi n\u00e0o n\u00ean v\u00e0 kh\u00f4ng n\u00ean d\u00f9ng Let\u2019s Encrypt?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>D\u1ef1a tr\u00ean ph\u00e2n t\u00edch \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m, <strong>InterData<\/strong> \u0111\u01b0a ra c\u00e1c khuy\u1ebfn ngh\u1ecb c\u1ee5 th\u1ec3 cho t\u1eebng nh\u00f3m \u0111\u1ed1i t\u01b0\u1ee3ng nh\u01b0 sau.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Truong-hop-nen-su-dung\"><\/span>Tr\u01b0\u1eddng h\u1ee3p n\u00ean s\u1eed d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Let&#8217;s Encrypt l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn ho\u00e0n h\u1ea3o cho kho\u1ea3ng 80-90% c\u00e1c website tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay:<\/p>\n<ul>\n<li><strong>Blog c\u00e1 nh\u00e2n, trang tin t\u1ee9c:<\/strong> N\u01a1i kh\u00f4ng di\u1ec5n ra c\u00e1c giao d\u1ecbch t\u00e0i ch\u00ednh l\u1edbn.<\/li>\n<li><strong>Website gi\u1edbi thi\u1ec7u c\u00f4ng ty (Corporate Site):<\/strong> C\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/web-tinh-la-gi\/\">trang web t\u0129nh<\/a> ho\u1eb7c \u00edt ch\u1ee9c n\u0103ng ph\u1ee9c t\u1ea1p.<\/li>\n<li><strong>Doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf (SME):<\/strong> C\u1ea7n ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o ti\u00eau chu\u1ea9n b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n.<\/li>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/landing-page-la-gi\/\">Landing Page<\/a>:<\/strong> C\u00e1c trang \u0111\u00edch ch\u1ea1y qu\u1ea3ng c\u00e1o ng\u1eafn h\u1ea1n.<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n (Dev\/Staging):<\/strong> C\u00e1c server d\u00f9ng \u0111\u1ec3 ki\u1ec3m th\u1eed tr\u01b0\u1edbc khi \u0111\u01b0a ra th\u1ecb tr\u01b0\u1eddng.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Truong-hop-nen-can-nhac-SSL-tra-phi\"><\/span>Tr\u01b0\u1eddng h\u1ee3p n\u00ean c\u00e2n nh\u1eafc SSL tr\u1ea3 ph\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n n\u00ean \u0111\u1ea7u t\u01b0 ng\u00e2n s\u00e1ch cho c\u00e1c ch\u1ee9ng ch\u1ec9 OV ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/ev-ssl\/\">EV SSL<\/a> trong c\u00e1c t\u00ecnh hu\u1ed1ng sau:<\/p>\n<ul>\n<li><strong>Website T\u00e0i ch\u00ednh &#8211; Ng\u00e2n h\u00e0ng:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng Internet Banking, v\u00ed \u0111i\u1ec7n t\u1eed y\u00eau c\u1ea7u m\u1ee9c \u0111\u1ed9 tin c\u1eady tuy\u1ec7t \u0111\u1ed1i.<\/li>\n<li><strong>S\u00e0n Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed l\u1edbn:<\/strong> N\u01a1i l\u01b0u tr\u1eef th\u00f4ng tin th\u1ebb t\u00edn d\u1ee5ng v\u00e0 di\u1ec5n ra h\u00e0ng ngh\u00ecn giao d\u1ecbch m\u1ed7i ng\u00e0y. Vi\u1ec7c hi\u1ec3n th\u1ecb t\u00ean c\u00f4ng ty trong ch\u1ee9ng ch\u1ec9 EV gi\u00fap t\u0103ng l\u00f2ng tin kh\u00e1ch h\u00e0ng v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro l\u1eeba \u0111\u1ea3o (<a href=\"https:\/\/interdata.vn\/blog\/tan-cong-phishing-la-gi\/\">Phishing<\/a>).<\/li>\n<li><strong>Website Ch\u00ednh ph\u1ee7:<\/strong> C\u00e1c c\u1ed5ng th\u00f4ng tin h\u00e0nh ch\u00ednh c\u00f4ng c\u1ea7n x\u00e1c th\u1ef1c \u0111\u1ecbnh danh r\u00f5 r\u00e0ng.<\/li>\n<li><strong>Doanh nghi\u1ec7p c\u1ea7n b\u1ea3o hi\u1ec3m:<\/strong> Khi ch\u00ednh s\u00e1ch qu\u1ea3n tr\u1ecb r\u1ee7i ro c\u1ee7a c\u00f4ng ty y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 b\u1ea3o hi\u1ec3m tr\u00e1ch nhi\u1ec7m t\u1eeb b\u00ean th\u1ee9 ba.<\/li>\n<\/ul>\n<div class=\"highlight-cta-box\">\n<p>\u0110\u1ec3 c\u00e0i \u0111\u1eb7t v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt t\u1ef1 \u0111\u1ed9ng, website c\u1ea7n \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh tr\u00ean m\u00f4i tr\u01b0\u1eddng m\u00e1y ch\u1ee7 \u1ed5n \u0111\u1ecbnh, <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">IP<\/a> s\u1ea1ch v\u00e0 to\u00e0n quy\u1ec1n c\u1ea5u h\u00ecnh. D\u1ecbch v\u1ee5 Thu\u00ea <a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\">VPS<\/a> t\u1ea1i InterData cung c\u1ea5p VPS hi\u1ec7u n\u0103ng cao, h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh\/\">h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a> ph\u1ed5 bi\u1ebfn, d\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t Let\u2019s Encrypt v\u1edbi Nginx ho\u1eb7c Apache ch\u1ec9 trong v\u00e0i ph\u00fat.<\/p>\n<p>V\u1edbi h\u1ea1 t\u1ea7ng \u0111\u1eb7t t\u1ea1i Vi\u1ec7t Nam, t\u1ed1c \u0111\u1ed9 truy c\u1eadp nhanh, h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt 24\/7 v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t, InterData l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p cho c\u00e1 nh\u00e2n, doanh nghi\u1ec7p \u0111ang x\u00e2y d\u1ef1ng website HTTPS an to\u00e0n \u2013 chu\u1ea9n SEO \u2013 \u0111\u00e1ng tin c\u1eady.<br \/>\n<a href=\"https:\/\/interdata.vn\/thue-vps\/\" class=\"button primary is-primary is-medium\">\n\t\t<span>Tham kh\u1ea3o ngay d\u1ecbch v\u1ee5 Thu\u00ea VPS t\u1ea1i InterData<\/span>\n\t<\/a>\n\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"So-sanh-Lets-Encrypt-mien-phi-va-chung-chi-SSL-tra-phi\"><\/span>So s\u00e1nh Let&#8217;s Encrypt mi\u1ec5n ph\u00ed v\u00e0 ch\u1ee9ng ch\u1ec9 SSL tr\u1ea3 ph\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>N\u00ean ch\u1ecdn Let&#8217;s Encrypt mi\u1ec5n ph\u00ed hay ch\u1ee9ng ch\u1ec9 SSL tr\u1ea3 ph\u00ed? \u0110\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi n\u00e0y, b\u1ea1n c\u1ea7n hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m, \u01b0u \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL v\u00e0 Let&#8217;s Encrypt l\u00e0 g\u00ec, t\u1eeb \u0111\u00f3 ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p nh\u1ea5t cho doanh nghi\u1ec7p c\u1ee7a m\u00ecnh.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38271\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/So-sanh-Lets-Encrypt-free-vs-chung-chi-SSL.jpg\" alt=\"So s\u00e1nh Let&#039;s Encrypt free vs ch\u1ee9ng ch\u1ec9 SSL\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/So-sanh-Lets-Encrypt-free-vs-chung-chi-SSL.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/So-sanh-Lets-Encrypt-free-vs-chung-chi-SSL-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/So-sanh-Lets-Encrypt-free-vs-chung-chi-SSL-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Uu-va-nhuoc-diem-cua-SSL-Lets-Encrypt\"><\/span>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SSL Let&#8217;s Encrypt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t s\u1ed1 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SSL Let&#8217;s Encrypt nh\u01b0 sau:<\/p>\n<table style=\"border-collapse: collapse; width: 826px; font-family: Arial, sans-serif; height: 384px;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #0d6efd; color: white;\">\n<th style=\"padding: 10px; text-align: center;\" colspan=\"2\"><span style=\"color: #ffffff;\">\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SSL Let&#8217;s Encrypt<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 10px; font-weight: bold;\"><span style=\"color: #000000;\">\u01afu \u0111i\u1ec3m<\/span><\/td>\n<td style=\"padding: 10px;\">\n<ul>\n<li><span style=\"color: #000000;\"><strong>B\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd:<\/strong> Let\u2019s Encrypt cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 SSL kh\u00e1c, gi\u00fap m\u00e3 h\u00f3a d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>D\u1ec5 d\u00e0ng s\u1eed d\u1ee5ng:<\/strong> Qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd v\u00e0 c\u00e0i \u0111\u1eb7t Let\u2019s Encrypt kh\u00e1 \u0111\u01a1n gi\u1ea3n, ch\u1ec9 y\u00eau c\u1ea7u ch\u1ee9ng th\u1ef1c t\u00ean mi\u1ec1n (Domain Validation), kh\u00f4ng c\u1ea7n th\u1ee7 t\u1ee5c ph\u1ee9c t\u1ea1p.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>Ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed:<\/strong> Let\u2019s Encrypt ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u00e1ng k\u1ec3 cho c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p nh\u1ecf.<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e9f3ff;\">\n<td style=\"padding: 10px; font-weight: bold;\"><span style=\"color: #000000;\">Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/span><\/td>\n<td style=\"padding: 10px;\">\n<ul>\n<li><span style=\"color: #000000;\"><strong>Kh\u00f4ng c\u00f3 b\u1ea3o h\u00e0nh:<\/strong> SSL c\u1ee7a Let\u2019s Encrypt ch\u1ec9 ch\u1ee9ng minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n v\u00e0 kh\u00f4ng k\u00e8m theo b\u1ea5t k\u1ef3 cam k\u1ebft b\u1ea3o h\u00e0nh n\u00e0o.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>Kh\u00f4ng ph\u00f9 h\u1ee3p cho c\u00e1c t\u1ed5 ch\u1ee9c l\u1edbn:<\/strong> C\u00e1c doanh nghi\u1ec7p l\u1edbn th\u01b0\u1eddng kh\u00f4ng ch\u1ecdn Let\u2019s Encrypt v\u00ec \u0111\u1ed9 tin c\u1eady kh\u00f4ng cao.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>Thi\u1ebfu t\u00ednh chuy\u00ean nghi\u1ec7p:<\/strong> M\u1ed9t s\u1ed1 kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 kh\u00f4ng c\u1ea3m th\u1ea5y an t\u00e2m v\u1edbi SSL mi\u1ec5n ph\u00ed.<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Uu-va-nhuoc-diem-cua-chung-chi-SSL-tra-phi\"><\/span>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u1ee9ng ch\u1ec9 SSL tr\u1ea3 ph\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9ng ch\u1ec9 SSL tr\u1ea3 ph\u00ed cung c\u1ea5p nhi\u1ec1u l\u1ef1a ch\u1ecdn cho c\u00e1c kh\u00e1ch h\u00e0ng c\u00f3 nhu c\u1ea7u b\u1ea3o m\u1eadt v\u00e0 ch\u1ee9ng th\u1ef1c kh\u00e1c nhau.<\/p>\n<table style=\"border-collapse: collapse; width: 825px; font-family: Arial, sans-serif; height: 302px;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #0d6efd; color: white;\">\n<th style=\"padding: 10px; text-align: center;\" colspan=\"2\"><span style=\"color: #ffffff;\">\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SSL tr\u1ea3 ph\u00ed<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 10px; font-weight: bold;\"><span style=\"color: #000000;\">\u01afu \u0111i\u1ec3m:<\/span><\/td>\n<td style=\"padding: 10px;\">\n<ul>\n<li><span style=\"color: #000000;\"><strong>B\u1ea3o m\u1eadt cao c\u1ea5p:<\/strong> SSL tr\u1ea3 ph\u00ed cung c\u1ea5p kh\u1ea3 n\u0103ng m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd v\u1edbi nhi\u1ec1u l\u1edbp b\u1ea3o v\u1ec7, ng\u0103n ch\u1eb7n hacker x\u00e2m nh\u1eadp.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>T\u1ea1o ni\u1ec1m tin cho kh\u00e1ch h\u00e0ng:<\/strong> SSL tr\u1ea3 ph\u00ed hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng tr\u00ean thanh \u0111\u1ecba ch\u1ec9, gi\u00fap ng\u01b0\u1eddi d\u00f9ng tin t\u01b0\u1edfng h\u01a1n khi giao d\u1ecbch.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>Linh ho\u1ea1t trong l\u1ef1a ch\u1ecdn:<\/strong> SSL tr\u1ea3 ph\u00ed c\u00f3 nhi\u1ec1u lo\u1ea1i ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u b\u1ea3o m\u1eadt kh\u00e1c nhau c\u1ee7a t\u1eebng doanh nghi\u1ec7p.<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e9f3ff;\">\n<td style=\"padding: 10px; font-weight: bold;\"><span style=\"color: #000000;\">Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/span><\/td>\n<td style=\"padding: 10px;\">\n<ul>\n<li><span style=\"color: #000000;\"><strong>Chi ph\u00ed:<\/strong> SSL tr\u1ea3 ph\u00ed y\u00eau c\u1ea7u mua ch\u1ee9ng ch\u1ec9, nh\u01b0ng kho\u1ea3n chi ph\u00ed n\u00e0y nh\u1ecf so v\u1edbi l\u1ee3i \u00edch v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 s\u1ef1 chuy\u00ean nghi\u1ec7p m\u00e0 n\u00f3 mang l\u1ea1i.<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>SSL tr\u1ea3 ph\u00ed l\u00e0 m\u1ed9t s\u1ef1 \u0111\u1ea7u t\u01b0 x\u1ee9ng \u0111\u00e1ng cho nh\u1eefng doanh nghi\u1ec7p mu\u1ed1n \u0111\u1ea3m b\u1ea3o an to\u00e0n t\u1ed1i \u0111a cho website c\u1ee7a m\u00ecnh, \u0111\u1ed3ng th\u1eddi t\u1ea1o ni\u1ec1m tin v\u00e0 uy t\u00edn v\u1edbi kh\u00e1ch h\u00e0ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-tao-chung-chi-SSL-mien-phi-voi-Lets-Encrypt\"><\/span>C\u00e1ch t\u1ea1o ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed v\u1edbi Let&#8217;s Encrypt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c c\u00e0i \u0111\u1eb7t Let\u2019s Encrypt SSL tr\u00ean website c\u1ee7a b\u1ea1n kh\u00e1 \u0111\u01a1n gi\u1ea3n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c b\u01b0\u1edbc h\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd v\u00e0 t\u1ea1o ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed t\u1eeb Let\u2019s Encrypt:<\/p>\n<figure id=\"attachment_20366\" aria-describedby=\"caption-attachment-20366\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20366\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Cai-dat-chung-chi-SSL-Lets-Encrypt-tu-Control-Panel.jpg\" alt=\"C\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL Let&#039;s Encrypt t\u1eeb Control Panel\" width=\"1000\" height=\"590\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Cai-dat-chung-chi-SSL-Lets-Encrypt-tu-Control-Panel.jpg 1000w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Cai-dat-chung-chi-SSL-Lets-Encrypt-tu-Control-Panel-300x177.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Cai-dat-chung-chi-SSL-Lets-Encrypt-tu-Control-Panel-768x453.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Cai-dat-chung-chi-SSL-Lets-Encrypt-tu-Control-Panel-750x443.jpg 750w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-20366\" class=\"wp-caption-text\">C\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 SSL Let&#8217;s Encrypt t\u1eeb Control Panel<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tao-SSL-Lets-Encrypt-tu-Control-Panel\"><\/span>T\u1ea1o SSL Let&#8217;s Encrypt t\u1eeb Control Panel<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>B\u01b0\u1edbc 1: \u0110\u0103ng nh\u1eadp v\u00e0o Control Panel<\/strong>: Sau khi \u0111\u00e3 c\u00f3 c\u1eb7p kh\u00f3a b\u1ea3o m\u1eadt c\u1ee7a Let\u2019s Encrypt, b\u1ea1n truy c\u1eadp v\u00e0o Control Panel v\u00e0 ch\u1ecdn t\u00ean mi\u1ec1n c\u1ea7n c\u00e0i \u0111\u1eb7t SSL.<\/p>\n<p><strong>B\u01b0\u1edbc 2: C\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9<\/strong>:<\/p>\n<ul>\n<li>Sao ch\u00e9p n\u1ed9i dung trong file fullchain.pem v\u00e0 d\u00e1n v\u00e0o \u00f4 Certificate (CRT).<\/li>\n<li>Sao ch\u00e9p n\u1ed9i dung trong file key.pem v\u00e0 d\u00e1n v\u00e0o \u00f4 Private Key (KEY).<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 3<\/strong>: Ho\u00e0n t\u1ea5t c\u00e0i \u0111\u1eb7t: Sau khi \u0111i\u1ec1n \u0111\u1ea7y \u0111\u1ee7 th\u00f4ng tin, b\u1ea1n ch\u1ecdn n\u00fat \u201cC\u00e0i \u0111\u1eb7t\u201d. Qu\u00e1 tr\u00ecnh n\u00e0y s\u1ebd di\u1ec5n ra trong v\u00e0i gi\u00e2y.<\/p>\n<p><strong>B\u01b0\u1edbc 4<\/strong>: Ki\u1ec3m tra c\u00e0i \u0111\u1eb7t: Sau khi c\u00e0i \u0111\u1eb7t xong, h\u00e3y nh\u1ea5n F5 \u0111\u1ec3 l\u00e0m m\u1edbi tr\u00ecnh duy\u1ec7t v\u00e0 ki\u1ec3m tra xem t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n \u0111\u00e3 chuy\u1ec3n sang HTTPS hay ch\u01b0a. N\u1ebfu t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n hi\u1ec3n th\u1ecb HTTPS, th\u00ec b\u1ea1n \u0111\u00e3 c\u00e0i \u0111\u1eb7t th\u00e0nh c\u00f4ng!<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gia-han-chung-chi-SSL-Lets-Encrypt-tu-dong\"><\/span>Gia h\u1ea1n ch\u1ee9ng ch\u1ec9 SSL Let&#8217;s Encrypt t\u1ef1 \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o website c\u1ee7a b\u1ea1n lu\u00f4n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 an to\u00e0n, vi\u1ec7c gia h\u1ea1n ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch thi\u1ebft l\u1eadp Cronjob t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n \u0111\u1ec3 qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra thu\u1eadn l\u1ee3i v\u00e0 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n:<\/p>\n<p><strong>B\u01b0\u1edbc 1: Truy c\u1eadp v\u00e0o Control Panel v\u1edbi quy\u1ec1n qu\u1ea3n tr\u1ecb vi\u00ean<\/strong><\/p>\n<p>\u0110\u1ea7u ti\u00ean, \u0111\u0103ng nh\u1eadp v\u00e0o website b\u1eb1ng t\u00e0i kho\u1ea3n qu\u1ea3n tr\u1ecb vi\u00ean c\u1ee7a b\u1ea1n.<br \/>\nSau khi \u0111\u0103ng nh\u1eadp th\u00e0nh c\u00f4ng, truy c\u1eadp v\u00e0o Control Panel c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p><strong>B\u01b0\u1edbc 2: Thi\u1ebft l\u1eadp Cronjob n\u00e2ng cao<\/strong><\/p>\n<p>Trong giao di\u1ec7n Control Panel, t\u00ecm v\u00e0 ch\u1ecdn Cron Job n\u00e2ng cao. \u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 cho ph\u00e9p b\u1ea1n t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 \u0111\u1ecbnh k\u1ef3.<\/p>\n<p><strong>B\u01b0\u1edbc 3: Nh\u1eadp l\u1ec7nh Cronjob<\/strong><\/p>\n<p>Trong ph\u1ea7n thi\u1ebft l\u1eadp Cronjob, b\u1ea1n c\u1ea7n nh\u1eadp l\u1ec7nh sau v\u00e0o \u00f4 Command:<\/p>\n<pre><strong><a href=\"https:\/\/interdata.vn\/blog\/php-la-gi\/\">php<\/a> acme-client\/bin\/acme issue \u2013domains.m<\/strong><\/pre>\n<p>(Thay th\u1ebf yourdomain.com b\u1eb1ng t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n.)<\/p>\n<p><strong>B\u01b0\u1edbc 4: C\u1ea5u h\u00ecnh th\u1eddi gian ch\u1ea1y Cronjob<\/strong><\/p>\n<p>\u0110\u1eb7t l\u1ecbch \u0111\u1ec3 Cronjob t\u1ef1 \u0111\u1ed9ng ch\u1ea1y theo kho\u1ea3ng th\u1eddi gian ph\u00f9 h\u1ee3p, v\u00ed d\u1ee5 m\u1ed7i ng\u00e0y ho\u1eb7c m\u1ed7i tu\u1ea7n, \u0111\u1ec3 ki\u1ec3m tra v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 khi c\u1ea7n.<\/p>\n<p>Thi\u1ebft l\u1eadp Cronjob \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n ch\u1ee9ng ch\u1ec9 l\u00e0 gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m th\u1eddi gian. Ch\u1ec9 c\u1ea7n v\u00e0i b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n nh\u01b0 tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o website c\u1ee7a m\u00ecnh lu\u00f4n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n v\u1edbi ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt\"><\/span>L\u01b0u \u00fd khi s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL t\u1eeb Let&#8217;s Encrypt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt SSL l\u00e0 gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt mi\u1ec5n ph\u00ed v\u00e0 ti\u1ec7n l\u1ee3i cho nhi\u1ec1u website. Tuy nhi\u00ean, \u0111\u1ec3 s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3, b\u1ea1n c\u1ea7n ch\u00fa \u00fd m\u1ed9t s\u1ed1 \u0111i\u1ec3m sau:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Thoi-han-cua-chung-chi-Lets-Encrypt\"><\/span>1. Th\u1eddi h\u1ea1n c\u1ee7a ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt ch\u1ec9 c\u00f3 hi\u1ec7u l\u1ef1c trong 90 ng\u00e0y. Sau th\u1eddi gian n\u00e0y, b\u1eaft bu\u1ed9c ph\u1ea3i gia h\u1ea1n l\u1ea1i m\u00e0 kh\u00f4ng c\u00f3 ngo\u1ea1i l\u1ec7.<\/p>\n<p>\u0110\u1ec3 tr\u00e1nh vi\u1ec7c qu\u00ean gia h\u1ea1n, n\u00ean thi\u1ebft l\u1eadp t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u00e1 tr\u00ecnh n\u00e0y th\u00f4ng qua Cronjob ho\u1eb7c c\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng kh\u00e1c. \u0110i\u1ec1u n\u00e0y gi\u00fap website c\u1ee7a b\u1ea1n lu\u00f4n duy tr\u00ec tr\u1ea1ng th\u00e1i an to\u00e0n.<\/p>\n<p>Nhi\u1ec1u chuy\u00ean gia khuy\u1ebfn ngh\u1ecb n\u00ean \u0111\u1ed5i ho\u1eb7c gia h\u1ea1n ch\u1ee9ng ch\u1ec9 sau 60 ng\u00e0y s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng g\u1eb7p s\u1ef1 c\u1ed1 b\u1ea5t ng\u1edd v\u00e0o cu\u1ed1i chu k\u1ef3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-Kha-nang-gap-loi-va-giai-phap-thay-the\"><\/span>2. Kh\u1ea3 n\u0103ng g\u1eb7p l\u1ed7i v\u00e0 gi\u1ea3i ph\u00e1p thay th\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1eb7c d\u00f9 Let\u2019s Encrypt l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn, nh\u01b0ng trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, ch\u1ee9ng ch\u1ec9 c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng n\u1ebfu website b\u1ecb gi\u00e1n \u0111o\u1ea1n do l\u1ed7i ch\u1ee9ng ch\u1ec9 SSL.<\/p>\n<p>C\u00e2n nh\u1eafc s\u1eed d\u1ee5ng c\u00e1c ch\u1ee9ng ch\u1ec9 SSL cao c\u1ea5p t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p uy t\u00edn v\u1edbi th\u1eddi h\u1ea1n d\u00e0i h\u01a1n, gi\u00fap t\u1ed1i \u01b0u h\u00f3a t\u00ednh b\u1ea3o m\u1eadt v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro gi\u00e1n \u0111o\u1ea1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Su-dung-chung-chi-cho-nhieu-ten-mien-va-may-chu\"><\/span>3. S\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 cho nhi\u1ec1u t\u00ean mi\u1ec1n v\u00e0 m\u00e1y ch\u1ee7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt cho nhi\u1ec1u t\u00ean mi\u1ec1n kh\u00e1c nhau v\u00e0 c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/dedicated-server-la-gi\/\">m\u00e1y ch\u1ee7 ri\u00eang<\/a> bi\u1ec7t. \u0110i\u1ec1u n\u00e0y gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian qu\u1ea3n l\u00fd v\u00e0 t\u1ed1i \u01b0u h\u00f3a t\u00e0i nguy\u00ean n\u1ebfu b\u1ea1n v\u1eadn h\u00e0nh nhi\u1ec1u h\u1ec7 th\u1ed1ng c\u00f9ng l\u00fac.<\/p>\n<figure id=\"attachment_20371\" aria-describedby=\"caption-attachment-20371\" style=\"width: 825px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20371\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Nhung-dieu-can-luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt-.webp\" alt=\"Nh\u1eefng \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd khi s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL t\u1eeb Let&#039;s Encrypt\u00a0l\u00e0 g\u00ec?\" width=\"825\" height=\"400\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Nhung-dieu-can-luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt-.webp 825w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Nhung-dieu-can-luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt--300x145.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Nhung-dieu-can-luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt--768x372.webp 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Nhung-dieu-can-luu-y-khi-su-dung-chung-chi-SSL-tu-Lets-Encrypt--750x364.webp 750w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\" \/><figcaption id=\"caption-attachment-20371\" class=\"wp-caption-text\">Nh\u1eefng \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd khi s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL t\u1eeb Let&#8217;s Encrypt\u00a0l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"4-Tuong-thich-thiet-bi-va-he-dieu-hanh\"><\/span>4. T\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 \u0111i\u1ec1u h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u0169, ch\u1eb3ng h\u1ea1n:<\/p>\n<ul>\n<li><strong>Blackberry<\/strong>: Phi\u00ean b\u1ea3n th\u1ea5p h\u01a1n v10.3.3<\/li>\n<li><strong>Android<\/strong>: Phi\u00ean b\u1ea3n th\u1ea5p h\u01a1n v2.3.6<\/li>\n<li><strong>Windows XP<\/strong>: C\u00e1c phi\u00ean b\u1ea3n tr\u01b0\u1edbc Service Pack 3<\/li>\n<\/ul>\n<p>N\u1ebfu ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb c\u0169 n\u00e0y, website c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i k\u1ebft n\u1ed1i SSL. V\u00ec v\u1eady, h\u00e3y xem x\u00e9t nh\u00f3m \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1ch h\u00e0ng tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 Let\u2019s Encrypt.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5-Khong-co-chinh-sach-den-bu-thiet-hai\"><\/span>5. Kh\u00f4ng c\u00f3 ch\u00ednh s\u00e1ch \u0111\u1ec1n b\u00f9 thi\u1ec7t h\u1ea1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Let\u2019s Encrypt l\u00e0 ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed, do \u0111\u00f3 kh\u00f4ng c\u00f3 cam k\u1ebft \u0111\u1ec1n b\u00f9 n\u1ebfu x\u1ea3y ra s\u1ef1 c\u1ed1 b\u1ea3o m\u1eadt hay gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5.<\/p>\n<p>\u0110\u1ec3 tr\u00e1nh r\u1ee7i ro, b\u1ea1n n\u00ean \u0111\u00e1nh gi\u00e1 k\u1ef9 l\u01b0\u1ee1ng nhu c\u1ea7u b\u1ea3o m\u1eadt c\u1ee7a m\u00ecnh tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh s\u1eed d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c website th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ho\u1eb7c nh\u1eefng trang c\u1ea7n b\u1ea3o m\u1eadt cao.<\/p>\n<p>Let\u2019s Encrypt y\u00eau c\u1ea7u CRL (Danh s\u00e1ch thu h\u1ed3i ch\u1ee9ng ch\u1ec9) \u0111\u1ec3 qu\u1ea3n l\u00fd t\u00ecnh tr\u1ea1ng ch\u1ee9ng ch\u1ec9. N\u1ebfu kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u n\u00e0y, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i trong qu\u00e1 tr\u00ecnh thi\u1ebft l\u1eadp ho\u1eb7c ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a SSL.<\/p>\n<p>V\u1edbi h\u01a1n 260 tri\u1ec7u website tr\u00ean to\u00e0n th\u1ebf gi\u1edbi \u0111ang s\u1eed d\u1ee5ng Let\u2019s Encrypt SSL, \u0111\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn an to\u00e0n \u0111\u1ec3 b\u1eaft \u0111\u1ea7u. B\u1ea1n c\u00f3 th\u1ec3 tr\u1ea3i nghi\u1ec7m Let\u2019s Encrypt trong 60 \u0111\u1ebfn 90 ng\u00e0y tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh n\u00e2ng c\u1ea5p l\u00ean ch\u1ee9ng ch\u1ec9 SSL c\u00f3 ph\u00ed v\u1edbi nhi\u1ec1u t\u00ednh n\u0103ng v\u00e0 h\u1ed7 tr\u1ee3 b\u1ea3o m\u1eadt t\u1ed1t h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-FAQs\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Lets-Encrypt-co-an-toan-cho-website-ban-hang-khong\"><\/span>Let&#8217;s Encrypt c\u00f3 an to\u00e0n cho website b\u00e1n h\u00e0ng kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3. V\u1ec1 m\u1eb7t m\u00e3 h\u00f3a d\u1eef li\u1ec7u \u0111\u01b0\u1eddng truy\u1ec1n, Let&#8217;s Encrypt an to\u00e0n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed. Tuy nhi\u00ean, v\u1edbi c\u00e1c website b\u00e1n h\u00e0ng quy m\u00f4 l\u1edbn, b\u1ea1n n\u00ean c\u00e2n nh\u1eafc SSL tr\u1ea3 ph\u00ed \u0111\u1ec3 c\u00f3 th\u00eam b\u1ea3o hi\u1ec3m v\u00e0 x\u00e1c th\u1ef1c th\u01b0\u01a1ng hi\u1ec7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tai-sao-chung-chi-chi-co-thoi-han-90-ngay\"><\/span>T\u1ea1i sao ch\u1ee9ng ch\u1ec9 ch\u1ec9 c\u00f3 th\u1eddi h\u1ea1n 90 ng\u00e0y?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Th\u1eddi h\u1ea1n ng\u1eafn gi\u00fap gi\u1ea3m thi\u1ec3u h\u1eadu qu\u1ea3 n\u1ebfu kh\u00f3a b\u00ed m\u1eadt b\u1ecb \u0111\u00e1nh c\u1eafp v\u00e0 khuy\u1ebfn kh\u00edch qu\u1ea3n tr\u1ecb vi\u00ean thi\u1ebft l\u1eadp quy tr\u00ecnh gia h\u1ea1n t\u1ef1 \u0111\u1ed9ng, gi\u00fap h\u1ec7 th\u1ed1ng lu\u00f4n c\u1eadp nh\u1eadt c\u00e1c ti\u00eau chu\u1ea9n b\u1ea3o m\u1eadt m\u1edbi nh\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lam-sao-de-gia-han-Lets-Encrypt-tu-dong\"><\/span>L\u00e0m sao \u0111\u1ec3 gia h\u1ea1n Let&#8217;s Encrypt t\u1ef1 \u0111\u1ed9ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u1ea7u h\u1ebft c\u00e1c c\u00f4ng c\u1ee5 c\u00e0i \u0111\u1eb7t nh\u01b0 Certbot \u0111\u1ec1u t\u1ef1 \u0111\u1ed9ng t\u1ea1o m\u1ed9t Cronjob (tr\u00ean Linux) ho\u1eb7c Task Scheduler (tr\u00ean Windows) \u0111\u1ec3 ki\u1ec3m tra v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 khi c\u00f2n d\u01b0\u1edbi 30 ng\u00e0y. Tr\u00ean Hosting cPanel\/DirectAdmin, vi\u1ec7c n\u00e0y \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 c\u1ea5u h\u00ecnh s\u1eb5n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lets-Encrypt-co-ho-tro-Wildcard-SSL-khong\"><\/span>Let&#8217;s Encrypt c\u00f3 h\u1ed7 tr\u1ee3 Wildcard SSL kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3. T\u1eeb n\u0103m 2018, Let&#8217;s Encrypt \u0111\u00e3 h\u1ed7 tr\u1ee3 c\u1ea5p ph\u00e1t ch\u1ee9ng ch\u1ec9 Wildcard (d\u1ea1ng *.domain.com), cho ph\u00e9p b\u1ea3o m\u1eadt kh\u00f4ng gi\u1edbi h\u1ea1n c\u00e1c t\u00ean mi\u1ec1n con (<a href=\"https:\/\/interdata.vn\/blog\/subdomain-la-gi\/\">subdomain<\/a>) ch\u1ec9 v\u1edbi m\u1ed9t ch\u1ee9ng ch\u1ec9 duy nh\u1ea5t. Tuy nhi\u00ean, vi\u1ec7c x\u00e1c th\u1ef1c Wildcard y\u00eau c\u1ea7u ph\u1ea3i x\u00e1c th\u1ef1c qua DNS (DNS Challenge).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dung-Lets-Encrypt-co-giup-SEO-tot-hon-khong\"><\/span>D\u00f9ng Let&#8217;s Encrypt c\u00f3 gi\u00fap SEO t\u1ed1t h\u01a1n kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3. Google coi HTTPS l\u00e0 m\u1ed9t t\u00edn hi\u1ec7u x\u1ebfp h\u1ea1ng t\u00edch c\u1ef1c. Vi\u1ec7c s\u1eed d\u1ee5ng Let&#8217;s Encrypt gi\u00fap b\u1ea1n k\u00edch ho\u1ea1t HTTPS, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb tr\u00ean c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm v\u00e0 tr\u00e1nh c\u1ea3nh b\u00e1o b\u1ea3o m\u1eadt l\u00e0m ng\u01b0\u1eddi d\u00f9ng tho\u00e1t trang.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ket-luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Let&#8217;s Encrypt th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng trong l\u0129nh v\u1ef1c b\u1ea3o m\u1eadt web, mang l\u1ea1i c\u01a1 h\u1ed9i ti\u1ebfp c\u1eadn c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a an to\u00e0n cho m\u1ecdi ng\u01b0\u1eddi d\u00f9ng v\u1edbi chi ph\u00ed b\u1eb1ng 0. V\u1edbi \u0111a s\u1ed1 c\u00e1c nhu c\u1ea7u s\u1eed d\u1ee5ng th\u00f4ng th\u01b0\u1eddng t\u1eeb blog, tin t\u1ee9c \u0111\u1ebfn website doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf, \u0111\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u, c\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<p>Tuy nhi\u00ean, vi\u1ec7c tri\u1ec3n khai SSL ch\u1ec9 l\u00e0 b\u01b0\u1edbc kh\u1edfi \u0111\u1ea7u. \u0110\u1ec3 website ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n, b\u1ea1n c\u1ea7n m\u1ed9t h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 m\u1ea1nh m\u1ebd v\u00e0 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt b\u00e0i b\u1ea3n. Hy v\u1ecdng b\u00e0i vi\u1ebft \u0111\u00e3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 <strong>Let&#8217;s Encrypt l\u00e0 g\u00ec<\/strong> v\u00e0 c\u00f3 quy\u1ebft \u0111\u1ecbnh ph\u00f9 h\u1ee3p cho m\u00ecnh. N\u1ebfu b\u1ea1n c\u1ea7n h\u1ed7 tr\u1ee3 c\u00e0i \u0111\u1eb7t SSL ho\u1eb7c t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p VPS\/Hosting ch\u1ea5t l\u01b0\u1ee3ng, h\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi <a href=\"https:\/\/interdata.vn\/\"><strong>InterData<\/strong><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Let\u2019s Encrypt l\u00e0 g\u00ec? \u0110\u00e2y l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 cung c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL\/TLS mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n c\u1ea7u. V\u1edbi c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng, Let\u2019s Encrypt tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean c\u1ee7a nhi\u1ec1u qu\u1ea3n tr\u1ecb vi\u00ean web v\u00e0 doanh nghi\u1ec7p. Trong<\/p>\n","protected":false},"author":11,"featured_media":38272,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-20358","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\/20358","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=20358"}],"version-history":[{"count":8,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/20358\/revisions"}],"predecessor-version":[{"id":38266,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/20358\/revisions\/38266"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/38272"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=20358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=20358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=20358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}