{"id":20001,"date":"2025-09-21T11:57:20","date_gmt":"2025-09-21T04:57:20","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=20001"},"modified":"2026-02-25T13:37:35","modified_gmt":"2026-02-25T06:37:35","slug":"bao-mat-vps-linux","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/","title":{"rendered":"15+ C\u00e1ch b\u1ea3o m\u1eadt VPS Linux \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3, ai c\u0169ng l\u00e0m \u0111\u01b0\u1ee3c"},"content":{"rendered":"<p>B\u1ea1n \u0111ang v\u1eadn h\u00e0nh website, \u1ee9ng d\u1ee5ng, ho\u1eb7c m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n tr\u00ean VPS Linux th\u00ec vi\u1ec7c <a href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/\"><strong>b\u1ea3o m\u1eadt VPS Linux<\/strong><\/a> kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t t\u00f9y ch\u1ecdn m\u00e0 l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 s\u1ed1ng c\u00f2n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. B\u00e0i vi\u1ebft sau s\u1ebd h\u01b0\u1edbng d\u1eabn 7 c\u00e1ch b\u1ea3o m\u1eadt VPS Linux \u0111\u01a1n gi\u1ea3n, hi\u1ec3u qu\u1ea3 cho ng\u01b0\u1eddi m\u1edbi v\u00e0 c\u00f9ng nhau ph\u00e2n t\u00edch c\u00e1c m\u1ed1i \u0111e d\u1ecda th\u01b0\u1eddng g\u1eb7p, nguy\u00ean t\u1eafc v\u00e0ng ph\u1ea3i tu\u00e2n th\u1ee7, v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t t\u01b0\u1eddng th\u00e0nh b\u1ea3o v\u1ec7 v\u1eefng ch\u1eafc cho m\u00e1y ch\u1ee7 Linux c\u1ee7a b\u1ea1n.<\/p>\n<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\/bao-mat-vps-linux\/#Tai-sao-nen-bao-mat-VPS-Linux\" >T\u1ea1i sao n\u00ean b\u1ea3o m\u1eadt VPS Linux?<\/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\/bao-mat-vps-linux\/#Cac-moi-de-doa-bao-mat-VPS-Linux-thuong-gap\" >C\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt VPS Linux th\u01b0\u1eddng g\u1eb7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Tan-cong-brute-force-SSH\" >T\u1ea5n c\u00f4ng brute force SSH<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Malware-backdoor-trong-VPS\" >Malware &amp; backdoor trong VPS<\/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\/bao-mat-vps-linux\/#Lo-hong-phan-mem-he-dieu-hanh-Linux\" >L\u1ed7 h\u1ed5ng ph\u1ea7n m\u1ec1m &amp; h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux<\/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\/bao-mat-vps-linux\/#DDOS-va-botnet-tan-cong-dich-vu\" >DDOS v\u00e0 botnet t\u1ea5n c\u00f4ng d\u1ecbch v\u1ee5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Nguyen-tac-vang-trong-bao-mat-VPS-Linux\" >Nguy\u00ean t\u1eafc v\u00e0ng trong b\u1ea3o m\u1eadt VPS Linux<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Cap-nhat-he-thong-goi-phan-mem-thuong-xuyen\" >C\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng &amp; g\u00f3i ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Nguyen-tac-phan-quyen-va-quan-ly-user\" >Nguy\u00ean t\u1eafc ph\u00e2n quy\u1ec1n v\u00e0 qu\u1ea3n l\u00fd user<\/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\/bao-mat-vps-linux\/#Mat-khau-manh-xac-thuc-2-lop-2FA\" >M\u1eadt kh\u1ea9u m\u1ea1nh &amp; x\u00e1c th\u1ef1c 2 l\u1edbp (2FA)<\/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\/bao-mat-vps-linux\/#Sao-luu-dinh-ky-va-kiem-tra-log\" >Sao l\u01b0u \u0111\u1ecbnh k\u1ef3 v\u00e0 ki\u1ec3m tra log<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Checklist-7-cach-bao-mat-VPS-Linux-co-ban\" >Checklist 7 c\u00e1ch b\u1ea3o m\u1eadt VPS Linux c\u01a1 b\u1ea3n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#1-Password\" >1. Password<\/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\/bao-mat-vps-linux\/#2-Cac-User-mac-dinh\" >2. C\u00e1c User m\u1eb7c \u0111\u1ecbnh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#3-Services\" >3. Services<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#4-SSH-Telnet\" >4. SSH, Telnet<\/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\/bao-mat-vps-linux\/#5-Port\" >5. Port<\/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\/bao-mat-vps-linux\/#6-Cau-hinh-tuong-lua-iptables-firewalld-UFW\" >6. C\u1ea5u h\u00ecnh t\u01b0\u1eddng l\u1eeda (iptables, firewalld, UFW)<\/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\/bao-mat-vps-linux\/#7-Cai-dat-Fail2Ban-chong-brute-force\" >7. C\u00e0i \u0111\u1eb7t Fail2Ban ch\u1ed1ng brute force<\/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\/bao-mat-vps-linux\/#8-Tao-user-quyen-han-che-de-bao-mat-VPS-Linux\" >8. T\u1ea1o user quy\u1ec1n h\u1ea1n ch\u1ebf \u0111\u1ec3 b\u1ea3o m\u1eadt VPS Linux<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#9-Cap-nhat-he-dieu-hanh-va-phan-mem-VPS-thuong-xuyen\" >9. C\u1eadp nh\u1eadt h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 ph\u1ea7n m\u1ec1m VPS th\u01b0\u1eddng xuy\u00ean<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#10-Bat-xac-thuc-da-yeu-to-MFA-cho-VPS\" >10. B\u1eadt x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) cho VPS<\/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\/bao-mat-vps-linux\/#11-Vo-hieu-hoa-dich-vu-khong-dung\" >11. V\u00f4 hi\u1ec7u h\u00f3a d\u1ecbch v\u1ee5 kh\u00f4ng d\u00f9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#12-Chon-nha-cung-cap-VPS-co-nen-tang-bao-mat-tot\" >12. Ch\u1ecdn nh\u00e0 cung c\u1ea5p VPS c\u00f3 n\u1ec1n t\u1ea3ng b\u1ea3o m\u1eadt t\u1ed1t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Cac-bien-phap-tang-cuong-bao-mat-VPS-nang-cao\" >C\u00e1c bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt VPS n\u00e2ng cao<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Gioi-han-tai-nguyen-va-cach-ly-ung-dung\" >Gi\u1edbi h\u1ea1n t\u00e0i nguy\u00ean v\u00e0 c\u00e1ch ly \u1ee9ng d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Kiem-soat-quyen-truy-cap-va-file-File-Permissions\" >Ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp v\u00e0 file (File Permissions)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Su-dung-SELinux-hoac-AppArmor\" >S\u1eed d\u1ee5ng SELinux ho\u1eb7c AppArmor<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Cong-cu-ho-tro-bao-mat-VPS-Linux\" >C\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 b\u1ea3o m\u1eadt VPS Linux<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#ClamAV-%E2%80%93-quet-virus-malware\" >ClamAV \u2013 qu\u00e9t virus &amp; malware<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#RKhunter-%E2%80%93-phat-hien-rootkit\" >RKhunter \u2013 ph\u00e1t hi\u1ec7n rootkit<\/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\/bao-mat-vps-linux\/#CSF-ConfigServer-Security-Firewall\" >CSF (ConfigServer Security &amp; Firewall)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Lynis-%E2%80%93-cong-cu-audit-bao-mat-Linux\" >Lynis \u2013 c\u00f4ng c\u1ee5 audit b\u1ea3o m\u1eadt Linux<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Best-Practices-bao-mat-VPS-Linux-cho-doanh-nghiep\" >Best Practices b\u1ea3o m\u1eadt VPS Linux cho doanh nghi\u1ec7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/interdata.vn\/blog\/bao-mat-vps-linux\/#Thiet-lap-monitoring-va-canh-bao-an-ninh\" >Thi\u1ebft l\u1eadp monitoring v\u00e0 c\u1ea3nh b\u00e1o an ninh<\/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\/bao-mat-vps-linux\/#Ap-dung-Zero-Trust-Security\" >\u00c1p d\u1ee5ng Zero Trust Security<\/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\/bao-mat-vps-linux\/#Kiem-tra-bao-mat-dinh-ky-Pentest-Audit\" >Ki\u1ec3m tra b\u1ea3o m\u1eadt \u0111\u1ecbnh k\u1ef3 (Pentest, Audit)<\/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\/bao-mat-vps-linux\/#Xay-dung-quy-trinh-quan-tri-bao-mat-noi-bo\" >X\u00e2y d\u1ef1ng quy tr\u00ecnh qu\u1ea3n tr\u1ecb b\u1ea3o m\u1eadt n\u1ed9i b\u1ed9<\/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\/bao-mat-vps-linux\/#FAQ-%E2%80%93-Cau-hoi-thuong-gap-ve-Bao-mat-VPS\" >FAQ &#8211; C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 B\u1ea3o m\u1eadt VPS<\/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\/bao-mat-vps-linux\/#Bao-mat-VPS-co-lam-cham-hieu-suat-khong\" >B\u1ea3o m\u1eadt VPS c\u00f3 l\u00e0m ch\u1eadm hi\u1ec7u su\u1ea5t 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\/bao-mat-vps-linux\/#Toi-nen-dung-UFW-hay-IPTables\" >T\u00f4i n\u00ean d\u00f9ng UFW hay IPTables?<\/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\/bao-mat-vps-linux\/#Co-nen-cai-dat-giao-dien-do-hoa-GUI-tren-VPS-khong\" >C\u00f3 n\u00ean c\u00e0i \u0111\u1eb7t giao di\u1ec7n \u0111\u1ed3 h\u1ecda (GUI) tr\u00ean VPS kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-nen-bao-mat-VPS-Linux\"><\/span>T\u1ea1i sao n\u00ean b\u1ea3o m\u1eadt VPS Linux?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>VPS l\u00e0 tr\u00e1i tim c\u1ee7a h\u1ec7 th\u1ed1ng s\u1ed1. Vi\u1ec7c l\u01a1 l\u00e0 <strong>b\u1ea3o m\u1eadt VPS Linux<\/strong> s\u1ebd \u0111\u1eb7t b\u1ea1n v\u00e0o nhi\u1ec1u r\u1ee7i ro nghi\u00eam tr\u1ecdng:<\/p>\n<ul>\n<li><strong>M\u1ea5t d\u1eef li\u1ec7u v\u00e0 gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 x\u00f3a, \u0111\u00e1nh c\u1eafp, ho\u1eb7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u, khi\u1ebfn website\/\u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, g\u00e2y thi\u1ec7t h\u1ea1i doanh thu tr\u1ef1c ti\u1ebfp.<\/li>\n<li><strong>L\u1ee3i d\u1ee5ng VPS cho m\u1ee5c \u0111\u00edch x\u1ea5u:<\/strong> VPS b\u1ecb chi\u1ebfm quy\u1ec1n th\u01b0\u1eddng b\u1ecb bi\u1ebfn th\u00e0nh m\u1ed9t ph\u1ea7n c\u1ee7a <strong>botnet<\/strong>, d\u00f9ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c <strong>T\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 (DDoS)<\/strong> ho\u1eb7c g\u1eedi <strong>spam email<\/strong>, khi\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a b\u1ea1n b\u1ecb li\u1ec7t v\u00e0o danh s\u00e1ch \u0111en.<\/li>\n<li><strong>Thi\u1ec7t h\u1ea1i uy t\u00edn v\u00e0 E-E-A-T:<\/strong> M\u1ed9t m\u00e1y ch\u1ee7 b\u1ecb t\u1ea5n c\u00f4ng s\u1ebd g\u00e2y m\u1ea5t l\u00f2ng tin nghi\u00eam tr\u1ecdng t\u1eeb kh\u00e1ch h\u00e0ng v\u00e0 l\u00e0m gi\u1ea3m uy t\u00edn c\u1ee7a b\u1ea1n v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm.<\/li>\n<\/ul>\n<p>Vi\u1ec7c \u0111\u1ea7u t\u01b0 th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c v\u00e0o <strong>t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt VPS<\/strong> ch\u00ednh l\u00e0 \u0111\u1ea7u t\u01b0 v\u00e0o s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ec1n v\u1eefng l\u00e2u d\u00e0i c\u1ee7a doanh nghi\u1ec7p.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-moi-de-doa-bao-mat-VPS-Linux-thuong-gap\"><\/span>C\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt VPS Linux th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u r\u00f5 k\u1ebb th\u00f9 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 chi\u1ebfn th\u1eafng. Khi qu\u1ea3n l\u00fd <strong>VPS Linux<\/strong>, b\u1ea1n c\u1ea7n nh\u1eadn di\u1ec7n b\u1ed1n m\u1ed1i \u0111e d\u1ecda ph\u1ed5 bi\u1ebfn sau:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan-cong-brute-force-SSH\"><\/span>T\u1ea5n c\u00f4ng brute force SSH<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>T\u1ea5n c\u00f4ng brute force SSH<\/strong> l\u00e0 m\u1ed1i \u0111e d\u1ecda ph\u1ed5 bi\u1ebfn nh\u1ea5t, n\u01a1i c\u00e1c script t\u1ef1 \u0111\u1ed9ng c\u1ed1 g\u1eafng d\u00f2 m\u1eadt kh\u1ea9u c\u1ee7a b\u1ea1n b\u1eb1ng h\u00e0ng ng\u00e0n l\u1ea7n th\u1eed k\u1ebft h\u1ee3p. N\u1ebfu b\u1ea1n kh\u00f4ng thay \u0111\u1ed5i c\u1ed5ng m\u1eb7c \u0111\u1ecbnh (<strong>Port 22<\/strong>) ho\u1eb7c s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh, VPS c\u1ee7a b\u1ea1n s\u1ebd d\u1ec5 d\u00e0ng b\u1ecb chi\u1ebfm quy\u1ec1n sau v\u00e0i gi\u1edd ho\u1eb7c v\u00e0i ng\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Malware-backdoor-trong-VPS\"><\/span>Malware &amp; backdoor trong VPS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Malware<\/strong> (ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e0i c\u1eafm th\u00f4ng qua c\u00e1c l\u1ed7 h\u1ed5ng ph\u1ea7n m\u1ec1m ho\u1eb7c c\u00e1c file t\u1ea3i l\u00ean kh\u00f4ng an to\u00e0n. Khi \u0111\u00e3 chi\u1ebfm \u0111\u01b0\u1ee3c ch\u1ed7 \u0111\u1ee9ng, <strong>backdoor<\/strong> (c\u1eeda h\u1eadu) cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng duy tr\u00ec quy\u1ec1n truy c\u1eadp b\u00ed m\u1eadt, d\u00f9 b\u1ea1n \u0111\u00e3 \u0111\u1ed5i m\u1eadt kh\u1ea9u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lo-hong-phan-mem-he-dieu-hanh-Linux\"><\/span>L\u1ed7 h\u1ed5ng ph\u1ea7n m\u1ec1m &amp; h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u1ec7 \u0111i\u1ec1u h\u00e0nh <strong>Linux<\/strong> v\u00e0 c\u00e1c g\u00f3i ph\u1ea7n m\u1ec1m \u0111i k\u00e8m (<strong>Nginx, Apache, PHP, MySQL<\/strong>) lu\u00f4n c\u00f3 nh\u1eefng l\u1ed7 h\u1ed5ng m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. N\u1ebfu b\u1ea1n kh\u00f4ng <strong>c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng th\u01b0\u1eddng xuy\u00ean<\/strong>, k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"DDOS-va-botnet-tan-cong-dich-vu\"><\/span>DDOS v\u00e0 botnet t\u1ea5n c\u00f4ng d\u1ecbch v\u1ee5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c cu\u1ed9c <strong>t\u1ea5n c\u00f4ng DDoS<\/strong> (Distributed Denial of Service) s\u1eed d\u1ee5ng m\u1ed9t m\u1ea1ng l\u01b0\u1edbi m\u00e1y t\u00ednh b\u1ecb l\u00e2y nhi\u1ec5m (<strong>botnet<\/strong>) \u0111\u1ec3 g\u1eedi h\u00e0ng tri\u1ec7u y\u00eau c\u1ea7u truy c\u1eadp c\u00f9ng l\u00fac, l\u00e0m ti\u00eau hao t\u00e0i nguy\u00ean CPU v\u00e0 b\u0103ng th\u00f4ng, khi\u1ebfn d\u1ecbch v\u1ee5 c\u1ee7a b\u1ea1n b\u1ecb ng\u01b0ng tr\u1ec7.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen-tac-vang-trong-bao-mat-VPS-Linux\"><\/span>Nguy\u00ean t\u1eafc v\u00e0ng trong b\u1ea3o m\u1eadt VPS Linux<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ed1n <strong>nguy\u00ean t\u1eafc b\u1ea3o m\u1eadt VPS<\/strong> c\u1ed1t l\u00f5i m\u00e0 m\u1ecdi qu\u1ea3n tr\u1ecb vi\u00ean ph\u1ea3i tu\u00e2n th\u1ee7 \u0111\u1ec3 x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho m\u00e1y ch\u1ee7 c\u1ee7a m\u00ecnh:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cap-nhat-he-thong-goi-phan-mem-thuong-xuyen\"><\/span>C\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng &amp; g\u00f3i ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 h\u00e0nh \u0111\u1ed9ng ph\u00f2ng th\u1ee7 \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3 nh\u1ea5t. C\u00e1c b\u1ea3n <strong>c\u1eadp nh\u1eadt b\u1ea3o m\u1eadt Linux<\/strong> th\u01b0\u1eddng ch\u1ee9a c\u00e1c b\u1ea3n v\u00e1 cho c\u00e1c l\u1ed7 h\u1ed5ng v\u1eeba \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. B\u1ea1n n\u00ean \u0111\u1eb7t l\u1ecbch <strong>c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng<\/strong> (<strong><code>apt upgrade<\/code><\/strong> tr\u00ean Debian\/Ubuntu ho\u1eb7c <strong><code>yum update<\/code><\/strong> tr\u00ean CentOS) \u00edt nh\u1ea5t h\u00e0ng tu\u1ea7n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nguyen-tac-phan-quyen-va-quan-ly-user\"><\/span>Nguy\u00ean t\u1eafc ph\u00e2n quy\u1ec1n v\u00e0 qu\u1ea3n l\u00fd user<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng bao gi\u1edd s\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n <strong>Root<\/strong> \u0111\u1ec3 v\u1eadn h\u00e0nh c\u00e1c \u1ee9ng d\u1ee5ng web th\u00f4ng th\u01b0\u1eddng. H\u00e3y tu\u00e2n th\u1ee7 <strong>nguy\u00ean t\u1eafc ph\u00e2n quy\u1ec1n Linux<\/strong> b\u1eb1ng c\u00e1ch:<\/p>\n<ul>\n<li>T\u1ea1o ng\u01b0\u1eddi d\u00f9ng v\u1edbi <strong>quy\u1ec1n h\u1ea1n t\u1ed1i thi\u1ec3u<\/strong> c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ea1y \u1ee9ng d\u1ee5ng.<\/li>\n<li>H\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c th\u01b0 m\u1ee5c h\u1ec7 th\u1ed1ng quan tr\u1ecdng.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Mat-khau-manh-xac-thuc-2-lop-2FA\"><\/span>M\u1eadt kh\u1ea9u m\u1ea1nh &amp; x\u00e1c th\u1ef1c 2 l\u1edbp (2FA)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh, ph\u1ee9c t\u1ea1p (bao g\u1ed3m k\u00fd t\u1ef1 hoa, th\u01b0\u1eddng, s\u1ed1 v\u00e0 k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t) l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. H\u01a1n n\u1eefa, b\u1ea1n c\u1ea7n <strong>k\u00edch ho\u1ea1t x\u00e1c th\u1ef1c 2 l\u1edbp (2FA)<\/strong> cho c\u00e1c d\u1ecbch v\u1ee5 quan tr\u1ecdng nh\u01b0 <strong>SSH<\/strong> v\u00e0 c\u00e1c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n tr\u1ecb (Control Panel).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Sao-luu-dinh-ky-va-kiem-tra-log\"><\/span>Sao l\u01b0u \u0111\u1ecbnh k\u1ef3 v\u00e0 ki\u1ec3m tra log<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Sao l\u01b0u \u0111\u1ecbnh k\u1ef3 VPS<\/strong> l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 cu\u1ed1i c\u00f9ng. H\u00e3y thi\u1ebft l\u1eadp c\u01a1 ch\u1ebf <strong>snapshot<\/strong> ho\u1eb7c <strong>backup VPS Linux<\/strong> t\u1ef1 \u0111\u1ed9ng ra m\u1ed9t m\u00e1y ch\u1ee7 ngo\u1ea1i tuy\u1ebfn (offsite). \u0110\u1ed3ng th\u1eddi, th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra c\u00e1c file <strong>log h\u1ec7 th\u1ed1ng<\/strong> (v\u00ed d\u1ee5: <code>\/var\/log\/auth.log<\/code>) \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c h\u00e0nh vi \u0111\u0103ng nh\u1eadp ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ng\u1edd.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Checklist-7-cach-bao-mat-VPS-Linux-co-ban\"><\/span>Checklist 7 c\u00e1ch b\u1ea3o m\u1eadt VPS Linux c\u01a1 b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1-Password\"><\/span>1. Password<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>M\u1eadt kh\u1ea9u<\/strong> l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn m\u00e0 h\u1ea7u nh\u01b0 ai c\u0169ng t\u1eebng g\u1eb7p ph\u1ea3i trong vi\u1ec7c b\u1ea3o m\u1eadt VPS Linux. Nhi\u1ec1u ng\u01b0\u1eddi l\u1ea7m t\u01b0\u1edfng r\u1eb1ng s\u1eed d\u1ee5ng VPS hay Server t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t m\u00e1y t\u00ednh c\u00e1 nh\u00e2n v\u00e0 v\u00ec v\u1eady kh\u00f4ng c\u1ea7n lo l\u1eafng v\u1ec1 vi\u1ec7c b\u1ecb t\u1ea5n c\u00f4ng. \u0110\u00e2y l\u00e0 m\u1ed9t sai l\u1ea7m nghi\u00eam tr\u1ecdng v\u00e0 r\u1ea5t nguy hi\u1ec3m.<\/p>\n<p>V\u1edbi m\u00e1y t\u00ednh c\u00e1 nh\u00e2n, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1eb7t m\u1eadt kh\u1ea9u theo s\u1edf th\u00edch c\u00e1 nh\u00e2n, nh\u01b0ng tr\u00ean Internet, hacker kh\u00f4ng th\u1ec3 tr\u1ef1c ti\u1ebfp ti\u1ebfp c\u1eadn m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n, thay v\u00e0o \u0111\u00f3 h\u1ecd s\u1ebd s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e1n ti\u1ebfp nh\u01b0 d\u00f2 m\u1eadt kh\u1ea9u.<\/p>\n<figure id=\"attachment_20011\" aria-describedby=\"caption-attachment-20011\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20011\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Mat-khau-la-dieu-quan-trong-trong-viec-bao-mat-VPS-Linux.jpg\" alt=\"M\u1eadt kh\u1ea9u l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o m\u1eadt VPS Linux\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Mat-khau-la-dieu-quan-trong-trong-viec-bao-mat-VPS-Linux.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Mat-khau-la-dieu-quan-trong-trong-viec-bao-mat-VPS-Linux-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Mat-khau-la-dieu-quan-trong-trong-viec-bao-mat-VPS-Linux-768x480.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Mat-khau-la-dieu-quan-trong-trong-viec-bao-mat-VPS-Linux-750x469.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-20011\" class=\"wp-caption-text\">M\u1eadt kh\u1ea9u l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o m\u1eadt VPS Linux<\/figcaption><\/figure>\n<p>\u1ede th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, n\u1ebfu b\u1ea1n c\u00f2n d\u00f9ng c\u00e1c d\u1ea1ng m\u1eadt kh\u1ea9u \u0111\u01a1n gi\u1ea3n nh\u01b0: 123456, 123456789, ng\u00e0y th\u00e1ng n\u0103m sinh, ho\u1eb7c c\u00e1c k\u00fd t\u1ef1 r\u1ea5t d\u1ec5 d\u00e0ng \u0111o\u00e1n \u0111\u01b0\u1ee3c, b\u1ea1n c\u1ea7n thay \u0111\u1ed5i ngay l\u1eadp t\u1ee9c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh.<\/p>\n<p>\u0110\u1ec3 t\u1ea1o m\u1ed9t m\u1eadt kh\u1ea9u an to\u00e0n cho VPS Linux, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n theo c\u00e1c gi\u1ea3i ph\u00e1p sau:<\/p>\n<p><strong>S\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u ph\u1ee9c t\u1ea1p<\/strong>:<\/p>\n<ul>\n<li>M\u1eadt kh\u1ea9u n\u00ean bao g\u1ed3m ch\u1eef hoa, ch\u1eef th\u01b0\u1eddng, s\u1ed1 v\u00e0 k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t. \u0110\u1ed9 d\u00e0i t\u1ed1i thi\u1ec3u n\u00ean t\u1eeb 12 k\u00fd t\u1ef1 tr\u1edf l\u00ean l\u00e0 t\u1ed1t.<\/li>\n<li>V\u00ed d\u1ee5: Thay v\u00ec s\u1eed d\u1ee5ng m\u1ed9t m\u1eadt kh\u1ea9u r\u1ea5t \u0111\u01a1n gi\u1ea3n nh\u01b0 &#8220;123456&#8221;, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng &#8220;<strong>P@ssw0rd!2024<\/strong>&#8220;.<\/li>\n<\/ul>\n<p><strong>Thay \u0111\u1ed5i m\u1eadt kh\u1ea9u \u0111\u1ecbnh k\u1ef3:<\/strong><\/p>\n<ul>\n<li>L\u00ean l\u1ecbch c\u00e1c khung th\u1eddi gian \u0111\u1ec3 thay \u0111\u1ed5i m\u1eadt kh\u1ea9u th\u01b0\u1eddng xuy\u00ean (v\u00ed d\u1ee5: m\u1ed7i 3-6 th\u00e1ng) \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ed1i \u0111a nh\u1eefng r\u1ee7i ro b\u1ecb x\u00e2m nh\u1eadp.<\/li>\n<\/ul>\n<p><strong>S\u1eed d\u1ee5ng SSH Key thay v\u00ec m\u1eadt kh\u1ea9u<\/strong>:<\/p>\n<ul>\n<li>K\u1ebft n\u1ed1i v\u00e0o VPS qua SSH key thay v\u00ec s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u. SSH key cung c\u1ea5p m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt cao v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c nguy c\u01a1 b\u1ecb t\u1ea5n c\u00f4ng b\u1eb1ng c\u00e1ch d\u00f2 t\u00ecm m\u1eadt kh\u1ea9u.<\/li>\n<li>H\u01b0\u1edbng d\u1eabn: T\u1ea1o c\u1eb7p kh\u00f3a SSH tr\u00ean m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n v\u00e0 th\u00eam kh\u00f3a c\u00f4ng khai v\u00e0o t\u1ec7p<strong> ~\/.ssh\/authorized_keys<\/strong> tr\u00ean VPS.<\/li>\n<\/ul>\n<figure id=\"attachment_20012\" aria-describedby=\"caption-attachment-20012\" style=\"width: 719px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20012\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Su-dung-SSH-Key-thay-vi-mat-khau.png\" alt=\"S\u1eed d\u1ee5ng SSH Key thay v\u00ec m\u1eadt kh\u1ea9u\" width=\"719\" height=\"345\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Su-dung-SSH-Key-thay-vi-mat-khau.png 719w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Su-dung-SSH-Key-thay-vi-mat-khau-300x144.png 300w\" sizes=\"auto, (max-width: 719px) 100vw, 719px\" \/><figcaption id=\"caption-attachment-20012\" class=\"wp-caption-text\">S\u1eed d\u1ee5ng SSH Key thay v\u00ec m\u1eadt kh\u1ea9u<\/figcaption><\/figure>\n<p><strong>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o m\u1eadt kh\u1ea9u uy t\u00edn<\/strong>:<\/p>\n<ul>\n<li>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o m\u1eadt kh\u1ea9u tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 t\u1ea1o ra m\u1eadt kh\u1ea9u ph\u1ee9c t\u1ea1p v\u00e0 kh\u00f3 \u0111o\u00e1n.<\/li>\n<li>V\u00ed d\u1ee5: S\u1eed d\u1ee5ng trang web nh\u01b0 <strong>passwordsgenerator.net<\/strong> \u0111\u1ec3 t\u1ea1o m\u1eadt kh\u1ea9u ng\u1eabu nhi\u00ean.<\/li>\n<\/ul>\n<p><strong>Ghi nh\u1edb v\u00e0 l\u01b0u tr\u1eef m\u1eadt kh\u1ea9u n\u01a1i an to\u00e0n<\/strong>:<\/p>\n<ul>\n<li>Ghi nh\u1edb m\u1eadt kh\u1ea9u ho\u1eb7c l\u01b0u tr\u1eef n\u00f3 trong m\u1ed9t \u1ee9ng d\u1ee5ng qu\u1ea3n l\u00fd m\u1eadt kh\u1ea9u an to\u00e0n \u0111\u1ec3 tr\u00e1nh vi\u1ec7c qu\u00ean m\u1eadt kh\u1ea9u.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2-Cac-User-mac-dinh\"><\/span>2. C\u00e1c User m\u1eb7c \u0111\u1ecbnh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u1edbi c\u00e1c user m\u1eb7t \u0111\u1ecbnh nh\u01b0: nobody, administrator, postmaster, manager, test, user, operator, webmaster, root, admin, support, info, postmaster, manager, test, user, oracle,\u2026 th\u00ec kh\u1ea3 n\u0103ng d\u00f2 password s\u1ebd \u0111i \u0111\u01b0\u1ee3c m\u1ed9t n\u1eeda trong vi\u1ec7c d\u00f2 password.<\/p>\n<p>V\u00ed d\u1ee5 v\u1ec1 c\u00e1c h\u1ec7 th\u1ed1ng d\u00f2 pass c\u1ee7a hacker:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-20003\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/cac-he-thong-do-pass-cua-hacker.jpg\" alt=\"c\u00e1c h\u1ec7 th\u1ed1ng d\u00f2 pass c\u1ee7a hacker \" width=\"425\" height=\"131\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/cac-he-thong-do-pass-cua-hacker.jpg 425w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/cac-he-thong-do-pass-cua-hacker-300x92.jpg 300w\" sizes=\"auto, (max-width: 425px) 100vw, 425px\" \/><\/p>\n<p>\u0110\u1ec3 n\u00e2ng cao m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cho VPS Linux, m\u1ed9t bi\u1ec7n ph\u00e1p hi\u1ec7u qu\u1ea3 l\u00e0 thay \u0111\u1ed5i t\u00ean c\u1ee7a c\u00e1c t\u00e0i kho\u1ea3n m\u1eb7c \u0111\u1ecbnh nh\u01b0 root, admin ho\u1eb7c user th\u00e0nh nh\u1eefng t\u00ean c\u00f3 \u0111\u1ed9 ph\u1ee9c t\u1ea1p cao h\u01a1n.<\/p>\n<p>Thay \u0111\u1ed5i t\u00ean ng\u01b0\u1eddi d\u00f9ng m\u1eb7c \u0111\u1ecbnh th\u00e0nh nh\u1eefng t\u00ean kh\u00f3 \u0111o\u00e1n s\u1ebd kh\u00f4ng ch\u1ec9 c\u1ea3i thi\u1ec7n b\u1ea3o m\u1eadt m\u00e0 c\u00f2n khi\u1ebfn h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n tr\u1edf n\u00ean kh\u00f3 b\u1ecb x\u00e2m nh\u1eadp h\u01a1n. H\u00e3y ch\u1eafc ch\u1eafn r\u1eb1ng b\u1ea1n ghi nh\u1edb ho\u1eb7c l\u01b0u tr\u1eef th\u00f4ng tin \u0111\u0103ng nh\u1eadp m\u1ed9t c\u00e1ch an to\u00e0n sau khi th\u1ef1c hi\u1ec7n c\u00e1c thay \u0111\u1ed5i n\u00e0y!<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Services\"><\/span>3. Services<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u00ean Linux, c\u00f3 r\u1ea5t nhi\u1ec1u d\u1ecbch v\u1ee5 kh\u00e1c nhau \u0111ang ch\u1ea1y, v\u00e0 n\u1ebfu b\u1ea1n kh\u00f4ng bi\u1ebft v\u00e0 v\u00f4 t\u00ecnh c\u00e0i \u0111\u1eb7t m\u1ed9t d\u1ecbch v\u1ee5 c\u00f3 l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt ho\u1eb7c c\u00e0i m\u1ed9t d\u1ecbch v\u1ee5 kh\u00f4ng \u0111\u1ea3m b\u1ea3o an to\u00e0n, \u0111i\u1ec1u n\u00e0y l\u00e0m cho c\u00e1c hacker d\u1ec5 d\u00e0ng khai th\u00e1c.<\/p>\n<p>V\u00ed d\u1ee5 nh\u01b0 c\u00e1c l\u1ed7i li\u00ean quan \u0111\u1ebfn Openssl ho\u1eb7c Heartbleed. V\u00ec v\u1eady, vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn c\u00e1c d\u1ecbch v\u1ee5 ho\u1ea1t \u0111\u1ed9ng tr\u00ean VPS ho\u1eb7c server l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng. \u0110\u1ec3 bi\u1ebft r\u00f5 d\u1ecbch v\u1ee5 n\u00e0o \u0111ang ch\u1ea1y tr\u00ean server c\u1ee7a b\u1ea1n, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra tr\u1ef1c ti\u1ebfp tr\u00ean Server\/VPS b\u1eb1ng l\u1ec7nh:<\/p>\n<pre>service --status-all | grep 'running'<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-20006\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-dich-vu-chay-tren-Linux.jpg\" alt=\"Ki\u1ec3m tra d\u1ecbch v\u1ee5 ch\u1ea1y tr\u00ean Linux\" width=\"428\" height=\"361\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-dich-vu-chay-tren-Linux.jpg 428w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-dich-vu-chay-tren-Linux-300x253.jpg 300w\" sizes=\"auto, (max-width: 428px) 100vw, 428px\" \/><\/p>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho VPS c\u1ee7a b\u1ea1n, vi\u1ec7c ki\u1ec3m tra v\u00e0 qu\u1ea3n l\u00fd c\u00e1c d\u1ecbch v\u1ee5 \u0111ang ch\u1ea1y l\u00e0 r\u1ea5t quan tr\u1ecdng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 quy tr\u00ecnh chi ti\u1ebft \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh, d\u1eebng, v\u00e0 g\u1ee1 b\u1ecf c\u00e1c d\u1ecbch v\u1ee5 kh\u00f4ng c\u1ea7n thi\u1ebft:<\/p>\n<p><strong>X\u00e1c \u0111\u1ecbnh r\u00f5 nh\u1eefng d\u1ecbch v\u1ee5 n\u00e0o c\u1ea7n thi\u1ebft v\u00e0 d\u1ecbch v\u1ee5 n\u00e0o l\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft<\/strong>:<\/p>\n<ul>\n<li><strong>D\u1ecbch v\u1ee5 c\u1ea7n thi\u1ebft<\/strong>: Nh\u1eefng d\u1ecbch v\u1ee5 m\u00e0 b\u1ea1n bi\u1ebft l\u00e0 c\u1ea7n thi\u1ebft cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ee9ng d\u1ee5ng ho\u1eb7c h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 kh\u00f4ng c\u1ea7n thi\u1ebft<\/strong>: Nh\u1eefng d\u1ecbch v\u1ee5 kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ho\u1eb7c kh\u00f4ng li\u00ean quan \u0111\u1ebfn nhu c\u1ea7u hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<p><strong>Sao l\u01b0u nh\u1eefng d\u1eef li\u1ec7u quan tr\u1ecdng<\/strong>:<\/p>\n<ul>\n<li>Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o, h\u00e3y sao l\u01b0u d\u1eef li\u1ec7u quan tr\u1ecdng. B\u1ea1n c\u00f3 th\u1ec3 sao l\u01b0u to\u00e0n b\u1ed9 VPS v\u00e0 server ho\u1eb7c ch\u1ec9 sao l\u01b0u c\u00e1c t\u1ec7p v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft.<\/li>\n<\/ul>\n<p><strong>Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng<\/strong>:<\/p>\n<ul>\n<li>Sau khi d\u1eebng nh\u1eefng d\u1ecbch v\u1ee5 kh\u00f4ng c\u1ea7n thi\u1ebft, h\u00e3y theo d\u00f5i h\u1ec7 th\u1ed1ng th\u01b0\u1eddng xuy\u00ean trong m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi th\u1ee9 tr\u00ean m\u00e1y ch\u1ee7 v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng v\u00e0 kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1 n\u00e0o ph\u00e1t sinh.<\/li>\n<\/ul>\n<p><strong>G\u1ee1 b\u1ecf d\u1ecbch v\u1ee5 v\u0129nh vi\u1ec5n<\/strong>:<\/p>\n<ul>\n<li>N\u1ebfu sau m\u1ed9t th\u1eddi gian theo d\u00f5i m\u00e0 b\u1ea1n th\u1ea5y r\u1eb1ng d\u1ecbch v\u1ee5 \u0111\u00f3 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng, b\u1ea1n c\u00f3 th\u1ec3 g\u1ee1 b\u1ecf n\u00f3 v\u0129nh vi\u1ec5n.<\/li>\n<\/ul>\n<p>B\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng d\u1ecbch v\u1ee5 c\u1ea7n thi\u1ebft m\u1edbi ho\u1ea1t \u0111\u1ed9ng, t\u1eeb \u0111\u00f3 n\u00e2ng cao t\u00ednh b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a VPS. H\u00e3y lu\u00f4n nh\u1edb sao l\u01b0u d\u1eef li\u1ec7u tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o!<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4-SSH-Telnet\"><\/span>4. SSH, Telnet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110i\u1ec3m kh\u00e1c bi\u1ec7t quan tr\u1ecdng gi\u1eefa SSH v\u00e0 Telnet ch\u00ednh l\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt. H\u1ea7u h\u1ebft ng\u01b0\u1eddi d\u00f9ng hi\u1ec7n nay qu\u1ea3n tr\u1ecb VPS ho\u1eb7c server Linux th\u00f4ng qua SSH. Th\u01b0\u1eddng th\u00ec b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n do nh\u00e0 cung c\u1ea5p c\u1ea5p ho\u1eb7c t\u1ef1 t\u1ea1o tr\u00ean server c\u1ee7a m\u00ecnh.<\/p>\n<figure id=\"attachment_20013\" aria-describedby=\"caption-attachment-20013\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20013\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Bao-mat-VPS-Linux-voi-SSH-telnet.jpg\" alt=\"B\u1ea3o m\u1eadt VPS Linux v\u1edbi SSH, telnet\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Bao-mat-VPS-Linux-voi-SSH-telnet.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Bao-mat-VPS-Linux-voi-SSH-telnet-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Bao-mat-VPS-Linux-voi-SSH-telnet-768x480.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Bao-mat-VPS-Linux-voi-SSH-telnet-750x469.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-20013\" class=\"wp-caption-text\">B\u1ea3o m\u1eadt VPS Linux v\u1edbi SSH, telnet<\/figcaption><\/figure>\n<p>Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng, n\u1ebfu m\u00e1y t\u00ednh c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n b\u1ecb hack, VPS ho\u1eb7c server c\u1ee7a b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng. \u0110\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i an to\u00e0n, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng SSH key thay v\u00ec m\u1eadt kh\u1ea9u. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ch\u1ec9 an to\u00e0n h\u01a1n m\u00e0 c\u00f2n gi\u00fap ng\u0103n ch\u1eb7n vi\u1ec7c l\u1ed9 th\u00f4ng tin m\u1eadt kh\u1ea9u.<\/p>\n<p>\u0110\u1ec3 b\u1ea3o v\u1ec7 VPS v\u00e0 server kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt, b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng hai gi\u1ea3i ph\u00e1p sau:<\/p>\n<h4>C\u00e1ch 1: \u0110\u1ed5i Port SSH<\/h4>\n<p>Thay \u0111\u1ed5i c\u1ed5ng m\u1eb7c \u0111\u1ecbnh c\u1ee7a d\u1ecbch v\u1ee5 SSH t\u1eeb 22 sang m\u1ed9t c\u1ed5ng kh\u00e1c gi\u00fap gi\u1ea3m thi\u1ec3u nguy c\u01a1 b\u1ecb t\u1ea5n c\u00f4ng t\u1eeb c\u00e1c bot t\u1ef1 \u0111\u1ed9ng gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng password cao h\u01a1n.<\/p>\n<p>C\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m ch\u1ed1ng virus tr\u00ean m\u00e1y t\u00ednh local \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin \u0111\u0103ng nh\u1eadp nh\u01b0: ph\u1ea7n m\u1ec1m <a href=\"https:\/\/www.avast.com\/vi-vn\/free-antivirus-download#pc\" rel=\"nofollow noopener\" target=\"_blank\">Avast Free Antivirus<\/a> l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn t\u1ed1t v\u1edbi nhi\u1ec1u t\u00ednh n\u0103ng b\u1ea3o m\u1eadt.<\/p>\n<h4>C\u00e1ch 2: S\u1eed d\u1ee5ng KEY SSH<\/h4>\n<p>Nh\u01b0 \u0111\u00e3 n\u00eau \u1edf ph\u1ea7n 1, h\u00e3y s\u1eed d\u1ee5ng c\u1eb7p kh\u00f3a SSH thay v\u00ec m\u1eadt kh\u1ea9u \u0111\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o VPS gi\u00fap t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt.<\/p>\n<p>\u0110\u1ea3m b\u1ea3o r\u1eb1ng file key \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u1edf n\u01a1i an to\u00e0n v\u00e0 kh\u00f4ng chia s\u1ebb v\u1edbi b\u1ea5t k\u1ef3 ng\u01b0\u1eddi n\u00e0o kh\u00e1c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5-Port\"><\/span>5. Port<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Port l\u00e0 m\u1ed9t trong nh\u1eefng kh\u00e1i ni\u1ec7m quen thu\u1ed9c v\u00e0 d\u1ec5 hi\u1ec3u \u0111\u1ed1i v\u1edbi nh\u1eefng ai l\u00e0m qu\u1ea3n tr\u1ecb h\u1ec7 th\u1ed1ng. C\u00e1c port ph\u1ed5 bi\u1ebfn nh\u01b0 80 HTTP, 8080 HTTPS, 21 FTP, 22 SSH, 53 DNS, v\u00e0 3306 MySQL&#8230; th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1edf s\u1eb5n theo m\u1eb7c \u0111\u1ecbnh.<\/p>\n<p>Tuy nhi\u00ean, vi\u1ec7c m\u1edf nh\u1eefng port kh\u00f4ng c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 t\u1ea1o ra l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. \u0110\u1ec3 ki\u1ec3m so\u00e1t v\u1ea5n \u0111\u1ec1 n\u00e0y, Firewall th\u01b0\u1eddng \u0111\u00f3ng vai tr\u00f2 qu\u1ea3n l\u00fd c\u00e1c port v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho h\u1ec7 th\u1ed1ng.<\/p>\n<figure id=\"attachment_20014\" aria-describedby=\"caption-attachment-20014\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20014\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-cac-port-dang-mo-tren-VPS-hoac-server.jpg\" alt=\"Ki\u1ec3m tra c\u00e1c port \u0111ang m\u1edf tr\u00ean VPS ho\u1eb7c server \" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-cac-port-dang-mo-tren-VPS-hoac-server.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-cac-port-dang-mo-tren-VPS-hoac-server-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-cac-port-dang-mo-tren-VPS-hoac-server-768x480.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/10\/Kiem-tra-cac-port-dang-mo-tren-VPS-hoac-server-750x469.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-20014\" class=\"wp-caption-text\">Ki\u1ec3m tra c\u00e1c port \u0111ang m\u1edf tr\u00ean VPS ho\u1eb7c server<\/figcaption><\/figure>\n<p>\u0110\u1ec3 ki\u1ec3m tra c\u00e1c port \u0111ang m\u1edf tr\u00ean VPS ho\u1eb7c server c\u1ee7a b\u1ea1n, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ki\u1ec3m tra qua li\u00ean k\u1ebft sau: <strong>http:\/\/mxtoolbox.com\/PortScan.aspx<\/strong>.<\/p>\n<p>H\u00e3y ki\u1ec3m tra t\u1eebng d\u1ecbch v\u1ee5 \u0111ang ch\u1ea1y tr\u00ean server c\u1ee7a b\u1ea1n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh d\u1ecbch v\u1ee5 n\u00e0o s\u1eed d\u1ee5ng port n\u00e0o, v\u00e0 nh\u1eefng port n\u00e0o hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c m\u1edf. N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng t\u01b0\u1eddng l\u1eeda, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea5u h\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp ch\u00ednh x\u00e1c.<\/p>\n<p>C\u00e1c port kh\u00f4ng c\u1ea7n thi\u1ebft n\u00ean \u0111\u01b0\u1ee3c ch\u1eb7n l\u1ea1i, trong khi c\u00e1c port c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 m\u1edf ra. Tr\u00ean Linux, d\u1ecbch v\u1ee5 Iptable th\u00f4ng qua t\u01b0\u1eddng l\u1eeda r\u1ea5t hi\u1ec7u qu\u1ea3 \u0111\u1ec3 gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd vi\u1ec7c n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"6-Cau-hinh-tuong-lua-iptables-firewalld-UFW\"><\/span>6. C\u1ea5u h\u00ecnh t\u01b0\u1eddng l\u1eeda (iptables, firewalld, UFW)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u01b0\u1eddng l\u1eeda (Firewall) l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean. N\u00f3 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng v\u00e0o v\u00e0 ra kh\u1ecfi VPS.<\/p>\n<ul>\n<li><strong>UFW (Uncomplicated Firewall):<\/strong> L\u00e0 l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi cho ng\u01b0\u1eddi m\u1edbi v\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean mu\u1ed1n s\u1ef1 \u0111\u01a1n gi\u1ea3n tr\u00ean c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh d\u1ef1a tr\u00ean Debian\/Ubuntu. N\u00f3 d\u1ec5 d\u00e0ng cho ph\u00e9p ho\u1eb7c t\u1eeb ch\u1ed1i truy c\u1eadp theo c\u1ed5ng (port) ho\u1eb7c \u0111\u1ecba ch\u1ec9 IP.<\/li>\n<li><strong>IPTables\/Firewalld:<\/strong> Cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t chi ti\u1ebft h\u01a1n \u1edf c\u1ea5p \u0111\u1ed9 g\u00f3i tin, ph\u00f9 h\u1ee3p cho <strong>SysAdmin<\/strong> c\u00f3 kinh nghi\u1ec7m ho\u1eb7c c\u00e1c m\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u \u0111\u1ecbnh tuy\u1ebfn ph\u1ee9c t\u1ea1p.<\/li>\n<li><strong>Nguy\u00ean t\u1eafc chung:<\/strong> Lu\u00f4n <strong>\u0111\u00f3ng t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng<\/strong> kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 ch\u1ec9 m\u1edf c\u00e1c c\u1ed5ng d\u1ecbch v\u1ee5 c\u00f4ng c\u1ed9ng nh\u01b0 HTTP (80), HTTPS (443), v\u00e0 c\u1ed5ng SSH t\u00f9y ch\u1ec9nh c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"7-Cai-dat-Fail2Ban-chong-brute-force\"><\/span>7. C\u00e0i \u0111\u1eb7t Fail2Ban ch\u1ed1ng brute force<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Fail2Ban VPS<\/strong> l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>brute force<\/strong> t\u1ef1 \u0111\u1ed9ng v\u00e0o c\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 SSH, Web server (Apache\/Nginx) hay FTP. <strong>Fail2Ban<\/strong> s\u1ebd t\u1ef1 \u0111\u1ed9ng qu\u00e9t c\u00e1c file log, ph\u00e1t hi\u1ec7n c\u00e1c \u0111\u1ecba ch\u1ec9 IP th\u1ef1c hi\u1ec7n qu\u00e1 nhi\u1ec1u l\u1ea7n \u0111\u0103ng nh\u1eadp th\u1ea5t b\u1ea1i trong m\u1ed9t th\u1eddi gian ng\u1eafn, v\u00e0 t\u1ef1 \u0111\u1ed9ng c\u1ea5m (ban) c\u00e1c IP \u0111\u00f3 th\u00f4ng qua t\u01b0\u1eddng l\u1eeda.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"8-Tao-user-quyen-han-che-de-bao-mat-VPS-Linux\"><\/span>8. T\u1ea1o user quy\u1ec1n h\u1ea1n ch\u1ebf \u0111\u1ec3 b\u1ea3o m\u1eadt VPS Linux<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n n\u00ean c\u1ea5p quy\u1ec1n \u0111\u00fang theo nhu c\u1ea7u th\u1ef1c t\u1ebf cho t\u1eebng t\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c d\u1ecbch v\u1ee5, tr\u00e1nh ph\u00e2n quy\u1ec1n d\u01b0 th\u1eeba g\u00e2y r\u1ee7i ro b\u1ea3o m\u1eadt. \u0110\u1ed3ng th\u1eddi, h\u00e3y t\u1ea1o m\u1ed9t t\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c h\u1eb1ng ng\u00e0y thay v\u00ec s\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n c\u00f3 quy\u1ec1n qu\u1ea3n tr\u1ecb cao nh\u1ea5t cho c\u00f4ng vi\u1ec7c th\u01b0\u1eddng xuy\u00ean.<\/p>\n<p>Ngo\u00e0i ra, n\u00ean s\u1eed d\u1ee5ng sudo tr\u00ean Linux ho\u1eb7c Run as Administrator tr\u00ean Windows Server khi th\u1eadt s\u1ef1 c\u1ea7n quy\u1ec1n n\u00e2ng cao. C\u00e1ch n\u00e0y gi\u00fap h\u1ea1n ch\u1ebf vi\u1ec7c \u0111\u0103ng nh\u1eadp tr\u1ef1c ti\u1ebfp b\u1eb1ng t\u00e0i kho\u1ea3n qu\u1ea3n tr\u1ecb t\u1ed1i cao, t\u1eeb \u0111\u00f3 gi\u1ea3m thi\u1ec3u m\u1ee9c \u0111\u1ed9 thi\u1ec7t h\u1ea1i n\u1ebfu m\u1ed9t t\u00e0i kho\u1ea3n b\u1ecb x\u00e2m nh\u1eadp.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"9-Cap-nhat-he-dieu-hanh-va-phan-mem-VPS-thuong-xuyen\"><\/span>9. C\u1eadp nh\u1eadt h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 ph\u1ea7n m\u1ec1m VPS th\u01b0\u1eddng xuy\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c b\u1ea3n c\u1eadp nh\u1eadt \u0111\u1ecbnh k\u1ef3 gi\u00fap kh\u1eafc ph\u1ee5c nh\u1eefng l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt quan tr\u1ecdng. Khi b\u1ecf qua vi\u1ec7c n\u00e2ng c\u1ea5p h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 ph\u1ea7n m\u1ec1m, h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u1ed1i m\u1eb7t v\u1edbi nguy c\u01a1 b\u1ecb khai th\u00e1c:<\/p>\n<p>Ph\u1ea1m vi c\u1eadp nh\u1eadt bao g\u1ed3m h\u1ec7 \u0111i\u1ec1u h\u00e0nh, web server (Apache, Nginx), PHP, MySQL v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng li\u00ean quan. B\u1ea1n n\u00ean c\u1ea5u h\u00ecnh c\u1eadp nh\u1eadt t\u1ef1 \u0111\u1ed9ng cho c\u00e1c b\u1ea3n v\u00e1 b\u1ea3o m\u1eadt, \u0111\u1ed3ng th\u1eddi ki\u1ec3m tra v\u00e0 n\u00e2ng c\u1ea5p th\u1ee7 c\u00f4ng theo chu k\u1ef3. Tr\u01b0\u1edbc c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt l\u1edbn, c\u1ea7n th\u1ef1c hi\u1ec7n sao l\u01b0u (backup) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n d\u1eef li\u1ec7u.<\/p>\n<p>L\u1ec7nh c\u01a1 b\u1ea3n:<\/p>\n<ul>\n<li><strong>Ubuntu\/Debian<\/strong>: <code>sudo apt update &amp;&amp; sudo apt upgrade<\/code><\/li>\n<li><strong>CentOS\/RHEL<\/strong>: <code>sudo yum update (ho\u1eb7c sudo dnf update)<\/code><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"10-Bat-xac-thuc-da-yeu-to-MFA-cho-VPS\"><\/span>10. B\u1eadt x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) cho VPS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>X\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) y\u00eau c\u1ea7u nh\u1eadp th\u00eam m\u1ed9t m\u00e3 x\u00e1c minh t\u1eeb thi\u1ebft b\u1ecb c\u00e1 nh\u00e2n nh\u01b0 \u0111i\u1ec7n tho\u1ea1i sau b\u01b0\u1edbc nh\u1eadp m\u1eadt kh\u1ea9u. L\u1edbp x\u00e1c th\u1ef1c b\u1ed5 sung n\u00e0y gi\u00fap t\u0103ng m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7 t\u00e0i kho\u1ea3n, h\u1ea1n ch\u1ebf r\u1ee7i ro t\u1eeb c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u00f2 m\u1eadt kh\u1ea9u Brute Force v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u ngay c\u1ea3 khi m\u1eadt kh\u1ea9u b\u1ecb l\u1ed9.<\/p>\n<p>B\u1ea1n c\u00f3 th\u1ec3 t\u00edch h\u1ee3p c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 Google Authenticator ho\u1eb7c Authy cho SSH v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 web m\u1ed9t c\u00e1ch thu\u1eadn ti\u1ec7n.<\/p>\n<figure id=\"attachment_39500\" aria-describedby=\"caption-attachment-39500\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-39500\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Bat-xac-thuc-da-yeu-to-MFA.jpg\" alt=\"B\u1eadt x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA)\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Bat-xac-thuc-da-yeu-to-MFA.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Bat-xac-thuc-da-yeu-to-MFA-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Bat-xac-thuc-da-yeu-to-MFA-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-39500\" class=\"wp-caption-text\">B\u1eadt x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA)<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"11-Vo-hieu-hoa-dich-vu-khong-dung\"><\/span>11. V\u00f4 hi\u1ec7u h\u00f3a d\u1ecbch v\u1ee5 kh\u00f4ng d\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed7i d\u1ecbch v\u1ee5 kh\u00f4ng c\u1ea7n thi\u1ebft \u0111ang ho\u1ea1t \u0111\u1ed9ng tr\u00ean m\u00e1y ch\u1ee7 \u0111\u1ec1u c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh \u0111i\u1ec3m y\u1ebfu b\u1ea3o m\u1eadt. Ch\u1eb3ng h\u1ea1n, giao th\u1ee9c chia s\u1ebb t\u1ec7p SMB t\u1eebng b\u1ecb khai th\u00e1c trong c\u00e1c chi\u1ebfn d\u1ecbch m\u00e3 \u0111\u1ed9c t\u1ed1ng ti\u1ec1n quy m\u00f4 l\u1edbn. V\u00ec v\u1eady, vi\u1ec7c r\u00e0 so\u00e1t v\u00e0 t\u1eaft c\u00e1c giao th\u1ee9c ho\u1eb7c d\u1ecbch v\u1ee5 kh\u00f4ng s\u1eed d\u1ee5ng l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng nh\u1eb1m c\u1ee7ng c\u1ed1 an ninh h\u1ec7 th\u1ed1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"12-Chon-nha-cung-cap-VPS-co-nen-tang-bao-mat-tot\"><\/span>12. Ch\u1ecdn nh\u00e0 cung c\u1ea5p VPS c\u00f3 n\u1ec1n t\u1ea3ng b\u1ea3o m\u1eadt t\u1ed1t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ee9c \u0111\u1ed9 an to\u00e0n c\u1ee7a VPS ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o h\u1ea1 t\u1ea7ng t\u1eeb nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5. M\u1ed9t \u0111\u01a1n v\u1ecb uy t\u00edn s\u1ebd \u0111\u1ea3m b\u1ea3o b\u1ea3o m\u1eadt \u1edf t\u1ea7ng v\u1eadt l\u00fd, b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng m\u1ea1ng v\u00e0 duy tr\u00ec an to\u00e0n cho l\u1edbp \u1ea3o h\u00f3a. Khi l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p c\u00f3 cam k\u1ebft r\u00f5 r\u00e0ng v\u1ec1 b\u1ea3o m\u1eadt, b\u1ea1n s\u1ebd c\u00f3 n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc \u0111\u1ec3 c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 n\u1ed9i b\u1ed9 ph\u00e1t huy hi\u1ec7u qu\u1ea3 t\u1ed1i \u0111a.<\/p>\n<div class=\"highlight-cta-box\">\n<p>Sau khi tri\u1ec3n khai \u0111\u1ea7y \u0111\u1ee7 c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n cho m\u00e1y ch\u1ee7, \u0111\u1ec3 n\u00e2ng cao h\u01a1n n\u1eefa m\u1ee9c \u0111\u1ed9 an to\u00e0n v\u00e0 t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng, b\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng <strong>d\u1ecbch v\u1ee5 VPS hi\u1ec7u n\u0103ng cao t\u1ea1i InterData<\/strong>. H\u1ea1 t\u1ea7ng \u0111\u01b0\u1ee3c trang b\u1ecb <strong>CPU th\u1ebf h\u1ec7 m\u1edbi<\/strong> v\u1edbi kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111a lu\u1ed3ng m\u1ea1nh m\u1ebd, \u0111\u00e1p \u1ee9ng t\u1ed1t c\u00e1c website c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn, \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p ho\u1eb7c h\u1ec7 th\u1ed1ng c\u1ea7n t\u00e0i nguy\u00ean t\u00ednh to\u00e1n cao.<\/p>\n<p>K\u1ebft h\u1ee3p c\u00f9ng <strong>\u1ed5 c\u1ee9ng NVMe t\u1ed1c \u0111\u1ed9 cao<\/strong> gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 truy xu\u1ea5t c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i t\u1ed5ng th\u1ec3 c\u1ee7a website. Ngo\u00e0i ra, \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt <strong>h\u1ed7 tr\u1ee3 24\/7<\/strong> s\u1eb5n s\u00e0ng \u0111\u1ed3ng h\u00e0nh trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh, t\u1ed1i \u01b0u v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 khi c\u1ea7n thi\u1ebft. Gi\u1ea3i ph\u00e1p VPS c\u1ee7a InterData mang \u0111\u1ebfn n\u1ec1n t\u1ea3ng \u1ed5n \u0111\u1ecbnh, hi\u1ec7u su\u1ea5t cao v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh an to\u00e0n cho c\u00e1c t\u00e1c v\u1ee5 quan tr\u1ecdng tr\u00ean m\u00e1y ch\u1ee7.<\/p>\n<a href=\"https:\/\/interdata.vn\/thue-vps\/\" class=\"button primary is-primary is-medium\">\n\t\t<span>THAM KH\u1ea2O B\u1ea2NG GI\u00c1 CH\u1ea4T L\u01af\u1ee2NG CAO INTERDATA<\/span>\n\t<\/a>\n\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Cac-bien-phap-tang-cuong-bao-mat-VPS-nang-cao\"><\/span>C\u00e1c bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt VPS n\u00e2ng cao<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng s\u1ea3n ph\u1ea9m ho\u1eb7c c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 kinh nghi\u1ec7m h\u01a1n (<strong>SysAdmin\/DevOps<\/strong>), c\u1ea7n \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p <strong>t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt VPS<\/strong> sau \u0111\u1ec3 \u0111\u1ea1t m\u1ee9c \u0111\u1ed9 an ninh cao h\u01a1n:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gioi-han-tai-nguyen-va-cach-ly-ung-dung\"><\/span>Gi\u1edbi h\u1ea1n t\u00e0i nguy\u00ean v\u00e0 c\u00e1ch ly \u1ee9ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 <strong>container<\/strong> nh\u01b0 <strong>Docker<\/strong> ho\u1eb7c <strong>LXC<\/strong> \u0111\u1ec3 \u0111\u00f3ng g\u00f3i v\u00e0 <strong>c\u00e1ch ly \u1ee9ng d\u1ee5ng<\/strong> web kh\u1ecfi h\u1ec7 \u0111i\u1ec1u h\u00e0nh m\u00e1y ch\u1ee7 v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u1ebfu m\u1ed9t \u1ee9ng d\u1ee5ng b\u1ecb x\u00e2m nh\u1eadp, k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd kh\u00f4ng th\u1ec3 d\u1ec5 d\u00e0ng leo thang quy\u1ec1n v\u00e0 truy c\u1eadp v\u00e0o to\u00e0n b\u1ed9 VPS.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-soat-quyen-truy-cap-va-file-File-Permissions\"><\/span>Ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp v\u00e0 file (File Permissions)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>B\u1ea3o m\u1eadt quy\u1ec1n file Linux<\/strong> l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng. \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c th\u01b0 m\u1ee5c quan tr\u1ecdng, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u01b0 m\u1ee5c ch\u1ee9a m\u00e3 ngu\u1ed3n website, kh\u00f4ng c\u00f3 quy\u1ec1n ghi (write permission) qu\u00e1 r\u1ed9ng (v\u00ed d\u1ee5: kh\u00f4ng bao gi\u1edd d\u00f9ng quy\u1ec1n <strong><code>chmod 777<\/code><\/strong>). S\u1eed d\u1ee5ng l\u1ec7nh <strong><code>chown<\/code><\/strong> v\u00e0 <strong><code>chmod<\/code><\/strong> \u0111\u00fang chu\u1ea9n \u0111\u1ec3 gi\u1edbi h\u1ea1n ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u1ecdc, ghi, v\u00e0 th\u1ef1c thi file.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-SELinux-hoac-AppArmor\"><\/span>S\u1eed d\u1ee5ng SELinux ho\u1eb7c AppArmor<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>SELinux<\/strong> (Security-Enhanced Linux) v\u00e0 <strong>AppArmor<\/strong> l\u00e0 c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m so\u00e1t truy c\u1eadp b\u1eaft bu\u1ed9c (MAC &#8211; Mandatory Access Control). Thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o quy\u1ec1n truy c\u1eadp th\u00f4ng th\u01b0\u1eddng (<strong>Discretionary Access Control<\/strong>), c\u00e1c c\u00f4ng c\u1ee5 n\u00e0y thi\u1ebft l\u1eadp c\u00e1c ch\u00ednh s\u00e1ch ch\u1eb7t ch\u1ebd \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c nh\u1eefng g\u00ec m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh c\u00f3 th\u1ec3 l\u00e0m (v\u00ed d\u1ee5: ng\u0103n Apache truy c\u1eadp v\u00e0o c\u00e1c th\u01b0 m\u1ee5c ngo\u00e0i th\u01b0 m\u1ee5c web).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cong-cu-ho-tro-bao-mat-VPS-Linux\"><\/span>C\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 b\u1ea3o m\u1eadt VPS Linux<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S\u1eed d\u1ee5ng c\u00e1c <strong>c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt VPS Linux<\/strong> l\u00e0 c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng h\u00f3a vi\u1ec7c ph\u00f2ng th\u1ee7 v\u00e0 gi\u00e1m s\u00e1t:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"ClamAV-%E2%80%93-quet-virus-malware\"><\/span>ClamAV \u2013 qu\u00e9t virus &amp; malware<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>ClamAV<\/strong> l\u00e0 ph\u1ea7n m\u1ec1m di\u1ec7t virus m\u00e3 ngu\u1ed3n m\u1edf ph\u1ed5 bi\u1ebfn. B\u1ea1n n\u00ean c\u00e0i \u0111\u1eb7t v\u00e0 ch\u1ea1y <strong>qu\u00e9t malware VPS<\/strong> \u0111\u1ecbnh k\u1ef3, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean c\u00e1c th\u01b0 m\u1ee5c ch\u1ee9a d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng t\u1ea3i l\u00ean, \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c file \u0111\u1ed9c h\u1ea1i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"RKhunter-%E2%80%93-phat-hien-rootkit\"><\/span>RKhunter \u2013 ph\u00e1t hi\u1ec7n rootkit<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Rootkit<\/strong> l\u00e0 m\u1ed9t lo\u1ea1i m\u00e3 \u0111\u1ed9c tinh vi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u1ea9n m\u00ecnh v\u00e0 duy tr\u00ec quy\u1ec1n truy c\u1eadp <strong>Root<\/strong>. <strong>RKhunter<\/strong> (Rootkit Hunter) l\u00e0 c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng gi\u00fap qu\u00e9t c\u00e1c file h\u1ec7 th\u1ed1ng v\u00e0 c\u1ea5u h\u00ecnh \u0111\u1ec3 ph\u00e1t hi\u1ec7n d\u1ea5u v\u1ebft c\u1ee7a rootkit v\u00e0 <strong>backdoor<\/strong> ti\u1ec1m \u1ea9n.<\/p>\n<figure id=\"attachment_39501\" aria-describedby=\"caption-attachment-39501\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-39501\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Cong-cu-ho-tro-bao-mat-VPS-Linux.jpg\" alt=\"C\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 b\u1ea3o m\u1eadt VPS Linux\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Cong-cu-ho-tro-bao-mat-VPS-Linux.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Cong-cu-ho-tro-bao-mat-VPS-Linux-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/09\/Cong-cu-ho-tro-bao-mat-VPS-Linux-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-39501\" class=\"wp-caption-text\">C\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 b\u1ea3o m\u1eadt VPS Linux<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"CSF-ConfigServer-Security-Firewall\"><\/span>CSF (ConfigServer Security &amp; Firewall)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>CSF firewall<\/strong> l\u00e0 m\u1ed9t b\u1ed9 c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt t\u00edch h\u1ee3p, bao g\u1ed3m <strong>t\u01b0\u1eddng l\u1eeda<\/strong> d\u1ec5 qu\u1ea3n l\u00fd, t\u00ednh n\u0103ng ch\u1ed1ng <strong>t\u1ea5n c\u00f4ng brute force<\/strong>, v\u00e0 gi\u1edbi h\u1ea1n k\u1ebft n\u1ed1i. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn m\u1ea1nh m\u1ebd h\u01a1n <strong>UFW<\/strong> d\u00e0nh cho nh\u1eefng ng\u01b0\u1eddi c\u1ea7n ki\u1ec3m so\u00e1t chi ti\u1ebft h\u01a1n m\u00e0 v\u1eabn d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lynis-%E2%80%93-cong-cu-audit-bao-mat-Linux\"><\/span>Lynis \u2013 c\u00f4ng c\u1ee5 audit b\u1ea3o m\u1eadt Linux<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Lynis<\/strong> l\u00e0 c\u00f4ng c\u1ee5 <strong>audit b\u1ea3o m\u1eadt Linux<\/strong> gi\u00fap qu\u00e9t v\u00e0 ki\u1ec3m tra s\u00e2u h\u01a1n 250 b\u00e0i ki\u1ec3m tra v\u1ec1 c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ea5u h\u00ecnh, c\u1eadp nh\u1eadt v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh b\u1ea3o m\u1eadt k\u00e9m. \u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 tuy\u1ec7t v\u1eddi \u0111\u1ec3 b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o chi ti\u1ebft v\u1ec1 m\u1ee9c \u0111\u1ed9 <strong>b\u1ea3o m\u1eadt VPS Linux<\/strong> hi\u1ec7n t\u1ea1i v\u00e0 nh\u1eefng \u0111i\u1ec3m c\u1ea7n c\u1ea3i thi\u1ec7n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Best-Practices-bao-mat-VPS-Linux-cho-doanh-nghiep\"><\/span>Best Practices b\u1ea3o m\u1eadt VPS Linux cho doanh nghi\u1ec7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 duy tr\u00ec m\u00f4i tr\u01b0\u1eddng VPS Linux an to\u00e0n trong d\u00e0i h\u1ea1n, c\u00e1c doanh nghi\u1ec7p c\u1ea7n \u00e1p d\u1ee5ng c\u00e1c <strong>best practices b\u1ea3o m\u1eadt VPS<\/strong> sau:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thiet-lap-monitoring-va-canh-bao-an-ninh\"><\/span>Thi\u1ebft l\u1eadp monitoring v\u00e0 c\u1ea3nh b\u00e1o an ninh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng c\u00e1c gi\u1ea3i ph\u00e1p <strong>monitoring VPS Linux<\/strong> (v\u00ed d\u1ee5: Prometheus, Grafana, Zabbix) \u0111\u1ec3 theo d\u00f5i c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u01b0 t\u1ea3i CPU, RAM, I\/O v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng (v\u00ed d\u1ee5: s\u1ed1 l\u1ea7n \u0111\u0103ng nh\u1eadp th\u1ea5t b\u1ea1i t\u0103ng \u0111\u1ed9t bi\u1ebfn). Thi\u1ebft l\u1eadp <strong>c\u1ea3nh b\u00e1o an ninh<\/strong> t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u1ea3n \u1ee9ng ngay l\u1eadp t\u1ee9c khi c\u00f3 s\u1ef1 c\u1ed1.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ap-dung-Zero-Trust-Security\"><\/span>\u00c1p d\u1ee5ng Zero Trust Security<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Zero Trust Security<\/strong> l\u00e0 m\u00f4 h\u00ecnh b\u1ea3o m\u1eadt hi\u1ec7n \u0111\u1ea1i. Thay v\u00ec tin t\u01b0\u1edfng b\u1ea5t k\u1ef3 ng\u01b0\u1eddi d\u00f9ng hay thi\u1ebft b\u1ecb n\u00e0o b\u00ean trong m\u1ea1ng l\u01b0\u1edbi, <strong>Zero Trust VPS<\/strong> y\u00eau c\u1ea7u <strong>x\u00e1c minh nghi\u00eam ng\u1eb7t<\/strong> m\u1ecdi y\u00eau c\u1ea7u truy c\u1eadp, b\u1ea5t k\u1ec3 ngu\u1ed3n g\u1ed1c c\u1ee7a ch\u00fang. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng c\u00e1ch gi\u1edbi h\u1ea1n nghi\u00eam ng\u1eb7t truy c\u1eadp m\u1ea1ng gi\u1eefa c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-tra-bao-mat-dinh-ky-Pentest-Audit\"><\/span>Ki\u1ec3m tra b\u1ea3o m\u1eadt \u0111\u1ecbnh k\u1ef3 (Pentest, Audit)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Th\u01b0\u1eddng xuy\u00ean th\u1ef1c hi\u1ec7n <strong>ki\u1ec3m tra th\u00e2m nh\u1eadp (Pentest VPS)<\/strong> ho\u1eb7c <strong>Audit b\u1ea3o m\u1eadt<\/strong> \u0111\u1ed9c l\u1eadp. C\u00e1c chuy\u00ean gia s\u1ebd m\u00f4 ph\u1ecfng cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u1ec3 t\u00ecm ra l\u1ed7 h\u1ed5ng tr\u01b0\u1edbc khi tin t\u1eb7c l\u00e0m \u0111i\u1ec1u \u0111\u00f3, \u0111\u1ea3m b\u1ea3o b\u1ea1n lu\u00f4n \u0111i tr\u01b0\u1edbc m\u1ed9t b\u01b0\u1edbc trong vi\u1ec7c b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Xay-dung-quy-trinh-quan-tri-bao-mat-noi-bo\"><\/span>X\u00e2y d\u1ef1ng quy tr\u00ecnh qu\u1ea3n tr\u1ecb b\u1ea3o m\u1eadt n\u1ed9i b\u1ed9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e0o t\u1ea1o \u0111\u1ed9i ng\u0169 qu\u1ea3n tr\u1ecb vi\u00ean v\u1ec1 <strong>quy tr\u00ecnh qu\u1ea3n tr\u1ecb b\u1ea3o m\u1eadt<\/strong> ti\u00eau chu\u1ea9n, t\u1eeb c\u00e1ch \u0111\u1eb7t m\u1eadt kh\u1ea9u, quy tr\u00ecnh c\u1eadp nh\u1eadt, \u0111\u1ebfn quy tr\u00ecnh x\u1eed l\u00fd s\u1ef1 c\u1ed1 khi VPS b\u1ecb t\u1ea5n c\u00f4ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ-%E2%80%93-Cau-hoi-thuong-gap-ve-Bao-mat-VPS\"><\/span>FAQ &#8211; C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 B\u1ea3o m\u1eadt VPS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Bao-mat-VPS-co-lam-cham-hieu-suat-khong\"><\/span>B\u1ea3o m\u1eadt VPS c\u00f3 l\u00e0m ch\u1eadm hi\u1ec7u su\u1ea5t kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Tr\u1ea3 l\u1eddi:<\/strong> Vi\u1ec7c <strong>b\u1ea3o m\u1eadt VPS c\u00f3 \u1ea3nh h\u01b0\u1edfng hi\u1ec7u su\u1ea5t kh\u00f4ng<\/strong> l\u00e0 m\u1ed1i quan t\u00e2m ch\u00ednh \u0111\u00e1ng. Tuy nhi\u00ean, c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n nh\u01b0 <strong>UFW<\/strong> hay <strong>SSH Key<\/strong> c\u00f3 t\u00e1c \u0111\u1ed9ng kh\u00f4ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u su\u1ea5t. Th\u1eadm ch\u00ed, vi\u1ec7c <strong>ch\u1ed1ng t\u1ea5n c\u00f4ng brute force<\/strong> hi\u1ec7u qu\u1ea3 (v\u00ed d\u1ee5: d\u00f9ng Fail2Ban) c\u00f2n gi\u00fap gi\u1ea3i ph\u00f3ng t\u00e0i nguy\u00ean CPU v\u00e0 b\u0103ng th\u00f4ng m\u00e0 l\u1ebd ra \u0111\u00e3 b\u1ecb l\u00e3ng ph\u00ed cho c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y. B\u1ea1n n\u00ean \u01b0u ti\u00ean b\u1ea3o m\u1eadt h\u01a1n l\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 kh\u00f4ng \u0111\u00e1ng k\u1ec3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toi-nen-dung-UFW-hay-IPTables\"><\/span>T\u00f4i n\u00ean d\u00f9ng UFW hay IPTables?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Tr\u1ea3 l\u1eddi:<\/strong><\/p>\n<ul>\n<li>N\u1ebfu b\u1ea1n l\u00e0 <strong>ng\u01b0\u1eddi m\u1edbi<\/strong> ho\u1eb7c qu\u1ea3n l\u00fd m\u1ed9t s\u1ed1 \u00edt VPS v\u1edbi y\u00eau c\u1ea7u b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n (<strong>SMB<\/strong>), h\u00e3y ch\u1ecdn <strong>UFW<\/strong> (Uncomplicated Firewall). <strong>UFW<\/strong> r\u1ea5t d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 qu\u1ea3n l\u00fd b\u1eb1ng c\u00e1c l\u1ec7nh \u0111\u01a1n gi\u1ea3n.<\/li>\n<li>N\u1ebfu b\u1ea1n l\u00e0 <strong>SysAdmin<\/strong> qu\u1ea3n l\u00fd m\u00f4i tr\u01b0\u1eddng ph\u1ee9c t\u1ea1p ho\u1eb7c c\u1ea7n t\u00f9y ch\u1ec9nh chuy\u00ean s\u00e2u c\u00e1c quy t\u1eafc \u0111\u1ecbnh tuy\u1ebfn\/NAT, h\u00e3y ch\u1ecdn <strong>IPTables<\/strong>.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Co-nen-cai-dat-giao-dien-do-hoa-GUI-tren-VPS-khong\"><\/span>C\u00f3 n\u00ean c\u00e0i \u0111\u1eb7t giao di\u1ec7n \u0111\u1ed3 h\u1ecda (GUI) tr\u00ean VPS kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Tr\u1ea3 l\u1eddi:<\/strong> <strong>Kh\u00f4ng n\u00ean<\/strong>. Vi\u1ec7c <strong>c\u00f3 n\u00ean d\u00f9ng GUI tr\u00ean VPS<\/strong> kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch v\u00ec:<\/p>\n<ol>\n<li><strong>T\u1ed1n t\u00e0i nguy\u00ean:<\/strong> <strong>GUI<\/strong> ti\u00eau t\u1ed1n \u0111\u00e1ng k\u1ec3 CPU v\u00e0 RAM, l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a \u1ee9ng d\u1ee5ng ch\u00ednh.<\/li>\n<li><strong>T\u0103ng b\u1ec1 m\u1eb7t t\u1ea5n c\u00f4ng:<\/strong> C\u00e0i \u0111\u1eb7t th\u00eam c\u00e1c g\u00f3i ph\u1ea7n m\u1ec1m, d\u1ecbch v\u1ee5 \u0111\u1ed3 h\u1ecda s\u1ebd t\u1ea1o ra th\u00eam c\u00e1c l\u1ed7 h\u1ed5ng ti\u1ec1m n\u0103ng \u0111\u1ec3 k\u1ebb t\u1ea5n c\u00f4ng khai th\u00e1c.<\/li>\n<\/ol>\n<p><strong>B\u1ea3o m\u1eadt VPS Linux<\/strong> l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh li\u00ean t\u1ee5c, kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c ch\u1ec9 l\u00e0m m\u1ed9t l\u1ea7n. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng <strong>Nguy\u00ean t\u1eafc v\u00e0ng<\/strong>, s\u1eed d\u1ee5ng c\u00e1c <strong>c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng<\/strong> v\u00e0 duy tr\u00ec <strong>Best Practices<\/strong> \u0111\u1ecbnh k\u1ef3, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u \u0111\u00e1ng k\u1ec3 r\u1ee7i ro. H\u00e3y b\u1eaft \u0111\u1ea7u ngay h\u00f4m nay b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp <strong>SSH Key<\/strong> v\u00e0 <strong>T\u01b0\u1eddng l\u1eeda UFW<\/strong> \u0111\u1ec3 x\u00e2y d\u1ef1ng l\u1edbp ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean cho m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>Li\u00ean h\u1ec7 t\u01b0 v\u1ea5n d\u1ecbch v\u1ee5 VPS:<\/strong><\/p>\n<ul>\n<li><strong>Hotline<\/strong>: 1900636822<\/li>\n<li><strong>Fanpage<\/strong>: facebook.com\/interdata.com.vn<\/li>\n<li><strong>Website:<\/strong> interdata.vn<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111ang v\u1eadn h\u00e0nh website, \u1ee9ng d\u1ee5ng, ho\u1eb7c m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n tr\u00ean VPS Linux th\u00ec vi\u1ec7c b\u1ea3o m\u1eadt VPS Linux kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t t\u00f9y ch\u1ecdn m\u00e0 l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 s\u1ed1ng c\u00f2n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. B\u00e0i vi\u1ebft sau s\u1ebd h\u01b0\u1edbng d\u1eabn 7 c\u00e1ch<\/p>\n","protected":false},"author":11,"featured_media":33607,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-20001","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/20001","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=20001"}],"version-history":[{"count":7,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/20001\/revisions"}],"predecessor-version":[{"id":39502,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/20001\/revisions\/39502"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/33607"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=20001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=20001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=20001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}