{"id":34207,"date":"2025-10-09T15:05:14","date_gmt":"2025-10-09T08:05:14","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=34207"},"modified":"2025-10-09T15:07:49","modified_gmt":"2025-10-09T08:07:49","slug":"dos-attack-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/","title":{"rendered":"DoS Attack l\u00e0 g\u00ec? Ph\u00e2n bi\u1ec7t DoS v\u00e0 DDoS, H\u00ecnh th\u1ee9c &#038; c\u00e1ch ph\u00f2ng"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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\/dos-attack-la-gi\/#DoS-attack-la-gi\" >DoS attack 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\/dos-attack-la-gi\/#Phan-biet-DoS-va-DDoS\" >Ph\u00e2n bi\u1ec7t DoS v\u00e0 DDoS<\/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\/dos-attack-la-gi\/#Dong-co-va-muc-tieu-cua-ke-tan-cong-DoS\" >\u0110\u1ed9ng c\u01a1 v\u00e0 m\u1ee5c ti\u00eau c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng DoS<\/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\/dos-attack-la-gi\/#Tong-tien-RansomwareRansom-DDoS\" >T\u1ed1ng ti\u1ec1n (Ransomware\/Ransom DDoS)<\/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\/dos-attack-la-gi\/#Canh-tranh-kinh-doanh\" >C\u1ea1nh tranh kinh doanh<\/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\/dos-attack-la-gi\/#Bao-thu-hoac-Pha-hoai\" >B\u00e1o th\u00f9 ho\u1eb7c Ph\u00e1 ho\u1ea1i<\/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\/dos-attack-la-gi\/#Chien-tranh-mangTham-do\" >Chi\u1ebfn tranh m\u1ea1ng\/Th\u0103m d\u00f2<\/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\/dos-attack-la-gi\/#Co-che-va-phuong-thuc-tan-cong-DoS\" >C\u01a1 ch\u1ebf v\u00e0 ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng DoS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Cac-hinh-thuc-tan-cong-DoS-pho-bien\" >C\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng DoS ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Tan-cong-vao-Tang-Mang-Layer-3-4\" >T\u1ea5n c\u00f4ng v\u00e0o T\u1ea7ng M\u1ea1ng (Layer 3 &amp; 4)<\/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\/dos-attack-la-gi\/#Tan-cong-vao-Tang-Ung-dung-Layer-7\" >T\u1ea5n c\u00f4ng v\u00e0o T\u1ea7ng \u1ee8ng d\u1ee5ng (Layer 7)<\/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\/dos-attack-la-gi\/#Dau-hieu-nhan-biet-he-thong-bi-tan-cong-DoS\" >D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft h\u1ec7 th\u1ed1ng b\u1ecb t\u1ea5n c\u00f4ng DoS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Tac-hai-cua-tan-cong-DoS-la-gi\" >T\u00e1c h\u1ea1i c\u1ee7a t\u1ea5n c\u00f4ng DoS 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-14\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Giai-phap-phong-ngua-va-ung-pho-DoS-attack\" >Gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba v\u00e0 \u1ee9ng ph\u00f3 DoS attack<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Phong-ngua-o-tang-Mang-Network\" >Ph\u00f2ng ng\u1eeba \u1edf t\u1ea7ng M\u1ea1ng (Network)<\/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\/dos-attack-la-gi\/#Su-dung-Dich-vu-Chuyen-biet\" >S\u1eed d\u1ee5ng D\u1ecbch v\u1ee5 Chuy\u00ean bi\u1ec7t<\/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\/dos-attack-la-gi\/#Toi-uu-Server-va-Ung-dung\" >T\u1ed1i \u01b0u Server v\u00e0 \u1ee8ng d\u1ee5ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Loi-khuyen-bao-mat-DoS-attack-nang-cao\" >L\u1eddi khuy\u00ean b\u1ea3o m\u1eadt DoS attack 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-19\" href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/#Thiet-lap-Ke-hoach-Ung-pho-Tham-hoa-DRP-va-Dien-tap\" >Thi\u1ebft l\u1eadp K\u1ebf ho\u1ea1ch \u1ee8ng ph\u00f3 Th\u1ea3m h\u1ecda (DRP) v\u00e0 Di\u1ec5n t\u1eadp<\/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\/dos-attack-la-gi\/#Ap-dung-Zero-Trust-Model\" >\u00c1p d\u1ee5ng Zero Trust Model<\/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\/dos-attack-la-gi\/#Da-dang-hoa-ha-tang\" >\u0110a d\u1ea1ng h\u00f3a h\u1ea1 t\u1ea7ng<\/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\/dos-attack-la-gi\/#Giam-sat-Chu-dong-va-Phan-tich-Hanh-vi\" >Gi\u00e1m s\u00e1t Ch\u1ee7 \u0111\u1ed9ng v\u00e0 Ph\u00e2n t\u00edch H\u00e0nh vi<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>DoS attack l\u00e0 h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1eb7c ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch l\u00e0m qu\u00e1 t\u1ea3i t\u00e0i nguy\u00ean. B\u00e0i vi\u1ebft s\u1ebd gi\u00fap b\u1ea1n t\u00ecm hi\u1ec3u <a href=\"https:\/\/interdata.vn\/blog\/dos-attack-la-gi\/\"><strong>DoS attack l\u00e0 g\u00ec<\/strong><\/a>, ph\u00e2n bi\u1ec7t r\u00f5 DoS v\u00e0 DDoS, hi\u1ec3u c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng, c\u00e1c ki\u1ec3u t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn nh\u01b0 SYN Flood, HTTP Flood, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p h\u01b0\u1edbng d\u1eabn ph\u00f2ng ng\u1eeba, x\u1eed l\u00fd v\u00e0 gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt hi\u1ec7u qu\u1ea3 gi\u00fap doanh nghi\u1ec7p tr\u00e1nh thi\u1ec7t h\u1ea1i n\u1eb7ng n\u1ec1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DoS-attack-la-gi\"><\/span>DoS attack l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>T\u1ea5n c\u00f4ng DoS (Denial of Service)<\/strong> l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1eb7c ng\u0103n ch\u1eb7n ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7 truy c\u1eadp v\u00e0o m\u1ed9t d\u1ecbch v\u1ee5, h\u1ec7 th\u1ed1ng ho\u1eb7c t\u00e0i nguy\u00ean tr\u00ean m\u00e1y ch\u1ee7 b\u1eb1ng c\u00e1ch l\u00e0m qu\u00e1 t\u1ea3i t\u00e0i nguy\u00ean c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u00f3 th\u00f4ng qua vi\u1ec7c g\u1eedi l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u ho\u1eb7c d\u1eef li\u1ec7u b\u1ea5t th\u01b0\u1eddng.<\/p>\n<figure id=\"attachment_34213\" aria-describedby=\"caption-attachment-34213\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34213\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/DoS-attack-la-gi.jpg\" alt=\"DoS attack l\u00e0 g\u00ec\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/DoS-attack-la-gi.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/DoS-attack-la-gi-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/DoS-attack-la-gi-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-34213\" class=\"wp-caption-text\">DoS attack l\u00e0 g\u00ec<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Phan-biet-DoS-va-DDoS\"><\/span>Ph\u00e2n bi\u1ec7t DoS v\u00e0 DDoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong qu\u00e1 tr\u00ecnh t\u00ecm hi\u1ec3u v\u1ec1 <strong>DoS attack l\u00e0 g\u00ec<\/strong>, nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng nh\u1ea7m l\u1eabn ho\u1eb7c kh\u00f4ng th\u1ec3 <strong>ph\u00e2n bi\u1ec7t DoS v\u00e0 DDoS<\/strong> m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng. \u0110\u00e2y l\u00e0 m\u1ed9t <strong>Pain Point<\/strong> ph\u1ed5 bi\u1ebfn m\u00e0 ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i quy\u1ebft chi ti\u1ebft. C\u1ea3 hai \u0111\u1ec1u nh\u1eb1m m\u1ee5c \u0111\u00edch t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5, nh\u01b0ng kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf <strong>ngu\u1ed3n g\u1ed1c<\/strong> c\u1ee7a l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng.<\/p>\n<p><strong>DDoS<\/strong> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <em>Distributed Denial of Service<\/em> (T\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n). \u0110\u00e2y l\u00e0 m\u1ed9t phi\u00ean b\u1ea3n m\u1edf r\u1ed9ng v\u00e0 nguy hi\u1ec3m h\u01a1n nhi\u1ec1u so v\u1edbi <strong>DoS attack<\/strong> truy\u1ec1n th\u1ed1ng.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; border: 2px solid #050a71;\">\n<thead>\n<tr>\n<th style=\"background-color: #050a71; color: white; padding: 12px 15px; text-align: left; border: 1px solid #050a71; width: 25%;\">\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th style=\"background-color: #050a71; color: white; padding: 12px 15px; text-align: left; border: 1px solid #050a71; width: 37.5%;\">DoS (Denial of Service)<\/th>\n<th style=\"background-color: #050a71; color: white; padding: 12px 15px; text-align: left; border: 1px solid #050a71; width: 37.5%;\">DDoS (Distributed Denial of Service)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Ngu\u1ed3n g\u1ed1c t\u1ea5n c\u00f4ng<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Ch\u1ec9 \u0111\u1ebfn t\u1eeb m\u1ed9t h\u1ec7 th\u1ed1ng duy nh\u1ea5t (m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a>).<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">\u0110\u1ebfn t\u1eeb nhi\u1ec1u h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi (nhi\u1ec1u \u0111\u1ecba ch\u1ec9 IP).<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Quy m\u00f4 v\u00e0 S\u1ee9c m\u1ea1nh<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Nh\u1ecf, d\u1ec5 b\u1ecb ch\u1eb7n b\u1eb1ng c\u00e1ch \u0111\u01a1n gi\u1ea3n l\u00e0 ch\u1eb7n \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n.<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">L\u1edbn, m\u1ea1nh m\u1ebd, kh\u00f3 ng\u0103n ch\u1eb7n v\u00ec Traffic t\u1ea5n c\u00f4ng \u0111\u1ebfn t\u1eeb nhi\u1ec1u n\u01a1i.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">C\u00f4ng c\u1ee5 s\u1eed d\u1ee5ng<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Th\u01b0\u1eddng l\u00e0 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u01a1n gi\u1ea3n, script c\u01a1 b\u1ea3n.<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">S\u1eed d\u1ee5ng <a href=\"https:\/\/interdata.vn\/blog\/botnet-la-gi\/\">Botnet<\/a> (m\u1ed9t m\u1ea1ng l\u01b0\u1edbi c\u00e1c m\u00e1y t\u00ednh b\u1ecb nhi\u1ec5m \u0111\u1ed9c v\u00e0 \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa).<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">T\u00ednh ph\u1ee9c t\u1ea1p<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Th\u1ea5p.<\/td>\n<td style=\"padding: 10px 15px; border: 1px solid #e0e0e0; vertical-align: top;\">Cao.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>M\u1ed9t cu\u1ed9c <strong>DoS attack<\/strong> r\u1ea5t d\u1ec5 b\u1ecb c\u00e1c h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt hi\u1ec7n \u0111\u1ea1i ph\u00e1t hi\u1ec7n v\u00e0 c\u00f4 l\u1eadp. Ng\u01b0\u1ee3c l\u1ea1i, <strong>DDoS attack<\/strong> s\u1eed d\u1ee5ng m\u1ea1ng l\u01b0\u1edbi <strong>Botnet<\/strong> kh\u1ed5ng l\u1ed3 (c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn h\u00e0ng tr\u0103m ng\u00e0n m\u00e1y t\u00ednh b\u1ecb ki\u1ec3m so\u00e1t) \u0111\u1ec3 t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng <strong>Traffic t\u0103ng \u0111\u1ed9t bi\u1ebfn<\/strong> g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c \u0111\u00e2u l\u00e0 ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7, \u0111\u00e2u l\u00e0 t\u1ea5n c\u00f4ng. Ch\u00ednh t\u00ednh <strong>ph\u00e2n t\u00e1n<\/strong> n\u00e0y l\u00e0m cho <strong>DDoS <\/strong>tr\u1edf th\u00e0nh m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt nghi\u00eam tr\u1ecdng nh\u1ea5t hi\u1ec7n nay.<\/p>\n<p><strong>InterData<\/strong> lu\u00f4n nh\u1ea5n m\u1ea1nh: khi \u0111\u1ed1i ph\u00f3 v\u1edbi <strong>t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/strong>, vi\u1ec7c ph\u00e2n lo\u1ea1i v\u00e0 x\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dong-co-va-muc-tieu-cua-ke-tan-cong-DoS\"><\/span>\u0110\u1ed9ng c\u01a1 v\u00e0 m\u1ee5c ti\u00eau c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng DoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c <strong>\u0111\u1ed9ng c\u01a1 t\u1ea5n c\u00f4ng m\u1ea1ng<\/strong> gi\u00fap c\u00e1c doanh nghi\u1ec7p chu\u1ea9n b\u1ecb t\u00e2m l\u00fd v\u00e0 ph\u00f2ng th\u1ee7 theo t\u1eebng k\u1ecbch b\u1ea3n r\u1ee7i ro. K\u1ebb t\u1ea5n c\u00f4ng th\u1ef1c hi\u1ec7n <strong>DoS attack<\/strong> v\u00e0 <strong>DDoS attack<\/strong> kh\u00f4ng ch\u1ec9 v\u00ec ni\u1ec1m vui c\u00e1 nh\u00e2n; c\u00e1c h\u00e0nh \u0111\u1ed9ng n\u00e0y th\u01b0\u1eddng xu\u1ea5t ph\u00e1t t\u1eeb nh\u1eefng m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 v\u00e0 \u0111\u00f4i khi l\u00e0 mang t\u00ednh t\u1ed5 ch\u1ee9c cao.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tong-tien-RansomwareRansom-DDoS\"><\/span><strong>T\u1ed1ng ti\u1ec1n (Ransomware\/Ransom DDoS)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 \u0111\u1ed9ng c\u01a1 th\u01b0\u01a1ng m\u1ea1i ph\u1ed5 bi\u1ebfn. K\u1ebb t\u1ea5n c\u00f4ng s\u1ebd \u0111e d\u1ecda th\u1ef1c hi\u1ec7n ho\u1eb7c \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t cu\u1ed9c <strong>DDoS attack<\/strong> l\u00ean h\u1ec7 th\u1ed1ng, y\u00eau c\u1ea7u n\u1ea1n nh\u00e2n tr\u1ea3 m\u1ed9t kho\u1ea3n ti\u1ec1n chu\u1ed9c (th\u01b0\u1eddng l\u00e0 Bitcoin) \u0111\u1ec3 ng\u1eebng t\u1ea5n c\u00f4ng. N\u1ebfu n\u1ea1n nh\u00e2n t\u1eeb ch\u1ed1i, cu\u1ed9c t\u1ea5n c\u00f4ng s\u1ebd ti\u1ebfp t\u1ee5c cho \u0111\u1ebfn khi d\u1ecbch v\u1ee5 s\u1eadp ho\u00e0n to\u00e0n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Canh-tranh-kinh-doanh\"><\/span><strong>C\u1ea1nh tranh kinh doanh<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c \u0111\u1ed1i th\u1ee7 c\u1ea1nh tranh kh\u00f4ng l\u00e0nh m\u1ea1nh c\u00f3 th\u1ec3 thu\u00ea d\u1ecbch v\u1ee5 <strong>DDoS attack<\/strong> \u0111\u1ec3 l\u00e0m t\u00ea li\u1ec7t d\u1ecbch v\u1ee5 c\u1ee7a \u0111\u1ed1i th\u1ee7, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c s\u1ef1 ki\u1ec7n quan tr\u1ecdng nh\u01b0 ra m\u1eaft s\u1ea3n ph\u1ea9m, m\u00f9a mua s\u1eafm cao \u0111i\u1ec3m (Black Friday) ho\u1eb7c c\u00e1c chi\u1ebfn d\u1ecbch qu\u1ea3ng c\u00e1o l\u1edbn. M\u1ea5t kh\u1ea3 d\u1ee5ng d\u1ecbch v\u1ee5 v\u00e0o th\u1eddi \u0111i\u1ec3m n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c m\u1ea5t \u0111i l\u1ee3i th\u1ebf th\u1ecb tr\u01b0\u1eddng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bao-thu-hoac-Pha-hoai\"><\/span><strong>B\u00e1o th\u00f9 ho\u1eb7c Ph\u00e1 ho\u1ea1i<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 c\u00e1c h\u00e0nh vi xu\u1ea5t ph\u00e1t t\u1eeb s\u1ef1 b\u1ea5t m\u00e3n c\u00e1 nh\u00e2n (nh\u00e2n vi\u00ean c\u0169, kh\u00e1ch h\u00e0ng t\u1ee9c gi\u1eadn) ho\u1eb7c c\u00e1c nh\u00f3m <em>Hacktivism<\/em> (hack v\u00ec l\u00fd do ch\u00ednh tr\u1ecb, x\u00e3 h\u1ed9i). <strong>M\u1ee5c \u0111\u00edch t\u1ea5n c\u00f4ng DoS<\/strong> c\u1ee7a nh\u00f3m n\u00e0y th\u01b0\u1eddng ch\u1ec9 l\u00e0 l\u00e0m gi\u00e1n \u0111o\u1ea1n ti\u1ebfng n\u00f3i c\u1ee7a t\u1ed5 ch\u1ee9c m\u1ee5c ti\u00eau.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chien-tranh-mangTham-do\"><\/span><strong>Chi\u1ebfn tranh m\u1ea1ng\/Th\u0103m d\u00f2<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00f4i khi, <strong>DoS attack<\/strong> ch\u1ec9 l\u00e0 m\u1ed9t chi\u1ebfn thu\u1eadt nghi binh \u0111\u1ec3 \u0111\u00e1nh l\u1ea1c h\u01b0\u1edbng \u0111\u1ed9i ng\u0169 an ninh m\u1ea1ng, trong khi \u0111\u00f3, cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00ednh nh\u1eb1m v\u00e0o vi\u1ec7c th\u00e2m nh\u1eadp v\u00e0 \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u \u0111ang di\u1ec5n ra \u1edf m\u1ed9t c\u1eeda kh\u00e1c.<\/p>\n<p>M\u1ee5c ti\u00eau c\u1ee7a <strong>DoS attack<\/strong> th\u01b0\u1eddng l\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh c\u00f4ng c\u1ed9ng cao v\u00e0 \u0111\u00f2i h\u1ecfi t\u00ednh kh\u1ea3 d\u1ee5ng tuy\u1ec7t \u0111\u1ed1i: <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a> th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, c\u1ed5ng thanh to\u00e1n tr\u1ef1c tuy\u1ebfn, game server (v\u00ec ng\u01b0\u1eddi ch\u01a1i d\u1ec5 ph\u1ea3n \u1ee9ng m\u1ea1nh), v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng d\u1ecbch v\u1ee5 c\u00f4ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Co-che-va-phuong-thuc-tan-cong-DoS\"><\/span>C\u01a1 ch\u1ebf v\u00e0 ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng DoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 ch\u1ed1ng l\u1ea1i <strong>DoS attack<\/strong>, \u0111i\u1ec1u c\u1ed1t y\u1ebfu l\u00e0 hi\u1ec3u r\u00f5 <strong>c\u01a1 ch\u1ebf t\u1ea5n c\u00f4ng DoS\/DDoS<\/strong>. V\u1ec1 c\u01a1 b\u1ea3n, ch\u00fang ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch g\u1eedi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u ho\u1eb7c d\u1eef li\u1ec7u \u0111\u1ed9c h\u1ea1i \u0111\u1ebfn m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau, khi\u1ebfn m\u00e1y ch\u1ee7 kh\u00f4ng th\u1ec3 x\u1eed l\u00fd k\u1ecbp th\u1eddi v\u00e0 r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5.<\/p>\n<p>C\u01a1 ch\u1ebf n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c <strong>ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean<\/strong> c\u1ee7a m\u1ee5c ti\u00eau:<\/p>\n<ul>\n<li><strong>Ti\u00eau th\u1ee5 Bandwidth (<a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">B\u0103ng th\u00f4ng<\/a>):<\/strong> K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi c\u00e1c g\u00f3i <a href=\"https:\/\/interdata.vn\/blog\/big-data-la-gi\/\">d\u1eef li\u1ec7u l\u1edbn<\/a> ho\u1eb7c li\u00ean t\u1ee5c, l\u1ea5p \u0111\u1ea7y to\u00e0n b\u1ed9 dung l\u01b0\u1ee3ng <strong>b\u0103ng th\u00f4ng<\/strong> m\u00e0 m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 x\u1eed l\u00fd. K\u1ebft qu\u1ea3 l\u00e0, l\u01b0u l\u01b0\u1ee3ng h\u1ee3p l\u1ec7 kh\u00f4ng c\u00f2n \u0111\u01b0\u1eddng \u0111\u1ec3 \u0111i qua.<\/li>\n<li><strong>Ti\u00eau th\u1ee5 <a href=\"https:\/\/interdata.vn\/blog\/cpu-server\/\">CPU<\/a> v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/ram-server\/\">RAM<\/a>:<\/strong> C\u00e1c ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng tinh vi h\u01a1n s\u1ebd g\u1eedi c\u00e1c y\u00eau c\u1ea7u c\u1ea7n <strong>m\u00e1y ch\u1ee7 ph\u1ea3i x\u1eed l\u00fd n\u1eb7ng<\/strong> (v\u00ed d\u1ee5: y\u00eau c\u1ea7u t\u00ednh to\u00e1n ph\u1ee9c t\u1ea1p, thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i t\u1ed1n t\u00e0i nguy\u00ean). Vi\u1ec7c n\u00e0y l\u00e0m <strong>qu\u00e1 t\u1ea3i CPU<\/strong> v\u00e0 c\u1ea1n ki\u1ec7t b\u1ed9 nh\u1edb <strong>RAM<\/strong> c\u1ee7a <strong>server<\/strong>, d\u1eabn \u0111\u1ebfn crash (s\u1eadp).<\/li>\n<li><strong>Ti\u00eau th\u1ee5 K\u1ebft n\u1ed1i (Connection States):<\/strong> K\u1ebb t\u1ea5n c\u00f4ng t\u1ea1o ra h\u00e0ng ng\u00e0n k\u1ebft n\u1ed1i kh\u00f4ng ho\u00e0n ch\u1ec9nh, gi\u1eef cho c\u00e1c c\u1ed5ng m\u1ea1ng lu\u00f4n \u1edf tr\u1ea1ng th\u00e1i ch\u1edd. \u0110i\u1ec1u n\u00e0y l\u00e0m c\u1ea1n ki\u1ec7t b\u1ea3ng k\u1ebft n\u1ed1i (Connection Table) c\u1ee7a h\u1ec7 th\u1ed1ng, khi\u1ebfn m\u00e1y ch\u1ee7 kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn th\u00eam k\u1ebft n\u1ed1i h\u1ee3p l\u1ec7 n\u00e0o kh\u00e1c.<\/li>\n<\/ul>\n<p>M\u1ed9t trong nh\u1eefng v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh nh\u1ea5t v\u1ec1 vi\u1ec7c l\u1ea1m d\u1ee5ng t\u00e0i nguy\u00ean l\u00e0 <strong>SYN Flood attack<\/strong>, n\u01a1i k\u1ebb t\u1ea5n c\u00f4ng g\u1eedi \u0111i h\u00e0ng lo\u1ea1t g\u00f3i SYN (y\u00eau c\u1ea7u k\u1ebft n\u1ed1i TCP) nh\u01b0ng kh\u00f4ng bao gi\u1edd ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh b\u1eaft tay ba b\u01b0\u1edbc (Three-way Handshake). H\u00e0ng ng\u00e0n k\u1ebft n\u1ed1i n\u1eeda v\u1eddi n\u00e0y s\u1ebd gi\u1eef c\u00e1c t\u00e0i nguy\u00ean c\u1ee7a <strong>server<\/strong>, g\u00e2y ra <strong>t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/strong>.<\/p>\n<figure id=\"attachment_34214\" aria-describedby=\"caption-attachment-34214\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34214\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Co-che-va-phuong-thuc-tan-cong-DoS.jpg\" alt=\"C\u01a1 ch\u1ebf v\u00e0 ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng DoS\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Co-che-va-phuong-thuc-tan-cong-DoS.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Co-che-va-phuong-thuc-tan-cong-DoS-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Co-che-va-phuong-thuc-tan-cong-DoS-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-34214\" class=\"wp-caption-text\">C\u01a1 ch\u1ebf v\u00e0 ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng DoS<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cac-hinh-thuc-tan-cong-DoS-pho-bien\"><\/span>C\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng DoS ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00e1c lo\u1ea1i h\u00ecnh t\u1ea5n c\u00f4ng <strong>DoS attack<\/strong> r\u1ea5t \u0111a d\u1ea1ng v\u00e0 kh\u00f4ng ng\u1eebng ph\u00e1t tri\u1ec3n, t\u1eeb c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3 \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u1ee9ng d\u1ee5ng c\u1ef1c k\u1ef3 tinh vi.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan-cong-vao-Tang-Mang-Layer-3-4\"><\/span>T\u1ea5n c\u00f4ng v\u00e0o T\u1ea7ng M\u1ea1ng (Layer 3 &amp; 4)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 nh\u1eefng h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng th\u00f4 b\u1ea1o, d\u1ef1a tr\u00ean vi\u1ec7c l\u1ea1m d\u1ee5ng c\u00e1c giao th\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a <a href=\"https:\/\/interdata.vn\/blog\/mang-internet\/\">m\u1ea1ng Internet<\/a> (TCP\/IP).<\/p>\n<h4><strong>SYN Flood<\/strong><\/h4>\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i h\u00ecnh kinh \u0111i\u1ec3n v\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t, nh\u1eb1m v\u00e0o l\u1edbp giao v\u1eadn (Layer 4). K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn g\u00f3i <strong>SYN<\/strong> (y\u00eau c\u1ea7u k\u1ebft n\u1ed1i TCP) nh\u01b0ng kh\u00f4ng g\u1eedi g\u00f3i ACK cu\u1ed1i c\u00f9ng.<\/p>\n<p><strong>Server<\/strong> ph\u1ea3i duy tr\u00ec tr\u1ea1ng th\u00e1i ch\u1edd (SYN_RECEIVED) cho h\u00e0ng ng\u00e0n k\u1ebft n\u1ed1i kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh, l\u00e0m c\u1ea1n ki\u1ec7t b\u1ed9 nh\u1edb v\u00e0 b\u1ea3ng k\u1ebft n\u1ed1i. \u0110\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch th\u1ee9c <strong>DoS attack<\/strong> khai th\u00e1c l\u1ed7 h\u1ed5ng giao th\u1ee9c.<\/p>\n<h4><strong>UDP Flood<\/strong><\/h4>\n<p>T\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng giao th\u1ee9c UDP (User Datagram Protocol) b\u1eb1ng c\u00e1ch g\u1eedi l\u01b0\u1ee3ng l\u1edbn g\u00f3i tin UDP \u0111\u1ebfn c\u00e1c c\u1ed5ng ng\u1eabu nhi\u00ean tr\u00ean m\u00e1y ch\u1ee7. M\u00e1y ch\u1ee7 sau \u0111\u00f3 ph\u1ea3i x\u1eed l\u00fd b\u1eb1ng c\u00e1ch g\u1eedi l\u1ea1i g\u00f3i ICMP &#8216;Destination Unreachable&#8217;, khi\u1ebfn t\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 v\u00e0 b\u0103ng th\u00f4ng \u0111i\/\u0111\u1ebfn \u0111\u1ec1u b\u1ecb t\u1eafc ngh\u1ebdn.<\/p>\n<h4><strong>ICMP Flood (Smurf Attack)<\/strong><\/h4>\n<p>S\u1eed d\u1ee5ng giao th\u1ee9c ICMP (Internet Control Message Protocol), hay c\u00f2n g\u1ecdi l\u00e0 Ping. K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi c\u00e1c g\u00f3i tin Ping l\u1edbn v\u00e0 li\u00ean t\u1ee5c. Trong bi\u1ebfn th\u1ec3 Smurf, k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng IP gi\u1ea3 m\u1ea1o (Spoofed IP) c\u1ee7a n\u1ea1n nh\u00e2n v\u00e0 g\u1eedi y\u00eau c\u1ea7u Ping \u0111\u1ebfn m\u1ed9t m\u1ea1ng l\u01b0\u1edbi l\u1edbn, khi\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c m\u00e1y t\u00ednh trong m\u1ea1ng l\u01b0\u1edbi \u0111\u00f3 \u0111\u1ed3ng lo\u1ea1t ph\u1ea3n h\u1ed3i Ping v\u1ec1 n\u1ea1n nh\u00e2n, t\u1ea1o ra m\u1ed9t <strong>Traffic t\u0103ng \u0111\u1ed9t bi\u1ebfn<\/strong> kh\u1ed5ng l\u1ed3.<\/p>\n<h4><strong>T\u1ea5n c\u00f4ng khu\u1ebfch \u0111\u1ea1i (Amplification Attacks)<\/strong><\/h4>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t chi\u1ebfn thu\u1eadt tinh vi, v\u00ed d\u1ee5 nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/dns-la-gi\/\">DNS<\/a> Amplification ho\u1eb7c NTP Amplification. K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t y\u00eau c\u1ea7u nh\u1ecf \u0111\u1ebfn d\u1ecbch v\u1ee5 c\u00f4ng c\u1ed9ng (DNS Server) v\u1edbi \u0111\u1ecba ch\u1ec9 IP gi\u1ea3 m\u1ea1o c\u1ee7a n\u1ea1n nh\u00e2n. D\u1ecbch v\u1ee5 n\u00e0y sau \u0111\u00f3 ph\u1ea3n h\u1ed3i l\u1ea1i m\u1ed9t l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn g\u1ea5p nhi\u1ec1u l\u1ea7n v\u1ec1 ph\u00eda n\u1ea1n nh\u00e2n, khu\u1ebfch \u0111\u1ea1i s\u1ee9c m\u1ea1nh c\u1ee7a cu\u1ed9c <strong>DoS attack<\/strong> l\u00ean h\u00e0ng ch\u1ee5c l\u1ea7n.<\/p>\n<p>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>DoS attack<\/strong> \u1edf Layer 3 v\u00e0 4 th\u01b0\u1eddng d\u1ec5 ph\u00e1t hi\u1ec7n h\u01a1n v\u00ec ch\u00fang t\u1ea1o ra l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn b\u1ea5t th\u01b0\u1eddng, d\u1ec5 d\u00e0ng b\u1ecb c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng c\u1ea5p cao nh\u01b0 Router v\u00e0 Firewall ph\u00e1t hi\u1ec7n v\u00e0 ch\u1eb7n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan-cong-vao-Tang-Ung-dung-Layer-7\"><\/span>T\u1ea5n c\u00f4ng v\u00e0o T\u1ea7ng \u1ee8ng d\u1ee5ng (Layer 7)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 c\u00e1c h\u00ecnh th\u1ee9c <strong>DDoS attack<\/strong> hi\u1ec7n \u0111\u1ea1i v\u00e0 nguy hi\u1ec3m nh\u1ea5t v\u00ec ch\u00fang ti\u00eau t\u1ed1n \u00edt <strong>Bandwidth<\/strong> h\u01a1n, nh\u01b0ng l\u1ea1i y\u00eau c\u1ea7u m\u00e1y ch\u1ee7 ph\u1ea3i th\u1ef1c hi\u1ec7n nhi\u1ec1u c\u00f4ng vi\u1ec7c x\u1eed l\u00fd logic nh\u1ea5t, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean kh\u00f3 ph\u00e1t hi\u1ec7n. <strong>Layer 7 DDoS attack<\/strong> ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng \u1ee9ng d\u1ee5ng (Application Layer), n\u01a1i c\u00e1c d\u1ecbch v\u1ee5 web nh\u01b0 HTTP, <a href=\"https:\/\/interdata.vn\/blog\/giao-thuc-https-la-gi\/\">HTTPS<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n<h4><strong>HTTP Flood<\/strong><\/h4>\n<p>K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c y\u00eau c\u1ea7u HTTP GET ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/post-la-gi\/\">POST<\/a> h\u1ee3p l\u1ec7. C\u00e1c y\u00eau c\u1ea7u n\u00e0y r\u1ea5t gi\u1ed1ng v\u1edbi h\u00e0nh vi ng\u01b0\u1eddi d\u00f9ng b\u00ecnh th\u01b0\u1eddng (nh\u01b0 t\u1ea3i trang, g\u1eedi form, \u0111\u0103ng nh\u1eadp), khi\u1ebfn h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt kh\u00f3 kh\u0103n trong vi\u1ec7c ph\u00e2n bi\u1ec7t.<\/p>\n<p>M\u1ed7i y\u00eau c\u1ea7u <strong>HTTP Flood<\/strong> bu\u1ed9c <strong>server<\/strong> ph\u1ea3i th\u1ef1c hi\u1ec7n to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh x\u1eed l\u00fd: ch\u1ea1y script, <a href=\"https:\/\/interdata.vn\/blog\/query-la-gi\/\">truy v\u1ea5n<\/a> c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ea3i t\u00e0i nguy\u00ean. Vi\u1ec7c n\u00e0y nhanh ch\u00f3ng l\u00e0m <strong>qu\u00e1 t\u1ea3i CPU<\/strong> v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 backend, d\u1eabn \u0111\u1ebfn <strong>t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/strong>. \u0110\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 ho\u00e0n h\u1ea3o cho vi\u1ec7c k\u1ebb x\u1ea5u \u0111ang l\u00e0m g\u00ec v\u1edbi <strong>DoS attack<\/strong> trong th\u1eddi \u0111\u1ea1i hi\u1ec7n nay.<\/p>\n<h4><strong>Slowloris<\/strong><\/h4>\n<p>M\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng Layer 7 c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3, nh\u1eb1m m\u1ee5c \u0111\u00edch gi\u1eef c\u00e1c k\u1ebft n\u1ed1i TCP c\u00e0ng l\u00e2u c\u00e0ng t\u1ed1t trong khi ti\u00eau t\u1ed1n t\u1ed1i thi\u1ec3u t\u00e0i nguy\u00ean c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng. N\u00f3 g\u1eedi c\u00e1c y\u00eau c\u1ea7u HTTP kh\u00f4ng ho\u00e0n ch\u1ec9nh (v\u00ed d\u1ee5: ch\u1ec9 g\u1eedi <a href=\"https:\/\/interdata.vn\/blog\/header-la-gi\/\">header<\/a> m\u00e0 kh\u00f4ng g\u1eedi h\u1ebft body) v\u00e0 sau \u0111\u00f3 g\u1eedi c\u00e1c header ti\u1ebfp theo r\u1ea5t ch\u1eadm.<\/p>\n<p><strong>Server<\/strong> ph\u1ea3i gi\u1eef m\u1edf c\u00e1c k\u1ebft n\u1ed1i n\u00e0y, l\u00e0m c\u1ea1n ki\u1ec7t b\u1ea3ng k\u1ebft n\u1ed1i v\u00e0 ng\u0103n ch\u1eb7n ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7 k\u1ebft n\u1ed1i. Slowloris cho th\u1ea5y m\u1ed9t cu\u1ed9c <strong>DoS attack<\/strong> kh\u00f4ng c\u1ea7n ph\u1ea3i c\u00f3 quy m\u00f4 kh\u1ed5ng l\u1ed3 \u0111\u1ec3 th\u00e0nh c\u00f4ng.<\/p>\n<h4><strong>L\u1ea1m d\u1ee5ng API\/Logic<\/strong><\/h4>\n<p>T\u1ea5n c\u00f4ng v\u00e0o c\u00e1c API ho\u1eb7c ch\u1ee9c n\u0103ng \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 c\u00f3 y\u00eau c\u1ea7u t\u00ednh to\u00e1n ph\u1ee9c t\u1ea1p nh\u1ea5t, v\u00ed d\u1ee5: t\u00ecm ki\u1ebfm n\u00e2ng cao, t\u1ea1o b\u00e1o c\u00e1o theo th\u1eddi gian th\u1ef1c. K\u1ebb t\u1ea5n c\u00f4ng ch\u1ec9 c\u1ea7n m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u v\u1eeba ph\u1ea3i nh\u01b0ng l\u1ea1i <strong>bu\u1ed9c server ph\u1ea3i l\u00e0m vi\u1ec7c qu\u00e1 s\u1ee9c<\/strong> (CPU\/RAM c\u1ea1n ki\u1ec7t), d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng <strong>t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/strong>.<\/p>\n<p>Trong c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>DDoS attack<\/strong> ph\u1ee9c t\u1ea1p, k\u1ebb t\u1ea5n c\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p c\u1ea3 Layer 3\/4 v\u00e0 Layer 7 \u0111\u1ec3 t\u1ea1o ra m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng \u0111a t\u1ea7ng, khi\u1ebfn \u0111\u1ed9i ng\u0169 b\u1ea3o m\u1eadt ph\u1ea3i ph\u00e2n t\u00e1n l\u1ef1c l\u01b0\u1ee3ng v\u00e0 kh\u00f3 kh\u0103n h\u01a1n trong vi\u1ec7c \u1ee9ng ph\u00f3.<\/p>\n<figure id=\"attachment_34215\" aria-describedby=\"caption-attachment-34215\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34215\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Cac-hinh-thuc-tan-cong-pho-bien.jpg\" alt=\"C\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Cac-hinh-thuc-tan-cong-pho-bien.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Cac-hinh-thuc-tan-cong-pho-bien-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Cac-hinh-thuc-tan-cong-pho-bien-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-34215\" class=\"wp-caption-text\">C\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Dau-hieu-nhan-biet-he-thong-bi-tan-cong-DoS\"><\/span>D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft h\u1ec7 th\u1ed1ng b\u1ecb t\u1ea5n c\u00f4ng DoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nh\u1eadn bi\u1ebft s\u1edbm m\u1ed9t cu\u1ed9c <strong>DoS attack<\/strong> l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 gi\u1ea3m thi\u1ec3u thi\u1ec7t h\u1ea1i. C\u00e1c k\u1ef9 thu\u1eadt vi\u00ean v\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng c\u1ea7n theo d\u00f5i c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng m\u1ed9t c\u00e1ch th\u01b0\u1eddng xuy\u00ean.<\/p>\n<p><strong>InterData<\/strong> \u0111\u00e3 t\u1ed5ng h\u1ee3p c\u00e1c <strong>d\u1ea5u hi\u1ec7u b\u1ecb DDoS attack<\/strong> ph\u1ed5 bi\u1ebfn sau:<\/p>\n<ol>\n<li><strong>Hi\u1ec7u su\u1ea5t m\u1ea1ng suy gi\u1ea3m nghi\u00eam tr\u1ecdng:<\/strong> \u0110\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u r\u00f5 r\u00e0ng nh\u1ea5t. Website, \u1ee9ng d\u1ee5ng ho\u1eb7c d\u1ecbch v\u1ee5 b\u1ed7ng d\u01b0ng <strong>server b\u1ecb ch\u1eadm<\/strong> \u0111\u1ed9t ng\u1ed9t ho\u1eb7c ho\u00e0n to\u00e0n kh\u00f4ng ph\u1ea3n h\u1ed3i. C\u00e1c y\u00eau c\u1ea7u (Requests) b\u1ecb Time-out.<\/li>\n<li><strong>L\u01b0u l\u01b0\u1ee3ng Truy c\u1eadp (Traffic) t\u0103ng \u0111\u1ed9t bi\u1ebfn b\u1ea5t th\u01b0\u1eddng:<\/strong> Ki\u1ec3m tra Log v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t (nh\u01b0 Google Analytics, Search Console, hay c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t m\u1ea1ng) v\u00e0 b\u1ea1n s\u1ebd th\u1ea5y l\u01b0\u1ee3ng <strong>Traffic t\u0103ng \u0111\u1ed9t bi\u1ebfn<\/strong> v\u1ec1 m\u1ed9t c\u1ed5ng, giao th\u1ee9c, ho\u1eb7c \u0111\u1ecba ch\u1ec9 IP c\u1ee5 th\u1ec3. Th\u01b0\u1eddng l\u00e0 s\u1ef1 t\u0103ng v\u1ecdt v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng g\u00f3i tin (Packet per second) ho\u1eb7c s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i TCP\/UDP.<\/li>\n<li><strong>T\u00e0i nguy\u00ean Server b\u1ecb qu\u00e1 t\u1ea3i:<\/strong> CPU v\u00e0 RAM tr\u00ean <strong>server<\/strong> \u0111\u1ea1t ng\u01b0\u1ee1ng 90-100% trong th\u1eddi gian d\u00e0i. C\u00e1c ti\u1ebfn tr\u00ecnh h\u1ec7 th\u1ed1ng b\u1ecb t\u1eafc ngh\u1ebdn.<\/li>\n<li><strong>S\u1ef1 gia t\u0103ng k\u1ebft n\u1ed1i t\u1eeb m\u1ed9t ngu\u1ed3n ho\u1eb7c m\u1ed9t d\u1ea3i IP:<\/strong> \u0110\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a <strong>DoS attack<\/strong> (m\u1ed9t ngu\u1ed3n) ho\u1eb7c <strong>DDoS attack<\/strong> (nhi\u1ec1u ngu\u1ed3n, th\u01b0\u1eddng l\u00e0 c\u00e1c d\u1ea3i IP kh\u00f4ng ph\u1ea3i \u0111\u1ecba ch\u1ec9 ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng).<\/li>\n<li><strong>Th\u00f4ng b\u00e1o l\u1ed7i t\u1eeb ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7:<\/strong> Ng\u01b0\u1eddi d\u00f9ng b\u00e1o c\u00e1o kh\u00f4ng th\u1ec3 truy c\u1eadp d\u1ecbch v\u1ee5, nh\u1eadn th\u00f4ng b\u00e1o <a href=\"https:\/\/interdata.vn\/blog\/loi-503-service-unavailable-la-gi\/\">l\u1ed7i 503 Service Unavailable<\/a> ho\u1eb7c c\u00e1c l\u1ed7i Time-out kh\u00e1c.<\/li>\n<\/ol>\n<p>Ph\u00e1t hi\u1ec7n k\u1ecbp th\u1eddi s\u1ef1 gia t\u0103ng \u0111\u1ed9t ng\u1ed9t c\u1ee7a <strong>t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/strong> qua c\u00e1c d\u1ea5u hi\u1ec7u tr\u00ean cho ph\u00e9p \u0111\u1ed9i ng\u0169 IT c\u00f4 l\u1eadp v\u00e0 chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng tr\u01b0\u1edbc khi to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng s\u1eadp.<\/p>\n<figure id=\"attachment_34216\" aria-describedby=\"caption-attachment-34216\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34216\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Dau-hieu-nhan-biet-he-thong-bi-tan-cong.jpg\" alt=\"D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft h\u1ec7 th\u1ed1ng b\u1ecb t\u1ea5n c\u00f4ng\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Dau-hieu-nhan-biet-he-thong-bi-tan-cong.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Dau-hieu-nhan-biet-he-thong-bi-tan-cong-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Dau-hieu-nhan-biet-he-thong-bi-tan-cong-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-34216\" class=\"wp-caption-text\">D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft h\u1ec7 th\u1ed1ng b\u1ecb t\u1ea5n c\u00f4ng<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Tac-hai-cua-tan-cong-DoS-la-gi\"><\/span>T\u00e1c h\u1ea1i c\u1ee7a t\u1ea5n c\u00f4ng DoS l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>H\u1eadu qu\u1ea3 c\u1ee7a m\u1ed9t cu\u1ed9c <strong>DoS attack<\/strong> th\u00e0nh c\u00f4ng c\u00f3 th\u1ec3 k\u00e9o d\u00e0i v\u00e0 g\u00e2y t\u1ed5n th\u01b0\u01a1ng s\u00e2u s\u1eafc \u0111\u1ebfn nhi\u1ec1u m\u1eb7t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a doanh nghi\u1ec7p, kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf thi\u1ec7t h\u1ea1i k\u1ef9 thu\u1eadt.<\/p>\n<ul>\n<li><strong>Thi\u1ec7t h\u1ea1i T\u00e0i ch\u00ednh v\u00e0 Doanh thu:<\/strong> \u0110\u00e2y l\u00e0 <strong>t\u00e1c h\u1ea1i c\u1ee7a DoS attack<\/strong> tr\u1ef1c ti\u1ebfp nh\u1ea5t. \u0110\u1ed1i v\u1edbi c\u00e1c website th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, m\u1ed7i ph\u00fat d\u1ecbch v\u1ee5 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c m\u1ea5t \u0111i doanh s\u1ed1 b\u00e1n h\u00e0ng. <strong>Thi\u1ec7t h\u1ea1i do DDoS<\/strong> c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c ngh\u00ecn \u0111\u00f4 la m\u1ed7i gi\u1edd, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c s\u1ef1 ki\u1ec7n mua s\u1eafm l\u1edbn.<\/li>\n<li><strong>T\u1ed5n h\u1ea1i Uy t\u00edn v\u00e0 Ni\u1ec1m tin Kh\u00e1ch h\u00e0ng:<\/strong> Khi d\u1ecbch v\u1ee5 b\u1ecb gi\u00e1n \u0111o\u1ea1n, kh\u00e1ch h\u00e0ng s\u1ebd chuy\u1ec3n sang \u0111\u1ed1i th\u1ee7. Ni\u1ec1m tin v\u00e0o kh\u1ea3 n\u0103ng duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a c\u00f4ng ty b\u1ecb suy gi\u1ea3m nghi\u00eam tr\u1ecdng. Vi\u1ec7c kh\u00f4i ph\u1ee5c ni\u1ec1m tin n\u00e0y t\u1ed1n r\u1ea5t nhi\u1ec1u th\u1eddi gian v\u00e0 chi ph\u00ed ti\u1ebfp th\u1ecb.<\/li>\n<li><strong>Chi ph\u00ed Ph\u1ee5c h\u1ed3i v\u00e0 \u1ee8ng ph\u00f3:<\/strong> Doanh nghi\u1ec7p ph\u1ea3i chi tr\u1ea3 kh\u1ea9n c\u1ea5p cho c\u00e1c chuy\u00ean gia b\u1ea3o m\u1eadt, <strong>Bandwidth<\/strong> kh\u1ed5ng l\u1ed3 \u0111\u1ec3 ch\u1ed1ng \u0111\u1ee1, v\u00e0 chi ph\u00ed n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng\/ph\u1ea7n m\u1ec1m.<\/li>\n<li><strong>R\u1ee7i ro Ph\u00e1p l\u00fd v\u00e0 H\u1ee3p \u0111\u1ed3ng:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng ty cung c\u1ea5p d\u1ecbch v\u1ee5 b\u00ean th\u1ee9 ba (<a href=\"https:\/\/interdata.vn\/blog\/saas-la-gi\/\">SaaS<\/a>, Hosting), vi\u1ec7c d\u1ecbch v\u1ee5 b\u1ecb gi\u00e1n \u0111o\u1ea1n c\u00f3 th\u1ec3 vi ph\u1ea1m c\u00e1c th\u1ecfa thu\u1eadn m\u1ee9c d\u1ecbch v\u1ee5 (SLA), d\u1eabn \u0111\u1ebfn vi\u1ec7c ph\u1ea3i b\u1ed3i th\u01b0\u1eddng ho\u1eb7c b\u1ecb ch\u1ea5m d\u1ee9t h\u1ee3p \u0111\u1ed3ng.<\/li>\n<\/ul>\n<figure id=\"attachment_34217\" aria-describedby=\"caption-attachment-34217\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34217\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hau-qua-doi-voi-doanh-nghiep.jpg\" alt=\"H\u1eadu qu\u1ea3 \u0111\u1ed1i v\u1edbi doanh nghi\u1ec7p\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hau-qua-doi-voi-doanh-nghiep.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hau-qua-doi-voi-doanh-nghiep-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hau-qua-doi-voi-doanh-nghiep-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-34217\" class=\"wp-caption-text\">H\u1eadu qu\u1ea3 \u0111\u1ed1i v\u1edbi doanh nghi\u1ec7p<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Giai-phap-phong-ngua-va-ung-pho-DoS-attack\"><\/span>Gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba v\u00e0 \u1ee9ng ph\u00f3 DoS attack<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>C\u00e1ch ph\u00f2ng ch\u1ed1ng DDoS hi\u1ec7u qu\u1ea3<\/strong> ph\u1ea3i l\u00e0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c nhi\u1ec1u l\u1edbp, k\u1ebft h\u1ee3p gi\u1eefa c\u1ea5u h\u00ecnh m\u1ea1ng, d\u1ecbch v\u1ee5 chuy\u00ean bi\u1ec7t, v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u1ee9ng d\u1ee5ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c <strong>gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba DoS attack<\/strong> chi ti\u1ebft b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phong-ngua-o-tang-Mang-Network\"><\/span>Ph\u00f2ng ng\u1eeba \u1edf t\u1ea7ng M\u1ea1ng (Network)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c <strong>DoS attack<\/strong> Layer 3 v\u00e0 Layer 4.<\/p>\n<ol>\n<li><strong>S\u1eed d\u1ee5ng Router v\u00e0 Firewall:<\/strong> <strong>C\u1ea5u h\u00ecnh Firewall ch\u1ed1ng DDoS<\/strong> b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c lu\u1eadt l\u1ecdc g\u00f3i (Packet Filtering) \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c g\u00f3i tin c\u00f3 IP gi\u1ea3 m\u1ea1o (<strong>Spoofed IP<\/strong>) ho\u1eb7c c\u00e1c g\u00f3i tin kh\u00f4ng h\u1ee3p l\u1ec7 v\u1ec1 m\u1eb7t giao th\u1ee9c (v\u00ed d\u1ee5: c\u00e1c g\u00f3i tin nh\u1ecf c\u1ee7a Smurf Attack). \u0110\u1ea3m b\u1ea3o Router c\u00f3 c\u00e1c t\u00ednh n\u0103ng ch\u1ed1ng <strong>DDoS attack<\/strong> c\u01a1 b\u1ea3n.<\/li>\n<li><strong>Gi\u1edbi h\u1ea1n T\u1ed1c \u0111\u1ed9 (Rate Limiting):<\/strong> \u0110\u00e2y l\u00e0 k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n nh\u01b0ng c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ch\u1ed1ng l\u1ea1i <strong>DoS attack<\/strong>. Thi\u1ebft l\u1eadp gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i (SYN) ho\u1eb7c s\u1ed1 l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t trong m\u1ed9t kho\u1ea3ng th\u1eddi gian ng\u1eafn. K\u1ef9 thu\u1eadt n\u00e0y ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>SYN Flood<\/strong> v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng quy m\u00f4 nh\u1ecf t\u1eeb m\u1ed9t ngu\u1ed3n.<\/li>\n<li><strong>T\u0103ng c\u01b0\u1eddng B\u0103ng th\u00f4ng (Bandwidth):<\/strong> M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o, nh\u01b0ng vi\u1ec7c c\u00f3 <strong>Bandwidth<\/strong> d\u01b0 th\u1eeba s\u1ebd cho b\u1ea1n th\u00eam th\u1eddi gian \u0111\u1ec3 ph\u1ea3n \u1ee9ng. Dung l\u01b0\u1ee3ng <strong>Bandwidth<\/strong> l\u1edbn h\u01a1n c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c cu\u1ed9c <strong>DoS attack<\/strong> quy m\u00f4 nh\u1ecf v\u00e0 trung b\u00ecnh m\u00e0 kh\u00f4ng b\u1ecb qu\u00e1 t\u1ea3i ngay l\u1eadp t\u1ee9c.<\/li>\n<li><strong>C\u00e2n b\u1eb1ng T\u1ea3i (<a href=\"https:\/\/interdata.vn\/blog\/load-balancing\/\">Load Balancing<\/a>):<\/strong> S\u1eed d\u1ee5ng <strong>Load Balancer<\/strong> \u0111\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp tr\u00ean nhi\u1ec1u <strong>server<\/strong>. Khi m\u1ed9t cu\u1ed9c <strong>DDoS attack<\/strong> x\u1ea3y ra, l\u01b0\u1ee3ng Traffic s\u1ebd \u0111\u01b0\u1ee3c chia \u0111\u1ec1u, gi\u1ea3m \u00e1p l\u1ef1c l\u00ean b\u1ea5t k\u1ef3 <strong>server<\/strong> \u0111\u01a1n l\u1ebb n\u00e0o.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-Dich-vu-Chuyen-biet\"><\/span>S\u1eed d\u1ee5ng D\u1ecbch v\u1ee5 Chuy\u00ean bi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i ph\u00f3 v\u1edbi <strong>DDoS attack<\/strong> quy m\u00f4 l\u1edbn v\u00e0 tinh vi (Layer 7) \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng kh\u1ed5ng l\u1ed3.<\/p>\n<ol>\n<li><strong>M\u1ea1ng ph\u00e2n ph\u1ed1i N\u1ed9i dung (CDN):<\/strong> C\u00e1c <strong>d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS<\/strong> nh\u01b0 <strong>Cloudflare<\/strong>, Akamai l\u00e0 gi\u1ea3i ph\u00e1p h\u00e0ng \u0111\u1ea7u. <strong>CDN<\/strong> (<a href=\"https:\/\/interdata.vn\/blog\/cdn-la-gi\/\">Content Delivery Network<\/a>) ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ee9c t\u01b0\u1eddng trung gian, chuy\u1ec3n l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng \u0111\u1ebfn m\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 r\u1ed9ng l\u1edbn c\u1ee7a h\u1ecd. M\u1ea1ng l\u01b0\u1edbi n\u00e0y c\u00f3 <strong>Bandwidth<\/strong> l\u1edbn h\u01a1n nhi\u1ec1u l\u1ea7n so v\u1edbi b\u1ea5t k\u1ef3 doanh nghi\u1ec7p n\u00e0o, c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 v\u00e0 l\u1ecdc Traffic \u0111\u1ed9c h\u1ea1i, ch\u1ec9 cho ph\u00e9p Traffic h\u1ee3p l\u1ec7 \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 Anti-DDoS \u0110\u00e1m m\u00e2y (Cloud-based Anti-DDoS):<\/strong> C\u00e1c d\u1ecbch v\u1ee5 n\u00e0y chuy\u00ean v\u1ec1 vi\u1ec7c ph\u00e2n t\u00edch Traffic theo th\u1eddi gian th\u1ef1c (Behavioral Analysis) \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>Layer 7 DDoS attack<\/strong> tinh vi. Ch\u00fang s\u1eed d\u1ee5ng <a href=\"https:\/\/interdata.vn\/blog\/machine-learning-la-gi\/\">Machine Learning<\/a> v\u00e0 c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/thuat-toan-algorithm\/\">thu\u1eadt to\u00e1n<\/a> n\u00e2ng cao \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa ng\u01b0\u1eddi d\u00f9ng th\u1eadt v\u00e0 <strong>Botnet<\/strong>.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 Ch\u1ed1ng T\u1ea5n c\u00f4ng D\u1eef li\u1ec7u l\u1edbn:<\/strong> \u0110\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng khu\u1ebfch \u0111\u1ea1i, b\u1ea1n c\u1ea7n c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) ho\u1eb7c d\u1ecbch v\u1ee5 Anti-DDoS c\u00f3 kh\u1ea3 n\u0103ng <strong>&#8220;Blackhole Routing&#8221;<\/strong> ho\u1eb7c <strong>&#8220;Traffic Scrubbing&#8221;<\/strong> \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng v\u00e0 l\u00e0m s\u1ea1ch l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng tr\u01b0\u1edbc khi n\u00f3 \u0111\u1ebfn m\u1ea1ng c\u1ee7a b\u1ea1n.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Toi-uu-Server-va-Ung-dung\"><\/span>T\u1ed1i \u01b0u Server v\u00e0 \u1ee8ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ph\u00f2ng th\u1ee7 c\u0169ng ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf t\u1ea7ng \u1ee9ng d\u1ee5ng, n\u01a1i k\u1ebb t\u1ea5n c\u00f4ng Layer 7 nh\u1eafm \u0111\u1ebfn.<\/p>\n<ol>\n<li><strong>T\u1ed1i \u01b0u h\u00f3a <a href=\"https:\/\/interdata.vn\/blog\/source-code-la-gi\/\">m\u00e3 ngu\u1ed3n<\/a> v\u00e0 truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u:<\/strong> <strong>T\u1ed1i \u01b0u server ch\u1ed1ng DDoS<\/strong> b\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1c h\u00e0m t\u00ednh to\u00e1n c\u1ee7a \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nhanh nh\u1ea5t c\u00f3 th\u1ec3. M\u00e3 ngu\u1ed3n hi\u1ec7u qu\u1ea3 s\u1ebd gi\u1ea3m thi\u1ec3u th\u1eddi gian <strong>CPU<\/strong> ph\u1ea3i x\u1eed l\u00fd cho m\u1ed7i y\u00eau c\u1ea7u, l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1ed5ng th\u1ec3 c\u1ee7a <strong>server<\/strong>.<\/li>\n<li><strong>Thi\u1ebft l\u1eadp Session Timeout ng\u1eafn:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>DoS attack<\/strong> gi\u1eef k\u1ebft n\u1ed1i (nh\u01b0 Slowloris), vi\u1ec7c thi\u1ebft l\u1eadp <strong>Session Timeout<\/strong> (th\u1eddi gian ch\u1edd) ng\u1eafn s\u1ebd gi\u00fap <strong>server<\/strong> nhanh ch\u00f3ng gi\u1ea3i ph\u00f3ng t\u00e0i nguy\u00ean.<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t <a href=\"https:\/\/interdata.vn\/blog\/waf-la-gi\/\">WAF<\/a> (<a href=\"https:\/\/interdata.vn\/blog\/web-application-la-gi\/\">Web Application<\/a> Firewall):<\/strong> <strong>WAF<\/strong> c\u00f3 kh\u1ea3 n\u0103ng ch\u1eb7n c\u00e1c y\u00eau c\u1ea7u HTTP\/HTTPS \u0111\u1ed9c h\u1ea1i tr\u01b0\u1edbc khi ch\u00fang ch\u1ea1m \u0111\u1ebfn \u1ee9ng d\u1ee5ng. WAF r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng <strong>HTTP Flood<\/strong> v\u00ec ch\u00fang ph\u00e2n t\u00edch n\u1ed9i dung c\u1ee7a y\u00eau c\u1ea7u Layer 7.<\/li>\n<\/ol>\n<figure id=\"attachment_34218\" aria-describedby=\"caption-attachment-34218\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34218\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Giai-phap-phong-ngua-DoS-attack.jpg\" alt=\"Gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba DoS attack\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Giai-phap-phong-ngua-DoS-attack.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Giai-phap-phong-ngua-DoS-attack-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Giai-phap-phong-ngua-DoS-attack-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-34218\" class=\"wp-caption-text\">Gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba DoS attack<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Loi-khuyen-bao-mat-DoS-attack-nang-cao\"><\/span>L\u1eddi khuy\u00ean b\u1ea3o m\u1eadt DoS attack n\u00e2ng cao<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 kh\u00f4ng bao gi\u1edd ph\u1ea3i lo l\u1eafng v\u1ec1 m\u1ed9t cu\u1ed9c <strong>DoS attack<\/strong> \u0111\u1ed9t ng\u1ed9t, <a href=\"https:\/\/interdata.vn\/\"><strong>InterData<\/strong><\/a> g\u1ee3i \u00fd b\u1ea1n n\u00ean chuy\u1ec3n t\u1eeb t\u01b0 duy ph\u00f2ng th\u1ee7 sang t\u01b0 duy b\u1ea3o m\u1eadt chi\u1ebfn l\u01b0\u1ee3c. \u0110\u00e2y l\u00e0 nh\u1eefng <strong>l\u1eddi khuy\u00ean b\u1ea3o m\u1eadt n\u00e2ng cao<\/strong> gi\u00fap doanh nghi\u1ec7p c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng v\u00e0 t\u1ef1 ph\u1ee5c h\u1ed3i cao h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thiet-lap-Ke-hoach-Ung-pho-Tham-hoa-DRP-va-Dien-tap\"><\/span><strong>Thi\u1ebft l\u1eadp K\u1ebf ho\u1ea1ch \u1ee8ng ph\u00f3 Th\u1ea3m h\u1ecda (DRP) v\u00e0 Di\u1ec5n t\u1eadp<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>K\u1ebf ho\u1ea1ch ch\u1ec9 l\u00e0 l\u00fd thuy\u1ebft n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m. H\u00e3y t\u1ed5 ch\u1ee9c c\u00e1c bu\u1ed5i <strong>di\u1ec5n t\u1eadp \u1ee9ng ph\u00f3<\/strong> v\u1edbi k\u1ecbch b\u1ea3n <strong>DDoS attack<\/strong> \u00edt nh\u1ea5t hai l\u1ea7n m\u1ed9t n\u0103m. Vi\u1ec7c n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9i ng\u0169 IT bi\u1ebft ch\u00ednh x\u00e1c <strong>ph\u00f2ng ng\u1eeba v\u00e0 \u1ee9ng ph\u00f3<\/strong> nh\u01b0 th\u1ebf n\u00e0o khi kh\u1ee7ng ho\u1ea3ng x\u1ea3y ra.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ap-dung-Zero-Trust-Model\"><\/span><strong>\u00c1p d\u1ee5ng Zero Trust Model<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng tin t\u01b0\u1edfng b\u1ea5t k\u1ef3 ai ho\u1eb7c b\u1ea5t k\u1ef3 th\u1ee9 g\u00ec, ngay c\u1ea3 b\u00ean trong m\u1ea1ng gi\u00fap c\u00f4 l\u1eadp thi\u1ec7t h\u1ea1i do <strong>DoS attack<\/strong> n\u1ebfu k\u1ebb t\u1ea5n c\u00f4ng \u0111\u00e3 th\u00e2m nh\u1eadp \u0111\u01b0\u1ee3c v\u00e0o m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Da-dang-hoa-ha-tang\"><\/span><strong>\u0110a d\u1ea1ng h\u00f3a h\u1ea1 t\u1ea7ng<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ph\u00e2n t\u00e1n h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n tr\u00ean nhi\u1ec1u v\u00f9ng \u0111\u1ecba l\u00fd (Availability Zones) ho\u1eb7c th\u1eadm ch\u00ed nhi\u1ec1u nh\u00e0 cung c\u1ea5p Cloud kh\u00e1c nhau khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng kh\u00f3 kh\u0103n h\u01a1n trong vi\u1ec7c l\u00e0m t\u00ea li\u1ec7t to\u00e0n b\u1ed9 d\u1ecbch v\u1ee5 ch\u1ec9 b\u1eb1ng m\u1ed9t cu\u1ed9c <strong>DDoS attack<\/strong> \u0111\u01a1n l\u1ebb.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Giam-sat-Chu-dong-va-Phan-tich-Hanh-vi\"><\/span><strong>Gi\u00e1m s\u00e1t Ch\u1ee7 \u0111\u1ed9ng v\u00e0 Ph\u00e2n t\u00edch H\u00e0nh vi<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 AI\/Machine Learning \u0111\u1ec3 kh\u00f4ng ch\u1ec9 \u0111o l\u01b0\u1eddng l\u01b0\u1ee3ng Traffic m\u00e0 c\u00f2n <strong>ph\u00e2n t\u00edch h\u00e0nh vi<\/strong> c\u1ee7a Traffic. C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i tinh vi trong h\u00e0nh vi truy c\u1eadp (v\u00ed d\u1ee5: l\u01b0\u1ee3ng Request t\u1eeb m\u1ed9t User Agent t\u0103ng b\u1ea5t th\u01b0\u1eddng) \u2013 d\u1ea5u hi\u1ec7u c\u1ee7a m\u1ed9t cu\u1ed9c <strong>Layer 7 DDoS attack<\/strong> m\u1edbi ch\u1edbm.<\/p>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 <strong>DoS attack l\u00e0 g\u00ec<\/strong>, <strong>ph\u00e2n bi\u1ec7t DoS v\u00e0 DDoS<\/strong>, v\u00e0 \u00e1p d\u1ee5ng c\u00e1c chi\u1ebfn l\u01b0\u1ee3c ph\u00f2ng th\u1ee7 n\u00e2ng cao l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. An ninh m\u1ea1ng kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u00edch \u0111\u1ebfn, m\u00e0 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh li\u00ean t\u1ee5c. H\u00e3y \u0111\u1ec3 <strong>InterData<\/strong> tr\u1edf th\u00e0nh \u0111\u1ed1i t\u00e1c tin c\u1eady c\u1ee7a b\u1ea1n trong h\u00e0nh tr\u00ecnh b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng kh\u1ecfi m\u1ecdi m\u1ed1i \u0111e d\u1ecda <strong>t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DoS attack l\u00e0 h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1eb7c ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch l\u00e0m qu\u00e1 t\u1ea3i t\u00e0i nguy\u00ean. B\u00e0i vi\u1ebft s\u1ebd gi\u00fap b\u1ea1n t\u00ecm hi\u1ec3u DoS attack l\u00e0 g\u00ec, ph\u00e2n bi\u1ec7t r\u00f5 DoS v\u00e0 DDoS, hi\u1ec3u c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng, c\u00e1c ki\u1ec3u t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn nh\u01b0<\/p>\n","protected":false},"author":27,"featured_media":34219,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[83],"tags":[],"class_list":["post-34207","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bao-mat-an-ninh-mang"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/34207","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\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=34207"}],"version-history":[{"count":9,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/34207\/revisions"}],"predecessor-version":[{"id":34282,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/34207\/revisions\/34282"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/34219"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=34207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=34207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=34207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}