{"id":10736,"date":"2025-09-10T08:59:56","date_gmt":"2025-09-10T01:59:56","guid":{"rendered":"https:\/\/onesme.vn\/blog\/?p=10736"},"modified":"2025-11-27T09:50:00","modified_gmt":"2025-11-27T02:50:00","slug":"tan-cong-ddos-la-gi","status":"publish","type":"post","link":"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html","title":{"rendered":"T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec? A -Z v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, nh\u1eadn bi\u1ebft, ph\u00f2ng ch\u1ed1ng &#038; x\u1eed l\u00fd"},"content":{"rendered":"<p style=\"text-align: justify;\"><em>T\u1ea5n c\u00f4ng DDoS l\u00e0<\/em> <em>h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m qu\u00e1 t\u1ea3i v\u00e0 \u0111\u00e1nh s\u1eadp m\u1ed9t website ho\u1eb7c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t lu\u1ed3ng truy c\u1eadp gi\u1ea3 m\u1ea1o kh\u1ed5ng l\u1ed3 t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau. Trong b\u1ed1i c\u1ea3nh m\u1ecdi ho\u1ea1t \u0111\u1ed9ng kinh doanh \u0111\u1ec1u ph\u1ee5 thu\u1ed9c v\u00e0o Internet, vi\u1ec7c hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a m\u1ed1i \u0111e d\u1ecda n\u00e0y kh\u00f4ng c\u00f2n l\u00e0 ki\u1ebfn th\u1ee9c k\u1ef9 thu\u1eadt m\u00e0 \u0111\u00e3 tr\u1edf th\u00e0nh k\u1ef9 n\u0103ng s\u1ed1ng c\u00f2n. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u1ec1 <\/em><strong><em>t\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec<\/em><\/strong><em>, ph\u00e2n t\u00edch c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng hi\u1ec7u qu\u1ea3 nh\u1ea5t.<\/em><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_43 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">M\u1ee5c l\u1ee5c<\/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\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-69e09c664e61e\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #000000;color:#000000\" 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: #000000;color:#000000\" 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><\/label><input  type=\"checkbox\" id=\"item-69e09c664e61e\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#1_Tan_cong_DDoS_la_gi_Giai_thich_don_gian_nhat\" title=\"1. T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n nh\u1ea5t\">1. T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n nh\u1ea5t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#2_Phan_biet_tan_cong_DoS_va_tan_cong_DDoS\" title=\"2. Ph\u00e2n bi\u1ec7t t\u1ea5n c\u00f4ng DoS v\u00e0 t\u1ea5n c\u00f4ng DDoS\">2. Ph\u00e2n bi\u1ec7t t\u1ea5n c\u00f4ng DoS v\u00e0 t\u1ea5n c\u00f4ng 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:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#3_Cach_thuc_hoat_dong_cua_mot_cuoc_tan_cong_DDoS_dien_hinh\" title=\"3. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111i\u1ec3n h\u00ecnh\">3. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111i\u1ec3n h\u00ecnh<\/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:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#31_Buoc_1_Xay_dung_mang_Botnet_Doi_quan_Zombie\" title=\"3.1. B\u01b0\u1edbc 1: X\u00e2y d\u1ef1ng m\u1ea1ng Botnet (\u0110\u1ed9i qu\u00e2n Zombie)\">3.1. B\u01b0\u1edbc 1: X\u00e2y d\u1ef1ng m\u1ea1ng Botnet (\u0110\u1ed9i qu\u00e2n Zombie)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#32_Buoc_2_Ra_lenh_tan_cong_Tu_Ke_chu_muu\" title=\"3.2. B\u01b0\u1edbc 2: Ra l\u1ec7nh t\u1ea5n c\u00f4ng (T\u1eeb K\u1ebb ch\u1ee7 m\u01b0u)\">3.2. B\u01b0\u1edbc 2: Ra l\u1ec7nh t\u1ea5n c\u00f4ng (T\u1eeb K\u1ebb ch\u1ee7 m\u01b0u)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#33_Buoc_3_Gui_luu_luong_truy_cap_o_at_Lam_ngap_lut_muc_tieu\" title=\"3.3. B\u01b0\u1edbc 3: G\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u1ed3 \u1ea1t (L\u00e0m ng\u1eadp l\u1ee5t m\u1ee5c ti\u00eau)\">3.3. B\u01b0\u1edbc 3: G\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u1ed3 \u1ea1t (L\u00e0m ng\u1eadp l\u1ee5t m\u1ee5c ti\u00eau)<\/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:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#4_3_loai_tan_cong_DDoS_pho_bien_nhat_hien_nay\" title=\"4. 3 lo\u1ea1i t\u1ea5n c\u00f4ng DDoS ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay\">4. 3 lo\u1ea1i t\u1ea5n c\u00f4ng DDoS ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay<\/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:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#41_Tan_cong_Tang_Bang_thong_Volumetric_Attacks\" title=\"4.1. T\u1ea5n c\u00f4ng T\u1ea7ng B\u0103ng th\u00f4ng (Volumetric Attacks)\">4.1. T\u1ea5n c\u00f4ng T\u1ea7ng B\u0103ng th\u00f4ng (Volumetric Attacks)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#42_Tan_cong_Tang_Giao_thuc_Protocol_Attacks\" title=\"4.2. T\u1ea5n c\u00f4ng T\u1ea7ng Giao th\u1ee9c (Protocol Attacks)\">4.2. T\u1ea5n c\u00f4ng T\u1ea7ng Giao th\u1ee9c (Protocol Attacks)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#43_Tan_cong_Tang_Ung_dung_Application_Layer_Attacks\" title=\"4.3. T\u1ea5n c\u00f4ng T\u1ea7ng \u1ee8ng d\u1ee5ng (Application Layer Attacks)\">4.3. T\u1ea5n c\u00f4ng T\u1ea7ng \u1ee8ng d\u1ee5ng (Application Layer Attacks)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#5_4_Dau_hieu_nhan_biet_website_dang_bi_tan_cong_DDoS\" title=\"5. 4 D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft website \u0111ang b\u1ecb t\u1ea5n c\u00f4ng DDoS\">5. 4 D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft website \u0111ang b\u1ecb t\u1ea5n c\u00f4ng DDoS<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#51_Hieu_suat_website_suy_giam_nghiem_trong_hoac_khong_the_truy_cap\" title=\"5.1. Hi\u1ec7u su\u1ea5t website suy gi\u1ea3m nghi\u00eam tr\u1ecdng ho\u1eb7c kh\u00f4ng th\u1ec3 truy c\u1eadp\">5.1. Hi\u1ec7u su\u1ea5t website suy gi\u1ea3m nghi\u00eam tr\u1ecdng ho\u1eb7c kh\u00f4ng th\u1ec3 truy c\u1eadp<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#52_Luong_truy_cap_mang_Network_Traffic_tang_vot_bat_thuong\" title=\"5.2. L\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng (Network Traffic) t\u0103ng v\u1ecdt b\u1ea5t th\u01b0\u1eddng\">5.2. L\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng (Network Traffic) t\u0103ng v\u1ecdt b\u1ea5t th\u01b0\u1eddng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#53_Tai_nguyen_may_chu_bi_can_kiet_Server_Overload\" title=\"5.3. T\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 b\u1ecb c\u1ea1n ki\u1ec7t (Server Overload)\">5.3. T\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 b\u1ecb c\u1ea1n ki\u1ec7t (Server Overload)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#54_Su_co_tren_toan_bo_mang_cuc_bo\" title=\"5.4. S\u1ef1 c\u1ed1 tr\u00ean to\u00e0n b\u1ed9 m\u1ea1ng c\u1ee5c b\u1ed9\">5.4. S\u1ef1 c\u1ed1 tr\u00ean to\u00e0n b\u1ed9 m\u1ea1ng c\u1ee5c 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-16\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#6_Huong_dan_cac_bien_phap_phong_chong_tan_cong_DDoS_hieu_qua\" title=\"6. H\u01b0\u1edbng d\u1eabn c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS hi\u1ec7u qu\u1ea3\">6. H\u01b0\u1edbng d\u1eabn c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS hi\u1ec7u qu\u1ea3<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#61_Giai_phap_co_ban_Tu_trien_khai\" title=\"6.1. Gi\u1ea3i ph\u00e1p c\u01a1 b\u1ea3n (T\u1ef1 tri\u1ec3n khai)\">6.1. Gi\u1ea3i ph\u00e1p c\u01a1 b\u1ea3n (T\u1ef1 tri\u1ec3n khai)<\/a><ul class='ez-toc-list-level-4'><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#611_Tang_cuong_bang_thong_cho_may_chu_Overprovisioning_Bandwidth\" title=\"6.1.1. T\u0103ng c\u01b0\u1eddng b\u0103ng th\u00f4ng cho m\u00e1y ch\u1ee7 (Overprovisioning Bandwidth)\">6.1.1. T\u0103ng c\u01b0\u1eddng b\u0103ng th\u00f4ng cho m\u00e1y ch\u1ee7 (Overprovisioning Bandwidth)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#612_Cau_hinh_Tuong_lua_Firewall_va_Router\" title=\"6.1.2. C\u1ea5u h\u00ecnh T\u01b0\u1eddng l\u1eeda (Firewall) v\u00e0 Router\">6.1.2. C\u1ea5u h\u00ecnh T\u01b0\u1eddng l\u1eeda (Firewall) v\u00e0 Router<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#62_Giai_phap_nang_cao_Su_dung_dich_vu_chuyen_nghiep\" title=\"6.2. Gi\u1ea3i ph\u00e1p n\u00e2ng cao (S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 chuy\u00ean nghi\u1ec7p)\">6.2. Gi\u1ea3i ph\u00e1p n\u00e2ng cao (S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 chuy\u00ean nghi\u1ec7p)<\/a><ul class='ez-toc-list-level-4'><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#621_Su_dung_dich_vu_chong_DDoS_chuyen_dung_Anti-DDoS_Scrubbing_Service\" title=\"6.2.1. S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS chuy\u00ean d\u1ee5ng (Anti-DDoS Scrubbing Service)\">6.2.1. S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS chuy\u00ean d\u1ee5ng (Anti-DDoS Scrubbing Service)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#622_Su_dung_Mang_phan_phoi_noi_dung_CDN_-_Content_Delivery_Network\" title=\"6.2.2. S\u1eed d\u1ee5ng M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN &#8211; Content Delivery Network)\">6.2.2. S\u1eed d\u1ee5ng M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN &#8211; Content Delivery Network)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#623_Lien_he_nha_cung_cap_dich_vu_Internet_ISP\" title=\"6.2.3. Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP)\">6.2.3. Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP)<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#7_Phai_lam_gi_NGAY_LAP_TUC_khi_bi_tan_cong_DDoS\" title=\"7. Ph\u1ea3i l\u00e0m g\u00ec NGAY L\u1eacP T\u1ee8C khi b\u1ecb t\u1ea5n c\u00f4ng DDoS?\">7. Ph\u1ea3i l\u00e0m g\u00ec NGAY L\u1eacP T\u1ee8C khi b\u1ecb t\u1ea5n c\u00f4ng DDoS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/onesme.vn\/blog\/tin-tuc-su-kien\/tan-cong-ddos-la-gi.html\/#8_VNPT_Anti-DDoS_-_Giai_phap_bao_ve_chuyen_nghiep_cho_doanh_nghiep_Viet\" title=\"8. VNPT Anti-DDoS &#8211; Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 chuy\u00ean nghi\u1ec7p cho doanh nghi\u1ec7p Vi\u1ec7t\">8. VNPT Anti-DDoS &#8211; Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 chuy\u00ean nghi\u1ec7p cho doanh nghi\u1ec7p Vi\u1ec7t<\/a><\/li><\/ul><\/nav><\/div>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"1_Tan_cong_DDoS_la_gi_Giai_thich_don_gian_nhat\"><\/span>1. T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n nh\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><strong>DDoS<\/strong> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>D<\/strong>istributed <strong>D<\/strong>enial of <strong>S<\/strong>ervice, ngh\u0129a l\u00e0 <strong>T\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n<\/strong>. \u0110\u1ec3 hi\u1ec3u r\u00f5, ch\u00fang ta h\u00e3y ph\u00e2n t\u00edch t\u1eebng th\u00e0nh ph\u1ea7n:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>T\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 (Denial of Service):<\/strong> \u0110\u00e2y l\u00e0 m\u1ee5c ti\u00eau cu\u1ed1i c\u00f9ng c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng, \u0111\u00f3 l\u00e0 l\u00e0m cho m\u1ed9t m\u00e1y ch\u1ee7, d\u1ecbch v\u1ee5 ho\u1eb7c t\u00e0i nguy\u00ean m\u1ea1ng (nh\u01b0 website c\u1ee7a b\u1ea1n) kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng, ph\u1ee5c v\u1ee5 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7.<\/li>\n<li style=\"text-align: justify;\"><strong>Ph\u00e2n t\u00e1n (Distributed):<\/strong> \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 l\u00e0m cho DDoS tr\u1edf n\u00ean nguy hi\u1ec3m. Thay v\u00ec t\u1ea5n c\u00f4ng t\u1eeb m\u1ed9t ngu\u1ed3n duy nh\u1ea5t, cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1eeb h\u00e0ng tr\u0103m, h\u00e0ng ng\u00e0n, th\u1eadm ch\u00ed h\u00e0ng tri\u1ec7u m\u00e1y t\u00ednh kh\u00e1c nhau tr\u00ean to\u00e0n th\u1ebf gi\u1edbi c\u00f9ng m\u1ed9t l\u00fac, khi\u1ebfn vi\u1ec7c ng\u0103n ch\u1eb7n tr\u1edf n\u00ean c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">T\u00f3m l\u1ea1i, t\u1ea5n c\u00f4ng DDoS l\u00e0 h\u00ecnh th\u1ee9c s\u1eed d\u1ee5ng m\u1ed9t m\u1ea1ng l\u01b0\u1edbi m\u00e1y t\u00ednh kh\u1ed5ng l\u1ed3 \u0111\u1ec3 l\u00e0m ng\u1eadp l\u1ee5t m\u1ed9t m\u1ee5c ti\u00eau b\u1eb1ng l\u01b0\u1ee3ng truy c\u1eadp kh\u1ed5ng l\u1ed3, khi\u1ebfn d\u1ecbch v\u1ee5 c\u1ee7a m\u1ee5c ti\u00eau \u0111\u00f3 b\u1ecb t\u00ea li\u1ec7t v\u00e0 kh\u00f4ng th\u1ec3 ph\u1ee5c v\u1ee5 ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7.<\/p>\n<p style=\"text-align: justify;\"><strong>V\u00ed d\u1ee5 minh h\u1ecda d\u1ec5 hi\u1ec3u: <\/strong>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng website c\u1ee7a b\u1ea1n l\u00e0 m\u1ed9t c\u1eeda h\u00e0ng th\u1ef1c t\u1ebf.<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>Ng\u01b0\u1eddi d\u00f9ng b\u00ecnh th\u01b0\u1eddng<\/strong> l\u00e0 nh\u1eefng kh\u00e1ch h\u00e0ng th\u1ef1c s\u1ef1 mu\u1ed1n v\u00e0o mua s\u1eafm.<\/li>\n<li style=\"text-align: justify;\">M\u1ed9t cu\u1ed9c <strong>t\u1ea5n c\u00f4ng DDoS<\/strong> gi\u1ed1ng nh\u01b0 vi\u1ec7c m\u1ed9t k\u1ebb x\u1ea5u thu\u00ea h\u00e0ng ng\u00e0n ng\u01b0\u1eddi gi\u1ea3 m\u1ea1o, \u0111\u1ed3ng lo\u1ea1t \u00f9a v\u00e0o c\u1eeda h\u00e0ng c\u1ee7a b\u1ea1n. H\u1ecd kh\u00f4ng mua b\u1ea5t k\u1ef3 th\u1ee9 g\u00ec, m\u00e0 ch\u1ec9 \u0111\u1ee9ng chen ch\u00fac, ch\u1eb7n h\u1ebft m\u1ecdi l\u1ed1i \u0111i, qu\u1ea7y thu ng\u00e2n v\u00e0 c\u1eeda ra v\u00e0o.<\/li>\n<li style=\"text-align: justify;\"><strong>K\u1ebft qu\u1ea3:<\/strong> Nh\u1eefng kh\u00e1ch h\u00e0ng th\u1ef1c s\u1ef1 kh\u00f4ng th\u1ec3 n\u00e0o v\u00e0o \u0111\u01b0\u1ee3c c\u1eeda h\u00e0ng, vi\u1ec7c kinh doanh b\u1ecb \u0111\u00ecnh tr\u1ec7 ho\u00e0n to\u00e0n. C\u1eeda h\u00e0ng c\u1ee7a b\u1ea1n \u0111\u00e3 b\u1ecb &#8220;t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5&#8221;.<\/li>\n<\/ul>\n<figure id=\"attachment_10743\" aria-describedby=\"caption-attachment-10743\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10743 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-ddos-la-hinh-thuc-tan-cong-mang-nham-lam-qua-tai-va-danh-sap-mot-website-hoac-dich-vu-truc-tuyen-bang-cach-tao-ra-mot-luong-truy-cap-gia-mao-khong-lo.png\" alt=\"T\u1ea5n c\u00f4ng DDoS l\u00e0 h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m qu\u00e1 t\u1ea3i v\u00e0 \u0111\u00e1nh s\u1eadp m\u1ed9t website\" width=\"800\" height=\"420\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-ddos-la-hinh-thuc-tan-cong-mang-nham-lam-qua-tai-va-danh-sap-mot-website-hoac-dich-vu-truc-tuyen-bang-cach-tao-ra-mot-luong-truy-cap-gia-mao-khong-lo.png 800w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-ddos-la-hinh-thuc-tan-cong-mang-nham-lam-qua-tai-va-danh-sap-mot-website-hoac-dich-vu-truc-tuyen-bang-cach-tao-ra-mot-luong-truy-cap-gia-mao-khong-lo-300x158.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-ddos-la-hinh-thuc-tan-cong-mang-nham-lam-qua-tai-va-danh-sap-mot-website-hoac-dich-vu-truc-tuyen-bang-cach-tao-ra-mot-luong-truy-cap-gia-mao-khong-lo-768x403.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-ddos-la-hinh-thuc-tan-cong-mang-nham-lam-qua-tai-va-danh-sap-mot-website-hoac-dich-vu-truc-tuyen-bang-cach-tao-ra-mot-luong-truy-cap-gia-mao-khong-lo-150x79.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-ddos-la-hinh-thuc-tan-cong-mang-nham-lam-qua-tai-va-danh-sap-mot-website-hoac-dich-vu-truc-tuyen-bang-cach-tao-ra-mot-luong-truy-cap-gia-mao-khong-lo-696x365.png 696w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-10743\" class=\"wp-caption-text\">T\u1ea5n c\u00f4ng DDoS l\u00e0 h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m qu\u00e1 t\u1ea3i v\u00e0 \u0111\u00e1nh s\u1eadp m\u1ed9t website ho\u1eb7c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t lu\u1ed3ng truy c\u1eadp gi\u1ea3 m\u1ea1o kh\u1ed5ng l\u1ed3<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><strong>T\u1ea5n c\u00f4ng DDoS c\u00f3 vi ph\u1ea1m ph\u00e1p lu\u1eadt kh\u00f4ng?<\/strong><\/p>\n<p style=\"text-align: justify;\">C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 <strong>C\u00d3<\/strong>. T\u1ea5n c\u00f4ng DDoS l\u00e0 m\u1ed9t h\u00e0nh vi <strong>vi ph\u1ea1m ph\u00e1p lu\u1eadt nghi\u00eam tr\u1ecdng<\/strong> \u1edf h\u1ea7u h\u1ebft c\u00e1c qu\u1ed1c gia, trong \u0111\u00f3 c\u00f3 Vi\u1ec7t Nam.<\/p>\n<p style=\"text-align: justify;\">T\u1ea1i Vi\u1ec7t Nam, h\u00e0nh vi n\u00e0y c\u00f3 th\u1ec3 b\u1ecb truy c\u1ee9u tr\u00e1ch nhi\u1ec7m h\u00ecnh s\u1ef1 theo <strong>\u0110i\u1ec1u 289 <\/strong><a href=\"https:\/\/luatvietnam.vn\/hinh-su\/bo-luat-hinh-su-2015-101324-d1.html\" target=\"_blank\" rel=\"noopener\"><strong><u>B\u1ed9 lu\u1eadt H\u00ecnh s\u1ef1 2015<\/u><\/strong><\/a> v\u1ec1 t\u1ed9i &#8220;C\u1ea3n tr\u1edf ho\u1eb7c g\u00e2y r\u1ed1i lo\u1ea1n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh, m\u1ea1ng vi\u1ec5n th\u00f4ng, ph\u01b0\u01a1ng ti\u1ec7n \u0111i\u1ec7n t\u1eed&#8221;. Ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n h\u00e0nh vi n\u00e0y c\u00f3 th\u1ec3 ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00e1c h\u00ecnh ph\u1ea1t n\u1eb7ng, bao g\u1ed3m ph\u1ea1t ti\u1ec1n v\u00e0 ph\u1ea1t t\u00f9.<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"2_Phan_biet_tan_cong_DoS_va_tan_cong_DDoS\"><\/span>2. Ph\u00e2n bi\u1ec7t t\u1ea5n c\u00f4ng DoS v\u00e0 t\u1ea5n c\u00f4ng DDoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng nh\u1ea7m l\u1eabn gi\u1eefa hai kh\u00e1i ni\u1ec7m n\u00e0y, nh\u01b0ng s\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 r\u1ea5t l\u1edbn.<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>T\u1ea5n c\u00f4ng DoS (Denial of Service):<\/strong> Cu\u1ed9c t\u1ea5n c\u00f4ng ch\u1ec9 xu\u1ea5t ph\u00e1t t\u1eeb <strong>M\u1ed8T<\/strong> ngu\u1ed3n (m\u1ed9t m\u00e1y t\u00ednh) duy nh\u1ea5t. Gi\u1ed1ng nh\u01b0 m\u1ed9t ng\u01b0\u1eddi c\u1ed1 t\u00ecnh \u0111\u1ee9ng ch\u1eb7n c\u1eeda h\u00e0ng c\u1ee7a b\u1ea1n, vi\u1ec7c n\u00e0y t\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 ph\u00e1t hi\u1ec7n v\u00e0 x\u1eed l\u00fd (ch\u1ec9 c\u1ea7n ch\u1eb7n \u0111\u1ecba ch\u1ec9 IP c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng \u0111\u00f3).<\/li>\n<li style=\"text-align: justify;\"><strong>T\u1ea5n c\u00f4ng DDoS (Distributed Denial of Service):<\/strong> Cu\u1ed9c t\u1ea5n c\u00f4ng xu\u1ea5t ph\u00e1t t\u1eeb <strong>H\u00c0NG NG\u00c0N<\/strong> ngu\u1ed3n kh\u00e1c nhau. Vi\u1ec7c ch\u1eb7n t\u1eebng \u0111\u1ecba ch\u1ec9 IP m\u1ed9t l\u00e0 b\u1ea5t kh\u1ea3 thi v\u00e0 kh\u00f4ng hi\u1ec7u qu\u1ea3, v\u00ec b\u1ea1n kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u00e2u l\u00e0 &#8220;kh\u00e1ch h\u00e0ng gi\u1ea3 m\u1ea1o&#8221;, \u0111\u00e2u l\u00e0 &#8220;kh\u00e1ch h\u00e0ng th\u1eadt&#8221;.<\/li>\n<\/ul>\n<figure id=\"attachment_10737\" aria-describedby=\"caption-attachment-10737\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10737 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/co-su-khac-biet-giua-tan-cong-dos-va-tan-cong-ddos.png\" alt=\"C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1ea5n c\u00f4ng DoS v\u00e0 t\u1ea5n c\u00f4ng DDoS\" width=\"900\" height=\"500\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/co-su-khac-biet-giua-tan-cong-dos-va-tan-cong-ddos.png 900w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/co-su-khac-biet-giua-tan-cong-dos-va-tan-cong-ddos-300x167.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/co-su-khac-biet-giua-tan-cong-dos-va-tan-cong-ddos-768x427.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/co-su-khac-biet-giua-tan-cong-dos-va-tan-cong-ddos-150x83.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/co-su-khac-biet-giua-tan-cong-dos-va-tan-cong-ddos-696x387.png 696w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-10737\" class=\"wp-caption-text\">C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1ea5n c\u00f4ng DoS v\u00e0 t\u1ea5n c\u00f4ng DDoS<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"3_Cach_thuc_hoat_dong_cua_mot_cuoc_tan_cong_DDoS_dien_hinh\"><\/span>3. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111i\u1ec3n h\u00ecnh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS tinh vi th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00e0n d\u1ef1ng qua ba b\u01b0\u1edbc ch\u00ednh:<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"31_Buoc_1_Xay_dung_mang_Botnet_Doi_quan_Zombie\"><\/span>3.1. B\u01b0\u1edbc 1: X\u00e2y d\u1ef1ng m\u1ea1ng Botnet (\u0110\u1ed9i qu\u00e2n Zombie)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u1ea7u ti\u00ean, tin t\u1eb7c (hacker) c\u1ea7n m\u1ed9t &#8220;\u0111\u1ed9i qu\u00e2n&#8221;. Ch\u00fang s\u1ebd \u00e2m th\u1ea7m x\u00e2y d\u1ef1ng m\u1ed9t m\u1ea1ng l\u01b0\u1edbi c\u00e1c thi\u1ebft b\u1ecb b\u1ecb nhi\u1ec5m m\u00e3 \u0111\u1ed9c v\u00e0 b\u1ecb chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n m\u00e0 ch\u1ee7 nh\u00e2n kh\u00f4ng h\u1ec1 hay bi\u1ebft. M\u1ea1ng l\u01b0\u1edbi n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>Botnet<\/strong>, v\u00e0 m\u1ed7i thi\u1ebft b\u1ecb trong \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1ed9t <strong>&#8220;bot&#8221;<\/strong> hay <strong>&#8220;zombie&#8221;<\/strong>.<\/p>\n<p style=\"text-align: justify;\"><strong>Ph\u01b0\u01a1ng th\u1ee9c l\u00e2y nhi\u1ec5m:<\/strong> Tin t\u1eb7c t\u1ea1o ra Botnet b\u1eb1ng c\u00e1ch ph\u00e1t t\u00e1n virus, m\u00e3 \u0111\u1ed9c, trojan qua nhi\u1ec1u con \u0111\u01b0\u1eddng:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>Email l\u1eeba \u0111\u1ea3o (Phishing):<\/strong> G\u1eedi email ch\u1ee9a c\u00e1c t\u1ec7p \u0111\u00ednh k\u00e8m ho\u1eb7c \u0111\u01b0\u1eddng link \u0111\u1ed9c h\u1ea1i.<\/li>\n<li style=\"text-align: justify;\"><strong>Ph\u1ea7n m\u1ec1m b\u1ebb kh\u00f3a (Crack):<\/strong> L\u1ee3i d\u1ee5ng nhu c\u1ea7u s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m mi\u1ec5n ph\u00ed \u0111\u1ec3 c\u00e0i c\u1eafm m\u00e3 \u0111\u1ed9c.<\/li>\n<li style=\"text-align: justify;\"><strong>L\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt:<\/strong> Khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng ch\u01b0a \u0111\u01b0\u1ee3c v\u00e1 c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh ho\u1eb7c ph\u1ea7n m\u1ec1m.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>Quy m\u00f4:<\/strong> M\u1ed9t botnet c\u00f3 th\u1ec3 bao g\u1ed3m t\u1eeb v\u00e0i ngh\u00ecn \u0111\u1ebfn h\u00e0ng tri\u1ec7u thi\u1ebft b\u1ecb, kh\u00f4ng ch\u1ec9 l\u00e0 m\u00e1y t\u00ednh c\u00e1 nh\u00e2n m\u00e0 c\u00f2n c\u00f3 c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb IoT (Internet of Things) nh\u01b0 camera an ninh, smart TV, router wifi&#8230; \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t \u0111\u1ed9i qu\u00e2n t\u1ea5n c\u00f4ng v\u1edbi quy m\u00f4 kh\u1ed5ng l\u1ed3 v\u00e0 c\u1ef1c k\u1ef3 \u0111a d\u1ea1ng.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"32_Buoc_2_Ra_lenh_tan_cong_Tu_Ke_chu_muu\"><\/span>3.2. B\u01b0\u1edbc 2: Ra l\u1ec7nh t\u1ea5n c\u00f4ng (T\u1eeb K\u1ebb ch\u1ee7 m\u01b0u)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">K\u1ebb t\u1ea5n c\u00f4ng, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>botmaster<\/strong>, s\u1ebd kh\u00f4ng tr\u1ef1c ti\u1ebfp ra l\u1ec7nh t\u1eeb m\u00e1y t\u00ednh c\u00e1 nh\u00e2n c\u1ee7a m\u00ecnh. Thay v\u00e0o \u0111\u00f3, h\u1eafn s\u1eed d\u1ee5ng m\u1ed9t ho\u1eb7c nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111i\u1ec1u khi\u1ec3n v\u00e0 ra l\u1ec7nh (g\u1ecdi l\u00e0 <strong>Command &amp; Control &#8211; C&amp;C server<\/strong>). \u0110\u00e2y l\u00e0 &#8220;b\u1ed9 n\u00e3o&#8221; c\u1ee7a chi\u1ebfn d\u1ecbch. T\u1eeb m\u00e1y ch\u1ee7 C&amp;C, botmaster c\u00f3 th\u1ec3 g\u1eedi l\u1ec7nh \u0111\u1ed3ng lo\u1ea1t \u0111\u1ebfn to\u00e0n b\u1ed9 &#8220;\u0111\u1ed9i qu\u00e2n zombie&#8221; trong m\u1ea1ng botnet \u0111\u1ec3 b\u1eaft \u0111\u1ea7u cu\u1ed9c t\u1ea5n c\u00f4ng v\u00e0o m\u1ed9t m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3. C\u00e1c k\u00eanh giao ti\u1ebfp n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u1ec3 tr\u00e1nh b\u1ecb ph\u00e1t hi\u1ec7n.<\/p>\n<figure id=\"attachment_10741\" aria-describedby=\"caption-attachment-10741\" style=\"width: 2048px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10741 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh.png\" alt=\"M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS tinh vi th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00e0n d\u1ef1ng qua ba b\u01b0\u1edbc ch\u00ednh\" width=\"2048\" height=\"1230\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh.png 2048w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-300x180.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-1024x615.png 1024w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-768x461.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-1536x923.png 1536w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-150x90.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-696x418.png 696w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-1068x641.png 1068w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/mot-cuoc-tan-cong-ddos-tinh-vi-thuong-duoc-dan-dung-qua-ba-buoc-chinh-1920x1153.png 1920w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><figcaption id=\"caption-attachment-10741\" class=\"wp-caption-text\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS tinh vi th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00e0n d\u1ef1ng qua ba b\u01b0\u1edbc ch\u00ednh<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"33_Buoc_3_Gui_luu_luong_truy_cap_o_at_Lam_ngap_lut_muc_tieu\"><\/span>3.3. B\u01b0\u1edbc 3: G\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u1ed3 \u1ea1t (L\u00e0m ng\u1eadp l\u1ee5t m\u1ee5c ti\u00eau)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Khi nh\u1eadn \u0111\u01b0\u1ee3c l\u1ec7nh, to\u00e0n b\u1ed9 c\u00e1c thi\u1ebft b\u1ecb &#8220;zombie&#8221; trong botnet s\u1ebd \u0111\u1ed3ng lo\u1ea1t g\u1eedi m\u1ed9t l\u01b0\u1ee3ng y\u00eau c\u1ea7u (request) v\u00e0 d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3 \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u1ee5c ti\u00eau (website, m\u00e1y ch\u1ee7&#8230;).<\/p>\n<p style=\"text-align: justify;\"><strong>T\u00e1c \u0111\u1ed9ng:<\/strong> Lu\u1ed3ng truy c\u1eadp kh\u1ed5ng l\u1ed3 n\u00e0y, c\u00f3 th\u1ec3 l\u00ean t\u1edbi h\u00e0ng tr\u0103m Gigabits ho\u1eb7c th\u1eadm ch\u00ed Terabits m\u1ed7i gi\u00e2y s\u1ebd l\u00e0m qu\u00e1 t\u1ea3i ho\u00e0n to\u00e0n t\u00e0i nguy\u00ean c\u1ee7a m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>B\u0103ng th\u00f4ng m\u1ea1ng (Bandwidth):<\/strong> Gi\u1ed1ng nh\u01b0 m\u1ed9t con \u0111\u01b0\u1eddng b\u1ecb k\u1eb9t c\u1ee9ng, \u0111\u01b0\u1eddng truy\u1ec1n Internet c\u1ee7a m\u00e1y ch\u1ee7 b\u1ecb l\u1ea5p \u0111\u1ea7y b\u1edfi c\u00e1c d\u1eef li\u1ec7u r\u00e1c, khi\u1ebfn c\u00e1c d\u1eef li\u1ec7u h\u1ee3p l\u1ec7 kh\u00f4ng th\u1ec3 \u0111i qua.<\/li>\n<li style=\"text-align: justify;\"><strong>T\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng (CPU, RAM):<\/strong> B\u1ed9 x\u1eed l\u00fd (CPU) v\u00e0 b\u1ed9 nh\u1edb (RAM) c\u1ee7a m\u00e1y ch\u1ee7 b\u1ecb ti\u00eau hao h\u1ebft c\u00f4ng su\u1ea5t \u0111\u1ec3 x\u1eed l\u00fd h\u00e0ng tri\u1ec7u y\u00eau c\u1ea7u v\u00f4 ngh\u0129a, kh\u00f4ng c\u00f2n t\u00e0i nguy\u00ean \u0111\u1ec3 ph\u1ee5c v\u1ee5 c\u00e1c y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng th\u1eadt.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>K\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng:<\/strong> M\u00e1y ch\u1ee7 tr\u1edf n\u00ean qu\u00e1 t\u1ea3i, kh\u00f4ng th\u1ec3 ph\u1ea3n h\u1ed3i v\u00e0 s\u1ee5p \u0111\u1ed5. Website ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ee7a n\u1ea1n nh\u00e2n s\u1ebd ho\u00e0n to\u00e0n ngo\u1ea1i tuy\u1ebfn, kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"4_3_loai_tan_cong_DDoS_pho_bien_nhat_hien_nay\"><\/span>4. 3 lo\u1ea1i t\u1ea5n c\u00f4ng DDoS ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean m\u1ee5c ti\u00eau m\u00e0 ch\u00fang nh\u1eafm \u0111\u1ebfn trong m\u00f4 h\u00ecnh m\u1ea1ng OSI.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"41_Tan_cong_Tang_Bang_thong_Volumetric_Attacks\"><\/span>4.1. T\u1ea5n c\u00f4ng T\u1ea7ng B\u0103ng th\u00f4ng (Volumetric Attacks)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u00e2y l\u00e0 lo\u1ea1i t\u1ea5n c\u00f4ng DDoS ph\u1ed5 bi\u1ebfn nh\u1ea5t, v\u1edbi m\u1ee5c ti\u00eau duy nh\u1ea5t l\u00e0 t\u1ea1o ra m\u1ed9t lu\u1ed3ng truy c\u1eadp kh\u1ed5ng l\u1ed3 \u0111\u1ec3 l\u00e0m <strong>c\u1ea1n ki\u1ec7t ho\u00e0n to\u00e0n b\u0103ng th\u00f4ng m\u1ea1ng (bandwidth)<\/strong> c\u1ee7a m\u1ee5c ti\u00eau. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc v\u00e0o nh\u00e0 b\u1ea1n b\u1ecb b\u01a1m m\u1ed9t l\u01b0\u1ee3ng n\u01b0\u1edbc l\u1edbn h\u01a1n g\u1ea5p nhi\u1ec1u l\u1ea7n kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng, n\u00f3 s\u1ebd v\u1ee1. T\u1ea5n c\u00f4ng b\u0103ng th\u00f4ng c\u0169ng ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1, v\u1edbi quy m\u00f4 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng Gigabits m\u1ed7i gi\u00e2y (Gbps) ho\u1eb7c th\u1eadm ch\u00ed Terabits m\u1ed7i gi\u00e2y (Tbps).<\/p>\n<p style=\"text-align: justify;\"><strong>V\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>UDP Flood:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c g\u00f3i tin UDP (User Datagram Protocol) \u0111\u1ebfn c\u00e1c c\u1ed5ng (port) ng\u1eabu nhi\u00ean tr\u00ean m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau. Khi nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c g\u00f3i tin n\u00e0y, m\u00e1y ch\u1ee7 s\u1ebd c\u1ed1 g\u1eafng ki\u1ec3m tra xem c\u00f3 \u1ee9ng d\u1ee5ng n\u00e0o \u0111ang &#8220;l\u1eafng nghe&#8221; \u1edf c\u00e1c c\u1ed5ng \u0111\u00f3 kh\u00f4ng. Khi kh\u00f4ng t\u00ecm th\u1ea5y, n\u00f3 s\u1ebd g\u1eedi l\u1ea1i m\u1ed9t g\u00f3i tin &#8220;ICMP Destination Unreachable&#8221;. Vi\u1ec7c ph\u1ea3i x\u1eed l\u00fd h\u00e0ng tri\u1ec7u g\u00f3i tin \u0111\u1ebfn v\u00e0 g\u1eedi \u0111i c\u00e1c ph\u1ea3n h\u1ed3i nh\u01b0 v\u1eady s\u1ebd ti\u00eau t\u1ed1n h\u1ebft t\u00e0i nguy\u00ean v\u00e0 b\u0103ng th\u00f4ng c\u1ee7a m\u00e1y ch\u1ee7.<\/li>\n<li style=\"text-align: justify;\"><strong>DNS Amplification:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt khu\u1ebfch \u0111\u1ea1i tinh vi. K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi c\u00e1c y\u00eau c\u1ea7u truy v\u1ea5n DNS \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 DNS m\u1edf (Open DNS Server) nh\u01b0ng l\u1ea1i gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n l\u00e0 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a n\u1ea1n nh\u00e2n. M\u00e1y ch\u1ee7 DNS sau \u0111\u00f3 s\u1ebd g\u1eedi m\u1ed9t ph\u1ea3n h\u1ed3i c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n nhi\u1ec1u l\u1ea7n so v\u1edbi y\u00eau c\u1ea7u ban \u0111\u1ea7u \u0111\u1ebfn cho n\u1ea1n nh\u00e2n. B\u1eb1ng c\u00e1ch n\u00e0y, k\u1ebb t\u1ea5n c\u00f4ng \u0111\u00e3 &#8220;m\u01b0\u1ee3n tay&#8221; c\u00e1c m\u00e1y ch\u1ee7 DNS \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng l\u00ean nhi\u1ec1u l\u1ea7n, t\u1ea1o ra m\u1ed9t tr\u1eadn &#8220;l\u0169&#8221; d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3.<\/li>\n<\/ul>\n<figure id=\"attachment_10744\" aria-describedby=\"caption-attachment-10744\" style=\"width: 1230px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10744 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu.png\" alt=\"T\u1ea5n c\u00f4ng T\u1ea7ng B\u0103ng th\u00f4ng t\u1ea1o ra m\u1ed9t lu\u1ed3ng truy c\u1eadp kh\u1ed5ng l\u1ed3 \u0111\u1ec3 l\u00e0m c\u1ea1n ki\u1ec7t ho\u00e0n to\u00e0n b\u0103ng th\u00f4ng m\u1ea1ng\" width=\"1230\" height=\"691\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu.png 1230w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu-300x169.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu-1024x575.png 1024w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu-768x431.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu-150x84.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu-696x391.png 696w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-bang-thong-tao-ra-mot-luong-truy-cap-khong-lo-de-lam-can-kiet-hoan-toan-bang-thong-mang-cua-muc-tieu-1068x600.png 1068w\" sizes=\"auto, (max-width: 1230px) 100vw, 1230px\" \/><figcaption id=\"caption-attachment-10744\" class=\"wp-caption-text\">T\u1ea5n c\u00f4ng T\u1ea7ng B\u0103ng th\u00f4ng t\u1ea1o ra m\u1ed9t lu\u1ed3ng truy c\u1eadp kh\u1ed5ng l\u1ed3 \u0111\u1ec3 l\u00e0m c\u1ea1n ki\u1ec7t ho\u00e0n to\u00e0n b\u0103ng th\u00f4ng m\u1ea1ng (bandwidth) c\u1ee7a m\u1ee5c ti\u00eau<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"42_Tan_cong_Tang_Giao_thuc_Protocol_Attacks\"><\/span>4.2. T\u1ea5n c\u00f4ng T\u1ea7ng Giao th\u1ee9c (Protocol Attacks)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y kh\u00f4ng t\u1eadp trung v\u00e0o vi\u1ec7c l\u00e0m c\u1ea1n ki\u1ec7t b\u0103ng th\u00f4ng m\u00e0 nh\u1eafm v\u00e0o vi\u1ec7c <strong>l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<\/strong> nh\u01b0 m\u00e1y ch\u1ee7, t\u01b0\u1eddng l\u1eeda (firewall), b\u1ed9 c\u00e2n b\u1eb1ng t\u1ea3i (load balancer). Ch\u00fang khai th\u00e1c c\u00e1c \u0111i\u1ec3m y\u1ebfu trong c\u00e1ch c\u00e1c giao th\u1ee9c m\u1ea1ng (nh\u01b0 TCP) ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 khi\u1ebfn c\u00e1c thi\u1ebft b\u1ecb n\u00e0y ph\u1ea3i duy tr\u00ec qu\u00e1 nhi\u1ec1u k\u1ebft n\u1ed1i, d\u1eabn \u0111\u1ebfn qu\u00e1 t\u1ea3i.<\/p>\n<p style=\"text-align: justify;\"><strong>V\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>SYN Flood:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng t\u1ea7ng giao th\u1ee9c n\u1ed5i ti\u1ebfng nh\u1ea5t. N\u00f3 khai th\u00e1c quy tr\u00ecnh &#8220;b\u1eaft tay ba b\u01b0\u1edbc&#8221; (3-way handshake) c\u1ee7a giao th\u1ee9c TCP \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i (SYN -&gt; SYN-ACK -&gt; ACK). K\u1ebb t\u1ea5n c\u00f4ng s\u1ebd g\u1eedi h\u00e0ng lo\u1ea1t y\u00eau c\u1ea7u k\u1ebft n\u1ed1i (g\u00f3i tin SYN) \u0111\u1ebfn m\u00e1y ch\u1ee7. M\u00e1y ch\u1ee7 ph\u1ea3n h\u1ed3i l\u1ea1i b\u1eb1ng m\u1ed9t g\u00f3i tin SYN-ACK v\u00e0 ch\u1edd \u0111\u1ee3i g\u00f3i tin ACK cu\u1ed1i c\u00f9ng t\u1eeb k\u1ebb t\u1ea5n c\u00f4ng \u0111\u1ec3 ho\u00e0n t\u1ea5t k\u1ebft n\u1ed1i. Tuy nhi\u00ean, k\u1ebb t\u1ea5n c\u00f4ng kh\u00f4ng bao gi\u1edd g\u1eedi l\u1ea1i g\u00f3i ACK. \u0110i\u1ec1u n\u00e0y khi\u1ebfn m\u00e1y ch\u1ee7 ph\u1ea3i gi\u1eef l\u1ea1i v\u00f4 s\u1ed1 &#8220;k\u1ebft n\u1ed1i n\u1eeda v\u1eddi&#8221; (half-open connections) trong b\u1ed9 nh\u1edb, l\u00e0m \u0111\u1ea7y b\u1ea3ng tr\u1ea1ng th\u00e1i (state table) v\u00e0 kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn c\u00e1c k\u1ebft n\u1ed1i m\u1edbi t\u1eeb ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7.<\/li>\n<\/ul>\n<figure id=\"attachment_10745\" aria-describedby=\"caption-attachment-10745\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10745 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-giao-thuc-lam-can-kiet-tai-nguyen-cua-cac-thiet-bi-mang.png\" alt=\"T\u1ea5n c\u00f4ng T\u1ea7ng Giao th\u1ee9c l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng\" width=\"600\" height=\"315\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-giao-thuc-lam-can-kiet-tai-nguyen-cua-cac-thiet-bi-mang.png 600w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-giao-thuc-lam-can-kiet-tai-nguyen-cua-cac-thiet-bi-mang-300x158.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-giao-thuc-lam-can-kiet-tai-nguyen-cua-cac-thiet-bi-mang-150x79.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-10745\" class=\"wp-caption-text\">T\u1ea5n c\u00f4ng T\u1ea7ng Giao th\u1ee9c l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"43_Tan_cong_Tang_Ung_dung_Application_Layer_Attacks\"><\/span>4.3. T\u1ea5n c\u00f4ng T\u1ea7ng \u1ee8ng d\u1ee5ng (Application Layer Attacks)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 lo\u1ea1i t\u1ea5n c\u00f4ng <strong>tinh vi v\u00e0 nguy hi\u1ec3m nh\u1ea5t<\/strong>. Thay v\u00ec t\u1ea5n c\u00f4ng v\u00e0o h\u1ea1 t\u1ea7ng m\u1ea1ng, ch\u00fang nh\u1eafm tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng web (v\u00ed d\u1ee5: m\u00e1y ch\u1ee7 web Apache, IIS, ho\u1eb7c c\u00e1c m\u00e3 ngu\u1ed3n nh\u01b0 WordPress, Magento). M\u1ee5c ti\u00eau c\u1ee7a ch\u00fang l\u00e0 l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean c\u1ee7a \u1ee9ng d\u1ee5ng (CPU, RAM, c\u01a1 s\u1edf d\u1eef li\u1ec7u) b\u1eb1ng c\u00e1ch t\u1ea1o ra c\u00e1c y\u00eau c\u1ea7u tr\u00f4ng gi\u1ed1ng h\u1ec7t nh\u01b0 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng th\u1eadt.<\/p>\n<p style=\"text-align: justify;\"><strong>\u0110\u1eb7c \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>Kh\u00f3 ph\u00e1t hi\u1ec7n:<\/strong> V\u00ec c\u00e1c y\u00eau c\u1ea7u t\u1ea5n c\u00f4ng (request) tr\u00f4ng r\u1ea5t h\u1ee3p l\u1ec7, c\u00e1c h\u1ec7 th\u1ed1ng ph\u00f2ng th\u1ee7 th\u00f4ng th\u01b0\u1eddng kh\u00f3 c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c \u0111\u00e2u l\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u1eadt, \u0111\u00e2u l\u00e0 bot t\u1ea5n c\u00f4ng.<\/li>\n<li style=\"text-align: justify;\"><strong>Hi\u1ec7u qu\u1ea3 cao:<\/strong> Ch\u00fang kh\u00f4ng c\u1ea7n t\u1ea1o ra l\u01b0u l\u01b0\u1ee3ng l\u1edbn (\u0111o b\u1eb1ng Requests per Second &#8211; RPS, thay v\u00ec Gbps). Ch\u1ec9 c\u1ea7n m\u1ed9t l\u01b0\u1ee3ng request v\u1eeba ph\u1ea3i nh\u01b0ng nh\u1eafm v\u00e0o c\u00e1c ch\u1ee9c n\u0103ng &#8220;t\u1ed1n k\u00e9m&#8221; t\u00e0i nguy\u00ean c\u1ee7a website l\u00e0 \u0111\u1ee7 \u0111\u1ec3 l\u00e0m s\u1eadp d\u1ecbch v\u1ee5.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>V\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>HTTP Flood:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng botnet \u0111\u1ec3 g\u1eedi h\u00e0ng lo\u1ea1t y\u00eau c\u1ea7u HTTP (GET ho\u1eb7c POST) \u0111\u1ebfn m\u1ed9t trang web. V\u00ed d\u1ee5: li\u00ean t\u1ee5c y\u00eau c\u1ea7u t\u1ea3i m\u1ed9t file \u1ea3nh l\u1edbn (GET request) ho\u1eb7c li\u00ean t\u1ee5c g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn m\u1ed9t form \u0111\u0103ng nh\u1eadp, form t\u00ecm ki\u1ebfm (POST request). M\u1ed7i y\u00eau c\u1ea7u n\u00e0y bu\u1ed9c m\u00e1y ch\u1ee7 ph\u1ea3i x\u1eed l\u00fd, truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u, v\u00e0 ti\u00eau t\u1ed1n CPU\/RAM, d\u1eabn \u0111\u1ebfn qu\u00e1 t\u1ea3i.<\/li>\n<li style=\"text-align: justify;\"><strong>Slowloris Attack:<\/strong> M\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng &#8220;ch\u1eadm m\u00e0 ch\u1eafc&#8221;. K\u1ebb t\u1ea5n c\u00f4ng m\u1edf nhi\u1ec1u k\u1ebft n\u1ed1i \u0111\u1ebfn m\u00e1y ch\u1ee7 web, nh\u01b0ng c\u1ed1 t\u00ecnh g\u1eedi c\u00e1c y\u00eau c\u1ea7u HTTP m\u1ed9t c\u00e1ch c\u1ef1c k\u1ef3 ch\u1eadm ch\u1ea1p, kh\u00f4ng bao gi\u1edd ho\u00e0n t\u1ea5t. \u0110i\u1ec1u n\u00e0y bu\u1ed9c m\u00e1y ch\u1ee7 ph\u1ea3i gi\u1eef c\u00e1c k\u1ebft n\u1ed1i \u0111\u00f3 m\u1edf \u0111\u1ec3 ch\u1edd \u0111\u1ee3i, l\u00e0m c\u1ea1n ki\u1ec7t d\u1ea7n s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i t\u1ed1i \u0111a m\u00e0 m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 x\u1eed l\u00fd, v\u00e0 cu\u1ed1i c\u00f9ng t\u1eeb ch\u1ed1i c\u00e1c k\u1ebft n\u1ed1i m\u1edbi t\u1eeb ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7.<\/li>\n<\/ul>\n<figure id=\"attachment_10746\" aria-describedby=\"caption-attachment-10746\" style=\"width: 740px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10746 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-ung-dung-lam-can-kiet-tai-nguyen-cua-ung-dung.png\" alt=\"T\u1ea5n c\u00f4ng T\u1ea7ng \u1ee8ng d\u1ee5ng l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean c\u1ee7a \u1ee9ng d\u1ee5ng\" width=\"740\" height=\"478\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-ung-dung-lam-can-kiet-tai-nguyen-cua-ung-dung.png 740w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-ung-dung-lam-can-kiet-tai-nguyen-cua-ung-dung-300x194.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-ung-dung-lam-can-kiet-tai-nguyen-cua-ung-dung-150x97.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tan-cong-tang-ung-dung-lam-can-kiet-tai-nguyen-cua-ung-dung-696x450.png 696w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><figcaption id=\"caption-attachment-10746\" class=\"wp-caption-text\">T\u1ea5n c\u00f4ng T\u1ea7ng \u1ee8ng d\u1ee5ng l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean c\u1ee7a \u1ee9ng d\u1ee5ng (CPU, RAM, c\u01a1 s\u1edf d\u1eef li\u1ec7u)<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"5_4_Dau_hieu_nhan_biet_website_dang_bi_tan_cong_DDoS\"><\/span>5. 4 D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft website \u0111ang b\u1ecb t\u1ea5n c\u00f4ng DDoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Vi\u1ec7c ph\u00e1t hi\u1ec7n s\u1edbm m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 gi\u1ea3m thi\u1ec3u thi\u1ec7t h\u1ea1i. \u0110\u00f4i khi, c\u00e1c d\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi c\u00e1c s\u1ef1 c\u1ed1 k\u1ef9 thu\u1eadt kh\u00e1c, nh\u01b0ng n\u1ebfu ch\u00fang x\u1ea3y ra \u0111\u1ed3ng th\u1eddi, kh\u1ea3 n\u0103ng b\u1ea1n \u0111ang b\u1ecb t\u1ea5n c\u00f4ng l\u00e0 r\u1ea5t cao.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"51_Hieu_suat_website_suy_giam_nghiem_trong_hoac_khong_the_truy_cap\"><\/span>5.1. Hi\u1ec7u su\u1ea5t website suy gi\u1ea3m nghi\u00eam tr\u1ecdng ho\u1eb7c kh\u00f4ng th\u1ec3 truy c\u1eadp<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u00e2y l\u00e0 tri\u1ec7u ch\u1ee9ng r\u00f5 r\u00e0ng nh\u1ea5t m\u00e0 ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c. Trang web c\u1ee7a b\u1ea1n \u0111\u1ed9t nhi\u00ean t\u1ea3i r\u1ea5t ch\u1eadm, c\u00e1c h\u00ecnh \u1ea3nh kh\u00f4ng hi\u1ec3n th\u1ecb, ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c th\u00f4ng b\u00e1o l\u1ed7i li\u00ean t\u1ee5c nh\u01b0 <strong>503 Service Unavailable<\/strong> (D\u1ecbch v\u1ee5 kh\u00f4ng c\u00f3 s\u1eb5n), <strong>502 Bad Gateway<\/strong>, ho\u1eb7c <strong>504 Gateway Timeout<\/strong>. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra v\u00ec m\u00e1y ch\u1ee7 \u0111\u00e3 c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed9c h\u1ea1i v\u00e0 kh\u00f4ng c\u00f2n kh\u1ea3 n\u0103ng ph\u1ee5c v\u1ee5 c\u00e1c truy c\u1eadp h\u1ee3p l\u1ec7.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"52_Luong_truy_cap_mang_Network_Traffic_tang_vot_bat_thuong\"><\/span>5.2. L\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng (Network Traffic) t\u0103ng v\u1ecdt b\u1ea5t th\u01b0\u1eddng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u1ed1i v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng, \u0111\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o \u0111\u1ea7u ti\u00ean. Khi ki\u1ec3m tra c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t m\u1ea1ng, b\u1ea1n s\u1ebd th\u1ea5y m\u1ed9t bi\u1ec3u \u0111\u1ed3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng v\u1ecdt theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng m\u1ed9t c\u00e1ch b\u1ea5t th\u01b0\u1eddng m\u00e0 kh\u00f4ng c\u00f3 l\u00fd do r\u00f5 r\u00e0ng (kh\u00f4ng ph\u1ea3i do chi\u1ebfn d\u1ecbch marketing hay s\u1ef1 ki\u1ec7n \u0111\u1eb7c bi\u1ec7t).<\/p>\n<p style=\"text-align: justify;\"><strong>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng:<\/strong> Th\u01b0\u1eddng c\u00f3 c\u00e1c m\u1eabu l\u1ea1 nh\u01b0 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn truy c\u1eadp t\u1eeb m\u1ed9t d\u1ea3i IP ho\u1eb7c m\u1ed9t khu v\u1ef1c \u0111\u1ecba l\u00fd duy nh\u1ea5t, ho\u1eb7c c\u00f9ng nh\u1eafm v\u00e0o m\u1ed9t trang (endpoint) c\u1ee5 th\u1ec3 c\u1ee7a website b\u1ea1n.<\/p>\n<p style=\"text-align: justify;\"><strong>Ph\u00e2n bi\u1ec7t gi\u1eefa t\u1ea5n c\u00f4ng DDoS v\u00e0 l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p l\u1ec7 t\u0103ng \u0111\u1ed9t bi\u1ebfn: <\/strong>\u0110\u00e2y l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c. Tuy nhi\u00ean, c\u00f3 m\u1ed9t v\u00e0i \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>H\u00e0nh vi ng\u01b0\u1eddi d\u00f9ng:<\/strong> L\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p l\u1ec7 th\u01b0\u1eddng c\u00f3 c\u00e1c h\u00e0nh vi t\u1ef1 nhi\u00ean (ng\u01b0\u1eddi d\u00f9ng xem nhi\u1ec1u trang, d\u00e0nh th\u1eddi gian tr\u00ean trang, c\u00f3 t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i). Ng\u01b0\u1ee3c l\u1ea1i, l\u01b0u l\u01b0\u1ee3ng DDoS th\u01b0\u1eddng c\u00f3 t\u1ef7 l\u1ec7 tho\u00e1t (bounce rate) c\u1ef1c cao, th\u1eddi gian tr\u00ean trang g\u1ea7n nh\u01b0 b\u1eb1ng kh\u00f4ng v\u00e0 ch\u1ec9 t\u1eadp trung v\u00e0o m\u1ed9t v\u00e0i trang nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li style=\"text-align: justify;\"><strong>Ngu\u1ed3n truy c\u1eadp:<\/strong> L\u01b0u l\u01b0\u1ee3ng h\u1ee3p l\u1ec7 th\u01b0\u1eddng \u0111\u1ebfn t\u1eeb c\u00e1c ngu\u1ed3n c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c (Google, Facebook, chi\u1ebfn d\u1ecbch email&#8230;). L\u01b0u l\u01b0\u1ee3ng DDoS th\u01b0\u1eddng \u0111\u1ebfn t\u1eeb c\u00e1c \u0111\u1ecba ch\u1ec9 IP ng\u1eabu nhi\u00ean, kh\u00f4ng theo m\u1ed9t khu\u00f4n m\u1eabu logic n\u00e0o.<\/li>\n<\/ul>\n<figure id=\"attachment_10740\" aria-describedby=\"caption-attachment-10740\" style=\"width: 1187px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10740 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos.png\" alt=\"L\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng t\u0103ng v\u1ecdt b\u1ea5t th\u01b0\u1eddng l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a t\u1ea5n c\u00f4ng DDoS\" width=\"1187\" height=\"667\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos.png 1187w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos-300x169.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos-1024x575.png 1024w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos-768x432.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos-150x84.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos-696x391.png 696w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/luong-truy-cap-mang-tang-vot-bat-thuong-la-mot-trong-nhung-dau-hieu-cua-tan-cong-ddos-1068x600.png 1068w\" sizes=\"auto, (max-width: 1187px) 100vw, 1187px\" \/><figcaption id=\"caption-attachment-10740\" class=\"wp-caption-text\">L\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng t\u0103ng v\u1ecdt b\u1ea5t th\u01b0\u1eddng l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ea5u hi\u1ec7u c\u1ee7a t\u1ea5n c\u00f4ng DDoS<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"53_Tai_nguyen_may_chu_bi_can_kiet_Server_Overload\"><\/span>5.3. T\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 b\u1ecb c\u1ea1n ki\u1ec7t (Server Overload)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Song song v\u1edbi vi\u1ec7c l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng t\u0103ng, c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t tr\u00ean m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n c\u0169ng s\u1ebd \u0111\u1ea1t \u0111\u1ebfn ng\u01b0\u1ee1ng b\u00e1o \u0111\u1ed9ng. CPU s\u1ebd li\u00ean t\u1ee5c \u1edf m\u1ee9c 100%, b\u1ed9 nh\u1edb RAM b\u1ecb s\u1eed d\u1ee5ng h\u1ebft, v\u00e0 s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi t\u0103ng cao b\u1ea5t th\u01b0\u1eddng. M\u1eb7c d\u00f9 m\u1ed9t chi\u1ebfn d\u1ecbch marketing th\u00e0nh c\u00f4ng c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra t\u00ecnh tr\u1ea1ng t\u01b0\u01a1ng t\u1ef1, nh\u01b0ng s\u1ef1 qu\u00e1 t\u1ea3i do DDoS g\u00e2y ra th\u01b0\u1eddng \u0111\u1ed9t ng\u1ed9t v\u00e0 k\u00e9o d\u00e0i dai d\u1eb3ng m\u00e0 kh\u00f4ng mang l\u1ea1i b\u1ea5t k\u1ef3 gi\u00e1 tr\u1ecb kinh doanh n\u00e0o.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"54_Su_co_tren_toan_bo_mang_cuc_bo\"><\/span>5.4. S\u1ef1 c\u1ed1 tr\u00ean to\u00e0n b\u1ed9 m\u1ea1ng c\u1ee5c b\u1ed9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS quy m\u00f4 l\u1edbn kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn website m\u1ee5c ti\u00eau. N\u00f3 c\u00f3 th\u1ec3 l\u00e0m t\u1eafc ngh\u1ebdn to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n m\u1ea1ng c\u1ee7a b\u1ea1n, d\u1eabn \u0111\u1ebfn vi\u1ec7c c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c tr\u00ean c\u00f9ng m\u1ed9t m\u1ea1ng (nh\u01b0 email, FTP, ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng n\u1ed9i b\u1ed9 kh\u00e1c) c\u0169ng tr\u1edf n\u00ean ch\u1eadm ch\u1ea1p ho\u1eb7c kh\u00f4ng th\u1ec3 truy c\u1eadp.<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"6_Huong_dan_cac_bien_phap_phong_chong_tan_cong_DDoS_hieu_qua\"><\/span>6. H\u01b0\u1edbng d\u1eabn c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Ph\u00f2ng b\u1ec7nh h\u01a1n ch\u1eefa b\u1ec7nh. Vi\u1ec7c x\u00e2y d\u1ef1ng m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c ph\u00f2ng th\u1ee7 \u0111a l\u1edbp l\u00e0 c\u00e1ch ti\u1ebfp c\u1eadn th\u00f4ng minh nh\u1ea5t \u0111\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"61_Giai_phap_co_ban_Tu_trien_khai\"><\/span>6.1. Gi\u1ea3i ph\u00e1p c\u01a1 b\u1ea3n (T\u1ef1 tri\u1ec3n khai)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u00e2y l\u00e0 nh\u1eefng b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n, tuy nhi\u00ean ch\u00fang ch\u1ec9 c\u00f3 hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng quy m\u00f4 nh\u1ecf v\u00e0 kh\u00f4ng tinh vi.<\/p>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"611_Tang_cuong_bang_thong_cho_may_chu_Overprovisioning_Bandwidth\"><\/span>6.1.1. T\u0103ng c\u01b0\u1eddng b\u0103ng th\u00f4ng cho m\u00e1y ch\u1ee7 (Overprovisioning Bandwidth)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li style=\"text-align: justify;\"><strong>C\u00e1ch th\u1ee9c:<\/strong> Ch\u1ee7 \u0111\u1ed9ng mua g\u00f3i b\u0103ng th\u00f4ng l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi nhu c\u1ea7u s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y c\u1ee7a b\u1ea1n. V\u00ed d\u1ee5, n\u1ebfu website c\u1ee7a b\u1ea1n th\u01b0\u1eddng ch\u1ec9 c\u1ea7n 1Gbps b\u0103ng th\u00f4ng, b\u1ea1n c\u00f3 th\u1ec3 mua g\u00f3i 5Gbps.<\/li>\n<li style=\"text-align: justify;\"><strong>M\u1ee5c \u0111\u00edch:<\/strong> T\u1ea1o ra m\u1ed9t &#8220;v\u00f9ng \u0111\u1ec7m&#8221; \u0111\u1ec3 c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c \u0111\u1ee3t t\u1ea5n c\u00f4ng b\u0103ng th\u00f4ng nh\u1ecf m\u00e0 kh\u00f4ng l\u00e0m s\u1eadp d\u1ecbch v\u1ee5 ngay l\u1eadp t\u1ee9c.<\/li>\n<li style=\"text-align: justify;\"><strong>H\u1ea1n ch\u1ebf:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p t\u1ed1n k\u00e9m v\u00e0 kh\u00f4ng b\u1ec1n v\u1eefng. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u1ea1o ra l\u01b0u l\u01b0\u1ee3ng h\u00e0ng tr\u0103m Gbps, v\u01b0\u1ee3t xa kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u1ee7a b\u1ea5t k\u1ef3 g\u00f3i b\u0103ng th\u00f4ng th\u00f4ng th\u01b0\u1eddng n\u00e0o.<\/li>\n<\/ul>\n<figure id=\"attachment_10747\" aria-describedby=\"caption-attachment-10747\" style=\"width: 730px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10747 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tang-cuong-bang-thong-cho-may-chu-la-mot-trong-nhung-bien-phap-phong-chong-tan-cong-ddos-hieu-qua-nhung-ton-kem.png\" alt=\"T\u0103ng c\u01b0\u1eddng b\u0103ng th\u00f4ng cho m\u00e1y ch\u1ee7 l\u00e0 ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS\" width=\"730\" height=\"410\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tang-cuong-bang-thong-cho-may-chu-la-mot-trong-nhung-bien-phap-phong-chong-tan-cong-ddos-hieu-qua-nhung-ton-kem.png 730w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tang-cuong-bang-thong-cho-may-chu-la-mot-trong-nhung-bien-phap-phong-chong-tan-cong-ddos-hieu-qua-nhung-ton-kem-300x168.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tang-cuong-bang-thong-cho-may-chu-la-mot-trong-nhung-bien-phap-phong-chong-tan-cong-ddos-hieu-qua-nhung-ton-kem-150x84.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/tang-cuong-bang-thong-cho-may-chu-la-mot-trong-nhung-bien-phap-phong-chong-tan-cong-ddos-hieu-qua-nhung-ton-kem-696x391.png 696w\" sizes=\"auto, (max-width: 730px) 100vw, 730px\" \/><figcaption id=\"caption-attachment-10747\" class=\"wp-caption-text\">T\u0103ng c\u01b0\u1eddng b\u0103ng th\u00f4ng cho m\u00e1y ch\u1ee7 l\u00e0 m\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS hi\u1ec7u qu\u1ea3 nh\u01b0ng t\u1ed1n k\u00e9m<\/figcaption><\/figure>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"612_Cau_hinh_Tuong_lua_Firewall_va_Router\"><\/span>6.1.2. C\u1ea5u h\u00ecnh T\u01b0\u1eddng l\u1eeda (Firewall) v\u00e0 Router<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li style=\"text-align: justify;\"><strong>C\u00e1ch th\u1ee9c:<\/strong> S\u1eed d\u1ee5ng Danh s\u00e1ch ki\u1ec3m so\u00e1t truy c\u1eadp (Access Control Lists &#8211; ACLs) tr\u00ean router ho\u1eb7c t\u01b0\u1eddng l\u1eeda \u0111\u1ec3 thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc ch\u1eb7n truy c\u1eadp. B\u1ea1n c\u00f3 th\u1ec3 ch\u1eb7n c\u00e1c \u0111\u1ecba ch\u1ec9 IP c\u1ee5 th\u1ec3, c\u00e1c d\u1ea3i IP \u0111\u00e1ng ng\u1edd, ho\u1eb7c ch\u1eb7n c\u00e1c c\u1ed5ng (port) kh\u00f4ng c\u1ea7n thi\u1ebft.<\/li>\n<li style=\"text-align: justify;\"><strong>M\u1ee5c \u0111\u00edch:<\/strong> Ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u01a1n gi\u1ea3n t\u1eeb c\u00e1c ngu\u1ed3n \u0111\u00e3 bi\u1ebft.<\/li>\n<li style=\"text-align: justify;\"><strong>H\u1ea1n ch\u1ebf:<\/strong> T\u01b0\u1eddng l\u1eeda v\u00e0 router c\u00f3 gi\u1edbi h\u1ea1n v\u1ec1 kh\u1ea3 n\u0103ng x\u1eed l\u00fd. Ch\u00fang c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh &#8220;n\u00fat th\u1eaft c\u1ed5 chai&#8221; v\u00e0 ch\u00ednh l\u00e0 m\u1ee5c ti\u00eau c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1ea7ng giao th\u1ee9c (v\u00ed d\u1ee5: SYN Flood). H\u01a1n n\u1eefa, v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ph\u00e2n t\u00e1n t\u1eeb h\u00e0ng ng\u00e0n IP kh\u00e1c nhau, vi\u1ec7c c\u1eadp nh\u1eadt ACLs th\u1ee7 c\u00f4ng l\u00e0 b\u1ea5t kh\u1ea3 thi.<\/li>\n<\/ul>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"62_Giai_phap_nang_cao_Su_dung_dich_vu_chuyen_nghiep\"><\/span>6.2. Gi\u1ea3i ph\u00e1p n\u00e2ng cao (S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 chuy\u00ean nghi\u1ec7p)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u00e2y l\u00e0 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"621_Su_dung_dich_vu_chong_DDoS_chuyen_dung_Anti-DDoS_Scrubbing_Service\"><\/span>6.2.1. S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS chuy\u00ean d\u1ee5ng (Anti-DDoS Scrubbing Service)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li style=\"text-align: justify;\"><strong>C\u00e1ch th\u1ee9c:<\/strong> To\u00e0n b\u1ed9 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn website c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn qua m\u1ea1ng l\u01b0\u1edbi c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS. T\u1ea1i \u0111\u00e2y, h\u1ecd s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>&#8220;Trung t\u00e2m l\u1ecdc r\u1eeda&#8221; (Scrubbing Center)<\/strong> \u0111\u1ec3 ph\u00e2n t\u00edch lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li style=\"text-align: justify;\"><strong>M\u1ee5c \u0111\u00edch:<\/strong> C\u00e1c thu\u1eadt to\u00e1n th\u00f4ng minh s\u1ebd x\u00e1c \u0111\u1ecbnh v\u00e0 lo\u1ea1i b\u1ecf (drop) c\u00e1c l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i (DDoS traffic) d\u1ef1a tr\u00ean nhi\u1ec1u y\u1ebfu t\u1ed1 (h\u00e0nh vi, ch\u1eef k\u00fd, ngu\u1ed3n g\u1ed1c&#8230;). Ch\u1ec9 c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp &#8220;s\u1ea1ch&#8221; v\u00e0 h\u1ee3p l\u1ec7 (clean traffic) \u0111\u01b0\u1ee3c ph\u00e9p \u0111i ti\u1ebfp \u0111\u1ebfn m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n.<\/li>\n<li style=\"text-align: justify;\"><strong>\u01afu \u0111i\u1ec3m:<\/strong> \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 tri\u1ec7t \u0111\u1ec3 nh\u1ea5t, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u1ea3 ba lo\u1ea1i t\u1ea5n c\u00f4ng DDoS, k\u1ec3 c\u1ea3 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng quy m\u00f4 l\u1edbn h\u00e0ng Terabits m\u1ed7i gi\u00e2y.<\/li>\n<\/ul>\n<figure id=\"attachment_10742\" aria-describedby=\"caption-attachment-10742\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10742 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/su-dung-dich-vu-chong-ddos-chuyen-dung-la-phuong-phap-hieu-qua-va-triet-de-nhat-de-chong-lai-cac-cuoc-tan-cong-ddos.png\" alt=\"S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS chuy\u00ean d\u1ee5ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 tri\u1ec7t \u0111\u1ec3 nh\u1ea5t\" width=\"600\" height=\"360\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/su-dung-dich-vu-chong-ddos-chuyen-dung-la-phuong-phap-hieu-qua-va-triet-de-nhat-de-chong-lai-cac-cuoc-tan-cong-ddos.png 600w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/su-dung-dich-vu-chong-ddos-chuyen-dung-la-phuong-phap-hieu-qua-va-triet-de-nhat-de-chong-lai-cac-cuoc-tan-cong-ddos-300x180.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/su-dung-dich-vu-chong-ddos-chuyen-dung-la-phuong-phap-hieu-qua-va-triet-de-nhat-de-chong-lai-cac-cuoc-tan-cong-ddos-150x90.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-10742\" class=\"wp-caption-text\">D\u1ecbch v\u1ee5 ch\u1ed1ng DDoS chuy\u00ean d\u1ee5ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 tri\u1ec7t \u0111\u1ec3<\/figcaption><\/figure>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"622_Su_dung_Mang_phan_phoi_noi_dung_CDN_-_Content_Delivery_Network\"><\/span>6.2.2. S\u1eed d\u1ee5ng M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN &#8211; Content Delivery Network)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li style=\"text-align: justify;\"><strong>C\u00e1ch th\u1ee9c:<\/strong> CDN l\u00e0 m\u1ed9t m\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i nhi\u1ec1u v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd tr\u00ean to\u00e0n c\u1ea7u. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u1edbp proxy gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n.<\/li>\n<li style=\"text-align: justify;\"><strong>M\u1ee5c \u0111\u00edch ph\u00f2ng ch\u1ed1ng DDoS:<\/strong>\n<ul>\n<li style=\"text-align: justify;\"><strong>Ph\u00e2n t\u00e1n l\u01b0u l\u01b0\u1ee3ng:<\/strong> M\u1ea1ng l\u01b0\u1edbi kh\u1ed5ng l\u1ed3 c\u1ee7a CDN c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 v\u00e0 ph\u00e2n t\u00e1n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u0103ng th\u00f4ng quy m\u00f4 l\u1edbn, ng\u0103n ch\u00fang t\u1eadp trung v\u00e0o m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t.<\/li>\n<li style=\"text-align: justify;\"><strong>Che gi\u1ea5u IP g\u1ed1c:<\/strong> Quan tr\u1ecdng nh\u1ea5t, CDN gi\u00fap che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP th\u1eadt c\u1ee7a m\u00e1y ch\u1ee7 g\u1ed1c. K\u1ebb t\u1ea5n c\u00f4ng s\u1ebd ch\u1ec9 th\u1ea5y v\u00e0 t\u1ea5n c\u00f4ng v\u00e0o c\u00e1c \u0111\u1ecba ch\u1ec9 IP c\u1ee7a CDN, v\u1ed1n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu t\u1ea3i c\u1ef1c l\u1edbn. M\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c an to\u00e0n ph\u00eda sau.<\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: justify;\"><strong>\u01afu \u0111i\u1ec3m:<\/strong> CDN kh\u00f4ng ch\u1ec9 gi\u00fap ch\u1ed1ng DDoS m\u00e0 c\u00f2n t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang cho ng\u01b0\u1eddi d\u00f9ng, m\u1ed9t gi\u1ea3i ph\u00e1p &#8220;m\u1ed9t c\u00f4ng \u0111\u00f4i vi\u1ec7c&#8221;.<\/li>\n<\/ul>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"623_Lien_he_nha_cung_cap_dich_vu_Internet_ISP\"><\/span>6.2.3. Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li style=\"text-align: justify;\"><strong>C\u00e1ch th\u1ee9c:<\/strong> Khi ph\u00e1t hi\u1ec7n b\u1ecb t\u1ea5n c\u00f4ng, b\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u ISP c\u1ee7a m\u00ecnh can thi\u1ec7p.<\/li>\n<li style=\"text-align: justify;\"><strong>M\u1ee5c \u0111\u00edch:<\/strong> ISP c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t bi\u1ec7n ph\u00e1p g\u1ecdi l\u00e0 <strong>&#8220;Null-routing&#8221;<\/strong> hay <strong>&#8220;Blackholing&#8221;<\/strong>. H\u1ecd s\u1ebd \u0111\u1ecbnh tuy\u1ebfn to\u00e0n b\u1ed9 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a b\u1ea1n v\u00e0o m\u1ed9t &#8220;h\u1ed1 \u0111en&#8221;, t\u1ee9c l\u00e0 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n.<\/li>\n<li style=\"text-align: justify;\"><strong>H\u1ea1n ch\u1ebf:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p c\u1ef1c \u0111oan v\u00e0 ch\u1ec9 n\u00ean \u0111\u01b0\u1ee3c xem l\u00e0 gi\u1ea3i ph\u00e1p cu\u1ed1i c\u00f9ng. M\u1eb7c d\u00f9 vi\u1ec7c n\u00e0y ng\u0103n ch\u1eb7n \u0111\u01b0\u1ee3c cu\u1ed9c t\u1ea5n c\u00f4ng, nh\u01b0ng c\u0169ng \u0111\u1ed3ng th\u1eddi ch\u1eb7n c\u1ea3 nh\u1eefng truy c\u1eadp h\u1ee3p l\u1ec7, c\u00f3 ngh\u0129a l\u00e0 website c\u1ee7a b\u1ea1n c\u0169ng s\u1ebd b\u1ecb &#8220;s\u1eadp&#8221; v\u00e0 kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n<figure id=\"attachment_10739\" aria-describedby=\"caption-attachment-10739\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10739 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/lien-he-nha-cung-cap-dich-vu-internet-de-can-thiep-chi-nen-duoc-xem-la-giai-phap-cuoi-cung.png\" alt=\"Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet \u0111\u1ec3 can thi\u1ec7p l\u00e0 gi\u1ea3i ph\u00e1p cu\u1ed1i c\u00f9ng\" width=\"768\" height=\"432\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/lien-he-nha-cung-cap-dich-vu-internet-de-can-thiep-chi-nen-duoc-xem-la-giai-phap-cuoi-cung.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/lien-he-nha-cung-cap-dich-vu-internet-de-can-thiep-chi-nen-duoc-xem-la-giai-phap-cuoi-cung-300x169.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/lien-he-nha-cung-cap-dich-vu-internet-de-can-thiep-chi-nen-duoc-xem-la-giai-phap-cuoi-cung-150x84.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/lien-he-nha-cung-cap-dich-vu-internet-de-can-thiep-chi-nen-duoc-xem-la-giai-phap-cuoi-cung-696x392.png 696w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-10739\" class=\"wp-caption-text\">Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet \u0111\u1ec3 can thi\u1ec7p ch\u1ec9 n\u00ean \u0111\u01b0\u1ee3c xem l\u00e0 gi\u1ea3i ph\u00e1p cu\u1ed1i c\u00f9ng<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"7_Phai_lam_gi_NGAY_LAP_TUC_khi_bi_tan_cong_DDoS\"><\/span>7. Ph\u1ea3i l\u00e0m g\u00ec NGAY L\u1eacP T\u1ee8C khi b\u1ecb t\u1ea5n c\u00f4ng DDoS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">M\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba, vi\u1ec7c b\u1ecb t\u1ea5n c\u00f4ng v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra. Trong t\u00ecnh hu\u1ed1ng kh\u1ea9n c\u1ea5p, h\u00e3y gi\u1eef b\u00ecnh t\u0129nh v\u00e0 th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>X\u00e1c nh\u1eadn cu\u1ed9c t\u1ea5n c\u00f4ng:<\/strong> D\u1ef1a v\u00e0o c\u00e1c d\u1ea5u hi\u1ec7u \u0111\u00e3 n\u00eau \u1edf tr\u00ean (l\u01b0u l\u01b0\u1ee3ng t\u0103ng v\u1ecdt, server qu\u00e1 t\u1ea3i, website kh\u00f4ng th\u1ec3 truy c\u1eadp), h\u00e3y x\u00e1c nh\u1eadn ch\u1eafc ch\u1eafn r\u1eb1ng \u0111\u00e2y l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS ch\u1ee9 kh\u00f4ng ph\u1ea3i do l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p l\u1ec7 t\u0103ng \u0111\u1ed9t bi\u1ebfn ho\u1eb7c l\u1ed7i ph\u1ea7n c\u1ee9ng.<\/li>\n<li style=\"text-align: justify;\"><strong>Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p Hosting\/ISP:<\/strong> \u0110\u00e2y l\u00e0 b\u01b0\u1edbc h\u00e0nh \u0111\u1ed9ng \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t. H\u00e3y th\u00f4ng b\u00e1o ngay cho nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 hosting ho\u1eb7c nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1eddng truy\u1ec1n Internet c\u1ee7a b\u1ea1n. H\u1ecd c\u00f3 kinh nghi\u1ec7m v\u00e0 c\u00f4ng c\u1ee5 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ngu\u1ed3n t\u1ea5n c\u00f4ng v\u00e0 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n c\u00e1c bi\u1ec7n ph\u00e1p ng\u0103n ch\u1eb7n ban \u0111\u1ea7u.<\/li>\n<li style=\"text-align: justify;\"><strong>K\u00edch ho\u1ea1t D\u1ecbch v\u1ee5 Ch\u1ed1ng DDoS chuy\u00ean nghi\u1ec7p:<\/strong> N\u1ebfu b\u1ea1n \u0111\u00e3 \u0111\u0103ng k\u00fd s\u1eb5n m\u1ed9t d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS, \u0111\u00e2y l\u00e0 l\u00fac \u0111\u1ec3 k\u00edch ho\u1ea1t. H\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi h\u1ecd \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp qua h\u1ec7 th\u1ed1ng l\u1ecdc r\u1eeda.<\/li>\n<li style=\"text-align: justify;\"><strong>Thu th\u1eadp d\u1eef li\u1ec7u:<\/strong> C\u1ed1 g\u1eafng thu th\u1eadp c\u00e0ng nhi\u1ec1u th\u00f4ng tin v\u1ec1 cu\u1ed9c t\u1ea5n c\u00f4ng c\u00e0ng t\u1ed1t (log file, c\u00e1c \u0111\u1ecba ch\u1ec9 IP t\u1ea5n c\u00f4ng nhi\u1ec1u nh\u1ea5t, th\u1eddi gian b\u1eaft \u0111\u1ea7u&#8230;). D\u1eef li\u1ec7u n\u00e0y s\u1ebd r\u1ea5t h\u1eefu \u00edch cho vi\u1ec7c ph\u00e2n t\u00edch sau n\u00e0y v\u00e0 cung c\u1ea5p cho c\u00e1c chuy\u00ean gia b\u1ea3o m\u1eadt.<\/li>\n<li style=\"text-align: justify;\"><strong>Th\u00f4ng b\u00e1o v\u1edbi ng\u01b0\u1eddi d\u00f9ng:<\/strong> N\u1ebfu website c\u1ee7a b\u1ea1n b\u1ecb gi\u00e1n \u0111o\u1ea1n, h\u00e3y ch\u1ee7 \u0111\u1ed9ng th\u00f4ng b\u00e1o cho ng\u01b0\u1eddi d\u00f9ng\/kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n qua c\u00e1c k\u00eanh kh\u00e1c nh\u01b0 m\u1ea1ng x\u00e3 h\u1ed9i (Facebook, X,&#8230;) \u0111\u1ec3 h\u1ecd bi\u1ebft r\u1eb1ng b\u1ea1n \u0111ang g\u1eb7p s\u1ef1 c\u1ed1 v\u00e0 \u0111ang t\u00edch c\u1ef1c kh\u1eafc ph\u1ee5c.<\/li>\n<\/ul>\n<figure id=\"attachment_10738\" aria-describedby=\"caption-attachment-10738\" style=\"width: 674px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10738 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/kich-hoat-dich-vu-chong-ddos-ngay-lap-tuc-neu-ban-da-dang-ky-dich-vu-truoc-do-la-giai-phap-can-lam-khi-bi-tan-cong-ddos.png\" alt=\"K\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS ngay l\u1eadp t\u1ee9c n\u1ebfu \u0111\u00e3 \u0111\u0103ng k\u00fd tr\u01b0\u1edbc \u0111\u00f3\" width=\"674\" height=\"380\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/kich-hoat-dich-vu-chong-ddos-ngay-lap-tuc-neu-ban-da-dang-ky-dich-vu-truoc-do-la-giai-phap-can-lam-khi-bi-tan-cong-ddos.png 674w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/kich-hoat-dich-vu-chong-ddos-ngay-lap-tuc-neu-ban-da-dang-ky-dich-vu-truoc-do-la-giai-phap-can-lam-khi-bi-tan-cong-ddos-300x169.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/kich-hoat-dich-vu-chong-ddos-ngay-lap-tuc-neu-ban-da-dang-ky-dich-vu-truoc-do-la-giai-phap-can-lam-khi-bi-tan-cong-ddos-150x85.png 150w\" sizes=\"auto, (max-width: 674px) 100vw, 674px\" \/><figcaption id=\"caption-attachment-10738\" class=\"wp-caption-text\">K\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS ngay l\u1eadp t\u1ee9c n\u1ebfu b\u1ea1n \u0111\u00e3 \u0111\u0103ng k\u00fd d\u1ecbch v\u1ee5 tr\u01b0\u1edbc \u0111\u00f3 l\u00e0 gi\u1ea3i ph\u00e1p c\u1ea7n l\u00e0m khi b\u1ecb t\u1ea5n c\u00f4ng DDoS<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"8_VNPT_Anti-DDoS_-_Giai_phap_bao_ve_chuyen_nghiep_cho_doanh_nghiep_Viet\"><\/span>8. VNPT Anti-DDoS &#8211; Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 chuy\u00ean nghi\u1ec7p cho doanh nghi\u1ec7p Vi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ec3 ch\u1ee7 \u0111\u1ed9ng b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc nh\u1eefng m\u1ed1i \u0111e d\u1ecda ng\u00e0y c\u00e0ng tinh vi, vi\u1ec7c trang b\u1ecb m\u1ed9t gi\u1ea3i ph\u00e1p chuy\u00ean nghi\u1ec7p l\u00e0 v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft. D\u1ecbch v\u1ee5 <a href=\"https:\/\/smartcloud.vn\/vi\/home\/antiddos\" target=\"_blank\" rel=\"noopener\"><strong><u>VNPT Anti-DDoS<\/u><\/strong><\/a><u> <\/u>\u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n, \u0111\u1ea3m b\u1ea3o duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh s\u1eb5n s\u00e0ng cho d\u1ecbch v\u1ee5 c\u1ee7a doanh nghi\u1ec7p.<\/p>\n<p style=\"text-align: justify;\"><strong>\u0110i\u1ec3m m\u1ea1nh c\u1ee7a gi\u1ea3i ph\u00e1p VNPT Anti-DDoS:<\/strong><\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong>S\u1ee9c m\u1ea1nh t\u1eeb nh\u00e0 cung c\u1ea5p Internet (ISP) h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam:<\/strong> V\u1edbi v\u1ecb th\u1ebf l\u00e0 ISP l\u1edbn nh\u1ea5t, VNPT c\u00f3 t\u1ea7m nh\u00ecn bao qu\u00e1t v\u00e0 s\u00e2u s\u1eafc nh\u1ea5t \u0111\u1ed1i v\u1edbi lu\u1ed3ng d\u1eef li\u1ec7u Internet t\u1ea1i Vi\u1ec7t Nam. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p h\u1ec7 th\u1ed1ng Anti-DDoS c\u1ee7a VNPT ph\u00e1t hi\u1ec7n c\u00e1c d\u1ea5u hi\u1ec7u t\u1ea5n c\u00f4ng t\u1eeb r\u1ea5t s\u1edbm, ngay t\u1ea1i l\u1edbp m\u1ea1ng l\u00f5i (core network). Thay v\u00ec ch\u1edd \u0111\u1ee3i l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i t\u1ea5n c\u00f4ng \u0111\u1ebfn t\u1eadn m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n, gi\u1ea3i ph\u00e1p c\u1ee7a VNPT c\u00f3 kh\u1ea3 n\u0103ng ng\u0103n ch\u1eb7n ch\u00fang t\u1eeb xa, gi\u1ea3m thi\u1ec3u t\u1ed1i \u0111a r\u1ee7i ro.<\/li>\n<li style=\"text-align: justify;\"><strong>H\u1ea1 t\u1ea7ng Trung t\u00e2m l\u1ecdc r\u1eeda (Scrubbing Center) hi\u1ec7n \u0111\u1ea1i:<\/strong> Khi ph\u00e1t hi\u1ec7n t\u1ea5n c\u00f4ng, l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c Trung t\u00e2m l\u1ecdc r\u1eeda c\u1ee7a VNPT. C\u00e1c trung t\u00e2m n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1eb7t ngay trong nh\u1eefng <strong>Data Center \u0111\u1ea1t chu\u1ea9n Tier III<\/strong> nh\u01b0 IDC H\u00f2a L\u1ea1c, IDC Nam Th\u0103ng Long, s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng chuy\u00ean d\u1ee5ng v\u00e0 thu\u1eadt to\u00e1n th\u00f4ng minh \u0111\u1ec3 ph\u00e2n t\u00edch, &#8220;l\u00e0m s\u1ea1ch&#8221; l\u01b0u l\u01b0\u1ee3ng. Ch\u1ec9 c\u00f3 nh\u1eefng truy c\u1eadp h\u1ee3p l\u1ec7 m\u1edbi \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 m\u00e1y ch\u1ee7, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a b\u1ea1n kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li style=\"text-align: justify;\"><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u1ee1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng quy m\u00f4 l\u1edbn (Terabit-scale):<\/strong> M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng b\u0103ng th\u00f4ng l\u1edbn c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng l\u00e0m s\u1eadp c\u00e1c h\u1ec7 th\u1ed1ng ph\u00f2ng th\u1ee7 th\u00f4ng th\u01b0\u1eddng. Tuy nhi\u00ean, VNPT s\u1edf h\u1eefu h\u1ea1 t\u1ea7ng m\u1ea1ng l\u01b0\u1edbi kh\u1ed5ng l\u1ed3 v\u1edbi t\u1ed5ng dung l\u01b0\u1ee3ng k\u1ebft n\u1ed1i qu\u1ed1c t\u1ebf l\u00ean \u0111\u1ebfn <strong>11 Tbps<\/strong> v\u00e0 trong n\u01b0\u1edbc l\u00e0 <strong>5,682 Gbps<\/strong>. N\u0103ng l\u1ef1c b\u0103ng th\u00f4ng kh\u1ed5ng l\u1ed3 n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t &#8220;t\u1ea5m \u0111\u1ec7m&#8221; c\u1ef1c l\u1edbn, cho ph\u00e9p h\u1ea5p th\u1ee5 v\u00e0 x\u1eed l\u00fd nh\u1eefng cu\u1ed9c t\u1ea5n c\u00f4ng volumetric d\u1eef d\u1ed9i nh\u1ea5t m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 \u1ed5n \u0111\u1ecbnh chung c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li style=\"text-align: justify;\"><strong>\u0110\u1ed9i ng\u0169 chuy\u00ean gia an ninh m\u1ea1ng 24\/7 t\u1ea1i Vi\u1ec7t Nam:<\/strong> Khi s\u1ef1 c\u1ed1 x\u1ea3y ra, vi\u1ec7c \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u00e1c chuy\u00ean gia ngay t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. VNPT v\u1eadn h\u00e0nh <strong>Trung t\u00e2m \u0110i\u1ec1u h\u00e0nh An ninh (SOC)<\/strong> v\u1edbi \u0111\u1ed9i ng\u0169 k\u1ef9 s\u01b0, chuy\u00ean gia an ninh m\u1ea1ng ng\u01b0\u1eddi Vi\u1ec7t l\u00e0m vi\u1ec7c 24\/7. H\u1ecd kh\u00f4ng ch\u1ec9 am hi\u1ec3u c\u00f4ng ngh\u1ec7 m\u00e0 c\u00f2n th\u1ea5u hi\u1ec3u b\u1ed1i c\u1ea3nh m\u1ea1ng t\u1ea1i Vi\u1ec7t Nam, \u0111\u1ea3m b\u1ea3o m\u1ecdi s\u1ef1 c\u1ed1 \u0111\u1ec1u \u0111\u01b0\u1ee3c ti\u1ebfp nh\u1eadn v\u00e0 x\u1eed l\u00fd nhanh ch\u00f3ng, ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<figure id=\"attachment_10748\" aria-describedby=\"caption-attachment-10748\" style=\"width: 1920px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10748 size-full\" src=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet.png\" alt=\"VNPT Anti-DDoS - Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 chuy\u00ean nghi\u1ec7p cho doanh nghi\u1ec7p Vi\u1ec7t\" width=\"1920\" height=\"650\" srcset=\"https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet.png 1920w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-300x102.png 300w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-1024x347.png 1024w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-768x260.png 768w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-1536x520.png 1536w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-150x51.png 150w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-696x236.png 696w, https:\/\/onesme.vn\/blog\/wp-content\/uploads\/2025\/09\/vnpt-anti-ddos-giai-phap-bao-ve-chuyen-nghiep-cho-doanh-nghiep-viet-1068x362.png 1068w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption id=\"caption-attachment-10748\" class=\"wp-caption-text\">VNPT Anti-DDoS &#8211; Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 chuy\u00ean nghi\u1ec7p cho doanh nghi\u1ec7p Vi\u1ec7t<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><em>B\u00e0i vi\u1ebft \u0111\u00e3 gi\u1ea3i \u0111\u00e1p chi ti\u1ebft <\/em><strong><em>t\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec <\/em><\/strong><em>c\u0169ng nh\u01b0 c\u00e1c th\u00f4ng tin h\u1eefu \u00edch kh\u00e1c.<\/em><em> \u0110\u00e2y l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda th\u1ef1c t\u1ebf, c\u00f3 th\u1ec3 g\u00e2y thi\u1ec7t h\u1ea1i n\u1eb7ng n\u1ec1 v\u1ec1 t\u00e0i ch\u00ednh v\u00e0 uy t\u00edn cho b\u1ea5t k\u1ef3 t\u1ed5 ch\u1ee9c n\u00e0o. Vi\u1ec7c ch\u1ee7 \u0111\u1ed9ng x\u00e2y d\u1ef1ng c\u00e1c ph\u01b0\u01a1ng \u00e1n ph\u00f2ng th\u1ee7 \u0111a l\u1edbp thay v\u00ec ch\u1edd \u0111\u1ee3i s\u1ef1 c\u1ed1 x\u1ea3y ra l\u00e0 \u0111i\u1ec1u v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng v\u00e0 trang b\u1ecb c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ph\u00f9 h\u1ee3p nh\u01b0 VNPT Anti-DDoS , b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u \u0111\u00e1ng k\u1ec3 r\u1ee7i ro v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho t\u00e0i s\u1ea3n s\u1ed1 c\u1ee7a m\u00ecnh.<\/em><\/p>\n<p style=\"text-align: justify;\"><em>\u0110\u1ec3 t\u00ecm hi\u1ec3u chi ti\u1ebft c\u0169ng nh\u01b0 c\u00f3 nhu c\u1ea7u s\u1eed d\u1ee5ng VNPT Anti-DDoS, b\u1ea1n vui l\u00f2ng li\u00ean h\u1ec7:<\/em><\/p>\n<ul>\n<li style=\"text-align: justify;\"><strong><em>Hotline: <\/em><\/strong><em>1800.1260 (Mi\u1ec5n ph\u00ed 24\/7)<\/em><\/li>\n<li style=\"text-align: justify;\"><strong><em>Website: <\/em><\/strong><a href=\"https:\/\/vnpt.vn\/\" target=\"_blank\" rel=\"noopener\"><em><u>https:\/\/vnpt.vn\/<\/u><\/em><\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea5n c\u00f4ng DDoS l\u00e0 h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u1eb1m l\u00e0m qu\u00e1 t\u1ea3i v\u00e0 \u0111\u00e1nh s\u1eadp m\u1ed9t website ho\u1eb7c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t lu\u1ed3ng truy c\u1eadp gi\u1ea3 m\u1ea1o kh\u1ed5ng l\u1ed3 t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau. Trong b\u1ed1i c\u1ea3nh m\u1ecdi ho\u1ea1t \u0111\u1ed9ng kinh doanh \u0111\u1ec1u ph\u1ee5 thu\u1ed9c v\u00e0o Internet, vi\u1ec7c hi\u1ec3u [&hellip;]<\/p>\n","protected":false},"author":44,"featured_media":10749,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":{"0":"post-10736","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tin-tuc-su-kien"},"_links":{"self":[{"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/posts\/10736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/users\/44"}],"replies":[{"embeddable":true,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/comments?post=10736"}],"version-history":[{"count":3,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/posts\/10736\/revisions"}],"predecessor-version":[{"id":11112,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/posts\/10736\/revisions\/11112"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/media\/10749"}],"wp:attachment":[{"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/media?parent=10736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/categories?post=10736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onesme.vn\/blog\/wp-json\/wp\/v2\/tags?post=10736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}