{"id":5942,"date":"2024-06-07T08:32:41","date_gmt":"2024-06-07T08:32:41","guid":{"rendered":"https:\/\/zynoo.com\/blog\/ddos-protection\/"},"modified":"2026-11-02T23:14:19","modified_gmt":"2026-11-02T23:14:19","slug":"ddos-protection","status":"publish","type":"post","link":"https:\/\/zynoo.com\/blog\/vi\/ddos-protection\/","title":{"rendered":"B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i, c\u00e1c l\u1edbp &amp; l\u1ee3i \u00edch"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" id=\"h-\"><strong>Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS<\/strong> gi\u00fap website, \u1ee9ng d\u1ee5ng, d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef VPS v\u00e0 m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng lu\u00f4n ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n v\u00e0 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i nh\u1eb1m g\u00e2y qu\u00e1 t\u1ea3i.<\/p>\n\n<p class=\"wp-block-paragraph\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS) c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 ngay c\u1ea3 khi m\u00e1y ch\u1ee7 v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. Bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 hi\u1ec7u qu\u1ea3 gi\u00fap gi\u1ea3m nguy c\u01a1 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, s\u1ef1 c\u1ed1 hi\u1ec7u su\u1ea5t v\u00e0 t\u1ed5n th\u1ea5t kinh doanh, d\u00f9 kh\u00f4ng gi\u1ea3i ph\u00e1p n\u00e0o c\u00f3 th\u1ec3 b\u1ea3o \u0111\u1ea3m kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m ho\u00e0n to\u00e0n.<\/p>\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS, c\u0169ng nh\u01b0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1ea5n c\u00f4ng \u1edf c\u1ea5p \u0111\u1ed9 m\u1ea1ng v\u00e0 c\u1ea5p \u0111\u1ed9 \u1ee9ng d\u1ee5ng, c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ch\u1ecdn bi\u1ec7n ph\u00e1p ph\u00f2ng v\u1ec7 ph\u00f9 h\u1ee3p cho h\u1ea1 t\u1ea7ng c\u1ee7a m\u00ecnh.<\/p>\n\n<h2 id=\"h-what-is-ddos-protection\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bao_ve_chong_DDoS_la_gi\"><\/span>B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS l\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 v\u00e0 quy tr\u00ecnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u1eadn di\u1ec7n, h\u1ea5p th\u1ee5 v\u00e0 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n.<\/p>\n\n<p class=\"wp-block-paragraph\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS th\u01b0\u1eddng c\u00f3 nhi\u1ec1u thi\u1ebft b\u1ecb g\u1eedi l\u01b0\u1ee3ng l\u1edbn l\u01b0u l\u01b0\u1ee3ng ho\u1eb7c y\u00eau c\u1ea7u \u0111\u1ebfn m\u1ee5c ti\u00eau. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y c\u00f3 th\u1ec3 thu\u1ed9c m\u1ed9t botnet, t\u1ee9c m\u1ea1ng l\u01b0\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng b\u1ecb x\u00e2m nh\u1eadp v\u00e0 n\u1eb1m d\u01b0\u1edbi quy\u1ec1n ki\u1ec3m so\u00e1t c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng.<\/p>\n\n<p class=\"wp-block-paragraph\">M\u1ee5c ti\u00eau th\u01b0\u1eddng l\u00e0 l\u00e0m c\u1ea1n ki\u1ec7t b\u0103ng th\u00f4ng, s\u1ed1 k\u1ebft n\u1ed1i ho\u1eb7c t\u00e0i nguy\u00ean \u0111i\u1ec7n to\u00e1n, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7 kh\u00f4ng th\u1ec3 truy c\u1eadp d\u1ecbch v\u1ee5.<\/p>\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u1ee5c ti\u00eau c\u00f3 th\u1ec3 bao g\u1ed3m website, API, c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c cung c\u1ea5p qua d\u1ecbch v\u1ee5 c\u00f4ng khai, m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c c\u00f3 th\u1ec3 truy c\u1eadp t\u1eeb internet.<\/p>\n\n<h2 id=\"h-how-does-ddos-protection-work\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Giai_phap_bao_ve_chong_DDoS_hoat_dong_nhu_the_nao\"><\/span>Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">H\u1ec7 th\u1ed1ng gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS ph\u00e2n t\u00edch l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn \u0111\u1ec3 ph\u00e2n bi\u1ec7t ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ng\u1edd v\u1edbi c\u00e1c y\u00eau c\u1ea7u h\u1ee3p l\u1ec7.<\/p>\n\n<p class=\"wp-block-paragraph\">M\u1ed9t h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 \u0111i\u1ec3n h\u00ecnh s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt:<\/p>\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Gi\u00e1m s\u00e1t l\u01b0u l\u01b0\u1ee3ng:<\/strong> Theo d\u00f5i m\u1ee9c s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng, t\u1ed1c \u0111\u1ed9 truy\u1ec1n g\u00f3i tin, c\u00e1c k\u1ebft n\u1ed1i v\u00e0 m\u1eabu h\u00ecnh y\u00eau c\u1ea7u.<\/li>\n\n\n\n<li><strong>Ph\u00e1t hi\u1ec7n t\u1ea5n c\u00f4ng:<\/strong> X\u00e1c \u0111\u1ecbnh l\u01b0u l\u01b0\u1ee3ng t\u0103ng b\u1ea5t th\u01b0\u1eddng ho\u1eb7c h\u00e0nh vi li\u00ean quan \u0111\u1ebfn c\u00e1c ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng \u0111\u00e3 bi\u1ebft.<\/li>\n\n\n\n<li><strong>L\u1ecdc l\u01b0u l\u01b0\u1ee3ng:<\/strong> Ch\u1eb7n, y\u00eau c\u1ea7u x\u00e1c minh ho\u1eb7c gi\u1edbi h\u1ea1n c\u00e1c y\u00eau c\u1ea7u \u0111\u00e1ng ng\u1edd.<\/li>\n\n\n\n<li><strong>L\u1ecdc s\u1ea1ch l\u01b0u l\u01b0\u1ee3ng:<\/strong> T\u00e1ch l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i kh\u1ecfi l\u01b0u l\u01b0\u1ee3ng h\u1ee3p l\u1ec7, th\u01b0\u1eddng b\u1eb1ng h\u1ea1 t\u1ea7ng m\u1ea1ng th\u01b0\u1ee3ng ngu\u1ed3n.<\/li>\n\n\n\n<li><strong>Gi\u1ea3m thi\u1ec3u li\u00ean t\u1ee5c:<\/strong> \u0110i\u1ec1u ch\u1ec9nh bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 khi cu\u1ed9c t\u1ea5n c\u00f4ng thay \u0111\u1ed5i.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\">V\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng quy m\u00f4 l\u1edbn, vi\u1ec7c l\u1ecdc l\u01b0u l\u01b0\u1ee3ng tr\u01b0\u1edbc khi l\u01b0u l\u01b0\u1ee3ng \u0111\u1ebfn m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng. T\u01b0\u1eddng l\u1eeda c\u1ee5c b\u1ed9 kh\u00f4ng th\u1ec3 kh\u00f4i ph\u1ee5c k\u1ebft n\u1ed1i khi \u0111\u01b0\u1eddng truy\u1ec1n m\u1ea1ng \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00e3 b\u1ecb qu\u00e1 t\u1ea3i.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/06\/ddos-attack-prevention-zynoo-1024x576.webp\" alt=\"ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng ddos zynoo\" class=\"wp-image-5907\" srcset=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/06\/ddos-attack-prevention-zynoo-1024x576.webp 1024w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/06\/ddos-attack-prevention-zynoo-300x169.webp 300w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/06\/ddos-attack-prevention-zynoo-768x432.webp 768w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/06\/ddos-attack-prevention-zynoo-1536x864.webp 1536w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/06\/ddos-attack-prevention-zynoo.webp 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h2 id=\"h-layer-3-4-vs-layer-7-ddos-attacks\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tan_cong_DDoS_Lop_34_so_voi_Lop_7\"><\/span>T\u1ea5n c\u00f4ng DDoS L\u1edbp 3\/4 so v\u1edbi L\u1edbp 7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">T\u1ea5n c\u00f4ng DDoS c\u00f3 th\u1ec3 nh\u1eafm v\u00e0o c\u00e1c l\u1edbp kh\u00e1c nhau trong qu\u00e1 tr\u00ecnh truy\u1ec1n th\u00f4ng m\u1ea1ng. Hi\u1ec3u nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng v\u00ec m\u1ed7i lo\u1ea1i c\u1ea7n bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 ph\u00f9 h\u1ee3p.<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>L\u1edbp<\/th><th>V\u00ed d\u1ee5 v\u1ec1 t\u1ea5n c\u00f4ng<\/th><th>M\u1ee5c ti\u00eau ch\u00ednh<\/th><\/tr><tr><td><strong>L\u1edbp 3 \u2014 M\u1ea1ng<\/strong><\/td><td>T\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp ICMP<\/td><td>B\u0103ng th\u00f4ng m\u1ea1ng v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd g\u00f3i tin<\/td><\/tr><tr><td><strong>L\u1edbp 4 \u2014 Giao v\u1eadn<\/strong><\/td><td>T\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp TCP SYN, t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp UDP<\/td><td>C\u00e1c k\u1ebft n\u1ed1i, d\u1ecbch v\u1ee5 giao v\u1eadn v\u00e0 dung l\u01b0\u1ee3ng m\u1ea1ng<\/td><\/tr><tr><td><strong>L\u1edbp 7 \u2014 \u1ee8ng d\u1ee5ng<\/strong><\/td><td>T\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp HTTP, g\u1eedi y\u00eau c\u1ea7u API l\u1eb7p \u0111i l\u1eb7p l\u1ea1i<\/td><td>M\u00e1y ch\u1ee7 web, \u1ee9ng d\u1ee5ng v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h3 id=\"h-layer-3-and-layer-4-protection\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bao_ve_o_Lop_3_va_Lop_4\"><\/span>B\u1ea3o v\u1ec7 \u1edf L\u1edbp 3 v\u00e0 L\u1edbp 4<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng L\u1edbp 3\/4 th\u01b0\u1eddng nh\u1eafm v\u00e0o dung l\u01b0\u1ee3ng m\u1ea1ng ho\u1eb7c t\u00e0i nguy\u00ean x\u1eed l\u00fd k\u1ebft n\u1ed1i.<\/p>\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp UDP quy m\u00f4 l\u1edbn c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i \u0111\u01b0\u1eddng truy\u1ec1n m\u1ea1ng, trong khi t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp TCP SYN c\u00f3 th\u1ec3 l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean li\u00ean quan \u0111\u1ebfn k\u1ebft n\u1ed1i.<\/p>\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS \u1edf c\u1ea5p \u0111\u1ed9 m\u1ea1ng gi\u00fap ph\u00e1t hi\u1ec7n v\u00e0 l\u1ecdc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y tr\u01b0\u1edbc khi ch\u00fang l\u00e0m gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef.<\/p>\n\n<h3 id=\"h-layer-7-protection\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bao_ve_o_Lop_7\"><\/span>B\u1ea3o v\u1ec7 \u1edf L\u1edbp 7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">T\u1ea5n c\u00f4ng L\u1edbp 7 nh\u1eafm v\u00e0o \u1ee9ng d\u1ee5ng thay v\u00ec ch\u1ec9 l\u00e0m qu\u00e1 t\u1ea3i b\u0103ng th\u00f4ng m\u1ea1ng.<\/p>\n\n<p class=\"wp-block-paragraph\">K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 li\u00ean t\u1ee5c y\u00eau c\u1ea7u m\u1ed9t trang web ti\u00eau t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean, m\u1ed9t \u0111i\u1ec3m cu\u1ed1i t\u00ecm ki\u1ebfm ho\u1eb7c m\u1ed9t thao t\u00e1c API.<\/p>\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng y\u00eau c\u1ea7u n\u00e0y c\u00f3 th\u1ec3 gi\u1ed1ng l\u01b0u l\u01b0\u1ee3ng h\u1ee3p l\u1ec7, khi\u1ebfn t\u1ea5n c\u00f4ng \u1edf c\u1ea5p \u0111\u1ed9 \u1ee9ng d\u1ee5ng kh\u00f3 ph\u00e2n bi\u1ec7t v\u1edbi ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng h\u01a1n.<\/p>\n\n<p class=\"wp-block-paragraph\">C\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 bao g\u1ed3m ph\u00e2n t\u00edch l\u01b0u l\u01b0\u1ee3ng HTTP, gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 theo \u0111\u1eb7c \u0111i\u1ec3m \u1ee9ng d\u1ee5ng, ph\u00e1t hi\u1ec7n bot v\u00e0 \u00e1p d\u1ee5ng quy t\u1eafc c\u1ee7a t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00e1c bi\u1ec7t ch\u00ednh:<\/strong> B\u1ea3o v\u1ec7 \u1edf L\u1edbp 3\/4 t\u1eadp trung v\u00e0o l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng v\u00e0 giao v\u1eadn, trong khi b\u1ea3o v\u1ec7 \u1edf L\u1edbp 7 xem x\u00e9t h\u00e0nh vi c\u1ee7a \u1ee9ng d\u1ee5ng. Website c\u00f3 th\u1ec3 c\u1ea7n c\u1ea3 hai.<\/p>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\">Nginx c\u00f3 t\u00ednh n\u0103ng gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 t\u00edch h\u1ee3p, gi\u00fap gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u HTTP qu\u00e1 m\u1ee9c tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. H\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/zynoo.com\/blog\/vi\/nginx-rate-limiting\/\">c\u00e1ch c\u1ea5u h\u00ecnh gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 trong Nginx<\/a> gi\u1ea3i th\u00edch c\u00e1ch thi\u1ebft l\u1eadp gi\u1edbi h\u1ea1n y\u00eau c\u1ea7u, ki\u1ec3m th\u1eed an to\u00e0n v\u00e0 gi\u1ea3m l\u01b0u l\u01b0\u1ee3ng g\u00e2y h\u1ea1i m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m b\u1ed5 sung.<\/p>\n<\/div>\n\n<h2 id=\"h-why-ddos-protection-matters-for-vps-and-dedicated-servers\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Vi_sao_VPS_va_may_chu_chuyen_dung_can_duoc_bao_ve_chong_DDoS\"><\/span>V\u00ec sao VPS v\u00e0 m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">C\u1ea3 VPS v\u00e0 m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng \u0111\u1ec1u c\u00f3 th\u1ec3 b\u1ecb t\u1ea5n c\u00f4ng DDoS, d\u00f9 c\u1ea5u h\u00ecnh t\u00e0i nguy\u00ean c\u1ee7a ch\u00fang kh\u00e1c nhau.<\/p>\n\n<p class=\"wp-block-paragraph\">VPS \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 c\u00e1c t\u00e0i nguy\u00ean \u1ea3o, bao g\u1ed3m CPU, RAM v\u00e0 dung l\u01b0\u1ee3ng m\u1ea1ng. L\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i qu\u00e1 l\u1edbn c\u00f3 th\u1ec3 l\u00e0m c\u1ea1n ki\u1ec7t c\u00e1c t\u00e0i nguy\u00ean n\u00e0y ho\u1eb7c g\u00e2y gi\u00e1n \u0111o\u1ea1n m\u1ea1ng xung quanh.<\/p>\n\n<p class=\"wp-block-paragraph\">M\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng cung c\u1ea5p ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd d\u00e0nh ri\u00eang, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng gi\u00fap m\u00e1y ch\u1ee7 mi\u1ec5n nhi\u1ec5m v\u1edbi t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i m\u1ea1ng ho\u1eb7c qu\u00e1 t\u1ea3i \u1ee9ng d\u1ee5ng.<\/p>\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 m\u00e1y ch\u1ee7 m\u1ea1nh c\u0169ng c\u00f3 th\u1ec3 kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c khi k\u1ebft n\u1ed1i th\u01b0\u1ee3ng ngu\u1ed3n b\u1ecb qu\u00e1 t\u1ea3i.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi doanh nghi\u1ec7p, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 bao g\u1ed3m giao d\u1ecbch th\u1ea5t b\u1ea1i, d\u1ecbch v\u1ee5 b\u1ecb gi\u00e1n \u0111o\u1ea1n, kh\u00e1ch h\u00e0ng kh\u00f4ng h\u00e0i l\u00f2ng v\u00e0 doanh thu b\u1ecb m\u1ea5t.<\/p>\n\n<p class=\"wp-block-paragraph\">V\u00ec v\u1eady, vi\u1ec7c gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng \u0111\u1ed1i v\u1edbi n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, \u1ee9ng d\u1ee5ng SaaS, m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i, API v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c cho ph\u00e9p truy c\u1eadp c\u00f4ng khai.<\/p>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\">M\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i c\u00f4ng khai c\u00f3 th\u1ec3 \u0111\u1eb7c bi\u1ec7t d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c \u0111\u1ee3t t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp l\u01b0u l\u01b0\u1ee3ng, l\u00e0m gi\u00e1n \u0111o\u1ea1n tr\u00f2 ch\u01a1i v\u00e0 ng\u0103n ng\u01b0\u1eddi ch\u01a1i k\u1ebft n\u1ed1i. N\u1ebfu b\u1ea1n d\u1ef1 \u0111\u1ecbnh t\u1ef1 l\u01b0u tr\u1eef m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i, <a href=\"https:\/\/zynoo.com\/blog\/vi\/game-server-hosting\/\">h\u01b0\u1edbng d\u1eabn l\u01b0u tr\u1eef m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i<\/a> c\u1ee7a ch\u00fang t\u00f4i gi\u1ea3i th\u00edch nh\u1eefng y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc v\u1ec1 ph\u1ea7n c\u1ee9ng, m\u1ea1ng v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n<\/div>\n\n<h2 id=\"h-ddos-protection-vs-firewall-vs-waf\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bao_ve_chong_DDoS_tuong_lua_va_WAF_khac_nhau_nhu_the_nao\"><\/span>B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS, t\u01b0\u1eddng l\u1eeda v\u00e0 WAF kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u00f4ng ngh\u1ec7 n\u00e0y b\u1ed5 tr\u1ee3 cho nhau nh\u01b0ng ph\u1ee5c v\u1ee5 nh\u1eefng m\u1ee5c \u0111\u00edch kh\u00e1c nhau.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS:<\/strong> Ph\u00e1t hi\u1ec7n v\u00e0 l\u1ecdc c\u00e1c \u0111\u1ee3t t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp l\u01b0u l\u01b0\u1ee3ng, th\u01b0\u1eddng b\u1eb1ng h\u1ea1 t\u1ea7ng m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng l\u1edbn.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>T\u01b0\u1eddng l\u1eeda m\u1ea1ng:<\/strong> Ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng theo \u0111\u1ecba ch\u1ec9 IP, c\u1ed5ng, giao th\u1ee9c v\u00e0 c\u00e1c quy t\u1eafc kh\u00e1c. T\u01b0\u1eddng l\u1eeda gi\u00fap h\u1ea1n ch\u1ebf vi\u1ec7c \u0111\u1ec3 h\u1ec7 th\u1ed1ng ti\u1ebfp x\u00fac kh\u00f4ng c\u1ea7n thi\u1ebft v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda, nh\u01b0ng kh\u00f4ng th\u1ec3 t\u1ef1 x\u1eed l\u00fd m\u1ecdi cu\u1ed9c t\u1ea5n c\u00f4ng quy m\u00f4 l\u1edbn.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>T\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web (WAF):<\/strong> Ki\u1ec3m tra c\u00e1c y\u00eau c\u1ea7u HTTP\/HTTPS v\u00e0 \u00e1p d\u1ee5ng quy t\u1eafc b\u1ea3o m\u1eadt d\u1ef1a tr\u00ean \u0111\u1eb7c \u0111i\u1ec3m \u1ee9ng d\u1ee5ng. WAF c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed9c h\u1ea1i v\u00e0 m\u1ed9t s\u1ed1 cu\u1ed9c t\u1ea5n c\u00f4ng DDoS L\u1edbp 7.<\/p>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\">Proxy ng\u01b0\u1ee3c nh\u01b0 Nginx c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m t\u1eadp trung \u0111\u1ec3 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t y\u00eau c\u1ea7u tr\u01b0\u1edbc khi l\u01b0u l\u01b0\u1ee3ng \u0111\u1ebfn \u1ee9ng d\u1ee5ng web. N\u1ebfu b\u1ea1n ch\u01b0a quen v\u1edbi c\u00e1ch thi\u1ebft l\u1eadp n\u00e0y, <a href=\"https:\/\/zynoo.com\/blog\/vi\/nginx-reverse-proxy-ubuntu\/\">h\u01b0\u1edbng d\u1eabn thi\u1ebft l\u1eadp proxy ng\u01b0\u1ee3c Nginx<\/a> c\u1ee7a ch\u00fang t\u00f4i gi\u1ea3i th\u00edch c\u00e1ch c\u1ea5u h\u00ecnh chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u tr\u00ean Ubuntu. Tuy nhi\u00ean, ch\u1ec9 d\u00f9ng proxy ng\u01b0\u1ee3c kh\u00f4ng th\u1ec3 thay th\u1ebf gi\u1ea3i ph\u00e1p gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS \u1edf m\u1ea1ng th\u01b0\u1ee3ng ngu\u1ed3n.<\/p>\n<\/div>\n\n<h3 id=\"h-does-a-cdn-help-against-ddos-attacks\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CDN_co_giup_chong_tan_cong_DDoS_khong\"><\/span>CDN c\u00f3 gi\u00fap ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">C\u00f3, n\u1ebfu CDN c\u00f3 c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt v\u00e0 gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS ph\u00f9 h\u1ee3p.<\/p>\n\n<p class=\"wp-block-paragraph\">CDN c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng qua nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m, l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m nh\u1eefng n\u1ed9i dung ph\u00f9 h\u1ee3p v\u00e0 l\u1ecdc y\u00eau c\u1ea7u \u0111\u00e1ng ng\u1edd tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 n\u00e0y c\u00f3 th\u1ec3 b\u1ecb v\u01b0\u1ee3t qua n\u1ebfu k\u1ebb t\u1ea5n c\u00f4ng k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp \u0111\u01b0\u1ee3c v\u1edbi \u0111\u1ecba ch\u1ec9 IP c\u00f4ng khai c\u1ee7a m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i ra, t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 website th\u00f4ng th\u01b0\u1eddng c\u1ee7a CDN kh\u00f4ng t\u1ef1 \u0111\u1ed9ng bao ph\u1ee7 c\u00e1c d\u1ecbch v\u1ee5 kh\u00f4ng d\u00f9ng HTTP, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u01b0u l\u01b0\u1ee3ng c\u1ee7a m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i.<\/p>\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c giao th\u1ee9c v\u00e0 d\u1ecbch v\u1ee5 m\u00e0 b\u1ea1n c\u1ea7n b\u1ea3o v\u1ec7.<\/p>\n\n<h2 id=\"h-what-to-look-for-in-ddos-protected-hosting\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_xem_xet_dieu_gi_khi_chon_dich_vu_luu_tru_co_bao_ve_chong_DDoS\"><\/span>C\u1ea7n xem x\u00e9t \u0111i\u1ec1u g\u00ec khi ch\u1ecdn d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef c\u00f3 b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Khi so s\u00e1nh c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef, b\u1ea1n n\u00ean xem x\u00e9t nhi\u1ec1u y\u1ebfu t\u1ed1 h\u01a1n l\u00e0 ch\u1ec9 n\u0103ng l\u1ef1c gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c qu\u1ea3ng c\u00e1o.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u1ea1m vi b\u1ea3o v\u1ec7:<\/strong> Ki\u1ec3m tra xem gi\u1ea3i ph\u00e1p c\u00f3 b\u1ea3o v\u1ec7 tr\u01b0\u1edbc t\u1ea5n c\u00f4ng L\u1edbp 3\/4, t\u1ea5n c\u00f4ng L\u1edbp 7 hay c\u1ea3 hai.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3m thi\u1ec3u t\u1ef1 \u0111\u1ed9ng:<\/strong> X\u00e1c \u0111\u1ecbnh xem bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c hay \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t sau khi ph\u00e1t hi\u1ec7n cu\u1ed9c t\u1ea5n c\u00f4ng.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3:<\/strong> X\u00e1c nh\u1eadn ph\u1ea1m vi b\u1ea3o v\u1ec7 cho website, API, m\u00e1y ch\u1ee7 tr\u00f2 ch\u01a1i v\u00e0 c\u00e1c giao th\u1ee9c kh\u00e1c m\u00e0 b\u1ea1n c\u1ea7n.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u00e1m s\u00e1t v\u00e0 h\u1ed7 tr\u1ee3:<\/strong> T\u00ecm hi\u1ec3u kh\u1ea3 n\u0103ng theo d\u00f5i l\u01b0u l\u01b0\u1ee3ng, c\u1ea3nh b\u00e1o khi h\u1ec7 th\u1ed1ng gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng v\u00e0 quy tr\u00ecnh b\u00e1o c\u00e1o t\u1ea5n c\u00f4ng r\u00f5 r\u00e0ng.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>X\u1eed l\u00fd tr\u01b0\u1eddng h\u1ee3p nh\u1eadn di\u1ec7n nh\u1ea7m:<\/strong> Kh\u00f4ng n\u00ean \u0111\u1ec3 vi\u1ec7c l\u1ecdc qu\u00e1 nghi\u00eam ng\u1eb7t ch\u1eb7n kh\u00e1ch truy c\u1eadp h\u1ee3p l\u1ec7 m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n<p class=\"wp-block-paragraph\">N\u0103ng l\u1ef1c gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng l\u1edbn l\u00e0 m\u1ed9t \u01b0u \u0111i\u1ec3m, nh\u01b0ng kh\u00f4ng b\u1ea3o \u0111\u1ea3m kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 tr\u01b0\u1edbc m\u1ecdi cu\u1ed9c t\u1ea5n c\u00f4ng v\u00e0 c\u0169ng kh\u00f4ng \u0111\u1ed3ng ngh\u0129a v\u1edbi b\u0103ng th\u00f4ng d\u00e0nh ri\u00eang cho t\u1eebng m\u00e1y ch\u1ee7.<\/p>\n\n<h2 id=\"h-how-to-improve-your-ddos-resilience\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cach_tang_kha_nang_chong_chiu_truoc_tan_cong_DDoS\"><\/span>C\u00e1ch t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu tr\u01b0\u1edbc t\u1ea5n c\u00f4ng DDoS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 \u1edf c\u1ea5p \u0111\u1ed9 d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef n\u00ean l\u00e0 m\u1ed9t ph\u1ea7n trong chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n h\u01a1n.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u00f3ng c\u00e1c c\u1ed5ng m\u1ea1ng kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c giao di\u1ec7n qu\u1ea3n tr\u1ecb.<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng WAF v\u00e0 thi\u1ebft l\u1eadp c\u1ea9n th\u1eadn c\u00e1c gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 cho \u1ee9ng d\u1ee5ng web c\u00f4ng khai.<\/li>\n\n\n\n<li>B\u1ea3o v\u1ec7 quy\u1ec1n truy c\u1eadp v\u00e0o m\u00e1y ch\u1ee7 g\u1ed1c khi s\u1eed d\u1ee5ng CDN ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi d\u1ea1ng proxy ng\u01b0\u1ee3c.<\/li>\n\n\n\n<li>Gi\u00e1m s\u00e1t m\u1eabu h\u00ecnh l\u01b0u l\u01b0\u1ee3ng, th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 m\u1ee9c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean.<\/li>\n\n\n\n<li>Duy tr\u00ec \u1ee9ng d\u1ee5ng \u1edf tr\u1ea1ng th\u00e1i t\u1ed1i \u01b0u v\u00e0 chu\u1ea9n b\u1ecb quy tr\u00ecnh kh\u00f4i ph\u1ee5c \u0111\u00e1ng tin c\u1eady.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">N\u1ebfu nghi ng\u1edd \u0111ang c\u00f3 cu\u1ed9c t\u1ea5n c\u00f4ng, h\u00e3y ki\u1ec3m tra c\u00e1c ch\u1ec9 s\u1ed1 v\u1ec1 l\u01b0u l\u01b0\u1ee3ng v\u00e0 d\u1ecbch v\u1ee5, li\u00ean h\u1ec7 v\u1edbi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef v\u00e0 x\u00e1c \u0111\u1ecbnh nh\u1eefng d\u1ecbch v\u1ee5 b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p>\n\n<p class=\"wp-block-paragraph\">Tr\u00e1nh thay \u0111\u1ed5i quy t\u1eafc t\u01b0\u1eddng l\u1eeda khi x\u1ea3y ra s\u1ef1 c\u1ed1 n\u1ebfu ch\u01b0a ki\u1ec3m th\u1eed, v\u00ec nh\u1eefng thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 ch\u1eb7n kh\u00e1ch h\u00e0ng h\u1ee3p l\u1ec7 ho\u1eb7c quy\u1ec1n truy c\u1eadp qu\u1ea3n tr\u1ecb.<\/p>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\">Vi\u1ec7c gi\u00e1m s\u00e1t CPU, b\u1ed9 nh\u1edb, c\u00e1c k\u1ebft n\u1ed1i \u0111ang ho\u1ea1t \u0111\u1ed9ng v\u00e0 nh\u1eadt k\u00fd m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng khi nghi ng\u1edd c\u00f3 cu\u1ed9c t\u1ea5n c\u00f4ng. H\u01b0\u1edbng d\u1eabn v\u1ec1 <a href=\"https:\/\/zynoo.com\/blog\/vi\/linux-commands-for-server-management\/\">c\u00e1c l\u1ec7nh Linux thi\u1ebft y\u1ebfu \u0111\u1ec3 qu\u1ea3n tr\u1ecb m\u00e1y ch\u1ee7<\/a> c\u1ee7a ch\u00fang t\u00f4i gi\u1ea3i th\u00edch nh\u1eefng l\u1ec7nh h\u1eefu \u00edch \u0111\u1ec3 ki\u1ec3m tra t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng v\u00e0 \u0111i\u1ec1u tra s\u1ef1 c\u1ed1 m\u00e1y ch\u1ee7.<\/p>\n<\/div>\n\n<h3 id=\"h-server-level-ddos-protection-iptables-litespeed-and-imunify360\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bao_ve_chong_DDoS_o_cap_do_may_chu_iptables_LiteSpeed_va_Imunify360\"><\/span>B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS \u1edf c\u1ea5p \u0111\u1ed9 m\u00e1y ch\u1ee7: iptables, LiteSpeed v\u00e0 Imunify360<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">C\u00f3. M\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt \u1edf c\u1ea5p \u0111\u1ed9 m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u1ed9t s\u1ed1 cu\u1ed9c t\u1ea5n c\u00f4ng DDoS n\u1ebfu \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1ch.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>iptables:<\/strong> C\u00e1c quy t\u1eafc t\u01b0\u1eddng l\u1eeda Linux c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf k\u1ebft n\u1ed1i kh\u00f4ng mong mu\u1ed1n, ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng \u0111\u00e1ng ng\u1edd v\u00e0 \u00e1p d\u1ee5ng gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9. Tuy nhi\u00ean, ch\u00fang kh\u00f4ng th\u1ec3 ng\u0103n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1edbn l\u00e0m qu\u00e1 t\u1ea3i \u0111\u01b0\u1eddng truy\u1ec1n m\u1ea1ng c\u1ee7a m\u00e1y ch\u1ee7.<\/li>\n\n\n\n<li><strong>LiteSpeed Web Server:<\/strong> T\u00ednh n\u0103ng gi\u1edbi h\u1ea1n t\u00edch h\u1ee3p cho t\u1eebng m\u00e1y kh\u00e1ch c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u, k\u1ebft n\u1ed1i v\u00e0 m\u1ee9c s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng qu\u00e1 m\u1ee9c. M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u1ed1ng DDoS n\u00e2ng cao y\u00eau c\u1ea7u gi\u1ea5y ph\u00e9p LiteSpeed c\u1ee5 th\u1ec3.<\/li>\n\n\n\n<li><strong>Imunify360:<\/strong> Cung c\u1ea5p t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 b\u1eb1ng t\u01b0\u1eddng l\u1eeda, ph\u00e1t hi\u1ec7n DoS, y\u00eau c\u1ea7u bot x\u00e1c minh v\u00e0 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 y\u00eau c\u1ea7u HTTP \u0111\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u l\u01b0u l\u01b0\u1ee3ng g\u00e2y h\u1ea1i.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y ph\u00e1t huy hi\u1ec7u qu\u1ea3 t\u1ed1t nh\u1ea5t khi k\u1ebft h\u1ee3p v\u1edbi gi\u1ea3i ph\u00e1p gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS \u1edf c\u1ea5p \u0111\u1ed9 d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef. Bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 \u1edf l\u1edbp m\u1ea1ng x\u1eed l\u00fd c\u00e1c \u0111\u1ee3t t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp l\u01b0u l\u01b0\u1ee3ng tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn m\u00e1y ch\u1ee7, c\u00f2n c\u00e1c c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt c\u1ee5c b\u1ed9 gi\u00fap ki\u1ec3m so\u00e1t k\u1ebft n\u1ed1i v\u00e0 y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng g\u00e2y h\u1ea1i.<\/p>\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n ki\u1ec3m th\u1eed k\u1ef9 c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt \u0111\u1ec3 tr\u00e1nh ch\u1eb7n ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7.<\/p>\n\n<h2 id=\"h-ddos-protection-at-zynoo\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bao_ve_chong_DDoS_tai_ZYNOO\"><\/span>B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS t\u1ea1i ZYNOO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">ZYNOO t\u00edch h\u1ee3p gi\u1ea3i ph\u00e1p gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS v\u00e0o d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef VPS v\u00e0 h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng t\u1ea1i Bulgaria.<\/p>\n\n<p class=\"wp-block-paragraph\">H\u1ea1 t\u1ea7ng c\u1ee7a ch\u00fang t\u00f4i cung c\u1ea5p <strong>n\u0103ng l\u1ef1c gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng DDoS l\u00ean \u0111\u1ebfn 500 Gbps<\/strong>, gi\u00fap l\u1ecdc l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i v\u00e0 gi\u1ea3m gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5.<\/p>\n\n<p class=\"wp-block-paragraph\">Kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 ch\u1ecdn t\u00e0i nguy\u00ean \u1ea3o ho\u1eb7c t\u00e0i nguy\u00ean v\u1eadt l\u00fd d\u00e0nh ri\u00eang t\u00f9y theo y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng.<\/p>\n\n<p class=\"wp-block-paragraph\">Kh\u00e1m ph\u00e1 <a href=\"https:\/\/zynoo.com\/vps-hosting.html\">c\u00e1c g\u00f3i l\u01b0u tr\u1eef VPS<\/a> ho\u1eb7c <a href=\"https:\/\/zynoo.com\/bulgaria-servers.html\">m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng t\u1ea1i Bulgaria<\/a> c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 so s\u00e1nh c\u00e1c c\u1ea5u h\u00ecnh hi\u1ec7n c\u00f3.<\/p>\n\n<p class=\"wp-block-paragraph\">N\u0103ng l\u1ef1c gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng kh\u00f4ng b\u1ea3o \u0111\u1ea3m kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 tr\u01b0\u1edbc m\u1ecdi cu\u1ed9c t\u1ea5n c\u00f4ng. H\u00e3y x\u00e1c nh\u1eadn ph\u1ea1m vi b\u1ea3o v\u1ec7 cho c\u00e1c giao th\u1ee9c li\u00ean quan v\u00e0 nh\u1eefng y\u00eau c\u1ea7u \u1edf c\u1ea5p \u0111\u1ed9 \u1ee9ng d\u1ee5ng c\u1ee7a d\u1ecbch v\u1ee5 b\u1ea1n s\u1eed d\u1ee5ng.<\/p>\n\n<h2 id=\"h-frequently-asked-questions\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1793658041940\"><strong class=\"schema-faq-question\">Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n m\u1ecdi cu\u1ed9c t\u1ea5n c\u00f4ng kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">Kh\u00f4ng. Bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u hi\u1ec7u qu\u1ea3 gi\u00fap t\u0103ng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu, nh\u01b0ng k\u1ebft qu\u1ea3 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng, dung l\u01b0\u1ee3ng m\u1ea1ng, h\u00e0nh vi c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 b\u1ea3o v\u1ec7 hi\u1ec7n c\u00f3.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793658060900\"><strong class=\"schema-faq-question\">M\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng c\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">C\u00f3. Ph\u1ea7n c\u1ee9ng d\u00e0nh ri\u00eang cung c\u1ea5p t\u00e0i nguy\u00ean \u0111i\u1ec7n to\u00e1n \u0111\u1ed9c quy\u1ec1n nh\u01b0ng kh\u00f4ng th\u1ec3 ng\u0103n k\u1ebb t\u1ea5n c\u00f4ng l\u00e0m qu\u00e1 t\u1ea3i k\u1ebft n\u1ed1i m\u1ea1ng ho\u1eb7c \u1ee9ng d\u1ee5ng.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793658071831\"><strong class=\"schema-faq-question\">Ch\u1ec9 d\u00f9ng t\u01b0\u1eddng l\u1eeda c\u00f3 \u0111\u1ee7 \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng DDoS kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">Th\u01b0\u1eddng l\u00e0 kh\u00f4ng. T\u01b0\u1eddng l\u1eeda gi\u00fap ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp, nh\u01b0ng c\u00e1c \u0111\u1ee3t t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp l\u01b0u l\u01b0\u1ee3ng l\u1edbn th\u01b0\u1eddng c\u1ea7n \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u \u1edf m\u1ea1ng th\u01b0\u1ee3ng ngu\u1ed3n. Website c\u0169ng c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb WAF v\u00e0 vi\u1ec7c gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 \u1edf c\u1ea5p \u0111\u1ed9 \u1ee9ng d\u1ee5ng.<\/p> <\/div> <\/div>\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec kh\u1ea3 n\u0103ng truy c\u1eadp website, API, d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef VPS v\u00e0 m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng khi x\u1ea3y ra t\u1ea5n c\u00f4ng b\u1eb1ng l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i.<\/p>\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ti\u1ebfp c\u1eadn hi\u1ec7u qu\u1ea3 nh\u1ea5t l\u00e0 k\u1ebft h\u1ee3p bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u \u1edf m\u1ea1ng th\u01b0\u1ee3ng ngu\u1ed3n \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda L\u1edbp 3\/4 v\u1edbi b\u1ea3o m\u1eadt \u1ee9ng d\u1ee5ng L\u1edbp 7 ph\u00f9 h\u1ee3p, gi\u00e1m s\u00e1t v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch \u1ee9ng ph\u00f3 s\u1ef1 c\u1ed1.<\/p>\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e1nh gi\u00e1 h\u1ea1 t\u1ea7ng l\u01b0u tr\u1eef, h\u00e3y ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 d\u1ef1a tr\u00ean c\u00e1c d\u1ecbch v\u1ee5 b\u1ea1n v\u1eadn h\u00e0nh v\u00e0 nh\u1eefng m\u1ed1i \u0111e d\u1ecda m\u00e0 ch\u00fang ph\u1ea3i \u0111\u1ed1i m\u1eb7t, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o n\u0103ng l\u1ef1c gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS gi\u00fap website, \u1ee9ng d\u1ee5ng, d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef VPS v\u00e0 m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng lu\u00f4n ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n v\u00e0 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i nh\u1eb1m g\u00e2y qu\u00e1 t\u1ea3i. M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS) c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":5944,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[646],"tags":[925,927,924,675,923,926,928],"class_list":["post-5942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dich-vu-luu-tru-web","tag-cac-giai-phap-bao-ve-chong-ddos","tag-cach-phong-tranh-tan-cong-ddos","tag-cdn-cai-thien-hieu-suat-website","tag-luu-tru-web","tag-loi-ich-cua-cdn","tag-phong-ve-hieu-qua-truoc-tan-cong-ddos","tag-tan-dung-loi-ich-cua-cdn"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i, c\u00e1c l\u1edbp &amp; l\u1ee3i \u00edch<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 ch\u1ed1ng DDoS, s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1ea5n c\u00f4ng L\u1edbp 3\/4 v\u00e0 L\u1edbp 7, c\u0169ng nh\u01b0 c\u00e1ch b\u1ea3o v\u1ec7 website, VPS v\u00e0 m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zynoo.com\/blog\/vi\/ddos-protection\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u1ea3o v\u1ec7 ch\u1ed1ng DDoS l\u00e0 g\u00ec? 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