{"id":4425,"date":"2025-06-03T14:59:04","date_gmt":"2025-06-03T07:59:04","guid":{"rendered":"https:\/\/dncloud.net\/blog\/?p=4425"},"modified":"2025-06-03T14:59:04","modified_gmt":"2025-06-03T07:59:04","slug":"ddos-la-gi","status":"publish","type":"post","link":"https:\/\/dncloud.net\/blog\/ddos-la-gi\/","title":{"rendered":"DDoS l\u00e0 g\u00ec? C\u00e1ch x\u1eed l\u00fd v\u00e0 ph\u00f2ng ch\u1ed1ng DDoS"},"content":{"rendered":"<p>Cu\u1ed9c t\u1ea5n c\u00f4ng DDoS c\u1ef1c k\u1ef3 nguy hi\u1ec3m v\u00e0 li\u00ean lu\u1ef5 kh\u00f4ng ch\u1ec9 b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn website m\u00e0 c\u00f2n t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn doanh nghi\u1ec7p. Do \u0111\u00f3, vi\u1ec7c ph\u00f2ng ch\u1ed1ng DDoS v\u00e0 c\u00e1ch x\u1eed l\u00fd hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi quan t\u00e2m \u0111\u1ebfn. Trong b\u00e0i vi\u1ebft n\u00e0y, DNCLOUD gi\u00fap b\u1ea1n t\u00ecm hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 t\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec c\u0169ng nh\u01b0 l\u00e0m th\u1ebf n\u00e0o ch\u1ed1ng DDos hi\u1ec7u qu\u1ea3.<\/p>\n<h2>T\u1ed5ng quan v\u1ec1 ki\u1ebfn th\u1ee9c DDoS v\u00e0 DoS<\/h2>\n<div id=\"attachment_4443\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" aria-describedby=\"caption-attachment-4443\" class=\"wp-image-4443 size-full\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos.png.webp\" alt=\"kh\u00e1i ni\u1ec7m v\u1ec1 ddos v\u00e0 dos\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/khai-niem-ve-ddos-va-dos-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/khai-niem-ve-ddos-va-dos-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4443\" class=\"wp-caption-text\">T\u1ed5ng quan v\u1ec1 ki\u1ebfn th\u1ee9c DDoS v\u00e0 DoS<\/p><\/div>\n<h3>DDoS l\u00e0 g\u00ec?<\/h3>\n<p><strong>DDoS<\/strong> l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a <strong>Distributed Denial-of-Service<\/strong> (t\u1ea5n c\u00f4ng d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n) l\u00e0 m\u1ed9t lo\u1ea1i t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 nh\u1eb1m l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1eb7c ng\u01b0ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t d\u1ecbch v\u1ee5, m\u00e1y ch\u1ee7 m\u1ea1ng b\u1eb1ng c\u00e1ch \u00e1p \u0111\u1ea3o n\u00f3 v\u1edbi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau.<\/p>\n<p>M\u1ee5c ti\u00eau c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y nh\u1eafm v\u00e0o c\u00e1c trang web khi b\u1ecb g\u1eedi qu\u00e1 nhi\u1ec1u y\u00eau c\u1ea7u gi\u1ea3 \u0111\u1ebfn <a href=\"https:\/\/dncloud.net\/blog\/website-la-gi\/\">website<\/a>, khi\u1ebfn cho b\u1ecb qu\u00e1 t\u1ea3i v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng d\u1eabn d\u1eabn gi\u1ea3m l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp ho\u1eb7c h\u1ecfng website. Hacker s\u1ebd t\u1ea5n c\u00f4ng t\u1eeb h\u00e0ng ch\u1ee5c m\u00e1y t\u00ednh kh\u00e1c nhau \u0111\u1ec3 c\u00e0i \u0111\u1eb7t m\u00e3 \u0111\u1ed9c th\u00f4ng qua email l\u1eeba \u0111\u1ea3o, ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i, ho\u1eb7c khai th\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt.<\/p>\n<h3>DoS l\u00e0 g\u00ec?<\/h3>\n<p><strong>DoS<\/strong> l\u00e0<strong> t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 (Denial of Service)\u00a0<\/strong>l\u00e0 m\u1ed9t lo\u1ea1i t\u1ea5n c\u00f4ng m\u1ea1ng do ng\u01b0\u1eddi t\u1ea5n c\u00f4ng c\u1ed1 t\u00ecnh l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1eb7c ng\u0103n c\u1ea3n ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7 kh\u00f4ng truy c\u1eadp v\u00e0o m\u1ed9t d\u1ecbch v\u1ee5 ho\u1eb7c t\u00e0i nguy\u00ean tr\u1ef1c tuy\u1ebfn b\u1eb1ng c\u00e1ch g\u00e2y qu\u00e1 t\u1ea3i v\u00e0 kh\u00f4ng th\u1ec3 x\u1eed l\u00fd gi\u00e1n \u0111o\u1ea1n cho m\u00e1y ch\u1ee7, m\u1ea1ng, ho\u1eb7c \u1ee9ng d\u1ee5ng.<\/p>\n<p>M\u1ee5c ti\u00eau c\u1ee7a t\u1ea5n c\u00f4ng n\u00e0y th\u01b0\u1eddng nh\u1eafm v\u00e0o <a href=\"https:\/\/dncloud.net\/cloud-vps\/\">VPS<\/a> ho\u1eb7c web server c\u1ee7a ng\u00e2n h\u00e0ng, trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed,&#8230; Tuy nhi\u00ean, DoS ch\u1ec9 t\u1ea5n c\u00f4ng t\u1eeb m\u1ed9t ngu\u1ed3n duy nh\u1ea5t (m\u1ed9t m\u00e1y t\u00ednh ho\u1eb7c m\u1ed9t <a href=\"https:\/\/dncloud.net\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a>) n\u00ean c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng x\u1eed l\u00fd v\u00e0 ng\u0103n ch\u1eb7n \u0111\u01b0\u1ee3c.<\/p>\n<p><a href=\"https:\/\/dncloud.net\/blog\/cloud-server-la-gi\/\"><em><strong>Xem th\u00eam: Cloud Server l\u00e0 g\u00ec? T\u1ea5t t\u1ea7n t\u1eadt v\u1ec1 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y<\/strong><\/em><\/a><\/p>\n<h3>Ph\u00e2n bi\u1ec7t gi\u1eefa DDoS v\u00e0 DoS<\/h3>\n\n<div class=\"pcrstb-wrap\"><table id=\"tablepress-35\" class=\"tablepress tablepress-id-35\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">\u0110\u1eb7c \u0111i\u1ec3m<\/th><th class=\"column-2\">DDoS<\/th><th class=\"column-3\">DoS<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">Ph\u1ea1m vi t\u1ea5n c\u00f4ng<\/td><td class=\"column-2\">Nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau<\/td><td class=\"column-3\">Ch\u1ec9 m\u1ed9t ngu\u1ed3n duy nh\u1ea5t<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">C\u00e1ch th\u1ee9c t\u1ea5n c\u00f4ng<\/td><td class=\"column-2\">G\u1eedi y\u00eau c\u1ea7u gi\u1ea3 t\u1ea1o \u0111\u1ebfn m\u1ee5c ti\u00eau c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng ho\u1eb7c d\u1ecbch v\u1ee5 tr\u1ee9c tuy\u1ebfn.<\/td><td class=\"column-3\">G\u1eedi y\u00eau c\u1ea7u kh\u00f4ng h\u1ee3p l\u1ec7 ho\u1eb7c h\u1ee3p l\u1ec7 \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 ho\u1eb7c trang web c\u1ee5 th\u1ec3<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">\u0110\u1ed9 kh\u00f3 th\u1ef1c hi\u1ec7n<\/td><td class=\"column-2\">Kh\u00f3<\/td><td class=\"column-3\">Trung b\u00ecnh<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">T\u00ednh ph\u00e2n t\u00e1n<\/td><td class=\"column-2\">Ph\u00e2n t\u00e1n<\/td><td class=\"column-3\">Kh\u00f4ng ph\u00e2n t\u00e1n<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Kh\u1ea3 n\u0103ng g\u00e2y h\u1ea1i<\/td><td class=\"column-2\">G\u00e2y c\u1ea3n tr\u1edf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng l\u1edbn<\/td><td class=\"column-3\">G\u00e2y c\u1ea3n tr\u1edf cho m\u00e1y t\u00ednh ho\u1eb7c m\u1ea1ng nh\u1ecf<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">\u0110i\u1ec3m y\u1ebfu<\/td><td class=\"column-2\">Kh\u00f3 ch\u1ed1ng l\u1ea1i do nhi\u1ec1u ngu\u1ed3n t\u1ea5n c\u00f4ng<\/td><td class=\"column-3\">D\u1ec5 x\u1eed l\u00fd v\u00e0 ng\u0103n ch\u1eb7n<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">Th\u1eddi gian t\u1ea5n c\u00f4ng<\/td><td class=\"column-2\">K\u00e9o d\u00e0i<\/td><td class=\"column-3\">Ng\u1eafn<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">C\u00e1ch th\u1ee9c th\u1ef1c hi\u1ec7n<\/td><td class=\"column-2\">S\u1eed d\u1ee5ng m\u1ea1ng botnet \u0111\u1ec3 g\u1eedi m\u00e3 \u0111\u1ed9c h\u00e0ng lo\u1ea1t<\/td><td class=\"column-3\">S\u1eed d\u1ee5ng l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt ho\u1eb7c t\u1ea1o hi\u1ec7n t\u01b0\u1ee3ng Flooding<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n\n<h2>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1ea5n c\u00f4ng DDoS<\/h2>\n<div id=\"attachment_4440\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4440\" class=\"wp-image-4440 size-full\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos.png.webp\" alt=\"c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng ddos\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cach-thuc-hoat-dong-ddos-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" loading=\"lazy\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cach-thuc-hoat-dong-ddos-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4440\" class=\"wp-caption-text\">C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng\u00a0 c\u1ee7a t\u1ea5n c\u00f4ng DDoS<\/p><\/div>\n<p>Khi th\u1ef1c hi\u1ec7n t\u1ea5n c\u00f4ng DDoS, hacker s\u1ebd g\u1eedi m\u1ed9t chu\u1ed7i bot ho\u1eb7c botnet v\u00e0o website d\u1eabn \u0111\u1ebfn b\u1ecb qu\u00e1 t\u1ea3i v\u00e0 tr\u00e0n site, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng h\u1ee3p h\u1ee3p kh\u00e1c b\u1ecb tho\u00e1t ra ngo\u00e0i website do l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp b\u1ecb qu\u00e1 t\u1ea3i. T\u1eeb \u0111\u00f3, d\u1ecbch v\u1ee5 b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng trong kho\u1ea3ng th\u1eddi gian.<\/p>\n<p>Hacker c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng l\u1ed7 h\u1ed5ng n\u00e0y \u0111\u1ed9t nh\u1eadp v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 gi\u00e0nh quy\u1ec1n truy c\u1eadp v\u00e0 \u0111\u00e1nh c\u1eafp th\u00f4ng tin m\u1eadt thi\u1ebft. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y c\u00f3 th\u1ec3 k\u00e9o d\u00e0i v\u00e0i gi\u1edd ho\u1eb7c v\u00e0i ng\u00e0y g\u00e2y ra thi\u1ec7t h\u1ea1i r\u1ea5t l\u1edbn cho doanh nghi\u1ec7p.<\/p>\n<h2 id=\"ftoc-heading-5\" class=\"ftwp-heading\">Nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDos l\u00e0 g\u00ec?<\/h2>\n<p>M\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn t\u1ea5n c\u00f4ng DDoS l\u00e0:<\/p>\n<ul>\n<li><strong>T\u00e0i ch\u00ednh<\/strong>: Tin t\u1eb7c s\u1eed d\u1ee5ng DDoS \u0111\u1ec3 k\u1ebft h\u1ee3p v\u1edbi ransomware, \u00e9p n\u1ea1n nh\u00e2n tr\u1ea3 ti\u1ec1n chu\u1ed9c. Doanh nghi\u1ec7p \u0111\u1ed1i th\u1ee7 c\u0169ng c\u00f3 th\u1ec3 d\u00f9ng DDoS \u0111\u1ec3 l\u00e0m suy y\u1ebfu \u0111\u1ed1i ph\u01b0\u01a1ng.<\/li>\n<li><strong>B\u1ea5t \u0111\u1ed3ng v\u1ec1 \u00fd th\u1ee9c h\u1ec7<\/strong>: T\u1ea5n c\u00f4ng DDoS \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m ch\u1ed1ng l\u1ea1i ch\u00ednh quy\u1ec1n \u00e1p b\u1ee9c ho\u1eb7c \u0111\u1ec3 \u1ee7ng h\u1ed9 m\u1ed9t h\u1ec7 t\u01b0 t\u01b0\u1edfng, ch\u00ednh tr\u1ecb, ho\u1eb7c t\u00f4n gi\u00e1o c\u1ee5 th\u1ec3.<\/li>\n<li><strong>Chi\u1ebfn thu\u1eadt<\/strong>: L\u00e0 m\u1ed9t ph\u1ea7n trong chi\u1ebfn d\u1ecbch l\u1edbn, DDoS c\u00f3 th\u1ec3 ph\u1ed1i h\u1ee3p v\u1edbi t\u1ea5n c\u00f4ng v\u1eadt l\u00fd ho\u1eb7c x\u00e2m nh\u1eadp h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao h\u01a1n.<\/li>\n<li><strong>Th\u01b0\u01a1ng m\u1ea1i<\/strong>: K\u1ebb t\u1eb7c s\u1eed d\u1ee5ng DDoS t\u1ea5n c\u00f4ng qua l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt \u0111\u1ec3 nh\u1eafm v\u00e0o c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p l\u1edbn nh\u1eb1m thu th\u1eadp th\u00f4ng tin, l\u00e0m t\u1ed5n h\u1ea1i uy t\u00edn, ho\u1eb7c khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng m\u1ea5t ni\u1ec1m tin, nh\u01b0 c\u00e1c v\u1ee5 t\u1ea5n c\u00f4ng Sony hay British Airways.<\/li>\n<li><strong>T\u1ed1ng ti\u1ec1n<\/strong>: T\u1ea5n c\u00f4ng DDoS s\u1eed d\u1ee5ng nh\u01b0 c\u00f4ng c\u1ee5 ph\u1ed5 bi\u1ebfn \u0111\u1ec3 g\u00e2y \u00e1p l\u1ef1c, ph\u1ee5c v\u1ee5 cho c\u00e1c l\u1ee3i \u00edch c\u00e1 nh\u00e2n ho\u1eb7c h\u00e0nh vi t\u1ed1ng ti\u1ec1n.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng do nh\u00e0 n\u01b0\u1edbc<\/strong>: M\u1ed9t s\u1ed1 cu\u1ed9c t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng DDoS \u0111\u1ec3 g\u00e2y r\u1ed1i lo\u1ea1n qu\u00e2n s\u1ef1, l\u00e0m x\u00e1o tr\u1ed9n \u0111\u1eddi s\u1ed1ng d\u00e2n s\u1ef1.\n<p><div id=\"attachment_4444\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4444\" class=\"wp-image-4444 size-full\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos.png.webp\" alt=\"nguy\u00ean nh\u00e2n t\u1ea5n c\u00f4ng ddos\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/nguyen-nhan-tan-cong-ddos-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" loading=\"lazy\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/nguyen-nhan-tan-cong-ddos-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4444\" class=\"wp-caption-text\">Nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDos<\/p><\/div><\/li>\n<\/ul>\n<h2>T\u00e1c h\u1ea1i c\u1ee7a t\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec?<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 h\u1eadu qu\u1ea3 c\u1ee7a t\u1ea5n c\u00f4ng DDoS mang l\u1ea1i:<\/p>\n<ul>\n<li>G\u00e2y ra gi\u00e1n \u0111o\u1ea1n v\u00e0 ho\u1ea1t \u0111\u1ed9ng m\u00e1y ch\u1ee7, khi\u1ebfn ng\u01b0\u1eddi truy c\u1eadp h\u1ee3p l\u1ec7 kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c website.<\/li>\n<li>G\u00e2y thi\u1ec7t h\u1ea1i l\u1edbn v\u1ec1 doanh thu v\u00e0 chi ph\u00ed kh\u1eafc ph\u1ee5c cho doanh nghi\u1ec7p<\/li>\n<li>L\u00e0m gi\u00e1n \u0111o\u1ea1n v\u00e0 gi\u1ea3m hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng do m\u1ea5t k\u1ebft n\u1ed1i m\u1ea1ng.<\/li>\n<li>Doanh nghi\u1ec7p b\u1ecb \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn v\u1ec1 uy t\u00edn v\u00e0 l\u00e0m m\u1ea5t kh\u00e1ch h\u00e0ng khi kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c v\u00e0o trang web.<\/li>\n<li>G\u00e2y th\u1ea5t tho\u00e1t v\u1ec1 t\u00e0i ch\u00ednh v\u00e0 d\u1eef li\u1ec7u kinh doanh quan tr\u1ecdng.\n<p><div id=\"attachment_4445\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4445\" class=\"wp-image-4445 size-full\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos.png.webp\" alt=\"t\u00e1c h\u1ea1i c\u1ee7a ddos\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/tac-hai-cua-ddos-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/tac-hai-cua-ddos-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4445\" class=\"wp-caption-text\">T\u00e1c h\u1ea1i c\u1ee7a t\u1ea5n c\u00f4ng DDoS<\/p><\/div><\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng DDoS ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<\/h2>\n<ul>\n<li><strong>T\u1ea5n c\u00f4ng SYN Flood<\/strong>: \u0110\u00e2y l\u00e0 m\u1ed9t chi\u1ebfn thu\u1eadt trong \u0111\u00f3 k\u1ebb t\u1ea5n c\u00f4ng g\u1eedi h\u00e0ng lo\u1ea1t y\u00eau c\u1ea7u k\u1ebft n\u1ed1i SYN \u0111\u1ebfn h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau nh\u01b0ng kh\u00f4ng bao gi\u1edd ho\u00e0n th\u00e0nh qu\u00e1 tr\u00ecnh k\u1ebft n\u1ed1i. M\u00e1y ch\u1ee7 c\u1ee7a m\u1ee5c ti\u00eau ph\u1ea3i ch\u1edd \u0111\u1ee3i c\u00e1c y\u00eau c\u1ea7u n\u00e0y ho\u00e0n t\u1ea5t, d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng ng\u1eebng ho\u1ea1t \u0111\u1ed9ng khi qu\u00e1 t\u1ea3i t\u00e0i nguy\u00ean.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng UDP Flood<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng s\u1ebd g\u1eedi m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn g\u00f3i tin UDP c\u00e1c packets User Datagram Protocol \u0111\u1ebfn server m\u1ee5c ti\u00eau tr\u00ean h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u00e1p \u0111\u1ea3o x\u1eed l\u00fd v\u00e0 ph\u1ea3n h\u1ed3i c\u1ee7a thi\u1ebft b\u1ecb. C\u00e1c t\u01b0\u1eddng l\u1eeda s\u1ebd b\u1ea3o v\u1ec7 v\u00e0 \u0111\u00e1p \u1ee9ng cho m\u1ed7i g\u00f3i tin UDP d\u1eabn \u0111\u1ebfn b\u1ecb c\u1ea1n ki\u1ec7t v\u00e0 gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5.\n<p><div id=\"attachment_4439\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4439\" class=\"size-full wp-image-4439\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos.png.webp\" alt=\"c\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng ddos\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/cac-hinh-thuc-tan-cong-ddos-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/cac-hinh-thuc-tan-cong-ddos-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4439\" class=\"wp-caption-text\">C\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng ddos<\/p><\/div><\/li>\n<li><strong>T\u1ea5n c\u00f4ng HTTP Flood<\/strong>: T\u1ea5n c\u00f4ng n\u00e0y l\u1ee3i d\u1ee5ng c\u00e1c y\u00eau c\u1ea7u <strong>HTTP (v\u00ed d\u1ee5 GET ho\u1eb7c POST)<\/strong> g\u1eedi \u0111\u1ebfn m\u00e1y ch\u1ee7 web v\u1edbi m\u1eadt \u0111\u1ed9 r\u1ea5t cao. K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c botnet, nh\u00f3m m\u00e1y t\u00ednh c\u00f3 k\u1ebft n\u1ed1i Internet th\u00f4ng qua ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i Trojan Horse \u0111\u1ec3 chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t nh\u1eb1m l\u00e0m qu\u00e1 t\u1ea3i v\u00e0 gi\u00e1n \u0111o\u1ea1n h\u1ec7 th\u1ed1ng<\/li>\n<li><strong>T\u1ea5n c\u00f4ng Ping of Death<\/strong>: K\u1ef9 thu\u1eadt n\u00e0y g\u1eedi c\u00e1c g\u00f3i tin <strong>ICMP<\/strong> <strong>(Internet Control Message Protocol) <\/strong>c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn nh\u1eb1m l\u00e0m h\u1ecfng ho\u1eb7c g\u00e2y treo c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng. M\u1eb7c d\u00f9 lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y \u00edt s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn hi\u1ec7n nay nh\u01b0ng n\u00f3 v\u1eabn \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 m\u1ed9t v\u00ed d\u1ee5 l\u1ecbch s\u1eed v\u1ec1 s\u1ef1 khai th\u00e1c giao th\u1ee9c ICMP.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng Smurf Attack<\/strong>: T\u1ea5n c\u00f4ng n\u00e0y s\u1eed d\u1ee5ng\u00a0 \u0111\u1ecba ch\u1ec9 IP gi\u1ea3 m\u1ea1o c\u1ee7a n\u1ea1n nh\u00e2n v\u00e0 g\u1eedi c\u00e1c y\u00eau c\u1ea7u ping t\u1edbi m\u1ed9t m\u1ea1ng broadcast. Khi c\u00e1c m\u00e1y t\u00ednh trong m\u1ea1ng ph\u1ea3n h\u1ed3i, t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u s\u1ebd nh\u1eafm v\u00e0o m\u1ee5c ti\u00eau, l\u00e0m cho h\u1ec7 th\u1ed1ng b\u1ecb qu\u00e1 t\u1ea3i do s\u1ed1 l\u01b0\u1ee3ng ph\u1ea3n h\u1ed3i v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng x\u1eed l\u00fd.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng Fraggle Attack<\/strong>: \u0110\u00e2y l\u00e0 m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee7a Smurf Attack, nh\u01b0ng thay v\u00ec s\u1eed d\u1ee5ng giao th\u1ee9c <strong>ICMP<\/strong>, n\u00f3 s\u1eed d\u1ee5ng <strong>UDP<\/strong> \u0111\u1ec3 g\u1eedi c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn m\u1ed9t <strong>\u0111\u1ecba ch\u1ec9 IP broadcast<\/strong>. K\u1ebft qu\u1ea3 l\u00e0 h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau nh\u1eadn \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng l\u1edbn l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng mong mu\u1ed1n.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng Slowloris<\/strong>: \u0110\u00e2y l\u00e0 m\u1ed9t chi\u1ebfn thu\u1eadt t\u1ea5n c\u00f4ng HTTP kh\u00e1c, trong \u0111\u00f3 k\u1ebb t\u1ea5n c\u00f4ng g\u1eedi y\u00eau c\u1ea7u k\u1ebft n\u1ed1i v\u00f4 h\u1ea1n m\u00e0 thay v\u00e0o \u0111\u00f3 gi\u1eef c\u00e1c k\u1ebft n\u1ed1i m\u1edf trong th\u1eddi gian d\u00e0i, khi\u1ebfn m\u00e1y ch\u1ee7 kh\u00f4ng th\u1ec3 \u0111\u00f3ng k\u1ebft n\u1ed1i v\u00e0 x\u1eed l\u00fd y\u00eau c\u1ea7u h\u1ee3p l\u1ec7 t\u1eeb ng\u01b0\u1eddi d\u00f9ng kh\u00e1c.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng NTP Amplification<\/strong>: L\u1ee3i d\u1ee5ng m\u1ed9t l\u01b0\u1ee3ng l\u1edbn t\u1eeb m\u00e1y ch\u1ee7 <strong>Network Time Protocol (NTP)<\/strong> khi k\u1ebb t\u1ea5n c\u00f4ng gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n, t\u1ea5n c\u00f4ng <strong>NTP Amplification<\/strong> t\u1ea1o ra l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3 g\u1eedi \u0111\u1ebfn m\u1ee5c ti\u00eau m\u00e0 kh\u00f4ng t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean t\u1eeb ph\u00eda k\u1ebb t\u1ea5n c\u00f4ng.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng HTTP GET<\/strong>: C\u00e1c y\u00eau c\u1ea7u GET h\u1ee3p ph\u00e1p g\u1eedi \u0111\u1ebfn m\u00e1y ch\u1ee7 web m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c. Hacker c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u ngu\u1ed3n ho\u1eb7c botnet \u0111\u1ec3 t\u1ea1o ra l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn v\u1edbi m\u1ee5c ti\u00eau l\u00e0m qu\u00e1 t\u1ea3i c\u00e1c m\u00e1y ch\u1ee7 x\u1eed l\u00fd v\u00e0 t\u1ea1o ra gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 cho ng\u01b0\u1eddi d\u00f9ng th\u1eadt.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng APDoS (Advanced Persistent DDoS)<\/strong>: \u0110\u00e2y l\u00e0 ki\u1ec3u t\u1ea5n c\u00f4ng k\u00e9o d\u00e0i v\u00e0 c\u00f3 k\u1ebf ho\u1ea1ch t\u1ec9 m\u1ec9, th\u01b0\u1eddng k\u00e9o d\u00e0i qua nhi\u1ec1u ng\u00e0y, s\u1eed d\u1ee5ng nhi\u1ec1u k\u1ef9 thu\u1eadt t\u1ea5n c\u00f4ng ph\u1ee9c t\u1ea1p v\u00e0 m\u1ee5c ti\u00eau l\u00e0 l\u00e0m suy y\u1ebfu ho\u1eb7c ph\u00e1 h\u1ee7y h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau ho\u00e0n to\u00e0n. APDoS c\u00f3 th\u1ec3 g\u00e2y ra thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng v\u1ec1 t\u00e0i ch\u00ednh v\u00e0 uy t\u00edn \u0111\u1ed1i v\u1edbi t\u1ed5 ch\u1ee9c m\u1ee5c ti\u00eau.<\/li>\n<\/ul>\n<h2>C\u00e1ch nh\u1eadn bi\u1ebft b\u1ecb t\u1ea5n c\u00f4ng DDoS<\/h2>\n<div id=\"attachment_4447\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4447\" class=\"wp-image-4447 size-full\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos.png.webp\" alt=\"ddos\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/ddos-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/ddos-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4447\" class=\"wp-caption-text\">C\u00e1ch nh\u1eadn bi\u1ebft b\u1ecb t\u1ea5n c\u00f4ng DDoS<\/p><\/div>\n<p>\u0110\u1ec3 ph\u00e1t hi\u1ec7n ra t\u1ea5n c\u00f4ng DDoS, b\u1ea1n c\u1ea7n ph\u1ea3i gi\u00e1m s\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng v\u00e0 thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc c\u1ea3nh b\u00e1o tr\u01b0\u1edbc v\u00ec hacker c\u00f3 th\u1ec3 g\u1eedi th\u00f4ng b\u00e1o tr\u01b0\u1edbc ho\u1eb7c kh\u00f4ng. B\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch b\u1eadt <a href=\"https:\/\/vi.wikipedia.org\/wiki\/T%C6%B0%E1%BB%9Dng_l%E1%BB%ADa\" rel=\"noopener\">t\u01b0\u1eddng l\u1eeda<\/a> ho\u1eb7c s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp<\/p>\n<p>M\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u cho th\u1ea5y h\u1ec7 th\u1ed1ng b\u1ecb t\u1ea5n c\u00f4ng b\u1ea5t th\u01b0\u1eddng:<\/p>\n<ul>\n<li>L\u01b0u l\u01b0\u01a1ng truy c\u1eadp \u0111\u1ed9t ng\u1ed9t t\u0103ng b\u1ea5t th\u01b0\u1eddng v\u00e0 xu\u1ea5t ph\u00e1t t\u1eeb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP g\u1eedi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u.<\/li>\n<li>Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng hi\u1ec7u su\u1ea5t m\u1ea1ng b\u1ecb ch\u1eadm b\u1ea5t th\u01b0\u1eddng<\/li>\n<li>Kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o website n\u00e0o<\/li>\n<li>M\u00e1y ch\u1ee7 ph\u1ea3n h\u1ed3i l\u1ed7i 503 do d\u1ecbch v\u1ee5 b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/li>\n<li>Nh\u1eadn nhi\u1ec1u th\u01b0 r\u00e1c trong t\u00e0i kho\u1ea3n kh\u00f4ng \u0111\u01b0\u1ee3c b\u00ecnh th\u01b0\u1eddng.<\/li>\n<li>C\u00f3 nhi\u1ec1u bi\u1ec3u hi\u1ec7n cho th\u1ea5y c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp k\u1ef3 l\u1ea1, v\u00ed d\u1ee5 nh\u01b0 t\u0103ng cao trong c\u00e1c ng\u00e0y l\u1ebb ho\u1eb7c m\u1ed9t m\u00fai gi\u1edd nh\u1ea5t \u0111\u1ecbnh trong ng\u00e0y.<\/li>\n<\/ul>\n<h2 id=\"ftoc-heading-19\" class=\"ftwp-heading\">C\u00e1c c\u00e1ch ph\u00f2ng ch\u1ed1ng cu\u1ed9c t\u1ea5n c\u00f4ng DDoS hi\u1ec7u qu\u1ea3<\/h2>\n<h3 id=\"ftoc-heading-20\" class=\"ftwp-heading\">S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 Hosting cao c\u1ea5p, ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n<p>N\u00ean ch\u1ecdn l\u1ef1a ngu\u1ed3n <a href=\"https:\/\/dncloud.net\/blog\/hosting-la-gi\/\">Hosting<\/a> cao c\u1ea5p c\u00f3 th\u1ec3 gi\u00fap m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n k\u1ecbp th\u1eddi ng\u0103n ch\u1eb7n c\u00e1c t\u1ea5n c\u00f4ng DDoS m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Nh\u00e0 cung c\u1ea5p s\u1ebd c\u00f3 nh\u1eefng gi\u1ea3i ph\u00e1p m\u1ea1nh m\u1ebd v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd cao c\u1ea5p \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng. Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u c\u00e1c nh\u00e0 cung c\u1ea5p hosting, b\u1ea1n n\u00ean t\u00ecm hi\u1ec3u xem<strong> Anti DDoS l\u00e0 g\u00ec<\/strong> v\u00e0 n\u00ean ki\u1ec3m tra h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4150\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/uploads\/bang-gia-hosting-tai-dncloud.png\" alt=\"\" width=\"1200\" height=\"630\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/uploads\/bang-gia-hosting-tai-dncloud.png 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-gia-hosting-tai-dncloud-300x158.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-gia-hosting-tai-dncloud-1024x538.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-gia-hosting-tai-dncloud-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-gia-hosting-tai-dncloud-768x403.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-gia-hosting-tai-dncloud-1170x614.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-gia-hosting-tai-dncloud-585x307.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud-300x158.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud-1024x538.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud-768x403.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud-1170x614.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-gia-hosting-tai-dncloud-585x307.png 585w&quot;}\" \/><\/p>\n<p><a href=\"https:\/\/dncloud.net\/business-hosting\/\">Hosting<\/a> t\u1ea1i DNCLOUD l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f3 ch\u1ed1ng Anti DDoS to\u00e0n di\u1ec7n gi\u00fap t\u1ea5n c\u00f4ng DDoS hi\u1ec7u qu\u1ea3 nh\u1ea5t v\u00e0 website lu\u00f4n \u1ed5n \u0111\u1ecbnh.<\/p>\n<p><a href=\"https:\/\/dncloud.net\/blog\/hosting-doanh-nghiep-la-gi\/\"><em><strong>Xem th\u00eam: Hosting doanh nghi\u1ec7p l\u00e0 g\u00ec? T\u1ea1i sao c\u00e1c doanh nghi\u1ec7p l\u1edbn th\u01b0\u1eddng s\u1eed d\u1ee5ng Business Hosting<\/strong><\/em><\/a><\/p>\n<h3 id=\"ftoc-heading-21\" class=\"ftwp-heading\">Theo d\u00f5i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o website<\/h3>\n<p>Khi ph\u00e1t hi\u1ec7n b\u1ecb t\u1ea5n c\u00f4ng DDoS, b\u1ea1n n\u00ean ki\u1ec3m tra ngay c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a h\u1ec7 th\u1ed1ng. M\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p s\u1eed d\u1ee5ng \u0111\u00f3 l\u00e0 d\u00f9ng \u201c\u0111\u1ecbnh truy\u1ec1n r\u1ed7ng\u201d \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c d\u1eef li\u1ec7u b\u1ecb d\u00ednh m\u00e3 \u0111\u1ed9c ti\u1ebfp c\u1eadn m\u00e1y ch\u1ee7. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u1ea3m v\u00e0 chuy\u1ec3n h\u01b0\u1edbng y\u00eau c\u1ea7u t\u1ea5n c\u00f4ng Flooding th\u00f4ng qua s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh c\u1ee7a botnet.<\/p>\n<h3 class=\"ftwp-heading\">T\u1ea1o \u0111\u1ecbnh tuy\u1ebfn l\u1ed7 \u0111en (Blackhole)<\/h3>\n<div id=\"attachment_4442\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4442\" class=\"size-full wp-image-4442\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole.png.webp\" alt=\"\u0110\u1ecbnh tuy\u1ebfn h\u1ed1 \u0111en (Blackhole)\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Dinh-tuyen-ho-den-Blackhole-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Dinh-tuyen-ho-den-Blackhole-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4442\" class=\"wp-caption-text\">\u0110\u1ecbnh tuy\u1ebfn h\u1ed1 \u0111en (Blackhole)<\/p><\/div>\n<p><strong>Blackhole<\/strong> l\u00e0 gi\u1ea3i ph\u00e1p ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS, n\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch \u0111em c\u1ea3 l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng h\u1ee3p ph\u00e1p v\u00e0 \u0111\u1ed9c h\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn v\u00e0o null route h\u1ed1 \u0111en khi\u1ebfn n\u00f3 b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi m\u1ea1ng. \u0110\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 tuy\u1ec3n ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean cho h\u1ec7 th\u1ed1ng.<\/p>\n<p>Tuy nhi\u00ean, n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng kh\u00f4ng \u0111\u00fang c\u00e1ch, gi\u1ea3i ph\u00e1p n\u00e0y s\u1ebd g\u00e2y gi\u00e1n \u0111o\u1ea1n \u0111\u1ebfn ngu\u1ed3n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0 t\u1ea1o ra s\u01a1 h\u1edf \u0111\u1ec3 k\u1ebb t\u1ea5n c\u00f4ng t\u1ea1o IP gi\u1ea3 v\u00e0 th\u1ef1c hi\u1ec7n t\u1ea5n c\u00f4ng.<\/p>\n<h3 class=\"ftwp-heading\">S\u1eed d\u1ee5ng t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng Website (WAF)<\/h3>\n<div id=\"attachment_4446\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4446\" class=\"size-full wp-image-4446\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF.png.webp\" alt=\"WAF\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/WAF-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/WAF-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4446\" class=\"wp-caption-text\">WAF (T\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng Website)<\/p><\/div>\n<p>S\u1eed d\u1ee5ng WAF l\u00e0 c\u00e1ch ph\u1ed5 bi\u1ebfn \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng DDoS. B\u1eb1ng c\u00e1ch b\u1ea1n ch\u00e8n SQL ho\u1eb7c l\u00e0m gi\u1ea3 y\u00eau c\u1ea7u tr\u00ean c\u00e1c trang web kh\u00e1c nhau, hacker s\u1ebd c\u1ed1 g\u1eafng kh\u00f4ng exploit c\u00e1c l\u1ed7 h\u1ed5ng m\u00e0 b\u1ea1n s\u1eed d\u1ee5ng. Ngo\u00e0i ra, t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng website c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng x\u00e1c \u0111\u1ecbnh c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng ho\u00e0n ch\u1ec9nh v\u00e0 lo\u1ea1i b\u1ecf ch\u00fang kh\u1ecfi h\u1ec7 th\u1ed1ng n\u1ebfu \u0111\u1ea1t \u0111\u01b0\u1ee3c ng\u01b0\u1ee1ng nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<h3 id=\"ftoc-heading-24\" class=\"ftwp-heading\">Chu\u1ea9n b\u1ecb th\u00eam b\u0103ng th\u00f4ng d\u1ef1 ph\u00f2ng<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3527\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-thong.jpg.webp\" alt=\"\" width=\"1200\" height=\"630\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-thong.jpg.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/uploads\/bang-thong-300x158.jpg 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-thong-1024x538.jpg.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/uploads\/bang-thong-150x79.jpg 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-thong-768x403.jpg.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-thong-1170x614.jpg.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/bang-thong-585x307.jpg.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong.jpg&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong.jpg 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong-300x158.jpg 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong-1024x538.jpg 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong-150x79.jpg 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong-768x403.jpg 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong-1170x614.jpg 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/bang-thong-585x307.jpg 585w&quot;}\" \/><\/h3>\n<p>M\u1ed9t c\u00e1ch kh\u00e1c \u0111\u1ec3 ch\u1eb7n DDoS l\u00e0 t\u0103ng th\u00eam b\u0103ng th\u00f4ng c\u1ee7a h\u1ec7 th\u1ed1ng nh\u01b0ng c\u00e1ch n\u00e0y s\u1ebd g\u00e2y ra t\u1ed1n k\u00e9m r\u1ea5t nhi\u1ec1u v\u00ec kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o b\u1ea1n c\u0169ng c\u1ea7n s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng l\u1edbn. H\u01a1n h\u1ebft, v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ng\u00e0y c\u00e0ng quy m\u00f4 v\u00e0 ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 l\u1edbn h\u01a1n kh\u00f4ng c\u00f3 b\u0103ng th\u00f4ng n\u00e0o l\u1edbn h\u01a1n 1 TBps v\u00e0 c\u1ea7n n\u00ean c\u00f3 bi\u1ec7n ph\u00e1p kh\u00e1c \u0111\u1ec3 b\u1ea3o v\u1ec7.<\/p>\n<p>M\u1eb7c d\u00f9 v\u1eady, vi\u1ec7c t\u0103ng c\u01b0\u1eddng th\u00eam b\u0103ng th\u00f4ng d\u1ef1 ph\u00f2ng l\u00e0 bi\u1ec7n ph\u00e1p c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ea5n c\u00f4ng, cung c\u1ea5p th\u00eam th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 \u1ee9ng ph\u00f3 v\u1edbi t\u1ea5n c\u00f4ng DDoS.<\/p>\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng Anycast Network Diffusion<\/h3>\n<div id=\"attachment_4438\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4438\" class=\"size-full wp-image-4438\" src=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion.png.webp\" alt=\"Anycast Network Diffusion\" width=\"1200\" height=\"628\" srcset=\"https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion.png.webp 1200w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion-300x157.png.webp 300w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion-1024x536.png.webp 1024w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion-150x79.png.webp 150w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion-768x402.png.webp 768w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion-1170x612.png.webp 1170w, https:\/\/dncloud.net\/blog\/wp-content\/smush-webp\/Anycast-Network-Diffusion-585x306.png.webp 585w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" data-smush-webp-fallback=\"{&quot;src&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion.png&quot;,&quot;srcset&quot;:&quot;https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion.png 1200w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion-300x157.png 300w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion-1024x536.png 1024w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion-150x79.png 150w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion-768x402.png 768w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion-1170x612.png 1170w, https:\\\/\\\/dncloud.net\\\/blog\\\/wp-content\\\/uploads\\\/Anycast-Network-Diffusion-585x306.png 585w&quot;}\" \/><p id=\"caption-attachment-4438\" class=\"wp-caption-text\">Anycast Network Diffusion<\/p><\/div>\n<p>\u00c1p d\u1ee5ng bi\u1ec7n ph\u00e1p\u00a0 Anycast Network Diffusion \u0111\u1ec3 ph\u00e2n t\u00e1n l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng qua m\u1ea1ng c\u00e1c server \u0111\u1ebfn \u0111i\u1ec3m l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m\u00a0 \u0111\u00edch ph\u00e2n t\u00e1n kh\u00f4ng t\u1eadp trung v\u00e0o m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t t\u1eeb \u0111\u00f3 gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS. Tuy nhi\u00ean, bi\u00ean ph\u00e1p n\u00e0y c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o quy m\u00f4 v\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a Anycast.<\/p>\n<h2 id=\"cach-giai-quyet-tot-nhat-khi-web-bi-tan-cong-ddos\" class=\"wp-block-heading ftwp-heading\">C\u00e1ch gi\u1ea3i quy\u1ebft t\u1ed1t nh\u1ea5t khi web b\u1ecb t\u1ea5n c\u00f4ng DDoS<\/h2>\n<ul>\n<li>Li\u00ean h\u1ec7 v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 ch\u1ed1ng DDoS khi b\u1ecb t\u1ea5n c\u00f4ng \u0111\u1ec3 k\u1ecbp th\u1eddi ph\u00e1t hi\u1ec7n v\u00e0 x\u1eed l\u00fd c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u00e1t sinh.<\/li>\n<li>B\u1ed1 tr\u00ed nh\u00e2n s\u1ef1 c\u00f3 bi\u1ec7n ph\u00e1p tr\u01b0\u1edbc khi b\u1ecb t\u1ea5n c\u00f4ng DDoS<\/li>\n<li>Li\u00ean l\u1ea1c v\u1edbi nh\u00e0 cung c\u1ea5p Internet (ISP) \u0111\u1ec3 gi\u1ea3m thi\u1ec3u l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i \u0111\u1ebfn website<\/li>\n<li>Li\u00ean l\u1ea1c v\u1edbi nh\u00e0 cung c\u1ea5p hosting m\u00e0 b\u1ea1n s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft nhanh nh\u1ea5t<\/li>\n<li>Li\u00ean h\u1ec7 v\u1edbi c\u00e1c chuy\u00ean gia n\u1ebfu c\u00e1c bi\u1ec7n ph\u00e1p tr\u00ean ch\u01b0a th\u1ef1c s\u1ef1 hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<h2>L\u1eddi k\u1ebft<\/h2>\n<p>B\u00e0i vi\u1ebft tr\u00ean \u0111\u00e3 gi\u00fap b\u1ea1n \u0111\u01b0\u1ee3c ph\u1ea7n n\u00e0o gi\u1ea3i \u0111\u00e1p th\u1eafc m\u1eafc DDoS l\u00e0 g\u00ec? V\u00e0 bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng DDoS. N\u1ebfu c\u00f3 th\u1eafc m\u1eafc g\u00ec b\u1ea1n h\u00e3y \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn b\u00ean d\u01b0\u1edbi <strong>DNCLOUD<\/strong> s\u1ebd gi\u1ea3i \u0111\u00e1p th\u1eafc m\u1eafc nhanh nh\u1ea5t \u0111\u1ebfn cho b\u1ea1n. V\u00e0 \u0111\u1eebng qu\u00ean gh\u00e9 <a href=\"https:\/\/dncloud.net\/blog\/\">Blog<\/a> c\u1ee7a <strong>DNCLOUD<\/strong> \u0111\u1ec3 \u0111\u1ecdc nhi\u1ec1u b\u00e0i vi\u1ebft hay h\u01a1n nh\u00e9.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cu\u1ed9c t\u1ea5n c\u00f4ng DDoS c\u1ef1c k\u1ef3 nguy hi\u1ec3m v\u00e0 li\u00ean lu\u1ef5 kh\u00f4ng ch\u1ec9 b\u1ecb \u1ea3nh h\u01b0\u1edfng&hellip;<\/p>\n","protected":false},"author":1,"featured_media":4441,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"categories":[132],"tags":[],"class_list":["post-4425","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/posts\/4425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/comments?post=4425"}],"version-history":[{"count":0,"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/posts\/4425\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/media\/4441"}],"wp:attachment":[{"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/media?parent=4425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/categories?post=4425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dncloud.net\/blog\/wp-json\/wp\/v2\/tags?post=4425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}