{"id":477264,"date":"2023-08-09T09:09:43","date_gmt":"2023-08-09T09:09:43","guid":{"rendered":""},"modified":"2023-09-05T11:14:23","modified_gmt":"2023-09-05T11:14:23","slug":"flooding","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/flooding\/","title":{"rendered":"L\u0169 l\u1ee5t"},"content":{"rendered":"<p>L\u0169 l\u1ee5t, trong b\u1ed1i c\u1ea3nh m\u1ea1ng m\u00e1y t\u00ednh v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng internet, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t lo\u1ea1i t\u1ea5n c\u00f4ng \u0111\u1ed9c h\u1ea1i nh\u1eb1m m\u1ee5c \u0111\u00edch \u00e1p \u0111\u1ea3o h\u1ec7 th\u1ed1ng ho\u1eb7c m\u1ea1ng m\u1ee5c ti\u00eau v\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn, khi\u1ebfn n\u00f3 kh\u00f4ng th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. K\u1ef9 thu\u1eadt m\u1ea1nh m\u1ebd n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a trang web, m\u00e1y ch\u1ee7 ho\u1eb7c m\u1ea1ng, g\u00e2y ra t\u00ecnh tr\u1ea1ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 cho ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp lu\u00f4n l\u00e0 m\u1ed1i lo ng\u1ea1i \u0111\u1ed1i v\u1edbi b\u1ea3o m\u1eadt tr\u1ef1c tuy\u1ebfn v\u00e0 d\u1eabn \u0111\u1ebfn vi\u1ec7c ph\u00e1t tri\u1ec3n nhi\u1ec1u bi\u1ec7n ph\u00e1p \u0111\u1ed1i ph\u00f3 kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy gi\u1ed1ng nh\u01b0 m\u00e1y ch\u1ee7 proxy \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi OneProxy (oneproxy.pro).<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c l\u0169 l\u1ee5t v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 n\u00f3<\/h2>\n<p>Ngu\u1ed3n g\u1ed1c c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Internet. M\u1ed9t trong nh\u1eefng \u0111\u1ec1 c\u1eadp s\u1edbm nh\u1ea5t v\u1ec1 kh\u00e1i ni\u1ec7m l\u0169 l\u1ee5t xu\u1ea5t hi\u1ec7n v\u00e0o n\u0103m 1989 khi Robert Tappan Morris, m\u1ed9t sinh vi\u00ean t\u1ed1t nghi\u1ec7p t\u1ea1i \u0110\u1ea1i h\u1ecdc Cornell, ph\u00e1t h\u00e0nh Morris Worm kh\u00e9t ti\u1ebfng. M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp tr\u1ef1c ti\u1ebfp nh\u01b0ng s\u00e2u n\u00e0y \u0111\u00e3 v\u00f4 t\u00ecnh g\u00e2y ra t\u00ecnh tr\u1ea1ng t\u1eafc ngh\u1ebdn tr\u00ean di\u1ec7n r\u1ed9ng tr\u00ean internet b\u1eb1ng c\u00e1ch khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng trong h\u1ec7 th\u1ed1ng Unix. S\u1ef1 ki\u1ec7n n\u00e0y \u0111\u00e3 l\u00e0m d\u1ea5y l\u00ean m\u1ed1i quan t\u00e2m ng\u00e0y c\u00e0ng t\u0103ng trong vi\u1ec7c nghi\u00ean c\u1ee9u t\u00e1c \u0111\u1ed9ng ti\u1ec1m t\u00e0ng c\u1ee7a l\u0169 l\u1ee5t giao th\u00f4ng quy m\u00f4 l\u1edbn c\u00f3 ch\u1ee7 \u00fd, d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c k\u1ef9 thu\u1eadt l\u0169 l\u1ee5t ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 l\u0169 l\u1ee5t: M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1<\/h2>\n<p>L\u0169 l\u1ee5t \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 m\u1ed9t d\u1ea1ng t\u1ea5n c\u00f4ng DoS (T\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5), trong \u0111\u00f3 m\u1ee5c ti\u00eau ch\u00ednh l\u00e0 \u00e1p \u0111\u1ea3o t\u00e0i nguy\u00ean c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau, khi\u1ebfn h\u1ec7 th\u1ed1ng kh\u00f4ng ph\u1ea3n h\u1ed3i ho\u1eb7c kh\u00f4ng kh\u1ea3 d\u1ee5ng \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p. V\u1ec1 b\u1ea3n ch\u1ea5t, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp khai th\u00e1c kh\u1ea3 n\u0103ng h\u1eefu h\u1ea1n c\u1ee7a ph\u1ea7n c\u1ee9ng, ph\u1ea7n m\u1ec1m ho\u1eb7c c\u00e1c th\u00e0nh ph\u1ea7n m\u1ea1ng \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u g\u1eedi \u0111\u1ebfn, d\u1eabn \u0111\u1ebfn c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean. C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp, m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec1u c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 \u00fd ngh\u0129a ri\u00eang bi\u1ec7t.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a l\u0169 l\u1ee5t: L\u0169 l\u1ee5t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n<p>V\u1ec1 c\u1ed1t l\u00f5i, m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp nh\u1eb1m m\u1ee5c \u0111\u00edch l\u00e0m tr\u00e0n ng\u1eadp h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau v\u1edbi l\u01b0\u1ee3ng d\u1eef li\u1ec7u, y\u00eau c\u1ea7u ho\u1eb7c n\u1ed7 l\u1ef1c k\u1ebft n\u1ed1i qu\u00e1 m\u1ee9c. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng nhi\u1ec1u c\u00e1ch:<\/p>\n<ol>\n<li>\n<p><strong>L\u0169 Ping:<\/strong> \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c g\u1eedi m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u ti\u1ebfng vang ICMP (Giao th\u1ee9c tin nh\u1eafn \u0111i\u1ec1u khi\u1ec3n Internet) \u0111\u1ebfn m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau. M\u00e1y ch\u1ee7 \u0111ang b\u1eadn x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u n\u00e0y v\u00e0 g\u1eedi ph\u1ea3n h\u1ed3i n\u00ean kh\u00f4ng th\u1ec3 x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p.<\/p>\n<\/li>\n<li>\n<p><strong>L\u0169 SYN:<\/strong> Trong ki\u1ec3u t\u1ea5n c\u00f4ng n\u00e0y, k\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u k\u1ebft n\u1ed1i TCP (Giao th\u1ee9c \u0111i\u1ec1u khi\u1ec3n truy\u1ec1n) v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 ngu\u1ed3n gi\u1ea3 m\u1ea1o. H\u1ec7 th\u1ed1ng \u0111\u00edch ph\u00e2n b\u1ed5 t\u00e0i nguy\u00ean cho t\u1eebng y\u00eau c\u1ea7u nh\u01b0ng kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn t\u1eeb c\u00e1c ngu\u1ed3n gi\u1ea3 m\u1ea1o, d\u1eabn \u0111\u1ebfn c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean.<\/p>\n<\/li>\n<li>\n<p><strong>L\u0169 HTTP:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u HTTP \u0111\u1ebfn m\u00e1y ch\u1ee7 web, c\u1ed1 g\u1eafng l\u00e0m c\u1ea1n ki\u1ec7t kh\u1ea3 n\u0103ng x\u1eed l\u00fd ho\u1eb7c b\u0103ng th\u00f4ng c\u1ee7a n\u00f3.<\/p>\n<\/li>\n<li>\n<p><strong>Khu\u1ebfch \u0111\u1ea1i DNS:<\/strong> K\u1ef9 thu\u1eadt n\u00e0y t\u1eadn d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 DNS ph\u1ea3n h\u1ed3i v\u1edbi ph\u1ea3n h\u1ed3i l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi y\u00eau c\u1ea7u ban \u0111\u1ea7u, cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng ph\u00f3ng \u0111\u1ea1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u01b0\u1edbng v\u00e0o m\u1ee5c ti\u00eau.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a l\u0169 l\u1ee5t<\/h2>\n<p>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u0169 l\u1ee5t c\u00f3 chung m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh:<\/p>\n<ul>\n<li>\n<p><strong>C\u01b0\u1eddng \u0111\u1ed9:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp kh\u1ed5ng l\u1ed3, v\u01b0\u1ee3t xa kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u1ee7a m\u1ee5c ti\u00eau, d\u1eabn \u0111\u1ebfn c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean.<\/p>\n<\/li>\n<li>\n<p><strong>Ng\u1eabu nhi\u00ean:<\/strong> Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecba ch\u1ec9 ngu\u1ed3n ng\u1eabu nhi\u00ean ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt gi\u1ea3 m\u1ea1o IP \u0111\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c l\u1ecdc ho\u1eb7c ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n ph\u1ed1i:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1eeb m\u1ed9t ngu\u1ed3n duy nh\u1ea5t ho\u1eb7c t\u1eeb m\u1ed9t m\u1ea1ng ph\u00e2n t\u00e1n g\u1ed3m c\u00e1c m\u00e1y t\u00ednh b\u1ecb x\u00e2m nh\u1eadp, t\u1ea1o th\u00e0nh m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS (T\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n).<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i l\u0169 l\u1ee5t<\/h2>\n<p>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u0169 l\u1ee5t c\u00f3 nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau, m\u1ed7i h\u00ecnh th\u1ee9c \u0111\u1ec1u c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00e1c \u0111\u1ed9ng ri\u00eang. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i l\u0169 l\u1ee5t<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>L\u0169 l\u1ee5t ICMP<\/td>\n<td>\u00c1p \u0111\u1ea3o m\u1ee5c ti\u00eau b\u1eb1ng c\u00e1c y\u00eau c\u1ea7u ti\u1ebfng vang ICMP (ping).<\/td>\n<\/tr>\n<tr>\n<td>L\u0169 UDP<\/td>\n<td>L\u00e0m ng\u1eadp m\u1ee5c ti\u00eau b\u1eb1ng c\u00e1c g\u00f3i Giao th\u1ee9c g\u00f3i d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng (UDP).<\/td>\n<\/tr>\n<tr>\n<td>l\u0169 TCP<\/td>\n<td>T\u1eadp trung v\u00e0o vi\u1ec7c g\u1eedi m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c y\u00eau c\u1ea7u k\u1ebft n\u1ed1i TCP.<\/td>\n<\/tr>\n<tr>\n<td>l\u0169 DNS<\/td>\n<td>L\u00e0m qu\u00e1 t\u1ea3i c\u00e1c m\u00e1y ch\u1ee7 DNS v\u1edbi s\u1ed1 l\u01b0\u1ee3ng truy v\u1ea5n qu\u00e1 m\u1ee9c.<\/td>\n<\/tr>\n<tr>\n<td>L\u0169 HTTP<\/td>\n<td>L\u00e0m ng\u1eadp c\u00e1c m\u00e1y ch\u1ee7 web v\u1edbi c\u00e1c y\u00eau c\u1ea7u HTTP.<\/td>\n<\/tr>\n<tr>\n<td>L\u0169 SYN\/ACK<\/td>\n<td>T\u1ea5n c\u00f4ng m\u1ee5c ti\u00eau v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn g\u00f3i SYN\/ACK.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng l\u0169 l\u1ee5t, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>M\u1eb7c d\u00f9 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp v\u1ed1n c\u00f3 t\u00ednh \u0111\u1ed9c h\u1ea1i nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00e1c b\u00e0i ki\u1ec3m tra c\u0103ng th\u1eb3ng c\u00f3 gi\u00e1 tr\u1ecb \u0111\u1ec3 c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng v\u00e0 b\u1ea3o m\u1eadt x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c l\u1ed7 h\u1ed5ng. Th\u1eed nghi\u1ec7m th\u00e2m nh\u1eadp ho\u1eb7c hack c\u00f3 \u0111\u1ea1o \u0111\u1ee9c s\u1eed d\u1ee5ng c\u00e1c k\u1ecbch b\u1ea3n tr\u00e0n ng\u1eadp c\u00f3 ki\u1ec3m so\u00e1t \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i v\u00e0 c\u01a1 ch\u1ebf ph\u1ea3n h\u1ed3i c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p>Tuy nhi\u00ean, d\u01b0\u1edbi b\u00e0n tay c\u1ee7a nh\u1eefng k\u1ebb \u0111\u1ed9c h\u1ea1i, l\u0169 l\u1ee5t c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng:<\/p>\n<ul>\n<li>\n<p><strong>Th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp g\u00e2y ra th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng cho ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p, d\u1eabn \u0111\u1ebfn m\u1ea5t n\u0103ng su\u1ea5t, doanh thu v\u00e0 ni\u1ec1m tin c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n<\/li>\n<li>\n<p><strong>Vi ph\u1ea1m d\u1eef li\u1ec7u:<\/strong> Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp \u0111\u00f3ng vai tr\u00f2 \u0111\u00e1nh l\u1ea1c h\u01b0\u1edbng c\u00e1c h\u00e0nh vi vi ph\u1ea1m an ninh kh\u00e1c ho\u1eb7c c\u00e1c n\u1ed7 l\u1ef1c \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<\/ul>\n<p>\u0110\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u0169 l\u1ee5t, m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n:<\/p>\n<ul>\n<li>\n<p><strong>L\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp:<\/strong> Tri\u1ec3n khai c\u00e1c quy t\u1eafc l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp tr\u00ean t\u01b0\u1eddng l\u1eeda v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>Gi\u1edbi h\u1ea1n t\u1ef7 l\u1ec7:<\/strong> \u00c1p d\u1ee5ng gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 cho c\u00e1c y\u00eau c\u1ea7u g\u1eedi \u0111\u1ebfn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng m\u1ed9t ngu\u1ed3n n\u00e0o c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN):<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng CDN c\u00f3 th\u1ec3 gi\u00fap ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd, h\u1ea5p th\u1ee5 v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn \u0111\u01b0\u1ee3c m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 nh\u1eefng so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>L\u0169 l\u1ee5t<\/td>\n<td>M\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng DoS l\u00e0m cho\u00e1ng ng\u1ee3p m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp qu\u00e1 m\u1ee9c.<\/td>\n<\/tr>\n<tr>\n<td>DDoS (DoS ph\u00e2n t\u00e1n)<\/td>\n<td>M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb nhi\u1ec1u ngu\u1ed3n, khi\u1ebfn vi\u1ec7c gi\u1ea3m nh\u1eb9 tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n.<\/td>\n<\/tr>\n<tr>\n<td>DoS (T\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5)<\/td>\n<td>Thu\u1eadt ng\u1eef r\u1ed9ng cho b\u1ea5t k\u1ef3 cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0o l\u00e0m gi\u00e1n \u0111o\u1ea1n t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a d\u1ecbch v\u1ee5.<\/td>\n<\/tr>\n<tr>\n<td>gi\u1ea3 m\u1ea1o<\/td>\n<td>Gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 ngu\u1ed3n c\u1ee7a g\u00f3i tin \u0111\u1ec3 che gi\u1ea5u ngu\u1ed3n g\u1ed1c th\u1ef1c s\u1ef1 c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng.<\/td>\n<\/tr>\n<tr>\n<td>m\u1ea1ng botnet<\/td>\n<td>M\u1ea1ng g\u1ed3m c\u00e1c m\u00e1y t\u00ednh b\u1ecb x\u00e2m nh\u1eadp, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS v\u00e0 c\u00e1c t\u00e1c v\u1ee5 \u0111\u1ed9c h\u1ea1i kh\u00e1c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn l\u0169 l\u1ee5t<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, c\u00e1c k\u1ef9 thu\u1eadt v\u00e0 c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ec3 ti\u1ebfn h\u00e0nh c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp c\u0169ng t\u0103ng theo. T\u01b0\u01a1ng lai c\u1ee7a l\u0169 l\u1ee5t c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tinh vi v\u00e0 l\u00e9n l\u00fat h\u01a1n nh\u1eb1m khai th\u00e1c c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i. M\u1eb7t kh\u00e1c, nh\u1eefng ti\u1ebfn b\u1ed9 trong an ninh m\u1ea1ng, tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 h\u1ecdc m\u00e1y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c c\u01a1 ch\u1ebf ph\u00f2ng th\u1ee7 m\u1ea1nh m\u1ebd v\u00e0 th\u00edch \u1ee9ng h\u01a1n tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u0169 l\u1ee5t.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft v\u1edbi l\u0169 l\u1ee5t nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy, gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy (oneproxy.pro) cung c\u1ea5p, c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp. B\u1eb1ng c\u00e1ch \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00edch, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3:<\/p>\n<ul>\n<li>\n<p><strong>L\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u1ecdc v\u00e0 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u00e1ng ng\u1edd ho\u1eb7c \u0111\u1ed9c h\u1ea1i, gi\u1ea3m t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 ph\u1ee5 tr\u1ee3, ng\u0103n kh\u00f4ng cho b\u1ea5t k\u1ef3 m\u00e1y ch\u1ee7 n\u00e0o b\u1ecb qu\u00e1 t\u1ea3i.<\/p>\n<\/li>\n<li>\n<p><strong>\u1ea8n danh:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u1ea9n \u0111\u1ecba ch\u1ec9 IP th\u1ef1c c\u1ee7a m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau, khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng kh\u00f3 x\u00e1c \u0111\u1ecbnh m\u1ee5c ti\u00eau h\u01a1n.<\/p>\n<\/li>\n<\/ul>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp, b\u1ea3o v\u1ec7 DDoS v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p m\u00e1y ch\u1ee7 proxy, h\u00e3y tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/ddos-protection\/\" target=\"_new\" rel=\"noopener\">B\u1ea3o v\u1ec7 v\u00e0 gi\u1ea3m thi\u1ec3u DDoS | OneProxy<\/a><\/li>\n<li><a href=\"https:\/\/owasp.org\/www-community\/attacks\/Denial_of_Service\" target=\"_new\" rel=\"noopener nofollow\">H\u01b0\u1edbng d\u1eabn ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS c\u1ee7a OWASP<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/understanding-denial-of-service-attacks\/index.html\" target=\"_new\" rel=\"noopener nofollow\">Cisco: T\u00ecm hi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/a><\/li>\n<li><a href=\"https:\/\/www.cert.gov\/sites\/default\/files\/dos-quick-guide.pdf\" target=\"_new\" rel=\"noopener nofollow\">CERT: H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 DDoS<\/a><\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp g\u00e2y ra m\u1ed1i \u0111e d\u1ecda \u0111\u00e1ng k\u1ec3 cho s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 t\u00ednh s\u1eb5n c\u00f3 c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn. Khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n, nh\u1eefng k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng c\u0169ng \u0111\u00f2i h\u1ecfi c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c bi\u1ec7n ph\u00e1p \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi c\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy, \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c h\u00e0nh vi \u0111\u1ed9c h\u1ea1i n\u00e0y. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp v\u00e0 s\u1eed d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 b\u1ea3n th\u00e2n v\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u1ee7a m\u00ecnh t\u1ed1t h\u01a1n kh\u1ecfi nh\u1eefng t\u00e1c \u0111\u1ed9ng gi\u00e1n \u0111o\u1ea1n c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp.<\/p>","protected":false},"featured_media":477265,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477264","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Flooding: Understanding the Phenomenon and its Implications<\/mark>","faq_items":[{"question":"What is flooding?","answer":"<p>Flooding, in the context of computer networks and internet infrastructure, refers to a type of malicious attack aimed at overwhelming a target system or network with a large volume of traffic, rendering it unable to function properly. This aggressive technique is often employed to disrupt the normal operations of a website, server, or network, causing denial of service for legitimate users.<\/p>"},{"question":"How did flooding attacks originate?","answer":"<p>The origins of flooding attacks can be traced back to the early days of the internet. One of the earliest mentions of flooding as a concept appeared in 1989 when Robert Tappan Morris released the infamous Morris Worm, unintentionally causing widespread congestion on the internet. This event sparked an increased interest in studying the potential effects of intentional large-scale traffic floods, leading to the development of more sophisticated flooding techniques.<\/p>"},{"question":"How does flooding work?","answer":"<p>Flooding attacks aim to flood a target system with an excessive amount of data, requests, or connection attempts. This can be achieved through various methods, such as Ping Flood, SYN Flood, HTTP Flood, and DNS Amplification. Attackers exploit the finite capacity of hardware, software, or network components to handle incoming requests, leading to resource exhaustion.<\/p>"},{"question":"What are the key features of flooding attacks?","answer":"<p>Flooding attacks share several key features, including their intensity, randomness, and potential for being distributed. These attacks generate an overwhelming volume of traffic, often using random source addresses or IP spoofing to make it challenging to filter or block the malicious traffic.<\/p>"},{"question":"What are the types of flooding attacks?","answer":"<p>There are several types of flooding attacks, each with its characteristics and impact. Common types include ICMP Flood, UDP Flood, TCP Flood, DNS Flood, HTTP Flood, and SYN\/ACK Flood. Each type targets specific vulnerabilities and components of a system.<\/p>"},{"question":"Can flooding attacks be used for beneficial purposes?","answer":"<p>Yes, in controlled scenarios, flooding attacks can serve as stress tests for network and security administrators to identify and address vulnerabilities. Ethical hacking or penetration testing employs controlled flooding scenarios to assess a system's resilience and response mechanisms.<\/p>"},{"question":"What problems can flooding attacks cause?","answer":"<p>Flooding attacks can lead to significant problems, including downtime for legitimate users, lost productivity, revenue, and customer trust. In some cases, flooding attacks can also serve as diversions for other security breaches or data theft attempts.<\/p>"},{"question":"How can organizations protect against flooding attacks?","answer":"<p>To combat flooding attacks, organizations can implement several measures, such as traffic filtering, rate limiting, and using Content Delivery Networks (CDNs) to distribute traffic and absorb attacks before they reach the target server.<\/p>"},{"question":"What is the future outlook for flooding attacks?","answer":"<p>As technology advances, flooding attacks may become more sophisticated, leveraging emerging technologies. However, advancements in network security, artificial intelligence, and machine learning can lead to more robust and adaptive defense mechanisms against flooding attacks.<\/p>"},{"question":"How can proxy servers help mitigate the impact of flooding attacks?","answer":"<p>Proxy servers, like those provided by OneProxy (oneproxy.pro), can play a crucial role in mitigating the impact of flooding attacks. They can filter traffic, distribute incoming requests across multiple backend servers, and provide anonymity by hiding the actual IP addresses of target servers.<\/p><p>For more information about flooding attacks, DDoS protection, and proxy server solutions, please refer to the related links provided in the article above. Stay informed and secure in the digital landscape.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477264\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477265"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}