{"id":9830,"date":"2019-10-01T18:15:45","date_gmt":"2019-10-01T11:15:45","guid":{"rendered":""},"modified":"2024-06-07T16:11:47","modified_gmt":"2024-06-07T09:11:47","slug":"udp-flood-attack-la-gi-co-che-tan-cong-ddos-ra-sao","status":"publish","type":"post","link":"https:\/\/vnso.vn\/en\/udp-flood-attack-la-gi-co-che-tan-cong-ddos-ra-sao\/","title":{"rendered":"UDP flood attack l\u00e0 g\u00ec? C\u01a1 ch\u1ebf t\u1ea5n c\u00f4ng ddos ra sao?"},"content":{"rendered":"

1. T\u1ea5n c\u00f4ng UDP FLood l\u00e0 g\u00ec? <\/strong><\/span><\/h2>\n

T\u1ea5n c\u00f4ng UDP FLood ch\u00ednh l\u00e0 m\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng Ddos. Trong \u0111\u00f3 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c packets User Datagram Protocol (UDP) \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn server. M\u1ee5c ti\u00eau nh\u1eb1m \u00e1p \u0111\u1ea3o kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 ph\u1ea3n h\u1ed3i c\u1ee7a thi\u1ebft b\u1ecb. Firewall b\u1ea3o v\u1ec7 server m\u1ee5c ti\u00eau c\u0169ng c\u00f3 th\u1ec3 b\u1ecb c\u1ea1n ki\u1ec7t do UDP Flood. D\u1eabn \u0111\u1ebfn Ddos v\u1edbi l\u01b0u l\u01b0\u1ee3ng 1 c\u00e1ch h\u1ee3p ph\u00e1p.<\/span><\/p>\n

2. L\u00e0m th\u1ebf n\u00e0o t\u1ea5n c\u00f4ng UDP Flood ?<\/strong><\/span><\/h2>\n

T\u1ea5n c\u00f4ng UDP b\u1eb1ng c\u00e1ch kh\u00e1i th\u00e1c c\u00e1c b\u01b0\u1edbc m\u00e0 server th\u1ef1c hi\u1ec7n. Khi n\u00f3 ph\u1ea3n h\u1ed3i packet UDP \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn m\u1ed9t trong s\u1ed1 c\u00e1c port c\u1ee7a Client. Trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng server nh\u1eadn packet UDP t\u1ea1i 1 port c\u1ee5 th\u1ec3. \u0110\u01b0\u1ee3c ph\u1ea3n h\u1ed3i qua 2 b\u01b0\u1edbc nh\u01b0 sau:<\/span><\/p>\n

B\u01b0\u1edbc 1:<\/strong> Tr\u01b0\u1edbc ti\u00ean, server<\/a> ki\u1ec3m tra xem c\u00f3 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh n\u00e0o \u0111ang ch\u1ea1y hay kh\u00f4ng. Hi\u1ec7n t\u1ea1i \u0111ang l\u1eafng nghe c\u00e1c port n\u00e0o \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh.<\/span><\/p>\n

B\u01b0\u1edbc 2:<\/strong> N\u1ebfu kh\u00f4ng c\u00f3 ch\u01b0\u01a1ng tr\u00ecnh n\u00e0o nh\u1eadn packet t\u1ea1i port. L\u00fac n\u00e0y server s\u1ebd ph\u1ea3n h\u1ed3i v\u1edbi packet ICMP (ping) \u0111\u1ec3 th\u00f4ng b\u00e1o cho ng\u01b0\u1eddi g\u1eedi r\u1eb1ng \u0111\u00edch kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/span><\/p>\n

\"UDP

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0UDP flood attack<\/span><\/em><\/p><\/div>\n

T\u1ea5n c\u00f4ng UDP flood \u0111\u01b0\u1ee3c ngh\u0129 \u0111\u1ebfn trong b\u1ed1i c\u1ea3nh c\u00e1c cu\u1ed9c g\u1ecdi \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a nh\u00e2n vi\u00ean l\u1ec5 t\u00e2n kh\u00e1ch s\u1ea1n. \u0110\u1ea7u ti\u00ean, nh\u00e2n vi\u00ean ti\u1ebfp t\u00e2n nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t cu\u1ed9c g\u1ecdi \u0111i\u1ec7n tho\u1ea1i trong \u0111\u00f3 ng\u01b0\u1eddi g\u1ecdi y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i cu\u1ed9c g\u1ecdi v\u1edbi m\u1ed9t ph\u00f2ng c\u1ee5 th\u1ec3. Sau \u0111\u00f3 nh\u00e2n vi\u00ean ti\u1ebfp t\u00e2n c\u1ea7n xem qua danh s\u00e1ch t\u1ea5t c\u1ea3 c\u00e1c ph\u00f2ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00e1ch c\u00f3 m\u1eb7t trong ph\u00f2ng v\u00e0 s\u1eb5n s\u00e0ng nh\u1eadn cu\u1ed9c g\u1ecdi. Khi nh\u00e2n vi\u00ean l\u1ec5 t\u00e2n bi\u1ebft r\u1eb1ng kh\u00f4ng c\u00f3 kh\u00e1ch trong ph\u00f2ng \u0111\u1ec3 nh\u1eadn cu\u1ed9c g\u1ecdi. H\u1ecd ph\u1ea3i g\u1ecdi l\u1ea1i cho ng\u01b0\u1eddi g\u1ecdi, n\u00f3i r\u1eb1ng kh\u00e1ch kh\u00f4ng c\u00f3 \u1edf ph\u00f2ng \u0111\u1ec3 nh\u1eadn cu\u1ed9c g\u1ecdi. N\u1ebfu c\u00e1c line \u0111i\u1ec7n tho\u1ea1i s\u00e1ng l\u00ean c\u00f9ng l\u00fac v\u1edbi c\u00e1c y\u00eau c\u1ea7u t\u01b0\u01a1ng t\u1ef1 th\u00ec ch\u00fang s\u1ebd nhanh ch\u00f3ng tr\u1edf n\u00ean qu\u00e1 t\u1ea3i.<\/span><\/p>\n

Khi m\u1ed7i packet UDP \u0111\u01b0\u1ee3c m\u00e1y ch\u1ee7<\/a> ti\u1ebfp nh\u1eadn, n\u00f3 ph\u1ea3i tr\u1ea3i qua c\u00e1c b\u01b0\u1edbc \u0111\u1ec3 x\u1eed l\u00fd y\u00eau c\u1ea7u. S\u1eed d\u1ee5ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u1ee7a server cho qu\u00e1 tr\u00ecnh x\u1eed l\u00fd. Khi c\u00e1c packets UDP \u0111\u01b0\u1ee3c g\u1eedi \u0111i, m\u1ed7i packets s\u1ebd bao g\u1ed3m \u0111\u1ecba ch\u1ec9 IP c\u1ee7a thi\u1ebft b\u1ecb ngu\u1ed3n. Trong ki\u1ec3u t\u1ea5n c\u00f4ng DDoS n\u00e0y, k\u1ebb t\u1ea5n c\u00f4ng th\u01b0\u1eddng kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP th\u1ef1c m\u00e0 thay v\u00e0o \u0111\u00f3 s\u1ebd d\u00f9ng \u0111\u1ecba ch\u1ec9 IP gi\u1ea3 m\u1ea1o ngu\u1ed3n c\u1ee7a c\u00e1c packets UDP. Ng\u0103n ch\u1eb7n v\u1ecb tr\u00ed th\u1eadt c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng b\u1ecb l\u1ed9 v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng h\u00f2a l\u1eabn c\u00e1c g\u00f3i ph\u1ea3n h\u1ed3i t\u1eeb m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau.<\/span><\/p>\n

Do server m\u1ee5c ti\u00eau s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean \u0111\u1ec3 ki\u1ec3m tra v\u00e0 ph\u1ea3n h\u1ed3i t\u1eebng packets UDP \u0111\u00e3 nh\u1eadn. T\u00e0i nguy\u00ean c\u1ee7a server m\u1ee5c ti\u00eau c\u00f3 th\u1ec3 nhanh ch\u00f3ng c\u1ea1n ki\u1ec7t khi nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c packets UDP. K\u1ebft qu\u1ea3 vi\u1ec7c t\u1ea5n c\u00f4ng Ddos \u0111\u1ed1i v\u1edbi l\u01b0u l\u01b0\u1ee3ng b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n

3. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m t\u1ea5n c\u00f4ng UDP Flood?<\/strong><\/span><\/h2>\n

H\u1ea7u h\u1ebft c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a c\u00e1c packets ICMP. M\u1ed9t ph\u1ea7n \u0111\u1ec3 ph\u00e1 v\u1ee1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS y\u00eau c\u1ea7u ph\u1ea3n h\u1ed3i ICMP. Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ki\u1ec3u gi\u1ea3m thi\u1ec3u n\u00e0y l\u00e0 trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng, c\u00e1c packets h\u1ee3p ph\u00e1p c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1ecdc trong tr\u00ecnh n\u00e0y. N\u1ebfu cu\u1ed9c t\u1ea5n c\u00f4ng UDP flood v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ee7 l\u1edbn \u0111\u1ec3 c\u00e2n b\u1eb1ng tr\u1ea1ng th\u00e1i firewall c\u1ee7a server m\u1ee5c ti\u00eau. M\u1ecdi s\u1ef1 gi\u1ea3m thi\u1ec3u x\u1ea3y qu\u00e1 m\u1ee9c c\u1ee7a server kh\u00f4ng \u0111\u1ee7 x\u1ea3y ra t\u00ecnh tr\u1ea1ng ngh\u1ebdn n\u00fat c\u1ed5 chai t\u1eeb server m\u1ee5c ti\u00eau.<\/span><\/p>\n

Xem th\u00eam c\u00e1c g\u00f3i Thu\u00ea M\u00e1y Ch\u1ee7 t\u1ea1i VNSO<\/a><\/span><\/p>","protected":false},"excerpt":{"rendered":"

1. T\u1ea5n c\u00f4ng UDP FLood l\u00e0 g\u00ec? T\u1ea5n c\u00f4ng UDP FLood ch\u00ednh l\u00e0 m\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng Ddos. Trong \u0111\u00f3 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c packets User Datagram Protocol (UDP) \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn server. M\u1ee5c ti\u00eau nh\u1eb1m \u00e1p \u0111\u1ea3o kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 ph\u1ea3n h\u1ed3i c\u1ee7a thi\u1ebft b\u1ecb. Firewall b\u1ea3o v\u1ec7 server m\u1ee5c ti\u00eau […]<\/p>","protected":false},"author":1,"featured_media":11285,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[156],"tags":[154,94,122,60,164],"yoast_head":"\nUDP flood attack l\u00e0 g\u00ec? C\u01a1 ch\u1ebf t\u1ea5n c\u00f4ng ddos ra sao?<\/title>\n<meta name=\"description\" content=\"T\u1ea5n c\u00f4ng UDP FLood ch\u00ednh l\u00e0 m\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng Ddos. Trong \u0111\u00f3 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c packets User Datagram Protocol (UDP) \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn server.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vnso.vn\/en\/udp-flood-attack-la-gi-co-che-tan-cong-ddos-ra-sao\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"UDP flood attack l\u00e0 g\u00ec? C\u01a1 ch\u1ebf t\u1ea5n c\u00f4ng ddos ra sao?\" \/>\n<meta property=\"og:description\" content=\"T\u1ea5n c\u00f4ng UDP FLood ch\u00ednh l\u00e0 m\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng Ddos. Trong \u0111\u00f3 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c packets User Datagram Protocol (UDP) \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn server.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vnso.vn\/en\/udp-flood-attack-la-gi-co-che-tan-cong-ddos-ra-sao\/\" \/>\n<meta property=\"og:site_name\" content=\"C\u00d4NG NGH\u1ec6 VNSO\u2122\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/VNSO.VN\" \/>\n<meta property=\"article:published_time\" content=\"2019-10-01T11:15:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-07T09:11:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vnso.vn\/wp-content\/uploads\/2019\/10\/11.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"661\" \/>\n\t<meta property=\"og:image:height\" content=\"438\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"quocvu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"quocvu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/vnso.vn\/udp-flood-attack-la-gi-co-che-tan-cong-ddos-ra-sao\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/vnso.vn\/udp-flood-attack-la-gi-co-che-tan-cong-ddos-ra-sao\/\"},\"author\":{\"name\":\"quocvu\",\"@id\":\"https:\/\/vnso.vn\/#\/schema\/person\/d2e01da61bbe4e9cdad491a13585c000\"},\"headline\":\"UDP flood attack l\u00e0 g\u00ec? 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