{"id":9839,"date":"2019-11-15T17:49:18","date_gmt":"2019-11-15T10:49:18","guid":{"rendered":""},"modified":"2024-06-07T16:11:46","modified_gmt":"2024-06-07T09:11:46","slug":"dns-flood-la-gi-tan-cong-dns-flood-ddos","status":"publish","type":"post","link":"https:\/\/vnso.vn\/en\/dns-flood-la-gi-tan-cong-dns-flood-ddos\/","title":{"rendered":"DNS Flood l\u00e0 g\u00ec? T\u1ea5n c\u00f4ng DNS Flood DDoS"},"content":{"rendered":"<h2 style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng nh\u1eb1m qu\u00e1 t\u1ea3i v\u00e0 \u00e1p \u0111\u1ea3o m\u00e1y ch\u1ee7 DNS m\u1ee5c ti\u00eau<\/strong><\/span><\/h2>\n<h3 style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>T\u1ea5n c\u00f4ng DNS Flood l\u00e0 c\u00e1i g\u00ec?<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">DNS l\u00e0 c\u00e1c \u201cdanh b\u1ea1\u201d \u0111i\u1ec7n t\u1eed c\u1ee7a Internet. Ch\u00fang l\u00e0 con \u0111\u01b0\u1eddng th\u00f4ng qua \u0111\u00f3 c\u00e1c thi\u1ebft b\u1ecb Internet c\u00f3 th\u1ec3 tra c\u1ee9u c\u00e1c m\u00e1y ch\u1ee7 web. C\u1ee5 th\u1ec3 Internet.DNS flood l\u00e0 m\u1ed9t ki\u1ec3u t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS). Trong \u0111\u00f3, k\u1ebb t\u1ea5n c\u00f4ng qu\u00e1 t\u1ea3i m\u00e1y ch\u1ee7 DNS c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3. M\u1ee5c \u0111\u00edch l\u00e0 l\u00e0m ph\u00e1 v\u1ee1 \u0111\u1ed9 ph\u00e2n gi\u1ea3i DNS cho mi\u1ec1n \u0111\u00f3. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 t\u00ecm th\u1ea5y trong \u201cdanh b\u1ea1\u201d. N\u00f3 kh\u00f4ng th\u1ec3 tra c\u1ee9u \u0111\u1ecba ch\u1ec9 \u0111\u1ec3 th\u1ef1c hi\u1ec7n cu\u1ed9c g\u1ecdi cho m\u1ed9t t\u00e0i nguy\u00ean c\u1ee5 th\u1ec3. B\u1eb1ng c\u00e1ch ph\u00e1 v\u1ee1 ph\u00e2n gi\u1ea3i DNS, cu\u1ed9c t\u1ea5n c\u00f4ng DNS flood s\u1ebd l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p c\u1ee7a trang website, API ho\u1eb7c \u1ee9ng d\u1ee5ng web. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DNS flood c\u00f3 th\u1ec3 kh\u00f3 ph\u00e2n bi\u1ec7t v\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn th\u00f4ng th\u01b0\u1eddng. B\u1edfi l\u01b0u l\u01b0\u1ee3ng l\u1edbn truy c\u1eadp th\u01b0\u1eddng \u0111\u1ebfn t\u1eeb v\u00f4 s\u1ed1 v\u1ecb tr\u00ed. Truy v\u1ea5n c\u00e1c h\u1ed3 s\u01a1 th\u1ef1c tr\u00ean mi\u1ec1n, b\u1eaft ch\u01b0\u1edbc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.cloudflare.com\/img\/learning\/ddos\/dns-flood-ddos-attack\/dns-flood-ddos-attack-diagram.png\" alt=\"DNS Flood DDoS Attack Thu\u00ea M\u00e1y Ch\u1ee7\" width=\"1435\" height=\"957\" \/><\/span><\/p>\n<h2 style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DNS flood ho\u1ea1t \u0111\u1ed9ng?<\/strong><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Ch\u1ee9c n\u0103ng c\u1ee7a DNS \u0111\u01b0\u1ee3c d\u1ecbch t\u1eeb c\u00e1i t\u00ean d\u1ec5 nh\u1edb (v\u00ed d\u1ee5 example.com). \u0110\u1ecba ch\u1ec9 kh\u00f3 nh\u1edb c\u1ee7a c\u00e1c web servers (v\u00ed d\u1ee5 192.168.0.1). Do \u0111\u00f3, vi\u1ec7c t\u1ea5n c\u00f4ng th\u00e0nh c\u00f4ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng DNS khi\u1ebfn h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng Internet. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DNS flood t\u1ea1o th\u00e0nh m\u1ed9t lo\u1ea1i t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean DNS t\u01b0\u01a1ng \u0111\u1ed1i m\u1edbi. V\u1edbi s\u1ef1 gia t\u0103ng c\u1ee7a c\u00e1c botnet Internet of Things (IoT) khi\u1ebfn b\u0103ng th\u00f4ng cao tr\u00f4ng nh\u01b0 Mirai. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DNS Flood s\u1eed d\u1ee5ng c\u00e1c k\u1ebft n\u1ed1i b\u0103ng th\u00f4ng cao c\u1ee7a camera IP. Ngo\u00e0i ra th\u00eam c\u00e1c \u0111\u1ea7u ghi DVR v\u00e0 c\u00e1c thi\u1ebft b\u1ecb IoT kh\u00e1c. Tr\u1ef1c ti\u1ebfp \u00e1p \u0111\u1ea3o c\u00e1c servers DNS c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p l\u1edbn. Kh\u1ed1i l\u01b0\u1ee3ng y\u00eau c\u1ea7u t\u1eeb c\u00e1c thi\u1ebft b\u1ecb IoT \u00e1p \u0111\u1ea3o c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 cung c\u1ea5p DNS. Ng\u0103n ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p truy c\u1eadp v\u00e0o server DNS c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DNS flood kh\u00e1c v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng khu\u1ebfch \u0111\u1ea1i DNS. Kh\u00f4ng gi\u1ed1ng nh\u01b0 cu\u1ed9c t\u1ea5n c\u00f4ng DNS flood. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng khu\u1ebfch \u0111\u1ea1i DNS ph\u1ea3n \u00e1nh v\u00e0 khu\u1ebfch \u0111\u1ea1i l\u01b0u l\u01b0\u1ee3ng ra kh\u1ecfi c\u00e1c servers DNS kh\u00f4ng b\u1ea3o m\u1eadt. M\u1ee5c \u0111\u00edch che gi\u1ea5u ngu\u1ed3n g\u1ed1c c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng v\u00e0 t\u0103ng hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng khu\u1ebfch \u0111\u1ea1i DNS s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb c\u00f3 k\u1ebft n\u1ed1i b\u0103ng th\u00f4ng nh\u1ecf h\u01a1n. Th\u1ef1c hi\u1ec7n nhi\u1ec1u y\u00eau c\u1ea7u \u0111\u1ebfn c\u00e1c servers DNS kh\u00f4ng b\u1ea3o <\/span><span style=\"color: #000000;\">m\u1eadt. <\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">C\u00e1c thi\u1ebft b\u1ecb th\u1ef1c hi\u1ec7n nhi\u1ec1u y\u00eau c\u1ea7u nh\u1ecf \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3n ghi DNS r\u1ea5t l\u1edbn. Nh\u01b0ng khi th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u, k\u1ebb t\u1ea5n c\u00f4ng gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 ph\u1ea3n h\u1ed3i l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a n\u1ea1n nh\u00e2n d\u1ef1 \u0111\u1ecbnh. Vi\u1ec7c khu\u1ebfch \u0111\u1ea1i cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng l\u1ea5y ra c\u00e1c m\u1ee5c ti\u00eau l\u1edbn h\u01a1n.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m nh\u1eb9 cu\u1ed9c t\u1ea5n c\u00f4ng DNS Flood?<\/strong><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">DNS floods th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i t\u1eeb c\u00e1c ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean khu\u1ebfch \u0111\u1ea1i truy\u1ec1n th\u1ed1ng. V\u1edbi c\u00e1c b\u0103ng th\u00f4ng botnet cao c\u00f3 th\u1ec3 truy c\u1eadp d\u1ec5 d\u00e0ng. B\u00e2y gi\u1edd, k\u1ebb t\u1ea5n c\u00f4ng \u0111\u1eb7t ra m\u1ee5c ti\u00eau t\u1ed5 ch\u1ee9c l\u1edbn h\u01a1n. Cho \u0111\u1ebfn khi c\u00e1c thi\u1ebft b\u1ecb IoT b\u1ecb <a style=\"color: #000000;\" href=\"https:\/\/thuemaychudell.com\/\">x\u00e2m nh\u1eadp<\/a> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ho\u1eb7c thay th\u1ebf. C\u00e1ch duy nh\u1ea5t \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y l\u00e0 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng DNS l\u1edbn, ph\u00e2n t\u00e1n cao. C\u00f3 th\u1ec3 gi\u00e1m s\u00e1t, h\u1ea5p th\u1ee5 v\u00e0 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng trong th\u1eddi gian hi\u1ec7n t\u1ea1i.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><img decoding=\"async\" class=\"alignnone size-full wp-image-7375\" src=\"https:\/\/vnso.vn\/wp-content\/uploads\/2019\/10\/thue-may-chu-vat-ly.jpg\" alt=\"thue may chu vat ly\" width=\"1827\" height=\"342\" \/><\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng nh\u1eb1m qu\u00e1 t\u1ea3i v\u00e0 \u00e1p \u0111\u1ea3o m\u00e1y ch\u1ee7 DNS m\u1ee5c ti\u00eau T\u1ea5n c\u00f4ng DNS Flood l\u00e0 c\u00e1i g\u00ec? DNS l\u00e0 c\u00e1c \u201cdanh b\u1ea1\u201d \u0111i\u1ec7n t\u1eed c\u1ee7a Internet. Ch\u00fang l\u00e0 con \u0111\u01b0\u1eddng th\u00f4ng qua \u0111\u00f3 c\u00e1c thi\u1ebft b\u1ecb Internet c\u00f3 th\u1ec3 tra c\u1ee9u c\u00e1c m\u00e1y ch\u1ee7 web. C\u1ee5 th\u1ec3 Internet.DNS flood l\u00e0 [&hellip;]<\/p>","protected":false},"author":1,"featured_media":11373,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[156],"tags":[154,175,122,60],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.3 (Yoast SEO v22.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DNS Flood l\u00e0 g\u00ec? T\u1ea5n c\u00f4ng DNS Flood DDoS<\/title>\n<meta name=\"description\" content=\"DNS l\u00e0 c\u00e1c \u201cdanh b\u1ea1\u201d \u0111i\u1ec7n t\u1eed c\u1ee7a Internet. 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Ch\u00fang l\u00e0 con \u0111\u01b0\u1eddng th\u00f4ng qua \u0111\u00f3 c\u00e1c thi\u1ebft b\u1ecb Internet c\u00f3 th\u1ec3 tra c\u1ee9u c\u00e1c m\u00e1y ch\u1ee7 web.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vnso.vn\/en\/dns-flood-la-gi-tan-cong-dns-flood-ddos\/\" \/>\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=\"2019-11-15T10:49:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-07T09:11:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vnso.vn\/wp-content\/uploads\/2019\/11\/dns-flood-ddos-attack-thue-may-chu-vnso.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"850\" \/>\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\/dns-flood-la-gi-tan-cong-dns-flood-ddos\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/vnso.vn\/dns-flood-la-gi-tan-cong-dns-flood-ddos\/\"},\"author\":{\"name\":\"quocvu\",\"@id\":\"https:\/\/vnso.vn\/#\/schema\/person\/d2e01da61bbe4e9cdad491a13585c000\"},\"headline\":\"DNS Flood l\u00e0 g\u00ec? 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