{"id":3510,"date":"2013-08-23T21:11:18","date_gmt":"2013-08-23T21:11:18","guid":{"rendered":"https:\/\/live-infoblox-blog.pantheonsite.io\/?p=3510"},"modified":"2020-05-06T10:31:38","modified_gmt":"2020-05-06T17:31:38","slug":"an-example-of-massive-dns-amplification","status":"publish","type":"post","link":"https:\/\/www.infoblox.com\/blog\/ipv6-coe\/an-example-of-massive-dns-amplification\/","title":{"rendered":"An Example of (Massive) DNS Amplification"},"content":{"rendered":"

% dig @sfba.sns-pb.isc.org. any isc.org. +norec +dnssec +qr<\/p>\n

; <<>> DiG 9.8.3-P1 <<>> @sfba.sns-pb.isc.org. any isc.org. +norec +dnssec +qr<\/p>\n

; (2 servers found)<\/p>\n

;; global options: +cmd<\/p>\n

;; Sending:<\/p>\n

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37911<\/p>\n

;; flags:; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1<\/p>\n

;; OPT PSEUDOSECTION:<\/p>\n

; EDNS: version: 0, flags: do; udp: 4096<\/p>\n

;; QUESTION SECTION:<\/p>\n

;isc.org. IN ANY<\/p>\n

;; Got answer:<\/p>\n

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37911<\/p>\n

;; flags: qr aa; QUERY: 1, ANSWER: 26, AUTHORITY: 0, ADDITIONAL: 15<\/p>\n

;; OPT PSEUDOSECTION:<\/p>\n

; EDNS: version: 0, flags: do; udp: 4096<\/p>\n

;; QUESTION SECTION:<\/p>\n

;isc.org. IN ANY<\/p>\n

;; ANSWER SECTION:<\/p>\n

isc.org. 7200 IN SOA ns-int.isc.org. hostmaster.isc.org. 2013082000 7200 3600 24796800 3600<\/p>\n

isc.org. 7200 IN RRSIG SOA 5 2 7200 20130918233243 20130819233243 50012 isc.org. t9L\/wDGVhEISW\/digwNQceDdgY74QhCRt7aZaOTfC\/iSyIeCGH7Pgy8z OzlRpL5KpMLZKcP522pFOXGOOwuz\/p6c62nMxOEuKo9TzFc5w\/J8B+IM rFFVJ6SbOAX9fmRmrwhoWyYQCjkUIUHTZjDgb6bHJf4dHZPc5fj15q46 Qyk=<\/p>\n

isc.org. 7200 IN NS ord.sns-pb.isc.org.<\/p>\n

isc.org. 7200 IN NS ams.sns-pb.isc.org.<\/p>\n

isc.org. 7200 IN NS ns.isc.afilias-nst.info.<\/p>\n

isc.org. 7200 IN NS sfba.sns-pb.isc.org.<\/p>\n

isc.org. 7200 IN RRSIG NS 5 2 7200 20130918233243 20130819233243 50012 isc.org. wiGFwafSWLt\/gFmyXB6qBgYeojVMjFe1qDqvuUBsjWQAt\/S9kTAirsZh qgd1PES+xUCA7hsV6jgnfqbuigp\/1qtSjW8\/O8DO5SUjmKfM\/uOnb8WJ rxevj8CdGPYPITf8ICAMNMQlwPkqd7L2gqbhfbuWnZdGD\/t9TCW2eRNu rN8=<\/p>\n

isc.org. 60 IN A 149.20.64.69<\/p>\n

isc.org. 60 IN RRSIG A 5 2 60 20130918233243 20130819233243 50012 isc.org. CGtHJ+4D\/ygVkgT8J4bQheyFwt4s6duvNR2QKLOW4Cmna3hHU3IIjfy8 mQANnOb3Dgz16xp57MkIl\/8LlC8LjY8ZxfNfhAm+0W74B\/S1Y6Te0pO\/ G0KKr6WVCUiYluAGqBjmixUu+z88k7UYkLTJrSErbpHl2Ct7VKQNBymE qPM=<\/p>\n

isc.org. 7200 IN MX 10 mx.pao1.isc.org.<\/p>\n

isc.org. 7200 IN RRSIG MX 5 2 7200 20130918233243 20130819233243 50012 isc.org. I8ecf\/VkzkcHRUvC9zituX4yok3GpHlMY9gNAfbDtF+P7ifhZpudlnFO bzjSVL78JijELPVk6x2Z\/2KrN2fe3eMjQPTDlVxpsESk1OUTsiwrGqGf nyWBc9z3cgbV+FmfuIYUyjUvPcwpCGGDZh2JUspSbtv+av779wbNN4wr 6qE=<\/p>\n

isc.org. 7200 IN TXT “$Id: isc.org,v 1.1845 2013-08-16 16:16:50 dmahoney Exp $”<\/p>\n

isc.org. 7200 IN TXT “v=spf1 a mx ip4:204.152.184.0\/21 ip4:149.20.0.0\/16 ip6:2001:04F8::0\/32 ip6:2001:500:60::65\/128 ~all”<\/p>\n

isc.org. 7200 IN RRSIG TXT 5 2 7200 20130918233243 20130819233243 50012 isc.org. Z420DKLalOPgWjxZdpExAbi8K+j4xEMlg8PnL2tQw5aiRcz7y8qNyYYg 4LToddQtULTfOurfzRFtMNF\/mDQpFVnEcLRPL05XwbFrsXtuKFlpg2eU JyT8CbcjzdeYRjQi08pBofOEnzVpb2JecHb\/Q1ZQrKAqgi0i+3Oc9HB+ TQU=<\/p>\n

isc.org. 60 IN AAAA 2001:4f8:0:2::69<\/p>\n

isc.org. 60 IN RRSIG AAAA 5 2 60 20130918233243 20130819233243 50012 isc.org. EIvEtEC3ibOJBDO9N8Czwzy\/8Mhx2ivOMP\/ev6NiBvlJuoNCADLmBMvJ wyvec+1iuIr9RN3a1NPI2cjsClhrLbeHz3xGcYL2iSAMJF7C7b45P4Tt MHJk5FBUpT2hkMhaKmn2ZaNcg9JUfvSRvJfh+NoyGkKidUzUd4VCe3GY 7G4=<\/p>\n

isc.org. 7200 IN NAPTR 20 0 “S” “SIP+D2U” “” _sip._udp.isc.org.<\/p>\n

isc.org. 7200 IN RRSIG NAPTR 5 2 7200 20130918233243 20130819233243 50012 isc.org. O5Z0MLFgIaGST2aRl3SMwIGYuakkvENF3Aimp4JtLGto7IVkZPFzKp+f TMeLGMwNRSreYO4CY1aNVmjMfbr9+ycEPUs5ofYktEYa0nwxyHegmUyK 8TP9Qb89DeZ5hF4FGH+Qh5qSEaBtwrqikP6iCqKeGBAMyO2jSE+AbCHQ Rkk=<\/p>\n

isc.org. 3600 IN NSEC _adsp._domainkey.isc.org. A NS SOA MX TXT AAAA NAPTR RRSIG NSEC DNSKEY SPF<\/p>\n

isc.org. 3600 IN RRSIG NSEC 5 2 3600 20130918233243 20130819233243 50012 isc.org. wfE3BPFWj+ym2LbX2hQNUIalRj\/PKu1v\/F5OSUthdX\/DB1813j26FcTq 6eOP3kKETQcKDPk1bd4ium3t\/PN7fCSdoOJW+QpNE+zrBX8eZgxvzPrH j\/oXRqxJZE83E2+bZMOEm42jJvrQkiWreN9B2UIC0gKBR91KcY4d\/JW6 8is=<\/p>\n

isc.org. 7200 IN DNSKEY 257 3 5 BEAAAAOhHQDBrhQbtphgq2wQUpEQ5t4DtUHxoMVFu2hWLDMvoOMRXjGr hhCeFvAZih7yJHf8ZGfW6hd38hXG\/xylYCO6Krpbdojwx8YMXLA5\/kA+ u50WIL8ZR1R6KTbsYVMf\/Qx5RiNbPClw+vT+U8eXEJmO20jIS1ULgqy3 47cBB1zMnnz\/4LJpA0da9CbKj3A254T515sNIMcwsB8\/2+2E63\/zZrQz Bkj0BrN\/9Bexjpiks3jRhZatEsXn3dTy47R09Uix5WcJt+xzqZ7+ysyL KOOedS39Z7SDmsn2eA0FKtQpwA6LXeG2w+jxmw3oA8lVUgEf\/rzeC\/bB yBNsO70aEFTd<\/p>\n

isc.org. 7200 IN DNSKEY 256 3 5 BQEAAAABwuHz9Cem0BJ0JQTO7C\/a3McR6hMaufljs1dfG\/inaJpYv7vH XTrAOm\/MeKp+\/x6eT4QLru0KoZkvZJnqTI8JyaFTw2OM\/ItBfh\/hL2lm Cft2O7n3MfeqYtvjPnY7dWghYW4sVfH7VVEGm958o9nfi79532Qeklxh x8pXWdeAaRU=<\/p>\n

isc.org. 7200 IN RRSIG DNSKEY 5 2 7200 20130918230128 20130819230128 12892 isc.org. L6ZkWGfnC6\/FUXte4BpD3SNnBfHahJ87ckYPU+vBXBjcXgQUdSoPdnqq x7+jqA42+hmwaD\/WOup1Rxgb0wlEV8l+ZyqBBv+aZOgWqSyqzzVhg8AI J9wUEEET9VZrGr5ya\/CdyNMxNrmih9M20YNEoYvOMbKDmGsVQtGlq03+ Av3p1aWv7HBT6ajXN8sFFPDEXNlw0D0pkPaOD7hc6fwWwY5vcK2CxrZl gTcefnJn7vRdueI\/9Q5PmLKx8pjRuR4onUmkslFVbJlofUlg+N1ykfxg zyiBrU9uwbZa\/\/hfWtAsBaYVf4wHwp+4iS4W5\/NfC4DslaSBOlMRKID5 jAtR1w==<\/p>\n

isc.org. 7200 IN RRSIG DNSKEY 5 2 7200 20130918230128 20130819230128 50012 isc.org. OEvmY2EpSR7uAPewZd12L\/2SM8ZyN3ysl7ofjWLTjCKftpqXfMm7uXam BtlQeIEB3FMgmoDAAPBhR2Bw59Xnt5zlyQAR37kKaZq+3VoP8H4xHQeP Lw7iQhvHLRLazL0tZPx4hM5PixRO1KrvZcKlCqmCsLfGZakis5nfV7A\/ VvA=<\/p>\n

isc.org. 7200 IN SPF “v=spf1 a mx ip4:204.152.184.0\/21 ip4:149.20.0.0\/16 ip6:2001:04F8::0\/32 ip6:2001:500:60::65\/128 ~all”<\/p>\n

isc.org. 7200 IN RRSIG SPF 5 2 7200 20130918233243 20130819233243 50012 isc.org. Q\/NSQ6Pow4aIqzC1fVR\/GPTQ4HBqdlEpz5Wf1ShWTMFXXS3TzwIp3yJ9 bTT0msdUpla33D3dWJUQh85n+9GySiFUfoOaH02E+sd\/3mibXsbxeTll HuCPUrsrRzY9lPa+WtDlU367objPQdUPgnmj9bUc0nnZbTlvUw2US2+i bUE=<\/p>\n

;; ADDITIONAL SECTION:<\/p>\n

ams.sns-pb.isc.org. 7200 IN A 199.6.1.30<\/p>\n

ams.sns-pb.isc.org. 7200 IN AAAA 2001:500:60::30<\/p>\n

ord.sns-pb.isc.org. 7200 IN A 199.6.0.30<\/p>\n

ord.sns-pb.isc.org. 7200 IN AAAA 2001:500:71::30<\/p>\n

sfba.sns-pb.isc.org. 7200 IN A 149.20.64.3<\/p>\n

sfba.sns-pb.isc.org. 7200 IN AAAA 2001:4f8:0:2::19<\/p>\n

mx.pao1.isc.org. 3600 IN A 149.20.64.53<\/p>\n

mx.pao1.isc.org. 3600 IN AAAA 2001:4f8:0:2::2b<\/p>\n

asterisk.isc.org. 300 IN A 149.20.32.15<\/p>\n

ams.sns-pb.isc.org. 7200 IN RRSIG A 5 4 7200 20130918233243 20130819233243 50012 isc.org. XV5SXkma6ezqauSvzAmUqSvneDM0UYKSVcaj7tja0WY8NDsJKmvDU7BK r6gDKfST8Hhsg2\/AwEjVGazNzLBTmj02cya7LNLJdVc+xLcUP9ZxPK0d JSzHdpSi0LaOD7ybWbPBjgC9J6qwoi0DUPuiyNliXGqK8ITyDPKP1MM0 nyI=<\/p>\n

ams.sns-pb.isc.org. 7200 IN RRSIG AAAA 5 4 7200 20130918233243 20130819233243 50012 isc.org. CFsVsII\/r8gU6ClL6C94F2jdhogMNAKeQHIFJLzedgxd8GvnCwbeicVW ylh1BENyDe5el+MjpEzfYt6yKU3p3KJ2lFvtBM9oT1ShBpqlgK+HpdgD OHOqC\/XohvC7wcjeQPRB8tBV3kKcDkEUEkYCS2MqAeUemt2tI+5oHNjz kNY=<\/p>\n

ord.sns-pb.isc.org. 7200 IN RRSIG A 5 4 7200 20130918233243 20130819233243 50012 isc.org. WvuLT\/uwyKPt\/I5rdehedqTk2dw1vZHyKOLWWBF6w4AXdmhtoUdfEjO3 LPYO2ST9SFAGR+K08kTySco1ETLyBd83HKWnr\/bnU\/bw3RtfIUQs3jxY a7W8aByj\/DOI5zR\/YD69Wb0nPkjD3WRRyGUN\/QYkYLzegvvZ2jxVvNDS PYE=<\/p>\n

ord.sns-pb.isc.org. 7200 IN RRSIG AAAA 5 4 7200 20130918233243 20130819233243 50012 isc.org. EbPkkD6Lfu7AYOKeeXWzxwn584GFV2AbVZkZv6a4muL5ArzrmRAxMuXg VhA1b0m+BvPidd6vOYdTVavUj8BbWxsNqEpQoVQbuvYxGLc5KPSvHeoE jTNKpklMtTfC\/8lDlzxnEsO8crgpeUKpqEbvIpGevyxR1GadnrWwmDMh xpM=<\/p>\n

sfba.sns-pb.isc.org. 7200 IN RRSIG A 5 4 7200 20130918233243 20130819233243 50012 isc.org. oXLB1qTapYgLb0qWiDl32HSWY3dLbohcoV0Yw8xhevVZkW4lwbaUDH1v Lm+BBu7zh5hIQViyRJ1rP9YHQa7QtD4qknkDGqn8BB4o4Zv8pGlN019t nTOVXgQOYqw\/D8n5WencYuynIfBENKLKEaiie7KlMoUZBK9V9zF9CWae Soo=<\/p>\n

;; Query time: 24 msec<\/p>\n

;; SERVER: 2001:4f8:0:2::19#53(2001:4f8:0:2::19)<\/p>\n

;; WHEN: Fri Aug 23 15:37:03 2013<\/p>\n

;; MSG SIZE\u00a0 rcvd: 4077<\/p>\n","protected":false},"excerpt":{"rendered":"

% dig @sfba.sns-pb.isc.org. any isc.org. +norec +dnssec +qr ; <<>> DiG 9.8.3-P1 <<>> @sfba.sns-pb.isc.org. any isc.org. +norec +dnssec +qr ; (2 servers found) ;; global options: +cmd ;; Sending: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37911 ;; flags:; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: […]<\/p>\n","protected":false},"author":178,"featured_media":3187,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[17],"tags":[16,38,15],"class_list":{"0":"post-3510","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-ipv6-coe","8":"tag-infoblox","9":"tag-ipv6","10":"tag-security","11":"entry"},"acf":[],"yoast_head":"\nAn Example of (Massive) DNS Amplification<\/title>\n<meta name=\"description\" content=\"An Example of (Massive) DNS Amplification\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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Amplification\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/\",\"name\":\"infoblox.com\\\/blog\\\/\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/#organization\",\"name\":\"Infoblox\",\"url\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/wp-content\\\/uploads\\\/infoblox-logo-2.svg\",\"contentUrl\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/wp-content\\\/uploads\\\/infoblox-logo-2.svg\",\"width\":137,\"height\":30,\"caption\":\"Infoblox\"},\"image\":{\"@id\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.infoblox.com\\\/blog\\\/#\\\/schema\\\/person\\\/bb6b62b1b99a7cbcd7c528d5763778d5\",\"name\":\"Cricket 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