{"id":6990,"date":"2025-09-30T15:43:39","date_gmt":"2025-09-30T06:43:39","guid":{"rendered":"https:\/\/blog.since2020.jp\/?p=6990"},"modified":"2025-09-30T15:43:39","modified_gmt":"2025-09-30T06:43:39","slug":"dnscachepoisoning_glossary","status":"publish","type":"post","link":"https:\/\/since2020.jp\/media\/dnscachepoisoning_glossary\/","title":{"rendered":"DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u5fb9\u5e95\u30ac\u30a4\u30c9\uff1a\u4ed5\u7d44\u307f\u304b\u3089\u5bfe\u7b56\u30fb\u6700\u65b0\u52d5\u5411\u307e\u3067"},"content":{"rendered":"\n<p>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u3084\u6700\u65b0\u306e\u30ab\u30df\u30f3\u30b9\u30ad\u30fc\u578b\u653b\u6483\u3001SAD DNS\u306a\u3069\u306e\u65b0\u6280\u8853\u304b\u3089\u5bfe\u7b56\u307e\u3067\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u7d71\u8a08\u30fb\u4e8b\u4f8b\u3092\u7528\u3044\u305f\u6df1\u6398\u308a\u3067\u3001\u521d\u5fc3\u8005\u306b\u3082\u5c02\u9580\u5bb6\u306b\u3082\u5f79\u7acb\u3064\u5b9f\u8df5\u7684\u306a\u5185\u5bb9\u3067\u3059\u3002<\/p>\n\n\n<h2>\u306f\u3058\u3081\u306b<\/h2>\n<b>\u3044\u307e\u306a\u305c\u300c\u6bd2\u5165\u308aDNS\u300d\u304c\u518d\u3073\u6ce8\u76ee\u3055\u308c\u308b\u306e\u304b\uff1f<\/b>\r\n<p>DNS\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u300c\u901f\u3055\u300d\u3068\u300c\u8ca0\u8377\u8efd\u6e1b\u300d\u306e\u8981\u3067\u3059\u304c\u3001\u540c\u6642\u306b\u507d\u60c5\u5831\u3092\u84c4\u3048\u308b\u5371\u967a\u6027\u3082\u6301\u3061\u307e\u3059\u3002\u3053\u306e\u69cb\u9020\u7684\u6b20\u9665\u3092\u7a81\u304f\u653b\u6483\u2014DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u2014\u306f\u3001\u5341\u6570\u5e74\u524d\u304b\u3089\u8b66\u9418\u304c\u9cf4\u3089\u3055\u308c\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u30012008\u5e74\u306b\u767b\u5834\u3057\u305f\u30ab\u30df\u30f3\u30b9\u30ad\u30fc\u578b\u653b\u6483\u4ee5\u964d\u3001IPv6\u6642\u4ee3\uff0fIoT\u6642\u4ee3\u3092\u8fce\u3048\u305f\u4eca\u3001\u653b\u6483\u8005\u306e\u624b\u6cd5\u306f\u3088\u308a\u5de7\u5999\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\r\n<p><!-- notionvc: f1cc4f56-1181-4933-9732-bd2ddd152543 --><\/p>\n\n<h2>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u3068\u306f\uff1f\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\u3068\u5f71\u97ff\uff09<\/h2>\n<b>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30fb\u30ea\u30be\u30eb\u30d0\u3068\u306f\uff1f<\/b>\r\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u30eb\u30fc\u30c8\u2192TLD\u2192\u6a29\u5a01\u30b5\u30fc\u30d0\u3078\u3068\u554f\u3044\u5408\u308f\u305b\u3092\u4f9d\u983c\u3059\u308b\u9014\u4e2d\u3001\u8fc2\u56de\u3057\u3066\u60c5\u5831\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u306e\u304c\u30d5\u30eb\u30ea\u30be\u30eb\u30d0\u3067\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3067\u5fdc\u7b54\u304c\u8fc5\u901f\u306b\u306a\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8ca0\u8377\u3082\u6e1b\u308b\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\r\n<b>\u653b\u6483\u306e\u4ed5\u7d44\u307f\uff1a\u507d\u5fdc\u7b54\u306e\u633f\u5165<\/b>\r\n<p>\u653b\u6483\u8005\u306f\u3001DNS\u30b5\u30fc\u30d0\u306e\u554f\u3044\u5408\u308f\u305bID\u3084\u8981\u6c42\u30dd\u30fc\u30c8\u3092\u63a8\u6e2c\u3001\u3042\u308b\u3044\u306f\u56fa\u5b9a\u5316\u3055\u308c\u3066\u3044\u308b\u74b0\u5883\u3092\u72d9\u3044\u3001\u507d\u306eDNS\u5fdc\u7b54\u3092\u5927\u91cf\u306b\u9001\u308a\u4ed8\u3051\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u304c\u3053\u308c\u3092\u8aa4\u3063\u3066\u4fdd\u5b58\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u305d\u308c\u4ee5\u964d\u6b63\u898f\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u653b\u6483\u8005\u7ba1\u7406\u4e0b\u306eIP\u3078\u8a98\u5c0e\u3055\u308c\u7d9a\u3051\u307e\u3059\u3002<\/p>\r\n<b>\u88ab\u5bb3\u4e8b\u4f8b\uff1a\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30fb\u30de\u30eb\u30a6\u30a7\u30a2\u30fbISP\u4e57\u3063\u53d6\u308a<\/b>\r\n<ul>\r\n\t<li>\u4eee\u60f3\u9280\u884c\u3092\u6f14\u3058\u305f\u507d\u88c5\u30b5\u30a4\u30c8\u306b\u3088\u308b\u30d1\u30b9\u30ef\u30fc\u30c9\u7a83\u53d6\uff08Pharming\u624b\u6cd5\uff09<\/li>\r\n\t<li>\u30de\u30eb\u30a6\u30a7\u30a2\u3084\u30d0\u30ca\u30fc\u5e83\u544a\u306e\u914d\u4fe1<\/li>\r\n\t<li>ISP\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u6c5a\u67d3\u306b\u3088\u308b\u5927\u898f\u6a21DoS\u72b6\u614b<\/li>\r\n<\/ul>\r\n<p><!-- notionvc: f15d90da-c291-41c7-b15f-7cb3505233c2 --><\/p>\n\n<h2>\u9032\u5316\u3059\u308b\u653b\u6483\u624b\u6cd5\uff1a\u30ab\u30df\u30f3\u30b9\u30ad\u30fc\u578b &#038; SAD DNS<\/h2>\n<b>\u30ab\u30df\u30f3\u30b9\u30ad\u30fc\u578b\u653b\u6483\uff082008\u5e74\uff09<\/b>\r\n<p>\u30ab\u30df\u30f3\u30b9\u30ad\u30fc\u7814\u7a76\u8005\u304c\u767a\u898b\u3057\u305f\u624b\u6cd5\u3067\u306f\u3001\u5b58\u5728\u3057\u306a\u3044\u540d\u524d\u3078\u306e\u554f\u3044\u5408\u308f\u305b\u3092\u767a\u751f\u3055\u305b\u3001\u56de\u7b54\u306eID\u3068\u30bd\u30fc\u30b9\u30dd\u30fc\u30c8\u3092\u7dcf\u5f53\u305f\u308a\u3059\u308b\u3053\u3068\u3067\u6210\u529f\u7387\u3092\u5287\u7684\u306b\u9ad8\u3081\u307e\u3057\u305f\u3002<\/p>\r\n<b>SAD DNS\uff082020\u5e74\u4ee3\uff09<\/b>\r\n<p>\u30ab\u30ea\u30d5\u30a9\u30eb\u30cb\u30a2\u5927\u5b66\u306a\u3069\u306e\u7814\u7a76\u306b\u3088\u308a2020\u5e74\u4ee5\u964d\u306b\u5831\u544a\u3055\u308c\u305fSAD DNS\u306f\u3001TCP\/UDP\u30bb\u30c3\u30b7\u30e7\u30f3\u885d\u7a81\u3092\u4f7f\u3044\u3001ID\u4e88\u6e2c\u4ee5\u5916\u306e\u7d4c\u8def\u304b\u3089Poisoning\u3092\u6210\u529f\u3055\u305b\u308b\u9032\u5316\u578b\u3067\u3059\u3002<\/p>\r\n<p><!-- notionvc: 5762c981-3fde-41c9-b9f6-019fab412398 --><\/p>\n\n<h2>\u653b\u6483\u4f8b\u3068\u6700\u65b0\u7d71\u8a08\uff1a\u88ab\u5bb3\u306e\u73fe\u5b9f\u30ec\u30d9\u30eb<\/h2>\n<ul>\r\n\t<li>\u65e5\u672c\u3067\u30822014\u5e74\u306b\u300cDNS\u6c34\u8cac\u3081\u653b\u6483\u300d\uff08\u5927\u91cfNXDOMAIN\u306e\u8a98\u767a\uff09\u306b\u3088\u308b\u30a4\u30f3\u30d5\u30e9\u505c\u6ede\u4e8b\u4f8b\u304c\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\r\n\t<li>2017\u301c2021\u5e74\u306b\u306fNTT-CERT\u3084ISP\u306b\u3082\u591a\u6570\u691c\u51fa\u3055\u308c\u3001\u76e3\u8996\u4f53\u5236\u306e\u5f37\u5316\u304c\u9032\u3093\u3067\u3044\u307e\u3059\u3002<\/li>\r\n\t<li>\u5b66\u8853\u7684\u306b\u306f\u3001\u4ea4\u5dee\u5c64\u653b\u6483\uff08IP\u2192DNS\u2192BGP\u4e57\u3063\u53d6\u308a\uff09\u3082\u691c\u8a3c\u3055\u308c\u3066\u304a\u308a\u3001DNS\u306f\u4eca\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u6839\u5e79\u3067\u3042\u308b\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<\/ul>\r\n<p><!-- notionvc: efc0832a-f9cb-46f9-a426-3c0e953d9196 --><\/p>\n\n<h2>\u5bfe\u7b56\u306e\u6700\u524d\u7dda<\/h2>\n<b>\u30bd\u30fc\u30b9\u30dd\u30fc\u30c8\u30e9\u30f3\u30c0\u30de\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3<\/b>\r\n<p>\u554f\u3044\u5408\u308f\u305b\u6642\u306e\u30bd\u30fc\u30b9\u30dd\u30fc\u30c8\u3092\u30e9\u30f3\u30c0\u30e0\u5316\u3057\u3001\u653b\u6483\u306e\u96e3\u6613\u5ea6\u3092\u4e0a\u3052\u308b\u624b\u6cd5\u3002\u591a\u304f\u306eDNS\u30bd\u30d5\u30c8\uff08BIND9\u306a\u3069\uff09\u3067\u6a19\u6e96\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u74b0\u5883\u3082\u4f9d\u7136\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\r\n<b>DNSSEC\u5c0e\u5165\u306e\u52b9\u679c\u3068\u666e\u53ca\u7387<\/b>\r\n<p>\u96fb\u5b50\u7f72\u540d\u306b\u3088\u308a\u5fdc\u7b54\u304c\u672c\u7269\u304b\u5426\u304b\u3092\u691c\u8a3c\u3059\u308bDNSSEC\u306f\u3001\u7406\u8ad6\u4e0a\u6700\u5f37\u306e\u9632\u5fa1\u3002\u3057\u304b\u3057\u3001\u56fd\u5185DNS\u30be\u30fc\u30f3\u3067\u306e\u5c0e\u5165\u306f\u9032\u3093\u3067\u304a\u308a\u3001\u30eb\u30fc\u30c8\u30be\u30fc\u30f3\u30fbJP\u30be\u30fc\u30f3\u306e\u7f72\u540d\u306f\u9032\u3093\u3067\u3044\u307e\u3059\u304c\u3001\u30d5\u30eb\u30ea\u30be\u30eb\u30d0\u3067\u306e\u691c\u8a3c\u7387\u306fIPv4\u3067\u7d0418%\u3001IPv6\u306738%\u7a0b\u5ea6\u306b\u7559\u307e\u308b\u3068\u3044\u3046\u8abf\u67fb\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\r\n<b>empty non\u2011terminal\u7b49\u306e\u4e9c\u7a2e\u3082\u542b\u3081\u305f\u7dcf\u5408\u5bfe\u7b56<\/b>\r\n<p>JPRS\u306a\u3069\u304c\u6307\u6458\u3059\u308b\u3088\u3046\u306b\u3001\u30be\u30fc\u30f3\u69cb\u9020\u3084empty non\u2011terminal\u3092\u4f7f\u3063\u305f\u653b\u6483\u306b\u3082DNSSEC\u3068\u30be\u30fc\u30f3\u5206\u96e2\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u5bfe\u5fdc\u3059\u308b\u52d5\u304d\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\r\n<p><!-- notionvc: 6c150678-b04a-401b-a82b-006005cd8558 --><\/p>\n\n<h2>\u56fd\u5185\u5c0e\u5165\u4e8b\u4f8b\u3068\u904b\u7528\u4e0a\u306e\u6ce8\u610f\u70b9<\/h2>\n<ul>\r\n\t<li><strong>OCN\/NTT<\/strong> \u306f\u6cd5\u4eba\u5411\u3051\u74b0\u5883\u3067\u306eBIND\u8a2d\u5b9a\u4f8b\u3092\u516c\u958b\u3057\u3001\u7279\u306b\u30aa\u30fc\u30d7\u30f3\u30ea\u30be\u30eb\u30d0\u3084\u30dd\u30fc\u30c8\u306e\u30e9\u30f3\u30c0\u30e0\u5316\u3092\u518d\u78ba\u8a8d\u3059\u308b\u3088\u3046\u6ce8\u610f\u559a\u8d77\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n\t<li><strong>JPRS<\/strong> \u306fDNSSEC.jp\u3092\u901a\u3058\u305f\u691c\u8a3c\u3068\u3001\u30be\u30fc\u30f3\u7a7a\u9593\u306e\u69cb\u9020\u898b\u76f4\u3057\uff08\u89aa\u5b50\u5206\u96e2\uff09\u3092\u9032\u3081\u3001empty non-terminal\u653b\u6483\u3078\u306e\u95a2\u5fc3\u3082\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059<a href=\"https:\/\/www.nic.ad.jp\/ja\/newsletter\/No46\/0520.html?utm_source=chatgpt.com\"><\/a>\u3002<\/li>\r\n<\/ul>\r\n<p><!-- notionvc: 1d727617-4a6f-432c-8204-976a26d53808 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