{"id":9321,"date":"2020-02-23T11:47:42","date_gmt":"2020-02-23T02:47:42","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=9321"},"modified":"2023-05-28T08:06:09","modified_gmt":"2023-05-27T23:06:09","slug":"%e3%80%90linux%e3%80%91%e3%80%8cnslookup%e3%80%8d%e3%82%b3%e3%83%9e%e3%83%b3%e3%83%89%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=9321","title":{"rendered":"\u3010\u30a4\u30f3\u30d5\u30e9\u3011\u300cDNS\u300d\u306e\u4ed5\u7d44\u307f\u3001\u30a4\u30f3\u30d5\u30e9\u8a2d\u5b9a"},"content":{"rendered":"<h2>DNS\u306e\u4ed5\u7d44\u307f<\/h2>\n<ul>\n<li>\u300cDomain Name System\u300d\u306e\u7565\u3067\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092IP\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/li>\n<li>\u57fa\u672c\u7684\u306bUDP\u3067\u901a\u4fe1\u3092\u3059\u308b\u3002<\/li>\n<li>\u305f\u3060\u3001UDP\u306b\u306f\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u306e\u4e0a\u9650\u304c\u3042\u308b\u305f\u3081\u5927\u304d\u3044\u30b5\u30a4\u30ba\u306b\u306a\u308b\u5834\u5408\u306f\u300cTCP\u300d\u3067\u306e\u901a\u4fe1\u306b\u5207\u308a\u66ff\u308f\u308b\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3060\u3051\u3067\u306a\u304f\u3001\u30b5\u30fc\u30d0\u30fc\u306b\u3082\u540d\u524d\u89e3\u6c7a\u306b\u7528\u3044\u308bDNS\u30b5\u30fc\u30d0\u30fc\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3002<\/li>\n<\/ul>\n<h2>DNS\u306e\u69cb\u6210\u8981\u7d20<\/h2>\n<ul>\n<li>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/li>\n<li>\u30d5\u30eb\u30ea\u30be\u30eb\u30d0<\/li>\n<li>\u30b9\u30bf\u30d6\u30ea\u30be\u30eb\u30d0<\/li>\n<\/ul>\n<h3>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/h3>\n<ul>\n<li>\u30c9\u30e1\u30a4\u30f3\u540d\u3068IP\u30a2\u30c9\u30ec\u30b9\u304c\u7d10\u3065\u3044\u3066\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc<\/li>\n<li>\u30c9\u30e1\u30a4\u30f3\u306e\u968e\u5c64\u3054\u3068\u306b\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u304c\u914d\u7f6e\u3055\u308c\u3066\u3001\u968e\u5c64\u3054\u3068\u306b\u30c9\u30e1\u30a4\u30f3\u60c5\u5831\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u30d5\u30eb\u30ea\u30be\u30eb\u30d0<\/h3>\n<p>\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u3065\u304fIP\u30a2\u30c9\u30ec\u30b9\u3092\u805e\u3044\u305f\u969b\u306b\u3001\u69d8\u3005\u306a\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306b\u554f\u3044\u5408\u308f\u305b\u3066IP\u30a2\u30c9\u30ec\u30b9\u3092\u6559\u3048\u3066\u304f\u308c\u308b\u30b5\u30fc\u30d0\u30fc\u3067\u3059\u3002<\/p>\n<h3>\u30b9\u30bf\u30d6\u30ea\u30be\u30eb\u30d0<\/h3>\n<ul>\n<li>\u4e00\u822c\u7684\u306aOS\u306b\u7d44\u307f\u8fbc\u307e\u308c\u305fDNS\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5b9f\u88c5\u3067\u3059\u3002<\/li>\n<li>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u304b\u30d5\u30eb\u30ea\u30be\u30eb\u30d0\u306e\u3069\u3061\u3089\u304b\u306b\u554f\u3044\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/li>\n<li>\u53cd\u5fa9\u554f\u3044\u5408\u308f\u305b\u306e\u6a5f\u80fd\u3092\u6301\u305f\u306a\u3044\u305f\u3081\u5e38\u306b\u518d\u5e30\u554f\u3044\u5408\u308f\u305b\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u30d5\u30eb\u30ea\u30be\u30eb\u30d0\u306b\u554f\u3044\u5408\u308f\u305b\u305f\u5834\u5408\u306f\u666e\u901a\u306b\u53cd\u5fa9\u554f\u3044\u5408\u308f\u305b\u3057\u3066\u304f\u308c\u3066\u7d50\u679c\u3092\u8fd4\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/li>\n<li>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u306b\u554f\u3044\u5408\u308f\u305b\u305f\u5834\u5408\u306f\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306f\u53cd\u5fa9\u554f\u3044\u5408\u308f\u305b\u6a5f\u80fd\u3092\u6301\u305f\u306a\u3044\u305f\u3081\u65e2\u306b\u6709\u3057\u3066\u3044\u308b\u60c5\u5831\u306e\u307f\u8fd4\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u540d\u524d\u89e3\u6c7a<\/h2>\n<p>\u30d5\u30eb\u30ea\u30be\u30eb\u30d0\u304c\u5404\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u6d41\u308c\u3068\u3057\u3066\u306f\u8a73\u3057\u304f\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u4e00\u9023\u306e\u6d41\u308c\u3092<span style=\"color: #ff0000;\"><strong>\u540d\u524d\u89e3\u6c7a<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002\u307e\u305f\u3001\u5404\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u304c\u7ba1\u7406\u3059\u308b\u968e\u5c64\u306e\u3053\u3068\u3092<span style=\"color: #ff0000;\"><strong>\u30be\u30fc\u30f3<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-11017\" src=\"http:\/\/www.code-magagine.com\/wp-content\/uploads\/2020\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2020-06-11-11.48.05-300x242.png\" alt=\"\" width=\"600\" height=\"484\" srcset=\"http:\/\/www.code-magagine.com\/wp-content\/uploads\/2020\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2020-06-11-11.48.05-300x242.png 300w, http:\/\/www.code-magagine.com\/wp-content\/uploads\/2020\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2020-06-11-11.48.05-768x621.png 768w, http:\/\/www.code-magagine.com\/wp-content\/uploads\/2020\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2020-06-11-11.48.05-1024x827.png 1024w, http:\/\/www.code-magagine.com\/wp-content\/uploads\/2020\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2020-06-11-11.48.05.png 1094w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>\u554f\u3044\u5408\u308f\u305b\u305f\u5185\u5bb9\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3002<\/h3>\n<p>\u4e00\u5ea6\u554f\u3044\u5408\u308f\u305b\u305f\u5185\u5bb9\u3092\u3082\u3046\u4e00\u5ea6\u554f\u3044\u5408\u308f\u305b\u308b\u306e\u306f\u7121\u99c4\u306a\u30b3\u30b9\u30c8\u306b\u306a\u308b\u306e\u3067<span style=\"color: #ff0000;\"><strong>\u30d5\u30eb\u30ea\u30be\u30eb\u30d0\u306f\u4e00\u5ea6\u554f\u3044\u5408\u308f\u305b\u305f\u5185\u5bb9\u306f\u3057\u3070\u3089\u304f\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002<\/strong><\/span><\/p>\n<h2>\u30ea\u30bd\u30fc\u30b9\u30ec\u30b3\u30fc\u30c9<\/h2>\n<p><span style=\"color: #ff0000;\"><strong>DNS\u304c\u7ba1\u7406\u3057\u3066\u3044\u308b\u69d8\u3005\u306a\u60c5\u5831\u306e\u3053\u3068<\/strong><\/span>\u3067\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u3068\u30c9\u30e1\u30a4\u30f3\u540d\u610f\u5916\u306b\u3082\u69d8\u3005\u306a\u60c5\u5831\u3092\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<th width=\"150\">\u30ea\u30bd\u30fc\u30b9\u30ec\u30b3\u30fc\u30c9\u306e\u30bf\u30a4\u30d7<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<tr>\n<td>A\u30ec\u30b3\u30fc\u30c9<\/td>\n<td>\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u3065\u304fIP\u30a2\u30c9\u30ec\u30b9<\/td>\n<\/tr>\n<tr>\n<td>NS\u30ec\u30b3\u30fc\u30c9<\/td>\n<td>\u30c9\u30e1\u30a4\u30f3\u306e\u30be\u30fc\u30f3\u3092\u7ba1\u7406\u3059\u308b\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u7d10\u4ed8\u3051<\/td>\n<\/tr>\n<tr>\n<td>MX\u30ec\u30b3\u30fc\u30c9<\/td>\n<td>\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u3065\u304f\u30e1\u30fc\u30eb\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc<\/td>\n<\/tr>\n<tr>\n<td>CNAME<\/td>\n<td>\u30c9\u30e1\u30a4\u30f3\u306e\u5225\u540d\u3067\u30ea\u30bd\u30fc\u30b9\u30ec\u30b3\u30fc\u30c9\u306e\u53c2\u7167\u5148\u3001CNAME\u306e\u5143\u306e\u540d\u524d\u306b\u5bfe\u3057\u3066A\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5225\u540d\u306b\u5bfe\u3057\u3066A\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/td>\n<\/tr>\n<tr>\n<td>SOA<\/td>\n<td>\u30c9\u30e1\u30a4\u30f3\u306e\u30be\u30fc\u30f3\u7ba1\u7406\u60c5\u5831<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>DNS\u30e9\u30a6\u30f3\u30c9\u30ed\u30d3\u30f3<\/h2>\n<p>\u540c\u3058\u30db\u30b9\u30c8\u540d\u306b\u5bfe\u3057\u3066\u8907\u6570\u306eA\u30ec\u30b3\u30fc\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u8907\u6570\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3092\u632f\u308a\u5206\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">www IN A IP\u30a2\u30c9\u30ec\u30b91\r\nwww IN A IP\u30a2\u30c9\u30ec\u30b92\r\nwww IN A IP\u30a2\u30c9\u30ec\u30b93<\/pre>\n<h3>DNS\u30e9\u30a6\u30f3\u30c9\u30ed\u30d3\u30f3\u306e\u554f\u984c\u70b9<\/h3>\n<p>DNS\u306e\u6a5f\u80fd\u3067\u306f\u6b7b\u6d3b\u76e3\u8996\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u306a\u306e\u3067\u3001\u3042\u308bWeb\u30b5\u30fc\u30d0\u304c\u30c0\u30a6\u30f3\u3057\u3066\u3044\u305f\u3068\u3057\u3066\u3082\u305d\u306e\u307e\u307e\u30a2\u30af\u30bb\u30b9\u5206\u914d\u3092\u3057\u7d9a\u3051\u3066\u3057\u307e\u3046\u305f\u3081\u53ef\u7528\u6027\u5bfe\u7b56\u3068\u3057\u3066\u306f\u5fae\u5999\u3067\u3059\u3002<\/p>\n<h2>nslookup\u30b3\u30de\u30f3\u30c9\u306b\u3064\u3044\u3066<\/h2>\n<p>\u3069\u306e\u3088\u3046\u306aDNS\u30b5\u30fc\u30d0\u30fc\u3067\u540d\u524d\u89e3\u6c7a\u304c\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>dig\u30b3\u30de\u30f3\u30c9<\/h2>\n<p>\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u3065\u304fIP\u30a2\u30c9\u30ec\u30b9\u3084IP\u30a2\u30c9\u30ec\u30b9\u306b\u7d10\u3065\u304f\u30c9\u30e1\u30a4\u30f3\u3092\u8abf\u3079\u305f\u3044\u6642\u306b\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true \">dig \u30c9\u30e1\u30a4\u30f3\u540d NS +short<\/pre>\n<h3>\u30aa\u30d7\u30b7\u30e7\u30f3<\/h3>\n<h4>NS<\/h4>\n<p>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u8abf\u3079\u305f\u3044\u5834\u5408\u306b\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<h4>+short<\/h4>\n<p>dig\u30b3\u30de\u30f3\u30c9\u306f\u69d8\u3005\u306a\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u308b\u306e\u3067\u30b7\u30f3\u30d7\u30eb\u306a\u60c5\u5831\u304c\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3053\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u307e\u3059\u3002<\/p>\n<h2>DNS\u306e\u8a2d\u5b9a<\/h2>\n<h3>\u30b9\u30bf\u30d6\u30ea\u30be\u30eb\u30d0\u306e\u8a2d\u5b9a<\/h3>\n<p>\u30b9\u30bf\u30d6\u30ea\u30be\u30eb\u30d0\u306f\u5404OS\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u5099\u308f\u3063\u3066\u3044\u308bDNS\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u6a5f\u80fd\u3067\u3059\u3002\u8907\u6570\u306eDNS\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u30c9\u30e1\u30a4\u30f3\u6bce\u306b\u632f\u308a\u5206\u3051\u305f\u308a\u3001\u540c\u6642\u306b\u5229\u7528\u3059\u308b\u6a5f\u80fd\u306f\u6709\u3057\u3066\u3044\u306a\u3044\u3067\u3059\u3002<\/p>\n<h4>linux\/mac\u306e\u5834\u5408(libresolv)<\/h4>\n<pre class=\"lang:default decode:true\">\/etc\/resolv.conf<\/pre>\n<p>\u4e0b\u8a18\u306e\u3088\u3046\u306a\u8a2d\u5b9a\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true \">search example.com\r\nnameserver 8.8.8.8\r\nnameserver 9.9.9.9<\/pre>\n<p>nameserver\u3092\u8907\u6570\u3057\u3066\u3044\u308b\u306e\u306f\u969c\u5bb3\u6642\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u6642\u306e\u305f\u3081\u3067\u3059\u3002\u4e0a\u304b\u3089\u512a\u5148\u3057\u3066\u554f\u3044\u5408\u308f\u305b\u307e\u3059\u3002<\/p>\n<h4>windows\u306e\u5834\u5408(Windows DNS Client)<\/h4>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9<\/p>\n<h4>\u30b9\u30bf\u30d6\u30ea\u30be\u30eb\u30d0\u3092\u8907\u6570\u306eDNS\u30b5\u30fc\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3092\u632f\u308a\u5206\u3051\u305f\u3044\u5834\u5408<\/h4>\n<p>\u30d5\u30a9\u30ef\u30fc\u30c0\u30fc\u3092\u4f7f\u3044\u307e\u3059\u3002\u53d7\u3051\u53d6\u3063\u305f\u554f\u3044\u5408\u308f\u305b\u3092\u30eb\u30fc\u30eb\u306b\u57fa\u3065\u3044\u3066\u632f\u308a\u5206\u3051\u3066\u304f\u308c\u307e\u3059\u3002\u30d5\u30a9\u30ef\u30fc\u30c0\u30fc\u304b\u3089\u51fa\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u5e38\u306b<span style=\"color: #ff0000;\"><strong>\u518d\u5e30\u554f\u3044\u5408\u308f\u305b<\/strong><\/span>\u304c\u98db\u3076\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"DNS\u306e\u4ed5\u7d44\u307f \u300cDomain Name System\u300d\u306e\u7565\u3067\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092IP\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3057\u307e\u3059\u3002 \u57fa\u672c\u7684\u306bUDP\u3067\u901a\u4fe1\u3092\u3059\u308b\u3002 \u305f\u3060\u3001UDP\u306b\u306f\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u306e\u4e0a\u9650\u304c\u3042\u308b\u305f\u3081\u5927\u304d\u3044\u30b5\u30a4\u30ba\u306b\u306a\u308b\u5834\u5408\u306f\u300cTCP\u300d\u3067\u306e\u901a [&hellip;]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/9321"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9321"}],"version-history":[{"count":20,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/9321\/revisions"}],"predecessor-version":[{"id":20696,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/9321\/revisions\/20696"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9321"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}