{"id":852,"date":"2019-08-04T11:44:23","date_gmt":"2019-08-04T03:44:23","guid":{"rendered":"https:\/\/yangwang.hk\/?p=852"},"modified":"2019-08-04T11:46:12","modified_gmt":"2019-08-04T03:46:12","slug":"dns%e7%9a%84%e5%8e%86%e5%8f%b2%e5%92%8c%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/yangwang.hk\/?p=852","title":{"rendered":"DNS\u7684\u5386\u53f2\u548c\u539f\u7406"},"content":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f<a href=\"https:\/\/yangwang.hk\/?p=862\" target=\"_blank\" rel=\"noopener\">\u7528Golang\u5b9e\u73b0\u4e00\u4e2aDNS\u670d\u52a1\u5668<\/a>\u7cfb\u5217\u7b2c\u4e8c\u90e8\u5206\u7684\u4e0a\u7bc7\u3002<\/p>\n<p>\u8981\u60f3\u5b9e\u73b0\u4e00\u4e2a\u4e0a\u7bc7\u5185\u63cf\u7ed8\u7684DNS Server\uff0c\u90a3\u6211\u4eec\u80af\u5b9a\u5f97\u5bf9DNS\u8fd9\u4e2a\u534f\u8bae\u6709\u4e00\u4e2a\u5b8c\u6574\u800c\u8be6\u7ec6\u7684\u4e86\u89e3\u3002<\/p>\n<p>DNS\u8fd9\u4e2a\u8bcd\u62e5\u6709\u8bb8\u591a\u542b\u4e49\uff0c\u5b83\u6700\u6839\u672c\u7684\u542b\u4e49\u662f\u6307\u6574\u4e2a\u57df\u540d\u7cfb\u7edf\uff08Domain Name System\uff09,\u540c\u65f6\uff0c\u5b83\u4e5f\u53ef\u4ee5\u6307\u4ee3\u8fd9\u4e2a\u7cfb\u7edf\u5de5\u4f5c\u65f6\u53d1\u9001\u6570\u636e\u5305\u7684\u683c\u5f0f\uff0c\u4e5f\u5c31\u662fDNS\u534f\u8bae\u3002<\/p>\n<h3>DNS\u7684\u5386\u53f2<\/h3>\n<p>\u4f5c\u4e3a\u4e00\u4e2a\u53e4\u8001\u800c\u53c8\u5e38\u7528\u7684\u4e00\u4e2a\u5178\u578b\u5e94\u7528\u5c42\u534f\u8bae\uff0cDNS\u5728\u4efb\u4f55\u4e00\u672c\u4ecb\u7ecd\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u4e66\u7c4d\u5185\u90fd\u4f1a\u88ab\u63d0\u53ca\u3002<\/p>\n<p>\u5728\u4e92\u8054\u7f51\u7684\u8fdc\u53e4\u65f6\u671f\uff08\u963f\u5e15\u7f51\u65f6\u4ee3\uff09\uff0c\u4eba\u4eec\u4f7f\u7528<strong>IP<\/strong>\u548c<strong>\u4e3b\u673a\u540d<\/strong>\u8fdb\u884c\u4e92\u8054\u8bbf\u95ee\u3002\u76f8\u6bd4\u4e8eIP\u5730\u5740\uff0c\u7531\u4e00\u4e32\u5b57\u6bcd\u548c\u6570\u5b57\u6784\u6210\u7684\u4e3b\u673a\u540d\u663e\u7136\u8981\u66f4\u5bb9\u6613\u8bb0\u5fc6\u3002\u7136\u800c\u5728\u8fdb\u884c\u4e92\u8054\u7f51\u901a\u4fe1\u65f6\u5e76\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528\u4e3b\u673a\u540d\uff0c\u800c\u662f\u9700\u8981\u5148\u5c06\u4e3b\u673a\u540d\u8f6c\u6362\u4e3a\u5bf9\u5e94\u7684IP\u5730\u5740\uff0c\u7136\u540e\u518d\u8fdb\u884c\u901a\u4fe1\u3002\u4e3b\u673a\u540d\u5b9e\u9645\u4e0a\u662f\u4e00\u4e32\u5b57\u7b26\u5230\u5bf9\u5e94\u7684IP\u5730\u5740\u7684\u4e00\u4e2a\u6620\u5c04\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u5bf9\u5e94\u5173\u7cfb\u7531\u5b58\u653e\u5728\u8ba1\u7b97\u673a\u4e0a\u7684\u4e00\u4e2a\u6587\u4ef6\u7ed9\u51fa\uff0c\u8fd9\u4e2a\u6587\u4ef6\u4e5f\u5c31\u662f\u4f20\u8bf4\u4e2d\u7684hosts\u3002<\/p>\n<p>\u5728\u4e92\u8054\u7f51\u65e9\u671f\uff0c\u6574\u4e2a\u7f51\u7edc\u4e2d\u7684\u4e3b\u673a\u6570\u91cf\u6bd4\u8f83\u5c11\uff0c\u4f7f\u7528hosts\u6587\u4ef6\u8fdb\u884c<strong>\u4e3b\u673a\u540d<\/strong>\u2014IP\u5730\u5740\u7684\u8f6c\u6362\u662f\u4e00\u4e2a\u53ef\u884c\u7684\u65b9\u6848\u3002\u7136\u800c\u968f\u7740\u8fde\u5165\u4e92\u8054\u7f51\u7684\u4e3b\u673a\u89c4\u6a21\u7684\u589e\u957f\uff0c\u4eba\u4eec\u53d1\u73b0\u8fd9\u79cd\u5b8c\u5168\u79bb\u7ebf\u7684hosts\u6587\u4ef6\u4e0d\u592a\u9760\u5f97\u4f4f\uff0c\u4e00\u6765\u5b83\u7531\u4eba\u624b\u5de5\u7ef4\u62a4\uff0c\u518d\u8005\u5728\u4e0d\u540c\u7684\u4e3b\u673a\u4e0a\u540c\u6b65hosts\u975e\u5e38\u9ebb\u70e6\uff0c\u4e5f\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n<p>\u57281973\u5e74\uff0cIETF\uff08\u56fd\u9645\u4e92\u8054\u7f51\u5de5\u7a0b\u4efb\u52a1\u7ec4\uff09\u53d1\u5e03\u4e86<a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc606.txt\" target=\"_blank\" rel=\"noopener\">RFC 606<\/a>\uff0c<a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc608.txt\" target=\"livinginternet_ext\">RFC 608<\/a>\u7b49\u51e0\u4e2a\u6587\u6863\uff0c\u51b3\u5b9a\u7531<a href=\"http:\/\/www.sri.com\/\" target=\"livinginternet_ext\">\u65af\u5766\u798f\u7814\u7a76\u9662<\/a>\u7f51\u7edc\u4fe1\u606f\u4e2d\u5fc3\uff08NIC\uff09\u4f5c\u4e3ahosts\u6587\u4ef6\u7684\u5b98\u65b9\u6765\u6e90\uff0c\u4e92\u8054\u7f51\u4e0a\u7684\u6240\u6709\u4e3b\u673a\u5747\u4ece\u8be5\u4e2d\u5fc3\u4e0b\u8f7dhosts\u6587\u4ef6\u4f7f\u7528\u3002\u8fd9\u5957\u65b9\u6848\u4ece1973\u52301983\u8fd0\u4f5c\u4e86\u5dee\u4e0d\u591a\u5341\u5e74\u65f6\u95f4\u3002\u76f8\u6bd4\u4e8e70\u5e74\u4ee3\uff0c\u5341\u5e74\u540e\u7684\u4e3b\u673a\u6570\u91cf\u5df2\u7ecf\u5e9e\u5927\u5f97\u8ba9\u8fd9\u5957\u7cfb\u7edf\u5f97\u7f3a\u9677\u4e5f\u88ab\u66b4\u9732\u51fa\u6765\uff1a\u7531\u4e8e\u4e3b\u673a\u7684\u589e\u52a0\uff0chosts\u6587\u4ef6\u50cf\u6eda\u96ea\u7403\u4e00\u822c\u53d8\u5f97\u8d8a\u6765\u8d8a\u5927\u3002\u66f4\u7cdf\u7cd5\u7684\u662f\u4e3b\u673a\u540d\u5230IP\u5730\u5740\u7684\u6620\u5c04\u5173\u7cfb\u4e0d\u662f\u56fa\u5b9a\u7684\uff0c\u6362\u4eba\u8bdd\u8bf4\uff0c\u90a3\u5c31\u662f\u4e00\u53f0\u4e3b\u673a\u7684IP\u5730\u5740\u53ef\u80fd\u968f\u65f6\u95f4\u53d1\u751f\u53d8\u5316\u3002\u4e3b\u673a\u6570\u91cf\u8d8a\u591a\uff0c\u6587\u4ef6\u7684\u53d8\u5316\u7387\u4e5f\u5c31\u8d8a\u5927\u3002\u4ee5\u81f3\u4e8e\u5230\u540e\u671f\u6bcf\u5929\u90fd\u8981\u4eceNIC\u91cd\u65b0\u4e0b\u8f7d\u6700\u65b0\u7684hosts\u6587\u4ef6\u3002<\/p>\n<p>\u57281982\u5e74\u7684\u4e00\u6b21\u7535\u8111\u90ae\u4ef6\u7684\u4f1a\u8bae\u4e0a\uff0c\u963f\u5e15\u7f51\u7684\u5de5\u7a0b\u5e08\u63d0\u51fa\u4e86\u4e00\u4e2a\u89e3\u51b3\u7535\u5b50\u90ae\u4ef6\u8def\u7531\u7684\u65b9\u6848\u3002\u5728\u90a3\u4e2a\u5e74\u4ee3\uff0c\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u662f\u4e00\u4ef6\u9ebb\u70e6\u4e8b\u3002\u7531\u4e8e\u4e0d\u662f\u6240\u6709\u7684\u4e3b\u673a\u90fd\u76f4\u63a5\u63a5\u5165\u4e92\u8054\u7f51\uff0c\u4e00\u5c01\u90ae\u4ef6\u53ef\u80fd\u9700\u8981\u901a\u8fc7\u51e0\u4e2a\u4e0d\u540c\u7684\u4e3b\u673a\u4e2d\u8f6c\uff0c\u6700\u7ec8\u624d\u80fd\u53d1\u9001\u5230\u76ee\u6807\u7528\u6237\u7684\u90ae\u7bb1\u3002\u800c\u53d1\u9001\u8005\u9700\u8981\u624b\u5de5\u6309\u987a\u5e8f\u5730\u6307\u5b9a\u4e2d\u95f4\u7ecf\u8fc7\u7684\u7cfb\u7edf\u540d\u79f0\u3002\u4e0d\u540c\u7684\u7cfb\u7edf\u4e4b\u95f4\u4f7f\u7528\uff01\u8fdb\u884c\u5206\u5272\uff0c\u4e00\u4e2a\u771f\u5b9e\u7684\u5730\u5740\u770b\u8d77\u6765\u50cf\u8fd9\u6837\uff1a<\/p>\n<blockquote>\n<p style=\"text-align:center;\">utzoo<b>!<\/b>decvax<b>!<\/b>harpo<b>!<\/b>eagle<b>!<\/b>mhtsa<b>!<\/b>ihnss<b>!<\/b>ihuxp<b>!<\/b>grg<\/p>\n<\/blockquote>\n<p>\u4e2d\u95f4\u7684\u4e00\u8fde\u4e32\u4e3b\u673a\u9700\u8981\u4eba\u4e3a\u7ed9\u51fa\uff0c\u8981\u662f\u4e0d\u77e5\u9053\u4e2d\u95f4\u9700\u8981\u7ecf\u8fc7\u90a3\u4e9b\u4e3b\u673a\uff0c\u4f60\u7684\u90ae\u4ef6\u5c31\u65e0\u6cd5\u53d1\u9001\u3002\u4e3a\u4e86\u8ba9\u90ae\u4ef6\u53d1\u9001\u4e0d\u518d\u5982\u6b64\u7e41\u7410\uff0c\u5de5\u7a0b\u5e08\u4eec\u5728\u4f1a\u8bae\u4e0a\u8ba8\u8bba\u51fa\u6765\u4e86\u4e00\u79cd\u53eb\u505a\u201c<strong>\u57df\u540d<\/strong>\u201d\u7684\u6982\u5ff5\uff0c\u8ba8\u8bba\u7684\u5185\u5bb9\u4ee5\u6587\u6863\u7684\u5f62\u5f0f\u516c\u5f00\u53d1\u5e03\u4e86\u51fa\u6765\uff0c\u8fd9\u5c31\u662f<a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc805.txt\" target=\"livinginternet_ext\">RFC 805<\/a>\uff0c\u5b83\u4e5f\u662f\u4e92\u8054\u7f51\u57df\u540d\u7684\u96cf\u5f62\u3002<\/p>\n<p><a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc805.txt\" target=\"livinginternet_ext\">RFC 805<\/a>\u4e2d\u63d0\u51fa\u4e86\u8bb8\u591a\u73b0\u4ee3\u57df\u540d\u7684\u4e00\u4e9b\u539f\u5219\uff0c\u6bd4\u5982\u9700\u8981\u6709\u4e00\u4e2a\u57df\u540d\u6ce8\u518c\u673a\u6784\uff0c\u9700\u8981\u6709\u4e00\u7cfb\u5217\u9876\u7ea7\u57df\u540d\u4f5c\u4e3a\u57df\u540d\u67e5\u8be2\u8d77\u59cb\u70b9\u3002<\/p>\n<p>\u8fd9\u6b21\u4f1a\u8bae\u4e4b\u540e\uff0c\u4e00\u7cfb\u5217\u7684RFC\u6587\u6863\u5728\u5f53\u5e74\u76f8\u7ee7\u53d1\u5e03\u3002<a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc830.txt\" target=\"livinginternet_ext\">RFC 830<\/a>\u63d0\u51fa\u4e86<strong>\u4e00\u79cd\u5206\u5e03\u5f0f\u7684\u57df\u540d\u670d\u52a1<\/strong>\uff0c\u5b83\u4e3a\u73b0\u4eca\u7684\u57df\u540d\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e3b\u4f53\u67b6\u6784\u3002\u800c<a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc882.txt\" target=\"livinginternet_ext\">RFC 882<\/a>\u548c<a href=\"http:\/\/www.rfc-editor.org\/rfc\/rfc883.txt\" target=\"livinginternet_ext\">RFC 883<\/a>\u5219\u5bf9\u6574\u4e2a\u57df\u540d\u89e3\u6790\u6d41\u7a0b\u548c\u6570\u636e\u5305\u7ed3\u6784\u505a\u51fa\u4e86\u5b9a\u4e49\u3002<\/p>\n<p>\u57281987\u5e74\uff0cIETF\u53d1\u5e03\u4e86<a href=\"https:\/\/tools.ietf.org\/html\/rfc1034\" target=\"_blank\" rel=\"noopener\">RFC 1034<\/a> \u548c<a href=\"https:\/\/tools.ietf.org\/html\/rfc1035\" target=\"_blank\" rel=\"noopener\">RFC 1035<\/a>\u6b63\u5f0f\u6807\u51c6\uff0c\u8fd9\u4e24\u4efd\u6807\u51c6\u7684\u51fa\u53f0\u6807\u5fd7\u7740DNS\u7684\u6b63\u5f0f\u8d70\u4e0a\u5386\u53f2\u821e\u53f0\u3002<\/p>\n<hr>\n<h3>\u57df\u540d\u7cfb\u7edf\u7684\u5de5\u4f5c\u6d41\u7a0b<\/h3>\n<p>DNS\u662f\u4e00\u79cd\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5b83\u5e95\u5c42\u4f7f\u7528<strong>UDP<\/strong>\u548c<strong>TCP<\/strong>\u534f\u8bae\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3002<\/p>\n<p>\u4f7f\u7528UDP\u7684\u539f\u56e0\u662f\u5b83\u6ca1\u6709\u63e1\u624b\uff0c\u4e0d\u7528\u5efa\u7acb\u8fde\u63a5\uff0c\u67e5\u8be2\u7684\u901f\u5ea6\u66f4\u5feb\u3002\u800cTCP\u5219\u80fd\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u9760\u4f20\u8f93\uff0c\u4e5f\u6ca1\u6709UDP\u6570\u636e\u5305\u90a3\u4e48\u4e25\u82db\u7684\u6570\u636e\u5305\u5c3a\u5bf8\u9650\u5236\uff0c\u4f46\u662f\u5b83\u4f1a\u589e\u52a0\u4e00\u4e9b\u63e1\u624b\u5f00\u9500\u3002<\/p>\n<p>DNS\u4e5f\u662f\u4e00\u79cd\u57fa\u7840\u7f51\u7edc\u670d\u52a1\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u53ef\u9760\u6027\uff0c\u5b83\u91c7\u7528\u4e86\u4e00\u79cd\u5206\u5e03\u5f0f\u67b6\u6784\uff0c\u8fd9\u80fd\u907f\u514d\u4ea7\u751f\u5355\u70b9\u6545\u969c\u5f71\u54cd\u6574\u4e2a\u7f51\u7edc\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u82e5\u8981\u7ec6\u8bf4DNS\uff0c\u90a3\u5c31\u4e0d\u5f97\u4e0d\u4ece\u57df\u540d\u5f00\u59cb\uff0c\u6bd5\u7adfDNS\u4e09\u4e2a\u5b57\u6bcd\u91cc\u9762\u5b83\u5c31\u5360\u4e86\u4fe9\uff08\u57df\u540d\uff1aDomain Name\uff09<\/p>\n<p>\u57df\u540d\u662f\u5565\uff1f\u76f8\u4fe1\u4f60\u54ea\u6015\u4e0d\u662f\u6562\u62cd\u80f8\u812f\u7684\u8bf4\u4f60\u7279\u522b\u4e86\u89e3\uff0c\u4e5f\u516b\u6210\u542c\u8bf4\u8fc7\u8fd9\u4e48\u4e2a\u4e1c\u897f\u3002<\/p>\n<p>\u6ca1\u9519\uff0c\u4f60\u73b0\u5728\u8bbf\u95ee\u672c\u7f51\u7ad9\u7684\u65f6\u5019\uff0c\u4f60\u6d4f\u89c8\u5668\u5730\u5740\u680f\u4e0a\u663e\u793a\u7684\u5730\u5740<strong><code>https:\/\/yangwang.hk\/xxx<\/code><\/strong>\uff0c\u5176\u4e2d\u7684<strong><code>yangwang.hk<\/code><\/strong>\u5c31\u662f\u672c\u7f51\u7ad9\u7684\u57df\u540d\u3002<\/p>\n<p>\u57df\u540d\u5177\u6709\u4e00\u79cd<strong>\u5c42\u7ea7<\/strong>\u5173\u7cfb\u3002\u5c42\u4e0e\u5c42\u4e4b\u95f4\u4f7f\u7528<strong>\u201c.\u201d<\/strong>\u9694\u5f00\uff0c<strong>yangwang.hk<\/strong>\u5c31\u80fd\u88ab\u62c6\u5206\u4e3a\u4e24\u5c42\uff0c\u4e00\u4e2a\u662f<strong><code>yangwang<\/code><\/strong>\uff0c\u53e6\u4e00\u4e2a\u662f<strong><code>hk<\/code><\/strong>\uff0c\u5728\u82f1\u6587\u4e2d\uff0c\u70b9\u4e0e\u70b9\u4e4b\u95f4\u7684\u90e8\u5206\u88ab\u79f0\u4f5c<strong>label<\/strong>\u3002<\/p>\n<p>\u57df\u540d\u7684\u5c42\u7ea7\u5173\u7cfb\u662f\u5012\u7740\u770b\u7684\uff0c<strong>hk<\/strong>\u662f\u4e00\u7ea7\u57df\u540d\uff0c\u4e5f\u88ab\u79f0\u4e3a<strong>\u9876\u7ea7\u57df\u540d<\/strong>\uff08Top Level Domain\uff0c<strong>TLD<\/strong>\uff09\uff0c\u5728\u9876\u7ea7\u57df\u540d\u5de6\u8fb9\u7684\u662f\u4e8c\u7ea7\u57df\u540d\uff0c\u4e5f\u5c31\u662f<strong>yangwang<\/strong>\u3002<\/p>\n<p>\u5176\u5b9eyangwang.hk\u53ea\u662f\u57df\u540d\u7684\u7f29\u7565\u5199\u6cd5\uff0c\u5b83\u7684\u5b8c\u6574\u5f62\u5f0f\u662f\uff1a<strong><code>yangwang.hk.<\/code><\/strong><\/p>\n<p>\u6ca1\u9519\uff0c\u5c31\u662f\u6700\u540e\u672b\u5c3e\u591a\u4e86\u4e2a<strong>\u201c.\u201d<\/strong>\uff0c\u5f88\u591a\u56fd\u5185\u6559\u6750\u91cc\u5c06\u8fd9\u4e2a\u70b9\u79f0\u4e3a<strong>\u6839\u57df\u540d(Root Domain)<\/strong>\uff0c\u5176\u5b9e\u5e76\u4e0d\u5b8c\u5168\u6b63\u786e\uff0c\u6216\u8005\u8bf4\u5c31\u662f<span style=\"color:#ff0000;\"><strong>\u9519\u8bef<\/strong><\/span>\u7684\u3002<\/p>\n<p>\u4ece\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u8bf4\uff0c\u6839\u57df\u540d\u4e0d\u662f\u72ec\u7acb\u5b58\u5728\u7684\uff0c\u5b83\u53ea\u662f\u4e00\u4e2a\u903b\u8f91\u6982\u5ff5\u3002<strong>\u6839\u57df\u540d\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u4e0d\u5305\u542b\u4efb\u4f55\u5b57\u7b26\uff0c\u957f\u5ea6\u4e3a0\u7684label<\/strong>\u3002\u5bf9\u4e8eyangwang.hk.\uff0c\u53ef\u4ee5\u5206\u89e3\u4e3a\u4e09\u4e2alabel\uff0c\u5206\u522b\u662f\u201c<code>yangwang<\/code>\u201d\uff0c\u201c<code>hk<\/code>\u201d\u548c\u4e0d\u5305\u542b\u4efb\u4f55\u5b57\u7b26\u7684\u6839\u57df\u540d\u201c\u201d\u3002<\/p>\n<p>\u7531\u4e8e\u57df\u540d\u7684label\u4e4b\u95f4\u4f7f\u7528.\u5206\u5272\uff0c\u4e8e\u662f\u4e4e\u5982\u679c\u4e00\u4e2a\u57df\u540d\u5305\u542b\u4e86\u6839\u57df\u540d\uff0c\u90a3\u4e48\u5b83\u5199\u51fa\u6765\u7684\u7684\u6837\u5b50\u4fbf\u662f\u6700\u540e\u591a\u4e86\u4e00\u4e2a\u70b9\uff0c\u6bd5\u7adf\u5565\u90fd\u6ca1\u6709\uff0c\u5199\u51fa\u6765\u4e86\u4f60\u4e5f\u770b\u4e0d\u89c1\u662f\u4e0d\u662f\uff1f\u2026\u2026<\/p>\n<p>\u7531\u4e8e\u672c\u8eab\u957f\u5ea6\u4e3a0\uff0c\u800c\u5982\u679c\u6211\u4eec\u53c8\u60f3\u5c55\u793a\u5b83\uff0c\u90a3\u4e5f<strong>\u53ea\u80fd\u901a\u8fc7\u4e66\u5199\u4e00\u4e2a.\u7684\u65b9\u6cd5\u6765\u6012\u5237\u5b83\u7684\u5b58\u5728\u611f\u4e86\uff0c<\/strong>\u5728\u8fd9\u6837\u7684\u80cc\u666f\u4e0b\u6211\u4eec\u624d\u80fd\u8bf4\u6839\u57df\u540d\u662f<strong>\u201c.\u201d<\/strong>\u3002\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8981\u8bbe\u8ba1\u51fa\u4e00\u4e2a\u5982\u6b64\u5947\u602a\u7684root domain\u5462\uff1f\u5728\u4e0b\u4e00\u7bc7\u6587\u7ae0\u91cc\u6211\u4eec\u5bf9DNS\u6570\u636e\u5305\u7684\u683c\u5f0f\u8fdb\u884c\u5206\u6790\u540e\uff0c\u8fd9\u4e2a\u95ee\u9898\u7684\u7b54\u6848\u5c31\u81ea\u7136\u51fa\u6765\u4e86\uff0c\u8fd9\u91cc\u4fbf\u5148\u5356\u4e2a\u5173\u5b50\u3002<\/p>\n<p>\u6839\u57df\u540d\u5728\u4e66\u5199\u65f6\u7684\u552f\u4e00\u75d5\u8ff9\u53ea\u662f\u57df\u540d\u672b\u5c3e\u7684\u4e00\u4e2a\u70b9\uff0c\u800c\u6309\u7167\u57df\u540d\u7684\u5c42\u6b21\u7ed3\u6784\u5212\u5206\uff0c\u6240\u6709\u57df\u540d\u90fd\u5904\u4e8e\u6839\u57df\u540d\u4e4b\u4e0b\uff0c\u56e0\u6b64\u8fd9\u4e2a\u70b9\u4e5f\u5c31\u6beb\u65e0\u60ac\u5ff5\u7684\u88ab\u7701\u7565\u4e86\u3002<\/p>\n<p>\u8fd9\u79cd\u5e26\u6839\u57df\u540d\u7684\u5199\u6cd5\u88ab\u53eb\u505a<strong>FQDN<\/strong>\uff08Full Qualified Domain Name\uff0c\u5168\u79f0\u57df\u540d\/\u5b8c\u5168\u9650\u5b9a\u57df\u540d\uff09\uff0c\u800c\u65e5\u5e38\u4f7f\u7528\u7684\u4e0d\u5e26\u70b9\u7684\u7248\u672c\uff0c\u5219\u88ab\u79f0\u4e3a<strong>PQDN<\/strong>(Partiallly Qualified Domain Name\uff0c\u90e8\u5206\u9650\u5b9a\u57df\u540d)\u3002<\/p>\n<p>\u5bf9\u4e8e\u57df\u540d<code>www.example.com<\/code>\uff0c<code>api.example.com<\/code>\u548c<code>google.com<\/code>\uff0c\u5b83\u7684\u7ed3\u6784\u4fbf\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><a href=\"https:\/\/yangwang.hk\/?attachment_id=853\" rel=\"attachment wp-att-853\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-853 size-full aligncenter\" src=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/domain.png\" alt=\"\" width=\"621\" height=\"361\" data-temp-aztec-id=\"fbdcab86-5e42-404b-90c0-abdcaef2b8fc\" srcset=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/domain.png 621w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/domain-300x174.png 300w\" sizes=\"auto, (max-width: 621px) 100vw, 621px\" \/><\/a><\/p>\n<p>\u6574\u4e2a\u57df\u540d\u7684\u5206\u914d\u662f\u7531ICANN\u7ba1\u7406\u7684\uff0c\u8fd9\u662f\u4e00\u5bb6\u4f4d\u4e8e\u7f8e\u56fd\u7684\u975e\u76c8\u5229\u673a\u6784\u3002ICANN\u76f4\u63a5\u51b3\u5b9a\u4e86\u90a3\u4e9b\u57df\u540d\u80fd\u4f5c\u4e3a\u9876\u7ea7\u57df\u540d\u3002<\/p>\n<p>\u9876\u7ea7\u57df\u540d\u663e\u7136\u4e0d\u6b62\u56fe\u4e2d\u5217\u51fa\u7684\u4e09\u4e2a\u3002\u5b9e\u9645\u4e0a\u9876\u7ea7\u57df\u540d\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u4e09\u5927\u7c7b\uff0c\u5206\u522b\u662f<\/p>\n<ul>\n<li>\u901a\u7528\u9876\u7ea7\u57df\u540d\uff08<strong>gTLD<\/strong>\uff09\uff0c\u5305\u542b\u8d5e\u52a9\u9876\u7ea7\u57df\u540d\uff08<strong>sTLD<\/strong>\uff09\u548c\u975e\u8d5e\u52a9\u9876\u7ea7\u57df\u540d<\/li>\n<li>\u56fd\u5bb6\/\u5730\u533a\u9876\u7ea7\u57df\u540d\uff08<strong>ccTLD<\/strong>\uff09<\/li>\n<li>\u57fa\u7840\u8bbe\u65bd\u9876\u7ea7\u57df\u540d<strong>.arpa<\/strong><\/li>\n<\/ul>\n<p>\u901a\u7528\u9876\u7ea7\u57df\u540d\u662f\u6700\u5e38\u89c1\u7684\u57df\u540d\uff0c\u5b83\u53c8\u53ef\u4ee5\u5206\u4e3a<strong>\u8d5e\u52a9<\/strong>\u548c<strong>\u975e\u8d5e\u52a9<\/strong>\u4e24\u7c7b\u3002<\/p>\n<p><strong>\u8d5e\u52a9\u9876\u7ea7\u57df\u540d<\/strong>\u80cc\u540e\u6709\u4e00\u4e2a\u7279\u5b9a\u7684\u8d5e\u52a9\u5546\uff0c\u6bd4\u5982gov\u57df\u540d\u80cc\u540e\u662f<a title=\"\" href=\"https:\/\/en.wikipedia.org\/wiki\/General_Services_Administration\">General Services Administration<\/a>\uff0cdev\u57df\u540d\u80cc\u540e\u662fGoogle\u3002\u57282010\u5e74\u4ee5\u524d\uff0cICANN \u5bf9\u65b0\u9876\u7ea7\u57df\u540d\u7684\u5ba1\u6838\u6bd4\u8f83\u4e25\u683c\uff0c\u4f46\u57282010\u4e4b\u540e\uff0cICANN\u6279\u51c6\u516c\u53f8\u53ef\u4ee5\u4ee5\u81ea\u5df1\u7684\u5546\u6807\u6ce8\u518c\u65b0\u7684TLD\uff0c\u4e8e\u662f\u4e4e\u4e00\u5927\u6279\u65b0\u7684TLD\u51fa\u73b0\u4e86\u3002\u4e0e\u4e4b\u76f8\u5bf9\u7684\u975e\u8d5e\u52a9\u57df\u540d\u5219\u6ca1\u6709\u5bf9\u5e94\u7684\u201c\u8d5e\u52a9\u5546\u201d\uff0c\u7b80\u5355\u5730\u8bf4\uff0c\u5c31\u662f\u5b83\u5e76\u4e0d\u5f52\u5c5e\u67d0\u4e2a\u516c\u53f8\u6216\u7ec4\u7ec7\u6240\u6709\uff0cICANN\u5bf9\u975e\u8d5e\u52a9\u57df\u540d\u6709\u7ba1\u7406\u6743\u3002\u975e\u8d5e\u52a9\u57df\u540d\u4e0d\u591a\uff0c\u8001\u7684\u6709com,net,org\u57df\u540d\uff0c\u65b0\u7684\u6709info\u7b49\u57df\u540d\u3002<\/p>\n<p>\u56fd\u5bb6\u548c\u5730\u533a\u9876\u7ea7\u57df\u540d<strong>ccTLD<\/strong>\u662f\u6839\u636e<strong>ISO 3166 alpha-2<\/strong>\u6807\u51c6\u5b9a\u4e49\u7684\u4e24\u5b57\u8282\u56fd\u5bb6\u5730\u533a\u7801\u89c4\u5b9a\u7684\u3002ICANN\u89c4\u5b9a<strong>\u4e24\u4e2a\u5b57\u6bcd<\/strong>\u7684\u9876\u7ea7\u57df\u540d\u4e00\u5b9a\u662fccTLD\uff0c\u800cccTLD\u4e5f\u4e00\u5b9a\u662f\u4e24\u4e2a\u5b57\u6bcd\u3002<\/p>\n<p>\u57fa\u7840\u8bbe\u65bd\u57df\u540d\u662f\u4e00\u7c7b\uff08\u4e2a\uff09\u975e\u5e38\u7279\u6b8a\u7684TLD\uff0c\u5b83\u53ea\u6709.arpa\u8fd9\u4e00\u4e2a\u9876\u7ea7\u57df\u540d\u3002arpa\u5176\u5b9e\u662fARPANET\u7684\u7f29\u5199\uff0c\u4e5f\u5c31\u662f\u73b0\u4ee3\u82f1\u7279\u7f51\u7684\u524d\u8eab\u963f\u5e15\u7f51\u3002<\/p>\n<p>arpa\u5b9e\u9645\u4e0a\u662f\u5168\u4e16\u754c\u7b2c\u4e00\u4e2aTLD\uff0c\u5b83\u6700\u521d\u7684\u76ee\u7684\u53ea\u662f\u4e34\u65f6\u4f7f\u7528\uff0c\u7528\u4e8e\u5c06\u4f20\u7edfARPANET\u7684\u4e3b\u673a\u540d\u8f6c\u6362\u5230\u57df\u540d\u7cfb\u7edf\u91cc\u6765\u3002\u4e0d\u8fc7\u5728arpa\u88ab\u7528\u4e8e\u53cd\u5411\u89e3\u6790\uff08\u901a\u8fc7IP\u89e3\u6790\u51fa\u57df\u540d\uff09\u4e4b\u540e\uff0c\u4eba\u4eec\u53d1\u73b0\u5e9f\u5f03\u8fd9\u4e2aTLD\u4f3c\u4e4e\u4e0d\u592a\u5408\u9002\u4e86\u3002\u5728\u73b0\u4ee3\u4e92\u8054\u7f51\u91cc\uff0carpa\u53ea\u88ab\u7528\u4e8e\u4e00\u4e9b\u7279\u6b8a\u7684\u67e5\u8be2\uff0c\u6bd4\u5982in-addr.arpa\u7528\u4e8e\u53cd\u5411IPv4\u67e5\u8be2\uff0cip6.arpa\u7528\u4e8e\u53cd\u5411IPv6\u67e5\u8be2\u3002\u7531\u4e8e\u5386\u53f2\u539f\u56e0\uff0c\u6709\u4e9b\u65f6\u5019\u4e5f\u628a\u5b83\u770b\u4f5c\u662f\u4e00\u4e2a\u901a\u7528TLD\u3002<\/p>\n<h3>\u57df\u540d\u7cfb\u7edf\u7684\u67b6\u6784<\/h3>\n<p>\u4e92\u8054\u7f51\u4e0a\u57df\u540d\u7684\u6570\u91cf\u662f\u6781\u5176\u5e9e\u5927\u7684\uff0c\u622a\u6b62\u52302019\u5e746\u6708\uff0c\u9876\u7ea7\u57df\u540d\u5c31\u6709\u591a\u8fbe<strong>1530<\/strong>\u4e2a\u3002\u800c\u5728\u6bcf\u4e2a\u9876\u7ea7\u57df\u540d\u4e0b\u9762\u8fd8\u6709\u4ee5<strong>\u767e\u4e07\u8ba1<\/strong>\u7684\u4e8c\u7ea7\u57df\u540d\u3002\u57282018\u5e74\u5e95\uff0c\u5168\u7403\u4e8c\u7ea7\u57df\u540d\u7684\u6570\u91cf\u5c31\u63a5\u8fd1<strong>3.5<\/strong>\u4ebf\u4e2a\u3002\u800c\u4e8c\u7ea7\u57df\u540d\u4e0b\u9762\u8fd8\u6709\u4e09\u7ea7\u751a\u81f3\u56db\u7ea7\u57df\u540d\u3002\u5982\u6b64\u591a\u7684\u57df\u540d\u5982\u679c\u91c7\u7528\u4e2d\u5fc3\u5316\u7684\u5355\u70b9\u67b6\u6784\uff0c\u4e00\u6765\u5b58\u5728\u4e25\u91cd\u7684\u6027\u80fd\u95ee\u9898\uff0c\u4e8c\u6765\u53ef\u9760\u6027\u4e5f\u6ee1\u8db3\u4e0d\u4e86\u8981\u6c42\u3002<\/p>\n<p>DNS\u7cfb\u7edf\u91c7\u7528\u4e86\u7c7b\u4f3c\u57df\u540d\u7ed3\u6784\u7684\u6811\u72b6\u7ed3\u6784\uff0c\u6309\u7167\u57df\u540d\u7684\u5c42\u6b21\u5173\u7cfb\u5c06\u57df\u540d\u5206\u4e3a\u82e5\u5e72<strong>\u7ba1\u7406\u533a\u57df<\/strong>\uff0c\u6bcf\u4e2a\u533a\u57df\u53ea\u8d1f\u8d23\u81ea\u5df1\u7ba1\u8f96\u8303\u56f4\u5185\u7684\u57df\u540d\u89e3\u6790\u3002\u8fd9\u4e2a\u7ba1\u7406\u533a\u4fbf\u662fZone\u3002<\/p>\n<p>\u4ece\u524d\u6587www.example.com\u57df\u540d\u7684\u7ed3\u6784\u56fe\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u6240\u6709\u7684xxx.com\u57df\u540d\u90fd\u5c5e\u4e8e.com\u8fd9\u4e2a\u9876\u7ea7\u57df\u540d\uff0c\u800c\u6240\u6709\u7684\u9876\u7ea7\u57df\u540d\u90fd\u5c5e\u4e8e.\u6839\u57df\u540d\u3002<\/p>\n<p>\u5728\u53d1\u8d77\u4e00\u6b21DNS\u67e5\u8be2\u65f6\u5c31<strong>\u4ee5\u8fd9\u4e2a\u6839\u57df\u540d\u4f5c\u4e3a\u51fa\u53d1\u70b9<\/strong>\uff0c\u5bf9<strong>\u6839\u57df\u540d<\/strong>\u7684\u67e5\u8be2\u4f1a\u544a\u8bc9\u4f60\uff0c\u4f60\u67e5\u8be2\u7684<strong>\u67d0\u4e2a\u9876\u7ea7\u57df\u540d<\/strong>\u5f52\u90a3\u51e0\u53f0\u670d\u52a1\u5668\u7ba1\u7406\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u6839\u57df\u540d\u670d\u52a1\u5668\u91cc\u5b58\u653e\u4e86\u4e00\u5f20\u8868\uff0c\u8868\u7684\u5185\u5bb9\u662f\u9876\u7ea7\u57df\u540d\u548c\u5bf9\u5e94\u7684\u6258\u7ba1\u5546\uff08\u4e0b\u4e00\u6b65\u8981\u53bb\u54ea\u4e2a\u670d\u52a1\u5668\u67e5\u8be2\uff09\uff0c\u4e5f\u5c31\u662f\u6240\u8c13\u7684\u6839\u533a\uff08root zone\uff09\u3002\u6839\u533a\u6587\u4ef6\u53ef\u4ee5\u5728ICANN\u5b98\u7f51\u4e0a\u67e5\u770b\uff0c\u5730\u5740\u662f<a href=\"https:\/\/www.internic.net\/domain\/root.zone\">https:\/\/www.internic.net\/domain\/root.zone<\/a>\uff0c\u6587\u4ef6\u6bd4\u8f83\u5927\uff0c\u56e0\u4e3a\u5b83\u5305\u542b\u4e86\u6240\u6709\u9876\u7ea7\u57df\u540d\u7684\u6258\u7ba1\u4fe1\u606f\u3002<\/p>\n<p>\u4ee5www.example.com\u57df\u540d\u4e3a\u4f8b\uff0c\u8981\u67e5\u8be2www.example.com\uff0c\u5c31\u5fc5\u987b\u5148\u8be2\u95ee\u6839\u57df\u540d\u670d\u52a1\u5668\uff0c\u6839\u57df\u540d\u670d\u52a1\u5668\u4e0d\u4f1a\u5b58\u653e\u8fd9\u4e2a\u57df\u540d\u7684\u89e3\u6790\u7ed3\u679c\uff0c\u56e0\u4e3a\u6839\u57df\u540d\u670d\u52a1\u5668\u53ea\u4f1a\u8d1f\u8d23\u89e3\u6790root zone\uff0c\u597d\u5728root zone\u91cc\u6709\u5bf9\u5e94\u7684.com\u57df\u540d\u7684\u89e3\u6790\u670d\u52a1\u5668\uff0c\u4e8e\u662f\u4fbf\u4f1a\u8fd4\u56de<strong>NS<\/strong>\u8bb0\u5f55\uff0c\u5185\u5bb9\u662f<strong>.com<\/strong>\u57df\u540d\u7531<strong>foo<\/strong>\u670d\u52a1\u5668\u6258\u7ba1\uff0c\u4f60\u4e0b\u4e00\u6b65\u5e94\u8be5\u627e\u5b83\u3002<\/p>\n<p>\u63a5\u7740\uff0c\u4f60\u9700\u8981\u5411<strong>foo<\/strong>\u670d\u52a1\u5668\u518d\u53d1\u9001\u4e00\u6b21\u8bf7\u6c42\uff0c\u4e00\u822c\u6765\u8bf4\u9876\u7ea7\u57df\u540d\u670d\u52a1\u5668<strong>foo<\/strong>\u4e5f\u4e0d\u4f1a\u5b58\u653eexample.com\u57df\u540d\u7684\u5177\u4f53\u4fe1\u606f\uff0c\u5b83\u540c\u6837\u4f1a\u4ee5NS\u8bb0\u5f55\u7684\u5f62\u5f0f\u8fd4\u56deexample.com\u57df\u540d\u7531<strong>bar<\/strong>\u670d\u52a1\u5668\u7ba1\u7406\u3002\uff08ps\uff1a\u8fd9\u91cc\u7684foo\u548cbar\u663e\u7136\u4e0d\u662f\u771f\u5b9e\u7684\u5730\u5740\uff09<\/p>\n<p>\u4e8e\u662f\u4e4e\u4f60\u53c8\u5411bar\u670d\u52a1\u5668\u53d1\u9001\u4e00\u6b21\u67e5\u8be2\uff0c\u5927\u591a\u6570\u65f6\u5019\u5230\u8fd9\u91cc\u4f60\u5c31\u80fd\u62ff\u5230\u6700\u7ec8\u7684\u7ed3\u679c\u3002\u4e0d\u8fc7www.example.com\u7684\u4e09\u7ea7\u57df\u540dwww\u5b8c\u5168\u4e5f\u53ef\u4ee5\u7531\u53e6\u4e00\u53f0\u670d\u52a1\u5668\u7ba1\u7406\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0bbar\u670d\u52a1\u5668\u4e5f\u4f1a\u8fd4\u56de\u548c\u524d\u9762\u67e5\u8be2\u7c7b\u4f3c\u7684\u6d88\u606f\uff0c\u544a\u8bc9\u4f60\u4e0b\u4e00\u6b65\u5e94\u8be5\u627e\u8c01\u53bb\u67e5\u8be2\u3002\u6574\u4e2a\u6d41\u7a0b\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p><a href=\"https:\/\/yangwang.hk\/?attachment_id=866\" rel=\"attachment wp-att-866\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-866 size-full aligncenter\" src=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/dns2.png\" alt=\"DNS\u8fed\u4ee3\u67e5\u8be2\u6d41\u7a0b\u56fe\" width=\"621\" height=\"587\" srcset=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/dns2.png 621w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/dns2-300x284.png 300w\" sizes=\"auto, (max-width: 621px) 100vw, 621px\" \/><\/a><\/p>\n<p>DNS\u6839\u670d\u52a1\u5668(DNS root server)\u662f\u4e00\u5207DNS\u67e5\u8be2\u7684\u8d77\u70b9\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u53ef\u9760\u6027\uff0c\u6574\u4e2aDNS\u7cfb\u7edf\u5728\u5168\u7403\u4e00\u5171\u8bbe\u7f6e\u4e86<strong>13<\/strong>\u53f0\u670d\u52a1\u5668\uff0c\u7f16\u53f7\u4eceA\u5230M\uff0c\u4ed6\u4eec\u5206\u522b\u662f<code>a.root-servers.net<\/code>\u5230<code>m.root-servers.net<\/code>\u300213\u8fd9\u4e2a\u6570\u5b57\u662f\u7531\u4e8e\u4e92\u8054\u7f51\u4e0a\u6807\u51c6\u7684UDP\u6570\u636e\u5305\u957f\u5ea6\u6700\u5927\u4e3a512\u5b57\u8282\uff0c\u800c\u4e3a\u4e86\u5728\u4e00\u4e2a\u6570\u636e\u5305\u5185\u5b58\u653e\u6240\u6709\u7684\u6839\u670d\u52a1\u5668\u7684\u4fe1\u606f\uff0c\u6839\u670d\u52a1\u5668\u7684\u6570\u91cf\u5c31\u88ab\u9650\u5236\u5230\u4e8613\u3002<\/p>\n<p>\u51c6\u786e\u7684\u8bf4\uff0c13\u4e2a\u6839\u670d\u52a1\u5668\u662f<strong>\u903b\u8f91\u4e0a<\/strong>\u768413\uff0c\u5b9e\u9645\u4e0a\u662f13\u7ec4\u670d\u52a1\u5668\u3002\u5176\u4e2da.root-servers.net\u662f\u4e3b\u6839\u670d\u52a1\u5668\uff0c\u5176\u4f59\u768412\u4e2a\u662f\u8f85\u6839\u3002\u800c\u6bcf\u4e2a\u6839\u670d\u52a1\u5668\u7ec4\u8fd8\u4f1a\u6709\u5bf9\u5e94\u7684\u8bb8\u591a\u955c\u50cf\u670d\u52a1\u5668\u3002\u8fd9\u4e9b\u6839\u670d\u52a1\u5668\u5e7f\u6cdb\u7684\u5206\u5e03\u4e8e\u5168\u7403\u5404\u4e2a\u533a\u57df\u3002\u57282019\u5e747\u670828\u65e5\uff0c\u5171\u67091006\u4e2a\u6839\u670d\u52a1\u5668\u6b63\u5728\u8fd0\u884c\u3002\u6211\u56fd\u67098\u53f0\u955c\u50cf\u6839\uff0c\u5176\u4e2d\u5317\u4eac5\u53f0\uff0c\u4e0a\u6d773\u53f0\u3002<\/p>\n<p><a href=\"https:\/\/yangwang.hk\/?attachment_id=867\" rel=\"attachment wp-att-867\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-867 size-large\" src=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/chrome_2019-08-02_23-42-24-1024x456.png\" alt=\"\" width=\"665\" height=\"296\" srcset=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/chrome_2019-08-02_23-42-24-1024x456.png 1024w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/chrome_2019-08-02_23-42-24-300x134.png 300w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/chrome_2019-08-02_23-42-24-768x342.png 768w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/chrome_2019-08-02_23-42-24-660x294.png 660w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/chrome_2019-08-02_23-42-24.png 1422w\" sizes=\"auto, (max-width: 665px) 100vw, 665px\" \/><\/a><\/p>\n<p>\u4f60\u53ef\u4ee5\u5728<a href=\"https:\/\/root-servers.org\/\" target=\"_blank\" rel=\"noopener\">https:\/\/root-servers.org\/<\/a>\u67e5\u8be2\u5230\u5b83\u4eec\u5b9e\u65f6\u7684\u5177\u4f53\u72b6\u6001\u548c\u4f4d\u7f6e\u3002<\/p>\n<p>\u867d\u7136\u6839\u670d\u52a1\u5668\u6709\u57df\u540d\uff0c\u4f46\u662f\u663e\u7136\u5fc5\u987b\u5148\u77e5\u9053\u5176\u4e2d\u67d0\u4e2a\u670d\u52a1\u5668\u7684\u5177\u4f53IP\u5730\u5740\uff0c\u6211\u4eec\u624d\u80fd\u5f00\u59cb\u67e5\u8be2\u3002\u5426\u5219\uff0c\u90a3\u5c31\u662f\u60f3\u5de6\u811a\u8e29\u53f3\u811a\u4e0a\u5929\u4e86\u3002<\/p>\n<p>\u6839\u670d\u52a1\u5668\u7684\u5730\u5740\u4e00\u822c\u662f\u4e0d\u4f1a\u53d8\u5316\u7684\uff08\u4e0d\u662f\u4e0d\u53d8\uff0c<a href=\"https:\/\/h.root-servers.org\/renumber.html\">H\u6839<\/a>\u5c31\u57282015\u5e74\u6539\u53d8\u8fc7IP\u5730\u5740\uff09\uff0c\u56e0\u6b64\u6839\u670d\u52a1\u5668\u7684\u5730\u5740\u4e00\u822c\u5728\u8f6f\u4ef6\u91cc\u5199\u6b7b\uff0c\u6216\u8005\u7531\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u76f4\u63a5\u63d0\u4f9b\u3002<\/p>\n<p>\u4f7f\u7528dig\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5b8c\u6574\u7684\u57df\u540d\u89e3\u6790\u6d41\u7a0b\uff0c\u8fd8\u662f\u4ee5www.example.com\u4e3a\u4f8b\uff0c\u4f7f\u7528\u547d\u4ee4\uff1a<\/p>\n<p><code>dig @1.0.0.1 www.example.com a +trace +nodnssec<\/code><\/p>\n<p><a href=\"https:\/\/yangwang.hk\/?attachment_id=859\" rel=\"attachment wp-att-859\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-859 aligncenter\" src=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-22-20.png\" alt=\"\" width=\"847\" height=\"794\" srcset=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-22-20.png 847w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-22-20-300x281.png 300w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-22-20-768x720.png 768w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-22-20-660x619.png 660w\" sizes=\"auto, (max-width: 847px) 100vw, 847px\" \/><\/a><\/p>\n<p>\u6574\u4e2a\u89e3\u6790\u8fc7\u7a0b\u88ab\u5206\u4e3a\u4e86\u56db\u6bb5\uff0c\u9996\u5148\uff1a<code>1.0.0.1<\/code>\u88ab\u7528\u4f5cDNS\u670d\u52a1\u5668\u67e5\u8be213\u4e2a\u6839\u670d\u52a1\u5668\u7684\u5730\u5740\uff0c\u8fd9\u4e2aIP\u662f\u6211\u4eec\u5728\u6267\u884c\u547d\u4ee4\u65f6\u624b\u5de5\u6307\u5b9a\u7684\u3002<\/p>\n<p>\u8fd9\u6b21\u67e5\u8be2\u8fd4\u56de\u4e8613\u53f0\u6839\u670d\u52a1\u5668\u7684\u5730\u5740\u3002<\/p>\n<p>\u968f\u540edig\u9009\u62e9\u4e86IP\u5730\u5740\u4e3a<code>192.36.148.17<\/code>\u7684I\u6839\u670d\u52a1\u5668\u67e5\u8be2\u5230\u4e86.com\uff0c\u8fd9\u6b21\u67e5\u8be2\u8fd4\u56de\u4e86\u4e0b\u9762\u7684\u5730\u5740\uff1a<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ncom. 172800 IN NS k.gtld-servers.net.\ncom. 172800 IN NS l.gtld-servers.net.\ncom. 172800 IN NS c.gtld-servers.net.\ncom. 172800 IN NS j.gtld-servers.net.\n...\ncom. 172800 IN NS g.gtld-servers.net.\ncom. 172800 IN NS h.gtld-servers.net.\ncom. 172800 IN NS e.gtld-servers.net.\ncom. 172800 IN NS m.gtld-servers.net.\n<\/pre>\n<p>\u8fd913\u4e2a\u670d\u52a1\u5668\u4fbf\u662fcom\u8fd9\u4e2a\u9876\u7ea7\u57df\u540d\u7684DNS\u670d\u52a1\u5668\uff0c<\/p>\n<p>\u7136\u540e\uff0cdig\u9009\u62e9\u4e86IP\u4e3a<code>2001:503:39c1::30<\/code>\u7684<code>i.gtld-servers.net<\/code>\u8fdb\u884c\u4e0b\u4e00\u6b65\u67e5\u8be2\uff0c\u8fd9\u6b21\u8fd4\u56de\u4e86\u4e24\u4e2a\u5730\u5740\uff1a<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nexample.com. 172800 IN NS a.iana-servers.net.\nexample.com. 172800 IN NS b.iana-servers.net.\n<\/pre>\n<p>\u8fd9\u4e24\u4e2a\u5730\u5740\u5bf9\u5e94\u7684\u4fbf\u662f\u7ba1\u7406<code>example.com<\/code>\u8fd9\u4e2a\u57df\u540d\u7684DNS\u670d\u52a1\u5668\uff0c\u5373example.com\u7684\u6743\u5a01\u670d\u52a1\u5668\u3002\u56e0\u4e3a\u4e0b\u4e00\u6b21\u5411IP\u4e3a<code>2001:500:8f::53<\/code>\u7684<code>a.iana-servers.net<\/code>\u670d\u52a1\u5668\u53d1\u8d77\u8bf7\u6c42\u540e\u6211\u4eec\u4fbf\u76f4\u63a5\u5f97\u5230\u4e86\u5bf9\u5e94\u57df\u540d\u7684\u6700\u7ec8\u67e5\u8be2\u7ed3\u679c\uff0c\u5373<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nwww.example.com. 86400 IN A 93.184.216.34\n<\/pre>\n<p>\u8fd9\u79cd\u4e00\u6b65\u6b65\u7684\u67e5\u8be2\u8fc7\u7a0b\u53eb\u505a<strong>\u8fed\u4ee3\u67e5\u8be2<\/strong>\uff0c\u4e0d\u8fc7\u5728\u6211\u4eec\u65e5\u5e38\u751f\u6d3b\u4e2d\u66f4\u5e38\u7528\u7684\u662f<strong>\u9012\u5f52\u67e5\u8be2<\/strong>\u3002\u9012\u5f52\u67e5\u8be2\u7684\u8fc7\u7a0b\u662f\uff1a\u6211\u4eec\u5411<strong>\u9012\u5f52\u670d\u52a1\u5668<\/strong>\u53d1\u9001\u4e00\u4e2a\u67e5\u8be2\u8bf7\u6c42\uff0c\u968f\u540e<strong>\u9012\u5f52\u670d\u52a1\u5668\u4f1a\u4e3a\u6211\u4eec\u8fdb\u884c\u8fed\u4ee3\u67e5\u8be2<\/strong>\uff0c\u6700\u7ec8\u5c06\u7ed3\u679c\u76f4\u63a5\u8fd4\u56de\u7ed9\u6211\u4eec\u3002<\/p>\n<p>\u8fd9\u79cd\u67e5\u8be2\u7684\u7279\u70b9\u4fbf\u662f\u6211\u4eec\u4e0d\u518d\u9700\u8981\u4ece\u6839\u670d\u52a1\u5668\u5f00\u59cb\u4e00\u5c42\u5c42\u7684\u5411\u4e0b\u67e5\u8be2\uff0c\u53ea\u9700\u8981\u4e00\u6b21\u8bf7\u6c42\u6211\u4eec\u4fbf\u80fd\u4ece\u9012\u5f52\u670d\u52a1\u5668\u4e0a\u83b7\u53d6\u5230\u6211\u4eec\u60f3\u8981\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u9012\u5f52\u67e5\u8be2\u7684\u4f18\u52bf\u5f88\u660e\u663e\uff1a\u670d\u52a1\u5668\u53ef\u4ee5\u5c06\u67e5\u8be2\u7ed3\u679c<strong>\u7f13\u5b58<\/strong>\u4e0b\u6765\u3002\u5982\u679c\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u518d\u6b21\u67e5\u8be2\u8fd9\u4e2a\u57df\u540d\uff0c\u76f4\u63a5\u8fd4\u56de\u7f13\u5b58\u7684\u7ed3\u679c\u5373\u53ef\u3002\u8fd9\u4e0d\u4ec5\u51cf\u8f7b\u4e86\u6574\u5957\u57df\u540d\u7cfb\u7edf\u7684\u67e5\u8be2\u538b\u529b\uff0c\u4e5f\u80fd\u5927\u5927\u63d0\u9ad8\u67e5\u8be2\u7684\u901f\u5ea6\uff0c\u6bd5\u7adf\u4e00\u6b21\u8fed\u4ee3\u67e5\u8be2\u662f\u975e\u5e38\u8017\u65f6\u95f4\u7684\u3002<\/p>\n<p>\u5728\u4e0a\u9762\u67e5\u8be2\u7ed3\u679c\u7684\u57df\u540d\u540e\u9762\u90fd\u6709\u4e00\u4e2a\u6570\u5b57\uff0c\u6bd4\u5982example.com\u540e\u9762\u768486400\uff0c\u8fd9\u4e2a\u6570\u5b57\u4fbf\u662fTTL\uff0c\u5b83\u7684\u610f\u601d\u662f\u4f60\u6700\u591a\u53ef\u4ee5\u628a\u7ed3\u679c\u7f13\u5b58TTL\u79d2\u3002\u5f53\u7f13\u5b58\u65f6\u95f4\u8d85\u8fc7TTL\u65f6\uff0c\u4f60\u5728\u4e0b\u6b21\u67e5\u8be2\u65f6\u4fbf\u9700\u8981\u4e22\u5f03\u8fd9\u4e2a\u7f13\u5b58\u7684\u7ed3\u679c\uff0c\u4ece\u5934\u5f00\u59cb\u4e00\u6b21\u65b0\u7684\u8fed\u4ee3\u6216\u8005\u9012\u5f52\u67e5\u8be2\u3002<\/p>\n<p>\u9012\u5f52\u670d\u52a1\u5668\u867d\u7136\u4e5f\u80fd\u8fd4\u56de\u67d0\u4e2a\u57df\u540d\u7684\u67e5\u8be2\u7ed3\u679c\uff0c\u4f46\u4ece\u67e5\u8be2\u8fc7\u7a0b\u5c31\u53ef\u4ee5\u770b\u51fa\uff0c\u7ed9\u6211\u4eec\u63d0\u4f9b\u67e5\u8be2\u7ed3\u679c\u7684\uff0c\u4e0d\u662f\u5bf9\u8fd9\u4e2a\u57df\u540d\u6709<strong>\u771f\u5b9e\u7ba1\u7406\u6743<\/strong>\u7684\u670d\u52a1\u5668\uff0c\u6b64\u65f6\uff0c\u8be5\u670d\u52a1\u5668\u4f1a\u88ab\u79f0\u4e3a\u975e\u6743\u5a01\u670d\u52a1\u5668\u3002\u800c\u975e\u6743\u5a01\u670d\u52a1\u5668\u8fd4\u56de\u7684\u54cd\u5e94\u6570\u636e\u91cc\u4f1a\u5305\u542b\u4e00\u4e2a\u6807\u8bb0\uff1a<strong>\u975e\u6743\u5a01\u5e94\u7b54<\/strong>\uff0c\u4e0e\u4e4b\u76f8\u5bf9\u7684\u5219\u662f<strong>\u6743\u5a01\u5e94\u7b54<\/strong>\u3002\u6743\u5a01\u5e94\u7b54\u8868\u793a\u63d0\u4f9b\u8be5\u7ed3\u679c\u7684\u670d\u52a1\u5668\u5bf9\u8be5\u6761\u8bb0\u5f55\u6709\u7ba1\u7406\u6743\u3002<\/p>\n<p>\u4f7f\u7528nslookup\u547d\u4ee4\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u5dee\u5f02\uff1a<\/p>\n<p><a href=\"https:\/\/yangwang.hk\/?attachment_id=860\" rel=\"attachment wp-att-860\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-860 size-full aligncenter\" src=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-50-03.png\" alt=\"\" width=\"820\" height=\"366\" srcset=\"https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-50-03.png 820w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-50-03-300x134.png 300w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-50-03-768x343.png 768w, https:\/\/yangwang.hk\/wp-content\/uploads\/2019\/07\/cmd_2019-07-28_17-50-03-660x295.png 660w\" sizes=\"auto, (max-width: 820px) 100vw, 820px\" \/><\/a><\/p>\n<p>\u5176\u4e2d\u7b2c\u4e00\u6b21\u67e5\u8be2\u9009\u62e9\u7684\u662f\u8def\u7531\u5668\u4e0a\u7684DNS\u670d\u52a1\u5668\uff0c\u7531\u4e8e\u5b83\u5bf9example.com\u6ca1\u6709\u7ba1\u8f96\u6743\uff0c\u56e0\u6b64\u8fd4\u56de\u7684\u7ed3\u679c\u4e2d\u6709Non-authoritative\u7684\u63d0\u793a\uff0c\u800c\u7b2c\u4e8c\u6b21\u67e5\u8be2\u5219\u4f7f\u7528\u7684\u662fexample.com\u7684\u6743\u5a01\u670d\u52a1\u5668\uff0c\u8fd9\u65f6\u67e5\u8be2\u7684\u7ed3\u679c\u4e0d\u5305\u542b\u8be5\u6807\u8bb0\u3002<\/p>\n<h2>DNS\u7684\u7f3a\u9677\u4e0e\u89e3\u51b3\u65b9\u6cd5<\/h2>\n<p>\u5728DNS\u51fa\u53f0\u51e0\u5341\u5e74\u540e\u7684\u4eca\u5929\uff0c\u4e92\u8054\u7f51\u65e9\u5df2\u4e0d\u50cf\u66fe\u7ecf\u7684\u4e92\u8054\u7f51\u90a3\u4e48\u7b80\u5355\u4e0e\u7eaf\u7cb9\uff0c\u65e9\u671fDNS\u8bbe\u8ba1\u7684\u4e00\u4e9b\u95ee\u9898\u4e5f\u9010\u6e10\u66b4\u9732\u51fa\u6765\u4e86\u3002\u4e3b\u8981\u6709\u4e24\u5927\u65b9\u9762\uff1a<\/p>\n<ul>\n<li>UDP DNS\u6570\u636e\u5305\u957f\u5ea6\u4e3a512\u5b57\u8282\uff0c\u4e0d\u592a\u80fd\u652f\u6491\u73b0\u4ee3\u7684\u67e5\u8be2\u9700\u6c42\u3002DNS\u5728\u8bbe\u8ba1\u65f6\u5bf9\u90e8\u5206\u5b57\u6bb5\u8bbe\u8ba1\u8fc7\u4e8e\u4fdd\u5b88\uff0c\u6bd4\u5982RCODE\u7b49\u5b57\u6bb5\u5df2\u7ecf\u57fa\u672c\u5206\u914d\u5b8c\u6bd5\u3002<\/li>\n<li>DNS\u7cfb\u7edf\u662f\u660e\u6587\u4f20\u8f93\u7684\uff0c\u534f\u8bae\u5185\u6ca1\u6709\u4efb\u4f55\u5b89\u5168\u6821\u9a8c\u673a\u5236\uff0c\u5b58\u5728\u5b89\u5168\u9690\u60a3<\/li>\n<\/ul>\n<h3>DNS\u7684\u683c\u5f0f\u95ee\u9898<\/h3>\n<p>\u524d\u9762\u63d0\u5230\u8fc7\uff0c\u9274\u4e8e\u4e92\u8054\u7f51\u6807\u51c6UDP\u5c3a\u5bf8\u4e3a512\uff0c\u4f7f\u7528UDP\u8fdb\u884cDNS\u67e5\u8be2\u65f6\uff0c\u8fd4\u56de\u7684\u7ed3\u679c\u4e5f\u53d7\u9650\u4e8e512\u5b57\u8282\uff0c\u5728\u8bbe\u8ba1DNS\u534f\u8bae\u65f6\uff0c\u8bbe\u8ba1\u8005\u76f4\u63a5\u5c06DNS\u6570\u636e\u5305\u9650\u5236\u5230\u4e86512B\u3002\u5728\u65e9\u671f\u4e92\u8054\u7f51\u4e2d\uff0c\u8fd9\u4e2a\u7a7a\u95f4\u662f\u975e\u5e38\u5145\u8db3\u7684\uff0c\u4f46\u73b0\u5982\u4ecaDNS\u7684\u7528\u9014\u66f4\u4e3a\u590d\u6742\uff0c512B\u7684\u957f\u5ea6\u9650\u5236\u5c31\u663e\u5f97\u6709\u4e9b\u6349\u895f\u89c1\u8098\u4e86\u3002\u800c\u73b0\u5728\u7684\u4e92\u8054\u7f51\u5bf9\u4e8e\u5927\u4e8e512\u5b57\u8282\u7684UDP\u6570\u636e\u5305\u4e5f\u51e0\u4e4e\u4e0d\u5b58\u5728\u4f20\u8f93\u95ee\u9898\uff0c\u4ecd\u7136\u4f7f\u7528512B\u7684\u9650\u5236\u4fbf\u663e\u5f97\u6709\u4e9b\u4e0d\u5408\u7406\u3002\u540c\u65f6\uff0c\u90e8\u5206\u5b57\u6bb5\u548cFLAG\u6807\u8bb0\u4f4d\u7684\u8003\u8651\u4e0d\u5145\u5206\uff0c\u539f\u59cbDNS\u534f\u8bae\u51e0\u4e4e\u65e0\u6cd5\u6dfb\u52a0\u65b0\u7684\u9700\u6c42\u4e86\u3002<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\u662f\u5728\u4fdd\u6301\u517c\u5bb9\u7684\u524d\u63d0\u4e0b\uff0c\u5bf9\u73b0\u6709DNS\u534f\u8bae\u505a\u5347\u7ea7\u6269\u5c55\u3002\u5728<a href=\"http:\/\/www.ietf.org\/rfc\/rfc2671.txt\">RFC2671<\/a>\u4e2d\u63d0\u51fa\u4e86\u4e00\u79cd\u5bf9\u73b0\u6709DNS\u534f\u8bae\u8fdb\u884c\u6269\u5c55\u7684\u65b9\u6cd5\uff0c\u88ab\u79f0\u4e3aEDNS0(Extension Mechanisms for DNS version 0)\u3002<\/p>\n<p>EDNS0\u5728\u5b8c\u5168\u517c\u5bb9RFC1035\u89c4\u5b9a\u7684\u6807\u51c6DNS\u683c\u5f0f\u7684\u57fa\u7840\u4e0a\uff0c\u5927\u5927\u6269\u5c55\u4e86DNS\u7684\u529f\u80fd\uff0c\u540c\u65f6\u4e5f\u4fee\u6539\u4e86DNS\u6570\u636e\u5305\u7684\u957f\u5ea6\u9650\u5236\uff0c\u4f7f\u5176\u81f3\u5c11\u80fd\u8fbe\u52304096 \u4e2a\u5b57\u8282\u3002<\/p>\n<p>EDNS\u5c06\u5728\u4ecb\u7ecdDNS\u534f\u8bae\u90e8\u5206\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n<h3>DNS\u7684\u5b89\u5168\u95ee\u9898<\/h3>\n<p>DNS\u534f\u8bae\u5728\u8bbe\u8ba1\u4e4b\u521d\u5e76\u6ca1\u6709\u8003\u8651\u5230\u5b89\u5168\u6027\u95ee\u9898\uff0c\u6574\u4e2aDNS\u534f\u8bae\u5728\u4e92\u8054\u7f51\u4e0a\u90fd\u662f\u6ca1\u6709\u4efb\u4f55\u6821\u9a8c\u7684\u660e\u6587\u4f20\u8f93\u7684\u3002<\/p>\n<p>\u8fd9\u610f\u5473\u7740\u5728\u57df\u540d\u89e3\u6790\u6d41\u7a0b\u4e2d\uff0c\u4ece\u6211\u4eec\u5ba2\u6237\u7aef\u5230\u6743\u5a01\u670d\u52a1\u5668\u7684\u4efb\u4f55\u4e00\u73af\uff0c\u90fd\u80fd\u8f7b\u677e\u83b7\u53d6\u5230\u6211\u4eec\u6240\u8bf7\u6c42\u7684\u57df\u540d\u548c\u57df\u540d\u89e3\u6790\u7684\u7ed3\u679c\u3002\u66f4\u7cdf\u7cd5\u7684\u662f\uff0c\u5927\u591a\u6570\u60c5\u51b5\u4e0bDNS\u6240\u4f7f\u7528\u7684UDP\u6570\u636e\u5305\u672c\u8eab\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u8fd9\u610f\u5473\u7740\u6211\u4eec\u6839\u672c\u65e0\u6cd5\u786e\u8ba4\u6211\u4eec\u6240\u6536\u5230\u7684\u89e3\u6790\u7ed3\u679c\uff0c\u5230\u5e95\u662f\u4ece\u771f\u5b9e\u670d\u52a1\u5668\u53d1\u9001\u8fc7\u6765\u7684\uff0c\u8fd8\u662f\u653b\u51fb\u8005\u4f2a\u9020\u7684\u3002<\/p>\n<p>\u5229\u7528DNS\u7684\u8fd9\u4e2a\u7f3a\u9677\uff0c\u6709\u4e24\u79cd\u5e38\u89c1\u7684\u653b\u51fb\u624b\u6bb5\uff0c\u5206\u522b\u662f<strong>DNS\u52ab\u6301<\/strong>\u548c<strong>DNS\u6c61\u67d3<\/strong><\/p>\n<p><strong>DNS\u52ab\u6301<\/strong>\u662f\u5728\u5ba2\u6237\u7aef\u8fdb\u884cDNS\u67e5\u8be2\u65f6\uff0c\u901a\u4fe1\u94fe\u8def\u4e2d\u7684\u67d0\u4e00\u4e2a\u90e8\u5206<strong>\u7be1\u6539<\/strong>\u54cd\u5e94\u7ed3\u679c\u7684\u6570\u636e\u5305\uff0c\u6216\u8005\u76f4\u63a5<strong>\u4f2a\u9020<\/strong>\u51fa\u4e00\u4e2a\u865a\u5047\u7684DNS\u54cd\u5e94\u5305\u7684\u653b\u51fb\u3002<\/p>\n<p>DNS\u52ab\u6301\u7684\u540e\u679c\u662f\u4e00\u4e2a\u57df\u540d\u7684\u89e3\u6790\u7ed3\u679c\u53ef\u4ee5\u88ab\u653b\u51fb\u8005\u4efb\u610f\u7684\u64cd\u63a7\u3002\u6bd4\u5982\u4f60\u60f3\u8bbf\u95ee\u4e00\u4e2a\u94f6\u884c\u7f51\u7ad9\uff0c\u4f46\u653b\u51fb\u8005\u5077\u5077\u7be1\u6539\u4e86\u94f6\u884c\u57df\u540d\u89e3\u6790\u51fa\u7684IP\uff0c\u5c06\u5176\u6307\u5411\u4e86\u653b\u51fb\u8005\u90e8\u7f72\u7684\u9493\u9c7c\u7f51\u7ad9\uff0c\u90a3\u4e48\u867d\u7136\u6d4f\u89c8\u5668\u5c71\u4e0a\u770b\u5230\u7684\u57df\u540d\u5e76\u6ca1\u6709\u4ec0\u4e48\u53d8\u5316\uff0c\u4f46\u662f\u4f60\u5b9e\u9645\u8bbf\u95ee\u7684\u7f51\u7ad9\u65e9\u5df2\u548c\u771f\u5b9e\u7684\u94f6\u884c\u7f51\u7ad9\u6ca1\u6709\u534a\u6bdb\u94b1\u5173\u7cfb\u4e86\u3002<\/p>\n<p><strong>DNS\u6c61\u67d3<\/strong>\u5f71\u54cd\u7684\u8303\u56f4\u5f80\u5f80\u4f1a\u66f4\u5927\uff0c\u5b83\u5229\u7528\u7684\u662fDNS\u7ed3\u679c\u4f1a\u5728\u9012\u5f52\u670d\u52a1\u5668\u7f13\u5b58\u7684\u7279\u70b9\uff0c\u82e5\u80fd\u7be1\u6539\u9012\u5f52\u670d\u52a1\u5668\u7f13\u5b58\u7684\u7ed3\u679c\uff0c\u90a3\u4e48\u5c31\u80fd\u8ba9\u6240\u6709\u4f7f\u7528\u8be5\u670d\u52a1\u5668\u67e5\u8be2\u7684\u5ba2\u6237\u7aef\uff0c\u83b7\u5f97\u7684\u67e5\u8be2\u7ed3\u679c\u662f\u653b\u51fb\u8005\u6240\u6307\u5b9a\u7684\u3002\u7531\u4e8e\u9012\u5f52DNS\u540c\u6837\u8981\u8fdb\u884c\u8fed\u4ee3\u67e5\u8be2\uff0c\u5982\u679c\u6211\u4eec\u80fd\u5728\u8fed\u4ee3\u67e5\u8be2\u7684\u65f6\u5019\u8fdb\u884cDNS\u52ab\u6301\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u5b9e\u73b0DNS\u6c61\u67d3\u3002<\/p>\n<p>\u8fdb\u884cDNS\u6c61\u67d3\u7684\u653b\u51fb\u8005\u5f80\u5f80\u662fISP\uff08\u7f51\u7edc\u8fd0\u8425\u5546\uff09\u548c\u56fd\u5bb6\u653f\u5e9c\uff0c\u56e0\u4e3a\u4ed6\u4eec\u638c\u63e1\u4e86\u4e92\u8054\u7f51\u7684\u9aa8\u5e72\u8282\u70b9\uff0c\u751a\u81f3\u662fDNS\u6839\u57df\u540d\u7684\u955c\u50cf\u670d\u52a1\u5668\uff0c\u80fd\u8f7b\u677e\u7684\u5bf9DNS\u6570\u636e\u5305\u8fdb\u884c\u4f2a\u9020\u3002<\/p>\n<p><del>\u4f8b\u5982\u67d0\u56fd\u7684\u9632\u706b\u5899\u6b63\u662f\u4f7f\u7528\u8be5\u6280\u672f\u963b\u6b62\u6c11\u4f17\u8bbf\u95ee\u5230\u67d0\u4e9b\u7f51\u7ad9\u3002<\/del><\/p>\n<p>\u5bf9\u6297DNS\u653b\u51fb\u7684\u57fa\u672c\u89e3\u51b3\u65b9\u6848\u662f\u5bf9DNS\u89e3\u6790\u7684\u7ed3\u679c\u8fdb\u884c\u7b7e\u540d\u3002\u4f7f\u7528\u6570\u5b57\u7b7e\u540d\u6280\u672f\u5bf9\u89e3\u6790\u7ed3\u679c\u7b7e\u540d\uff0c\u6211\u4eec\u4fbf\u80fd\u5f97\u77e5\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u771f\u5b9e\u7684\uff0c\u8fd8\u662f\u653b\u51fb\u8005\u4f2a\u9020\u7684\u3002<\/p>\n<p>\u4e3a\u6b64\uff0c<a href=\"https:\/\/tools.ietf.org\/html\/rfc2535\">RFC2535<\/a>\u63d0\u51fa\u4e86\u4e00\u79cdDNS\u5b89\u5168\u6269\u5c55\uff0c\u5b83\u88ab\u79f0\u4e3aDNSSEC(Domain Name System Security Extensions)\u3002\u8fd9\u4e2a\u6269\u5c55\u63d0\u4f9b\u4e86\u4e00\u79cd\u6765\u6e90\u9274\u5b9a\u548c\u6570\u636e\u5b8c\u6574\u6027\u68c0\u67e5\u7684\u624b\u6bb5\u3002\u542f\u7528DNSSEC\u4e4b\u540e\uff0c\u5f53\u5ba2\u6237\u7aef\u53d1\u73b0\u89e3\u6790\u7684\u7ed3\u679c\u662f\u9519\u8bef\u7684\uff0c\u4fbf\u4f1a\u76f4\u63a5\u4e22\u5f03\u8be5\u7ed3\u679c\uff0c\u4ee5\u6b64\u6765\u907f\u514d\u653b\u51fb\u8005\u5f97\u624b\u3002\u663e\u7136\uff0c<strong>\u8fd9\u4e2a\u6280\u672f\u6ca1\u6709\u4fdd\u8bc1\u53ef\u7528\u6027<\/strong>\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c<strong>\u8981\u4e48\u89e3\u6790\u51fa\u6b63\u786e\u7ed3\u679c\uff0c\u8981\u4e48\u5c31\u6ca1\u7ed3\u679c<\/strong>\u3002\u867d\u7136\u7b80\u5355\u7c97\u66b4\uff0c\u4f46\u603b\u6bd4\u4e0a\u4e86\u5047\u7f51\u7ad9\uff0c\u88ab\u5356\u4e86\u8fd8\u5e2e\u4eba\u6570\u94b1\u8981\u597d\u4e00\u4e9b\u3002<\/p>\n<p>\u7136\u800c\u7406\u60f3\u5f88\u4e30\u6ee1\uff0c\u73b0\u5b9e\u5f88\u9aa8\u611f\u3002\u76ee\u524d\u56fd\u5185\u7684DNS\u5bf9\u8fd9\u4e2a\u4e0a\u4e2a\u4e16\u7eaa\u5c31\u63d0\u51fa\u7684\u5b89\u5168\u6269\u5c55\u652f\u6301\u57fa\u672c\u4e3a0\uff0c\u8fd9\u5176\u4e2d\u5230\u5e95\u662f\u7531\u4e8e<del>\u653f\u6cbb\u56e0\u7d20<\/del>\u8fd8\u662f\u6280\u672f\u539f\u56e0\u6291\u6216\u662f\u4ec0\u4e48\u522b\u7684\u539f\u56e0\uff0c\u6211\u4eec\u4e5f\u5c31\u4e0d\u5f97\u800c\u77e5\u4e86\u3002\u597d\u5728\uff0c\u9664\u4e86DNSSEC\uff0c\u6211\u4eec\u8fd8\u80fd\u4f7f\u7528HTTPS\u6280\u672f\u6765\u4fdd\u969c\u6211\u4eec\u8bbf\u95ee\u7684\u7f51\u7ad9\u662f\u771f\u5b9e\u7684\u3002<\/p>\n<p>DNS\u7684\u4ecb\u7ecd\u90e8\u5206\u5927\u6982\u5c31\u5230\u8fd9\u91cc\u4e86\uff0c\u4e0b\u4e00\u7bc7\u6587\u7ae0\u5f00\u59cb\uff0c\u6211\u4eec\u5c06\u4f1a\u8be6\u7ec6\u53c8\u5b8c\u6574\u7684\u4e86\u89e3\u6574\u4e2aDNS\u534f\u8bae\u3002<\/p>\n<h2>\u53c2\u8003\u8d44\u6599\uff1a<\/h2>\n<p><a href=\"https:\/\/tools.ietf.org\/html\/rfc1035\">https:\/\/tools.ietf.org\/html\/rfc1035<\/a><\/p>\n<p><a href=\"https:\/\/www.livinginternet.com\/i\/iw_dns_history.htm\">https:\/\/www.livinginternet.com\/i\/iw_dns_history.htm<\/a><\/p>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Top-level_domain\">https:\/\/en.wikipedia.org\/wiki\/Top-level_domain<\/a><\/p>\n<p><a href=\"http:\/\/www.omnisecu.com\/tcpip\/fully-qualified-domain-name-fqdn-and-partially-qualified-domain-name-pqdn.php\">http:\/\/www.omnisecu.com\/tcpip\/fully-qualified-domain-name-fqdn-and-partially-qualified-domain-name-pqdn.php<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u7528Golang\u5b9e\u73b0\u4e00\u4e2aDNS\u670d\u52a1\u5668\u7cfb\u5217\u7b2c\u4e8c\u90e8\u5206\u7684\u4e0a\u7bc7\u3002 \u8981\u60f3\u5b9e\u73b0\u4e00\u4e2a\u4e0a\u7bc7\u5185\u63cf\u7ed8\u7684DNS Server\u2026 <span class=\"read-more\"><a href=\"https:\/\/yangwang.hk\/?p=852\">Read More: DNS\u7684\u5386\u53f2\u548c\u539f\u7406 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-852","post","type-post","status-publish","format-standard","hentry","category-9"],"views":2103,"_links":{"self":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=852"}],"version-history":[{"count":14,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/852\/revisions"}],"predecessor-version":[{"id":875,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/852\/revisions\/875"}],"wp:attachment":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}