{"id":1212,"date":"2019-04-01T14:51:44","date_gmt":"2019-04-01T14:51:44","guid":{"rendered":"https:\/\/getwid.getmotopress.com\/?p=15"},"modified":"2022-12-30T08:49:00","modified_gmt":"2022-12-30T08:49:00","slug":"start-your-business-analyst-career","status":"publish","type":"post","link":"http:\/\/www.dingjunkj.com\/?p=1212","title":{"rendered":"\u667a\u80fdDNS\u89e3\u6790"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\" id=\"h3-u4ECBu7ECD\">\u4ecb\u7ecd<\/h3>\n\n\n\n<p>\u4f20\u7edf<code>DNS<\/code>\u89e3\u6790\uff0c\u4e0d\u5224\u65ad\u8bbf\u95ee\u8005\u6765\u6e90\uff0c\u4f1a\u968f\u673a\u9009\u62e9\u5176\u4e2d\u4e00\u4e2a IP \u5730\u5740\u8fd4\u56de\u7ed9\u8bbf\u95ee\u8005\u3002\u800c\u667a\u80fd DNS \u89e3\u6790\uff0c\u4f1a\u5224\u65ad\u8bbf\u95ee\u8005\u7684\u6765\u6e90<code>(ECS)<\/code>\uff0c\u4e3a\u4e0d\u540c\u7684\u8bbf\u95ee\u8005\u667a\u80fd\u8fd4\u56de\u4e0d\u540c\u7684 IP \u5730\u5740\uff0c\u53ef\u4f7f\u8bbf\u95ee\u8005\u5728\u8bbf\u95ee\u7f51\u7ad9\u65f6\u53ef\u83b7\u53d6\u7528\u6237\u6307\u5b9a\u7684 IP \u5730\u5740\uff0c\u80fd\u591f\u51cf\u5c11\u89e3\u6790\u65f6\u5ef6\uff0c\u5e76\u63d0\u5347\u7f51\u7ad9\u8bbf\u95ee\u901f\u5ea6\u7684\u529f\u6548<\/p>\n\n\n\n<p>\u6743\u5a01 DNS \u53ef\u4ee5\u6839\u636e\u4fe1\u606f\u505a\u51fa\u4e0d\u540c\u54cd\u5e94\uff0c\u6bd4\u5982\u53ef\u5c06\u79fb\u52a8\u7528\u6237\u89e3\u6790\u5230\u79fb\u52a8\u8282\u70b9\u3001\u8054\u901a\u7528\u6237\u89e3\u6790\u5230\u8054\u901a\u8282\u70b9\uff0c\u7535\u4fe1\u7528\u6237\u89e3\u6790\u5230\u7535\u4fe1\u8282\u70b9\u7b49\uff0c\u5f53\u7136\u4e86\uff0c EDNS \u53ef\u4ee5\u505a\u5230\u7684\u4e0d\u6b62\u6309\u8fd0\u8425\u5546\u5206\u522b\u89e3\u6790\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h4-ecs\">ECS<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>edns-client-subnet<\/li>\n<\/ul>\n\n\n\n<p>\u5728\u4e4b\u524d\uff0c\u5b83\u4f7f\u7528 DNS \u89e3\u6790\u5668(LocalDNS)\u7684 IP \u5730\u5740\u5bf9\u5185\u5bb9\u8fdb\u884c DNS \u67e5\u8be2\u3002\u5728\u7279\u5b9a\u89e3\u6790\u5668\u5177\u6709\u5355\u4e00\u56fa\u5b9a\u5730\u7406\u4f4d\u7f6e\u7684\u65f6\u4ee3\uff0c\u6b64\u6a21\u578b\u8fd0\u884c\u826f\u597d\u3002\u4eca\u5929\uff0c\u8bb8\u591a\u6d41\u884c\u7684 DNS \u89e3\u6790\u5668\u5728\u5730\u7406\u4e0a\u5206\u6563\uff08Google DNS \u548c OpenDNS \u662f\u4e24\u4e2a\u5f88\u597d\u7684\u4f8b\u5b50\uff09\uff0c\u5e76\u4e14\u7279\u5b9a\u89e3\u6790\u5668\u7684\u4f4d\u7f6e\u4e0d\u518d\u662f\u5ba2\u6237\u7aef\u4f4d\u7f6e\u7684\u51c6\u786e\u9884\u6d4b\u5668\u3002\u5982\u679c\u5bf9\u5185\u5bb9\u7684\u8bf7\u6c42\u88ab\u8def\u7531\u5230\u6bd4\u9700\u8981\u66f4\u8fdc\u7684\u8fb9\u7f18\u4f4d\u7f6e\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u6b20\u4f73\uff0c\u56e0\u6b64 Google \u63d0\u4ea4\u4e86\u4e00\u4efd DNS \u6269\u5c55\u534f\u8bae\uff0c\u5141\u8bb8 DNS resolver \u4f20\u9012\u7528\u6237\u7684 IP \u5730\u5740\u7ed9 authoritative DNS server\u3002<\/p>\n\n\n\n<p>DNS \u534f\u8bae\u7684 EDNS-Client-Subnet \u6269\u5c55\u901a\u8fc7\u8fd4\u56de\u9644\u52a0\u4fe1\u606f\u4ee5\u54cd\u5e94 DNS \u67e5\u8be2\u6765\u89e3\u51b3\u6b64\u95ee\u9898\u3002\u8be5\u4fe1\u606f\u5141\u8bb8\u5185\u5bb9\u4ea4\u4ed8\u7f51\u7edc\u505a\u51fa\u66f4\u597d\u7684\u51b3\u7b56\u3002\u6b64\u6269\u5c55\u662f\u4f5c\u4e3a Faster Internet \u9879\u76ee\u7684\u4e00\u90e8\u5206\u5f00\u53d1\u7684\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h3-u667Au80FDu89E3u6790u5B9Eu73B0u539Fu7406\">\u667a\u80fd\u89e3\u6790\u5b9e\u73b0\u539f\u7406<\/h3>\n\n\n\n<p>\u4e91\u89e3\u6790\u662f\u901a\u8fc7\u8bc6\u522b<code>LOCALDNS<\/code>\u7684\u51fa\u53e3 IP\uff0c\u6765\u5224\u65ad\u8bbf\u95ee\u8005\u6765\u6e90<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5ba2\u6237\u7aef<code>LOCALDNS<\/code>\u652f\u6301<code>&nbsp;EDNS<\/code><br>\u56e0\u4e3a\u4e91\u89e3\u6790 DNS \u652f\u6301 edns-client-subnet \uff0c\u6240\u4ee5\u5728\u83b7\u53d6\u8bbf\u95ee\u8005\u6765\u6e90 IP \u65f6\uff0c\u4f18\u5148\u83b7\u53d6 edns-client-subnet \u6269\u5c55\u91cc\u643a\u5e26\u7684 IP \uff0c\u5982\u679c edns-client-subnet \u6269\u5c55\u91cc\u5b58\u5728 IP\uff0c\u4e91\u89e3\u6790 DNS \u4f1a\u4ee5\u8be5 IP \u6765\u5224\u65ad\u8bbf\u95ee\u8005\u7684\u5730\u7406\u4f4d\u7f6e \uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5219\u4ee5 LocalDNS \u51fa\u53e3 IP \u6765\u5224\u65ad\u8bbf\u95ee\u8005\u7684\u5730\u7406\u4f4d\u7f6e\u3002<\/li>\n\n\n\n<li>\u5ba2\u6237\u7aef<code>LocalDNS<\/code>\u4e0d\u652f\u6301<code>EDNS<\/code><br>LocalDNS \u4f1a\u8fed\u4ee3\u8bf7\u6c42\u81f3\u4e91\u89e3\u6790 DNS\uff0c\u4e91\u89e3\u6790 DNS \u6839\u636e\u8bbf\u95ee\u8005 LocalDNS \u51fa\u53e3 IP \u6765\u5224\u65ad\u8bbf\u95ee\u8005\u7684\u5730\u5740\u4f4d\u7f6e\uff0c\u5b9e\u73b0\u667a\u80fd\u89e3\u6790<\/li>\n\n\n\n<li>\u5ba2\u6237\u7aef<code>LocalDNS<\/code>\u53d8\u76f8\u652f\u6301<code>EDNS<\/code><br>\u7528\u6237\u53d1\u8d77 DNS \u8bf7\u6c42\uff0c\u9012\u5f52\u5230 LocalDNS\uff0c\u5219 LocalDNS \u5c06\u672c\u6b21\u8bf7\u6c42\u53d1\u9001\u5230\u4e8c\u7ea7\u8282\u70b9\uff0c\u901a\u8fc7\u4e8c\u7ea7\u8282\u70b9\u5411\u4e91\u89e3\u6790 DNS \u53d1\u8d77\u8bf7\u6c42\uff0c\u6b64\u65f6\u4e91\u89e3\u6790DNS\u4f1a\u6839\u636e LocalDNS\u4e8c \u7ea7\u8282\u70b9\u7684\u5730\u57df\u4f4d\u7f6e\u8fd4\u56de\u5177\u4f53\u7684\u7ec6\u5206\u7ebf\u8def\u89e3\u6790\u7ed3\u679c<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h3-u67E5u770Bdnsu662Fu5426u652Fu6301ecs\"><a><\/a>\u67e5\u770bDNS\u662f\u5426\u652f\u6301 ECS<\/h3>\n\n\n\n<p>\u4f7f\u7528<code>o.myaddr.l.google.com<\/code>TXT\u8bb0\u5f55\u96c6\uff0c\u628a<code>Resolver-IP<\/code>\u66ff\u6362\u4e3a\u4f60\u67e5\u8be2\u7684 LocalDNS IP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig +nocl TXT o-o.myaddr.l.google.com @Resolver-IP +short<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u4e0d\u652f\u6301 EDNS \u5ba2\u6237\u7aef\u5b50\u7f51\u6269\u5c55\uff0c\u5219\u8f93\u51fa\u5c06\u4e0e\u4ee5\u4e0b\u7c7b\u4f3c<\/li>\n\n\n\n<li>\u56fd\u5185\u5916\u7684\u673a\u5668\u6267\u884c\u53ef\u80fd\u4f1a\u6709<code>\u4e0d\u4e00\u6837<\/code>\u7684\u7ed3\u679c,\u53ef\u80fd\u5047(\u6709\u4e9b<code>DNS<\/code>\u56fd\u5185\u4e0d\u652f\u6301<code>EDNS<\/code>)<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>[root@wiki-doc \/]# dig +nocl TXT o-o.myaddr.l.google.com @223.5.5.5 +short\/\/\u56fd\u5185<\/code>\n<code>\"219.128.79.148\"<\/code>\n<code>[root@7qrdsfdses0 \/]# dig +nocl TXT o-o.myaddr.l.google.com @223.5.5.5 +short\/\/\u5883\u5916<\/code>\n<code>\"47.242.82.131\"\"edns0-client-subnet 5.181.224.0\/25\"<\/code><\/pre>\n\n\n\n<p>\u5728\u6b64\u4f8b\u4e2d\uff0c\u8f93\u51fa\u8868\u660e IP \u5730\u5740\u4e3a<code>47.242.82.131<\/code>\u7684\u89e3\u6790\u7a0b\u5e8f\u652f\u6301<code>EDNS<\/code>\u5ba2\u6237\u7aef\u5b50\u7f51\u6269\u5c55\u3002\u5ba2\u6237\u7aef\u5b50\u7f51<code>5.181.224.025<\/code>\u4fe1\u606f\u5c06\u88ab\u53d1\u9001\u5230\u6743\u5a01\u540d\u79f0\u670d\u52a1\u5668\uff0c\u6743\u5a01DNS\u901a\u8fc7\u5ba2\u6237\u7aef\u5b50\u7f51\u5224\u65ad\u8bf7\u6c42\u8005\u7684\u5730\u7406\u4f4d\u7f6e\uff0c\u8fdb\u800c\u5e94\u7b54\u7cbe\u786e\u7684\u5730\u7406 IP<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h3-dnsu8BF7u6C42u4F20u9012u5BA2u6237u7AEFu5B50u7F51\"><a><\/a>DNS\u8bf7\u6c42\u4f20\u9012\u5ba2\u6237\u7aef\u5b50\u7f51<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f<code>DIG9.9.3<\/code>\u6216\u66f4\u9ad8\u7248\u672c\uff0c\u5219\u8fd8\u53ef\u4ee5\u4f7f\u7528<code>dig<\/code>\u547d\u4ee4\u4f20\u9012\u5ba2\u6237\u7aef\u5b50\u7f51<\/li>\n\n\n\n<li>\u7b2c\u4e00\u884c\u8868\u793a<code>DN<\/code>\u89e3\u6790\u7a0b\u5e8f\u7684<code>IP\u5730\u5740<\/code>\u3002\u7b2c\u4e8c\u884c\u63d0\u4f9b\u4e86<code>edns0-client-subnet<\/code>\uff0c\u8be5\u503c\u5df2\u4f20\u9012\u7ed9\u6743\u5a01\u540d\u79f0\u670d\u52a1\u5668<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>[root@7qrdsfdses0 \/]# dig +nocl TXT o-o.myaddr.l.google.com @8.8.8.8 +subnet=1.1.1.0\/24 +short<\/code><code>\"172.253.5.4\"<\/code><code>\"edns0-client-subnet 1.1.1.0\/24\"<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4ecb\u7ecd \u4f20\u7edfDNS\u89e3\u6790\uff0c\u4e0d\u5224\u65ad\u8bbf\u95ee\u8005\u6765\u6e90\uff0c\u4f1a\u968f\u673a\u9009\u62e9 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":362,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/posts\/1212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1212"}],"version-history":[{"count":3,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/posts\/1212\/revisions"}],"predecessor-version":[{"id":1259,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/posts\/1212\/revisions\/1259"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=\/wp\/v2\/media\/362"}],"wp:attachment":[{"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1212"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.dingjunkj.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}