{"id":209743,"date":"2025-10-23T21:42:55","date_gmt":"2025-10-23T13:42:55","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209743\/"},"modified":"2025-10-23T21:42:56","modified_gmt":"2025-10-23T13:42:56","slug":"cdn-dns","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209743\/","title":{"rendered":"CDN\u9632\u6b62DNS\u52ab\u6301\uff1a\u5173\u952e\u7b56\u7565\u4e0e\u90e8\u7f72\u6307\u5357"},"content":{"rendered":"<p>\u5728\u4e92\u8054\u7f51\u57fa\u7840\u8bbe\u65bd\u65e5\u76ca\u590d\u6742\u7684\u4eca\u5929\uff0cDNS\u52ab\u6301\u5bf9\u7f51\u7ad9\u53ef\u7528\u6027\u548c\u5b89\u5168\u6027\u7684\u5a01\u80c1\u6108\u53d1\u7a81\u51fa\u3002\u5bf9\u4e8e\u4f9d\u8d56\u6d77\u5916\u6d41\u91cf\u548c\u591a\u5730\u57df\u90e8\u7f72\u7684\u7ad9\u957f\u3001\u4f01\u4e1a\u4e0e\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u4f7f\u7528CDN\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u5347\u6027\u80fd\u548c\u6297DDoS\u80fd\u529b\uff0c\u8fd8\u80fd\u6210\u4e3a\u9632\u6b62DNS\u52ab\u6301\u7684\u91cd\u8981\u4e00\u73af\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5b9e\u8df5\u90e8\u7f72\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\u56db\u4e2a\u65b9\u9762\uff0c\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u501f\u52a9CDN\u6784\u5efa\u7a33\u5065\u7684\u6297\u52ab\u6301\u65b9\u6848\uff0c\u5e76\u63d0\u4f9b\u53ef\u64cd\u4f5c\u7684\u5b9e\u65bd\u6b65\u9aa4\u4e0e\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<h2>DNS\u52ab\u6301\u7684\u57fa\u672c\u539f\u7406\u4e0e\u5e38\u89c1\u7c7b\u578b<\/h2>\n<p>DNS\u52ab\u6301\u901a\u5e38\u6307\u653b\u51fb\u8005\u6216\u4e2d\u95f4\u4eba\u7be1\u6539\u57df\u540d\u89e3\u6790\u7ed3\u679c\uff0c\u4f7f\u7528\u6237\u8bbf\u95ee\u5230\u653b\u51fb\u8005\u63a7\u5236\u7684\u5730\u5740\u3002\u5e38\u89c1\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u672c\u5730\u4e3b\u673a\u6216\u8def\u7531\u5668\u88ab\u7be1\u6539\uff0c\u4fee\u6539hosts\u6216DNS\u8bbe\u7f6e\u3002<\/li>\n<li>\u6076\u610f\u6216\u88ab\u63a7\u5236\u7684DNS\u89e3\u6790\u5668\u8fd4\u56de\u4f2a\u9020\u8bb0\u5f55\uff08\u9012\u5f52\u89e3\u6790\u5668\u52ab\u6301\uff09\u3002<\/li>\n<li>\u57df\u540d\u6ce8\u518c\u5546\u8d26\u53f7\u88ab\u5165\u4fb5\uff0c\u5bfc\u81f4\u57df\u540d\u88ab\u8f6c\u79fb\u6216\u4fee\u6539NS\u8bb0\u5f55\uff08\u6ce8\u518c\u5546\u5c42\u9762\u52ab\u6301\uff09\u3002<\/li>\n<li>\u4e2d\u95f4\u94fe\u8def\u7684DNS\u54cd\u5e94\u88ab\u7be1\u6539\u6216\u66ff\u6362\uff08\u4e2d\u95f4\u4eba\u653b\u51fb\uff09\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u653b\u51fb\u4f1a\u5bfc\u81f4\u6d41\u91cf\u88ab\u7a83\u542c\u3001\u9493\u9c7c\u7ad9\u70b9\u66ff\u6362\u6216\u670d\u52a1\u4e2d\u65ad\u3002\u7406\u89e3\u5177\u4f53\u653b\u51fb\u9762\u6709\u52a9\u4e8e\u8bbe\u8ba1\u9488\u5bf9\u6027\u7684\u9632\u62a4\u63aa\u65bd\u3002<\/p>\n<h2>CDN\u5728\u9632\u6b62DNS\u52ab\u6301\u4e2d\u7684\u4f5c\u7528\u4e0e\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>CDN\u901a\u8fc7\u5c06\u6d41\u91cf\u5f15\u5bfc\u5230\u8fb9\u7f18\u8282\u70b9\uff0c\u5e76\u7ed3\u5408Anycast\u8def\u7531\u3001TLS\u4e0e\u5168\u7403\u5206\u5e03\u5f0f\u57fa\u7840\u8bbe\u65bd\uff0c\u80fd\u591f\u964d\u4f4eDNS\u52ab\u6301\u6210\u529f\u7387\u3002\u4e3b\u8981\u673a\u5236\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u8fb9\u7f18\u4ee3\u7406\u4e0eCNAME\u6307\u5411<\/strong>\uff1a\u5c06\u57df\u540d\u7684\u6d41\u91cf\u901a\u8fc7CNAME\u6216\u57df\u540d\u6258\u7ba1\u4ea4\u7ed9CDN\uff0cCDN\u7ba1\u7406\u8fb9\u7f18\u89e3\u6790\u4e0e\u6d41\u91cf\u5206\u53d1\uff0c\u53ef\u4ee5\u5728\u6743\u5a01DNS\u89e3\u6790\u6216\u8fb9\u7f18\u5c42\u505a\u989d\u5916\u6821\u9a8c\u3002<\/li>\n<li><strong>Anycast\u4e0e\u5168\u7403Anycast NS<\/strong>\uff1aCDN\u8fd0\u8425\u5546\u901a\u5e38\u5728\u591a\u4e2a\u5730\u57df\u90e8\u7f72Anycast DNS\u8282\u70b9\uff08\u5305\u62ec\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\u7b49\u8282\u70b9\uff09\uff0c\u4f7f\u5f97\u4f2a\u9020\u6216\u62e6\u622a\u5355\u70b9\u54cd\u5e94\u53d8\u5f97\u56f0\u96be\u3002<\/li>\n<li><strong>\u6258\u7ba1DNS\u4e0e\u591aNS\u5197\u4f59<\/strong>\uff1aCDN\u5382\u5546\u63d0\u4f9b\u6258\u7ba1DNS\u670d\u52a1\uff0c\u914d\u5408\u591a\u4e2a\u6743\u5a01\u540d\u670d\u52a1\u5668\u548c\u5730\u7406\u5206\u5e03\uff0c\u63d0\u9ad8\u6297\u5355\u70b9\u52ab\u6301\u548c\u7f51\u7edc\u5206\u533a\u80fd\u529b\u3002<\/li>\n<li><strong>TLS\u7ec8\u7aef\u4e0e\u8bc1\u4e66\u7ba1\u7406<\/strong>\uff1a\u5728CDN\u8fb9\u7f18\u7ec8\u6b62TLS\uff0c\u7ed3\u5408\u81ea\u52a8\u8bc1\u4e66\u900f\u660e\u65e5\u5fd7\u548cOCSP\uff0c\u53ef\u4ee5\u68c0\u6d4b\u5f02\u5e38\u8bc1\u4e66\u4e0e\u4f2a\u9020\u7ad9\u70b9\u3002<\/li>\n<li><strong>\u8fb9\u7f18\u7b7e\u540d\u4e0e\u8bbf\u95ee\u63a7\u5236<\/strong>\uff1a\u901a\u8fc7\u7b7e\u540d\u7684URL\u3001signed cookies\u6216WAF\u7b56\u7565\uff0cCDN\u53ef\u963b\u6b62\u672a\u6388\u6743\u6d41\u91cf\uff0c\u5373\u4f7fDNS\u89e3\u6790\u88ab\u7be1\u6539\uff0c\u653b\u51fb\u8005\u96be\u4ee5\u83b7\u5f97\u6709\u6548\u4ee4\u724c\u8bbf\u95ee\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<h3>\u4e0eDNSSEC\u3001DoH\/DoT\u7684\u534f\u540c<\/h3>\n<p>CDN\u5e76\u975e\u66ff\u4ee3DNS\u5b89\u5168\u673a\u5236\uff0c\u800c\u5e94\u4e0e\u4e4b\u914d\u5408\u4f7f\u7528\u3002DNSSEC\u4e3a\u6743\u5a01\u8bb0\u5f55\u63d0\u4f9b\u7b7e\u540d\uff0c\u80fd\u9632\u7be1\u6539\u7684\u56de\u5e94\uff1bDoH\/DoT\u4fdd\u62a4\u9012\u5f52\u89e3\u6790\u5668\u4e0e\u5ba2\u6237\u7aef\u4e4b\u95f4\u7684\u901a\u9053\u3002\u6700\u4f73\u5b9e\u8df5\u662f\uff1a\u5728\u91c7\u7528CDN\u52a0\u901f\u548c\u6258\u7ba1DNS\u7684\u540c\u65f6\uff0c\u4e3a\u57df\u540d\u5f00\u542fDNSSEC\uff0c\u5e76\u9f13\u52b1\u5ba2\u6237\u7aef\u4f7f\u7528DoH\/DoT\u6216\u53ef\u4fe1\u89e3\u6790\u5668\uff0c\u4ece\u800c\u6784\u6210\u591a\u5c42\u9632\u62a4\u3002<\/p>\n<h2>\u5b9e\u9645\u90e8\u7f72\u65b9\u6848\u4e0e\u64cd\u4f5c\u6b65\u9aa4<\/h2>\n<p>\u4ee5\u4e0b\u4e3a\u4e00\u4e2a\u53ef\u590d\u7528\u7684\u9010\u6b65\u90e8\u7f72\u6d41\u7a0b\uff0c\u9762\u5411\u5df2\u7ecf\u4f7f\u7528\u6216\u8ba1\u5212\u4f7f\u7528CDN\u7684\u7ad9\u70b9\uff0c\u9002\u7528\u4e8e\u9999\u6e2f\u3001\u7f8e\u56fd\u6216\u5176\u4ed6\u5730\u533a\u7684\u670d\u52a1\u5668\u73af\u5883\uff08\u5982\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\uff09\u3002<\/p>\n<h3>1. \u9009\u62e9\u5408\u9002\u7684DNS\u4e0eCDN\u7ec4\u5408<\/h3>\n<ul>\n<li>\u4f18\u5148\u9009\u62e9\u63d0\u4f9b\u6743\u5a01DNS\u6258\u7ba1\u4e0eAnycast\u80fd\u529b\u7684CDN\u4f9b\u5e94\u5546\u3002<\/li>\n<li>\u82e5\u4f7f\u7528\u7b2c\u4e09\u65b9DNS\uff0c\u786e\u4fdd\u5176\u652f\u6301DNSSEC\u3001API\u5316\u7ba1\u7406\u4e0e\u591aNS\u5197\u4f59\u3002<\/li>\n<\/ul>\n<h3>2. \u57df\u540d\u4e0e\u6ce8\u518c\u5546\u5b89\u5168<\/h3>\n<ul>\n<li>\u5728\u57df\u540d\u6ce8\u518c\u5546\u5904\u5f00\u542f\u53cc\u56e0\u7d20\u8ba4\u8bc1\uff0c\u9501\u5b9a\u57df\u540d\uff08Registrar Lock\uff09\u3002<\/li>\n<li>\u5b9a\u671f\u68c0\u67e5WHOIS\u4e0eNS\u8bb0\u5f55\uff0c\u5f00\u542f\u57df\u540d\u8f6c\u79fb\u4fdd\u62a4\u3002<\/li>\n<\/ul>\n<h3>3. DNS\u914d\u7f6e\u4e0eDNSSEC<\/h3>\n<ul>\n<li>\u5c06\u57df\u540d\u7684\u6743\u5a01NS\u6307\u5411CDN\u6216\u53ef\u4fe1DNS\u63d0\u4f9b\u5546\uff0c\u914d\u7f6e\u591a\u4e2a\u5730\u7406\u5206\u5e03\u7684NS\u3002<\/li>\n<li>\u5f00\u542f\u5e76\u90e8\u7f72DNSSEC\uff1a\u751f\u6210KSK\/ZSK\uff0c\u53d1\u5e03DS\u8bb0\u5f55\u5230\u6ce8\u518c\u5546\u3002<\/li>\n<\/ul>\n<h3>4. CDN\u914d\u7f6e\u7ec6\u8282<\/h3>\n<ul>\n<li>\u4f7f\u7528CNAME\u6216Alias\u5c06\u4e3b\u7ad9\u70b9\u6d41\u91cf\u5f15\u5bfc\u5230CDN\u8fb9\u7f18\uff0c\u907f\u514d\u5728\u6839\u57df\u76f4\u63a5\u66b4\u9732\u654f\u611f\u8bb0\u5f55\uff08\u82e5\u9700\u8981\u6839\u57df\uff0c\u4f7f\u7528CNAME Flattening\u6216ALIAS\u673a\u5236\uff09\u3002<\/li>\n<li>\u542f\u7528TLS\u5e76\u4f7f\u7528\u81ea\u52a8\u8bc1\u4e66\u7ba1\u7406\uff08Let&#8217;s Encrypt\u6216CA\u6258\u7ba1\uff09\uff0c\u914d\u7f6eHTTP Strict Transport Security (HSTS)\u3002<\/li>\n<li>\u8bbe\u7f6eorigin shielding\u4e0e\u56de\u6e90\u767d\u540d\u5355\uff0c\u786e\u4fdd\u53ea\u6709CDN\u8fb9\u7f18\u80fd\u76f4\u63a5\u8bbf\u95ee\u6e90\u7ad9\uff08\u901a\u8fc7IP\u767d\u540d\u5355\u6216\u81ea\u7b7e\u540d\u8bc1\u4e66\u9a8c\u8bc1\uff09\u3002<\/li>\n<li>\u542f\u7528WAF\u89c4\u5219\u4e0e\u901f\u7387\u9650\u5236\uff0c\u9632\u6b62\u57df\u540d\u88ab\u7528\u4f5cDNS\u96a7\u9053\u6216\u88ab\u6ee5\u7528\u3002<\/li>\n<\/ul>\n<h3>5. 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