{"id":209763,"date":"2025-10-23T22:21:50","date_gmt":"2025-10-23T14:21:50","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209763\/"},"modified":"2025-10-23T22:21:51","modified_gmt":"2025-10-23T14:21:51","slug":"cdn-122","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209763\/","title":{"rendered":"CDN\u5b89\u5168\u52a0\u56fa\u6700\u4f73\u5b9e\u8df5\uff1a7\u6b65\u6253\u9020\u9ad8\u53ef\u7528\u3001\u53ef\u63a7\u7684\u8fb9\u7f18\u9632\u62a4"},"content":{"rendered":"<p>\u968f\u7740\u7f51\u7ad9\u8bbf\u95ee\u91cf\u548c\u5206\u5e03\u5f0f\u653b\u51fb\u7684\u4e0d\u65ad\u589e\u957f\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5df2\u7ecf\u4ece\u5355\u7eaf\u7684\u6027\u80fd\u4f18\u5316\u5de5\u5177\u8f6c\u53d8\u4e3a\u5173\u952e\u7684\u8fb9\u7f18\u9632\u62a4\u5c42\u3002\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\u5728\u90e8\u7f72 CDN \u65f6\uff0c\u9664\u4e86\u5173\u6ce8\u7f13\u5b58\u547d\u4e2d\u7387\u4e0e\u52a0\u901f\u6548\u679c\uff0c\u8fd8\u5fc5\u987b\u5bf9\u8fb9\u7f18\u5b89\u5168\u505a\u7cfb\u7edf\u5316\u52a0\u56fa\u3002\u672c\u6587\u56f4\u7ed5\u4e03\u4e2a\u5b9e\u52a1\u6b65\u9aa4\uff0c\u7ed3\u5408\u539f\u7406\u4e0e\u5e94\u7528\u573a\u666f\uff0c\u5e2e\u52a9\u4f60\u6253\u9020\u201c\u9ad8\u53ef\u7528\u3001\u53ef\u63a7\u201d\u7684\u8fb9\u7f18\u9632\u62a4\u4f53\u7cfb\u3002<\/p>\n<h2>\u5f15\u8a00\uff1a\u4e3a\u4ec0\u4e48\u8981\u52a0\u5f3a CDN \u8fb9\u7f18\u5b89\u5168\uff1f<\/h2>\n<p>CDN \u5c06\u6d41\u91cf\u5206\u6563\u5230\u5168\u7403\u8282\u70b9\uff0c\u867d\u7136\u80fd\u63d0\u5347\u53ef\u7528\u6027\u4e0e\u54cd\u5e94\u901f\u5ea6\uff0c\u4f46\u4e5f\u628a\u653b\u51fb\u9762\u6269\u5c55\u5230\u4e86\u66f4\u591a\u8fb9\u7f18\u70b9\u3002\u5e38\u89c1\u98ce\u9669\u5305\u62ec DDoS\u3001\u7f13\u5b58\u6295\u6bd2\u3001\u673a\u5668\u4eba\u5237\u6d41\u91cf\u3001\u654f\u611f\u8d44\u6e90\u975e\u6388\u6743\u8bbf\u95ee\u548c\u4f2a\u9020\u8bf7\u6c42\u7b49\u3002\u5bf9\u6bd4\u5355\u673a\u6216\u5355\u70b9\u673a\u623f\uff0c\u5408\u7406\u7684\u8fb9\u7f18\u5b89\u5168\u7b56\u7565\u53ef\u5e26\u6765\u66f4\u597d\u7684\u53ef\u6269\u5c55\u6027\u4e0e\u66f4\u4f4e\u7684\u6e90\u7ad9\u538b\u529b\uff0c\u4ece\u800c\u964d\u4f4e\u4e1a\u52a1\u4e2d\u65ad\u4e0e\u6570\u636e\u6cc4\u9732\u98ce\u9669\u3002<\/p>\n<h2>\u539f\u7406\u4e0e\u5a01\u80c1\u6a21\u578b<\/h2>\n<p>\u5728\u5236\u5b9a\u52a0\u56fa\u7b56\u7565\u524d\uff0c\u5148\u7406\u89e3 CDN \u7684\u5173\u952e\u539f\u7406\uff1a\u7f13\u5b58\u5c42\uff08\u8fb9\u7f18\u8282\u70b9\uff09\u8d1f\u8d23\u9759\u6001\u8d44\u6e90\u4e0e\u90e8\u5206\u52a8\u6001\u5185\u5bb9\u7684\u5206\u53d1\uff1b\u63a7\u5236\u5e73\u9762\u8d1f\u8d23\u8def\u7531\u7b56\u7565\u4e0e\u8bc1\u4e66\u7ba1\u7406\uff1b\u63a7\u5236\u4e0e\u6570\u636e\u5e73\u9762\u4e4b\u95f4\u901a\u8fc7 API\/\u7ba1\u7406\u63a5\u53e3\u4ea4\u4e92\u3002\u57fa\u4e8e\u6b64\uff0c\u6211\u4eec\u8981\u9632\u62a4\u7684\u8981\u70b9\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u8fb9\u7f18\u5165\u7ad9\u6d41\u91cf\u7684\u9a8c\u8bc1\u4e0e\u8fc7\u6ee4\uff08\u9632\u6b62\u6076\u610f\u8bf7\u6c42\u5230\u8fbe\u6e90\u7ad9\uff09<\/li>\n<li>\u7f13\u5b58\u4e00\u81f4\u6027\u4e0e\u7f13\u5b58\u5185\u5bb9\u7684\u5b8c\u6574\u6027\uff08\u9632\u6b62\u7f13\u5b58\u6295\u6bd2\uff09<\/li>\n<li>\u7ba1\u7406\u63a5\u53e3\u4e0e\u8bc1\u4e66\u7684\u5b89\u5168\uff08\u9632\u6b62\u914d\u7f6e\u88ab\u7be1\u6539\uff09<\/li>\n<li>\u6e90\u7ad9\u8bbf\u95ee\u63a7\u5236\u4e0e\u56de\u6e90\u94fe\u8def\u5b89\u5168\uff08\u4fdd\u8bc1\u56de\u6e90\u4ec5\u88ab CDN \u8282\u70b9\u8bbf\u95ee\uff09<\/li>\n<\/ul>\n<h2>7 \u6b65\u6253\u9020\u9ad8\u53ef\u7528\u3001\u53ef\u63a7\u7684\u8fb9\u7f18\u9632\u62a4<\/h2>\n<h3>\u6b65\u9aa4\u4e00\uff1a\u7edf\u4e00 TLS\/HTTPS \u7b56\u7565\u4e0e\u8bc1\u4e66\u7ba1\u7406<\/h3>\n<p><strong>\u4fdd\u8bc1\u7aef\u5230\u7aef\u52a0\u5bc6<\/strong>\u662f\u57fa\u7840\u3002\u5efa\u8bae\u5728\u8fb9\u7f18\u542f\u7528 HTTPS\uff0c\u540c\u65f6\u4e0e\u6e90\u7ad9\u5efa\u7acb TLS \u56de\u6e90\u8fde\u63a5\u3002\u8bc1\u4e66\u7ba1\u7406\u5e94\u4f7f\u7528\u81ea\u52a8\u5316\u5de5\u5177\uff08\u5982 ACME\uff09\u6216 CDN \u7684\u6258\u7ba1\u8bc1\u4e66\u529f\u80fd\uff0c\u5b9a\u671f\u8f6e\u6362\u5bc6\u94a5\u3002\u6ce8\u610f\uff1a\u914d\u7f6e HSTS\uff08\u542b preload\uff09\u4e0e\u5b8c\u5584\u7684 TLS \u914d\u7f6e\uff08\u7981\u7528 SSLv3\u3001\u542f\u7528 TLS1.2+\/\u5f3a\u5bc6\u7801\u5957\u4ef6\uff09\u53ef\u4ee5\u51cf\u8f7b\u4e2d\u95f4\u4eba\u653b\u51fb\u548c\u534f\u8bae\u56de\u9000\u98ce\u9669\u3002<\/p>\n<h3>\u6b65\u9aa4\u4e8c\uff1a\u4e25\u683c\u56de\u6e90\u767d\u540d\u5355\u4e0e\u8bbf\u95ee\u63a7\u5236<\/h3>\n<p>\u5c06\u6e90\u7ad9\u8bbe\u7f6e\u4e3a\u53ea\u63a5\u53d7\u6765\u81ea CDN \u8282\u70b9\u7684\u56de\u6e90\u8bf7\u6c42\uff0c\u5e38\u89c1\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u901a\u8fc7 CDN \u7684\u56de\u6e90 IP \u5217\u8868\u5728\u9632\u706b\u5899\u4e0a\u8bbe\u5b9a\u767d\u540d\u5355\u3002<\/li>\n<li>\u4f7f\u7528\u6e90\u7ad9\u7b7e\u540d\uff08Origin Signature\uff09\u6216\u56de\u6e90\u5bc6\u94a5\uff0c\u5728 HTTP \u5934\u6216 query \u53c2\u6570\u4e2d\u9a8c\u8bc1\u8bf7\u6c42\u5408\u6cd5\u6027\u3002<\/li>\n<li>\u5f00\u542f\u6e90\u7ad9\u901f\u7387\u9650\u5236\uff0c\u914d\u5408 CDN \u7684\u7f13\u5b58\u7b56\u7565\u907f\u514d\u6e90\u7ad9\u66b4\u9732\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa4\u4e09\uff1a\u8fb9\u7f18 WAF\uff08Web Application Firewall\uff09\u4e0e\u884c\u4e3a\u5206\u6790<\/h3>\n<p>\u5728 CDN \u5c42\u90e8\u7f72 WAF\uff0c\u53ef\u4ee5\u5728\u6700\u63a5\u8fd1\u653b\u51fb\u6765\u6e90\u5904\u62e6\u622a\u5e38\u89c1\u7684 Web \u653b\u51fb\uff08SQL \u6ce8\u5165\u3001XSS\u3001\u6587\u4ef6\u5305\u542b\u7b49\uff09\u3002\u7406\u60f3\u65b9\u6848\u662f\u7ed3\u5408\u7b7e\u540d\u89c4\u5219\u4e0e\u884c\u4e3a\u5206\u6790\/\u673a\u5668\u5b66\u4e60\u6a21\u578b\uff0c\u80fd\u591f\u8bc6\u522b\u5f02\u5e38\u6d41\u91cf\u6a21\u5f0f\u3001\u722c\u866b\u548c\u8d26\u53f7\u731c\u6d4b\u653b\u51fb\u3002\u5bf9\u654f\u611f API \u91c7\u7528\u4e25\u683c\u7684\u89c4\u5219\u4e0e\u52a8\u6001\u89c4\u5219\uff08Rate-based\u3001Geo-blocking\uff09\u3002<\/p>\n<h3>\u6b65\u9aa4\u56db\uff1aDDoS \u7f13\u89e3\u4e0e\u5206\u7ea7\u9650\u6d41<\/h3>\n<p>\u5229\u7528 CDN \u7684\u5168\u7f51\u5e26\u5bbd\u505a\u7b2c\u4e00\u9053 DDoS \u9632\u62a4\uff0c\u540c\u65f6\u914d\u5408\u5206\u7ea7\u9650\u6d41\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u57fa\u4e8e IP\u3001ASN\u3001\u56fd\u5bb6\/\u5730\u533a\u8fdb\u884c\u7c97\u7c92\u5ea6\u5c01\u5835\u3002<\/li>\n<li>\u5bf9\u7279\u5b9a\u8def\u5f84\u6216 API \u5e94\u7528\u7ec6\u7c92\u5ea6\u9650\u6d41\uff08token bucket\u3001\u6f0f\u6876\u7b97\u6cd5\uff09\uff0c\u4fdd\u62a4\u4e0b\u6e38\u670d\u52a1\u3002<\/li>\n<li>\u5728\u53d1\u751f\u7a81\u53d1\u6d41\u91cf\u65f6\u542f\u7528\u6311\u6218\uff08\u5982 CAPTCHA \/ JS challenge\uff09\u4ee5\u9274\u522b\u771f\u5b9e\u7528\u6237\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa4\u4e94\uff1a\u7f13\u5b58\u4e0e\u5185\u5bb9\u5b8c\u6574\u6027\u7b56\u7565<\/h3>\n<p>\u7f13\u5b58\u6295\u6bd2\u662f\u8fb9\u7f18\u5c42\u5e38\u89c1\u98ce\u9669\u3002\u63a8\u8350\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li>\u5bf9\u52a8\u6001\u5185\u5bb9\u4f7f\u7528 cache-control\u3001Vary\u3001Etag \u7b49\u5934\u6b63\u786e\u63a7\u5236\u7f13\u5b58\u8bed\u4e49\u3002<\/li>\n<li>\u5bf9\u654f\u611f\u6216\u9700\u8ba4\u8bc1\u7684\u8d44\u6e90\u8bbe\u7f6e No-cache\/Private\u3002<\/li>\n<li>\u5f00\u542f\u8fb9\u7f18\u5185\u5bb9\u5b8c\u6574\u6027\u9a8c\u8bc1\uff08\u5982 SRI \u6216\u57fa\u4e8e\u54c8\u5e0c\u7684\u7f13\u5b58\u9a8c\u8bc1\uff09\uff0c\u5e76\u5bf9\u7f13\u5b58\u66f4\u65b0\u4f7f\u7528\u5b89\u5168\u7684\u65e0\u72b6\u6001\u56de\u6e90\u6821\u9a8c\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa4\u516d\uff1a\u65e5\u5fd7\u3001\u76d1\u63a7\u4e0e\u53ef\u89c2\u6d4b\u6027<\/h3>\n<p>\u5168\u9762\u7684\u53ef\u89c2\u6d4b\u6027\u662f\u5feb\u901f\u54cd\u5e94\u7684\u524d\u63d0\u3002\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u6536\u96c6\u8fb9\u7f18\u8bbf\u95ee\u65e5\u5fd7\uff08\u542b x-forwarded-for\u3001\u771f\u5b9e\u5ba2\u6237\u7aef IP\u3001\u8fb9\u7f18\u8282\u70b9 ID\uff09\u5e76\u9001\u5165 SIEM \u6216\u65e5\u5fd7\u5206\u6790\u5e73\u53f0\u3002<\/li>\n<li>\u5efa\u7acb\u5f02\u5e38\u6d41\u91cf\u544a\u8b66\uff08\u6bd4\u5bf9\u5386\u53f2\u57fa\u7ebf\uff09\u3001\u9519\u8bef\u7387\u4e0e\u56de\u6e90\u54cd\u5e94\u65f6\u5ef6\u544a\u8b66\u3002<\/li>\n<li>\u5b9a\u671f\u8fdb\u884c\u6d41\u91cf\u53d6\u6837\u4e0e\u56de\u653e\uff0c\u4ee5\u9a8c\u8bc1\u9632\u62a4\u89c4\u5219\u7684\u6709\u6548\u6027\u4e0e\u8bef\u6740\u7387\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa4\u4e03\uff1a\u6700\u5c0f\u6743\u9650\u7684\u7ba1\u7406\u4e0e\u81ea\u52a8\u5316\u8fd0\u7ef4<\/h3>\n<p>\u63a7\u5236\u9762\u5b89\u5168\u540c\u6837\u91cd\u8981\u3002\u5b9e\u8df5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5bf9 CDN \u7ba1\u7406\u5e10\u6237\u542f\u7528\u591a\u56e0\u7d20\u8ba4\u8bc1\uff08MFA\uff09\u4e0e\u57fa\u4e8e\u89d2\u8272\u7684\u8bbf\u95ee\u63a7\u5236\uff08RBAC\uff09\u3002<\/li>\n<li>API Key \u4e0e\u7ba1\u7406\u51ed\u8bc1\u91c7\u7528\u77ed\u671f\u51ed\u8bc1\u4e0e\u81ea\u52a8\u8f6e\u6362\u3002<\/li>\n<li>\u901a\u8fc7\u57fa\u7840\u8bbe\u65bd\u5373\u4ee3\u7801\uff08IaC\uff09\u7ba1\u7406 CDN \u914d\u7f6e\uff0c\u7ed3\u5408 CI\/CD \u505a\u53d8\u66f4\u5ba1\u8ba1\uff0c\u907f\u514d\u624b\u5de5\u914d\u7f6e\u9519\u8bef\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u6848\u4f8b\u8981\u70b9<\/h2>\n<p>\u4e0d\u540c\u4e1a\u52a1\u7c7b\u578b\u5bf9 CDN \u8fb9\u7f18\u5b89\u5168\u7684\u4fa7\u91cd\u70b9\u4e0d\u540c\uff1a<\/p>\n<ul>\n<li>\u5185\u5bb9\u7c7b\u7f51\u7ad9\uff08\u9759\u6001\u8d44\u6e90\u5927\u3001\u5168\u7403\u5206\u53d1\uff09\uff1a\u91cd\u89c6\u7f13\u5b58\u7b56\u7565\u3001\u7f13\u5b58\u4e00\u81f4\u6027\u4e0e\u7f13\u5b58\u5b89\u5168\uff1b\u53ef\u5728\u8fb9\u7f18\u542f\u7528\u5bf9\u8c61\u7ea7\u7b7e\u540d\u3002<\/li>\n<li>\u7535\u5546\u4e0e\u767b\u5f55\u4e1a\u52a1\uff1a\u4f18\u5148\u4fdd\u969c\u8ba4\u8bc1\u4e0e\u4f1a\u8bdd\u5b89\u5168\uff0cWAF 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\u8fb9\u7f18\u9632\u62a4<\/h2>\n<p>\u4e0e\u4f20\u7edf\u53cd\u5411\u4ee3\u7406\u76f8\u6bd4\uff0cCDN \u63d0\u4f9b\u7684\u8fb9\u7f18\u9632\u62a4\u5177\u5907\u4ee5\u4e0b\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li><strong>\u5730\u7406\u5206\u6563\u5316\u7684\u6297 DDoS 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