{"id":209715,"date":"2025-10-23T21:10:15","date_gmt":"2025-10-23T13:10:15","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209715\/"},"modified":"2025-10-23T21:10:16","modified_gmt":"2025-10-23T13:10:16","slug":"cdn-101","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209715\/","title":{"rendered":"CDN \u52a0\u5bc6\u4f20\u8f93\u5b89\u5168\uff1a\u5b9e\u6218\u7b56\u7565\u4e0e\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u4e0e\u5408\u89c4\u8981\u6c42\u9a71\u52a8\u4e0b\uff0c\u5229\u7528\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u5b9e\u73b0\u52a0\u5bc6\u4f20\u8f93\uff0c\u5df2\u6210\u4e3a\u7ad9\u957f\u3001\u4f01\u4e1a\u4e0e\u5f00\u53d1\u8005\u786e\u4fdd\u6570\u636e\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u673a\u5bc6\u6027\u4e0e\u5b8c\u6574\u6027\u7684\u5173\u952e\u63aa\u65bd\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5b9e\u9645\u90e8\u7f72\u7ec6\u8282\u3001\u5e94\u7528\u573a\u666f\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\u7b49\u89d2\u5ea6\uff0c\u8be6\u7ec6\u89e3\u8bfb\u5982\u4f55\u5728CDN\u5c42\u9762\u6784\u5efa\u5b89\u5168\u7684\u52a0\u5bc6\u4f20\u8f93\u4f53\u7cfb\uff0c\u540c\u65f6\u7ed3\u5408\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u9999\u6e2fVPS\u7b49\u591a\u5730\u90e8\u7f72\u7684\u5b9e\u9645\u8003\u91cf\uff0c\u5e2e\u52a9\u60a8\u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\u843d\u5730\u5b9e\u65bd\u3002<\/p>\n<h2>\u52a0\u5bc6\u4f20\u8f93\u7684\u57fa\u672c\u539f\u7406\u4e0e\u5173\u952e\u6280\u672f\u7ec4\u4ef6<\/h2>\n<p>CDN \u7684\u52a0\u5bc6\u4f20\u8f93\u4e3b\u8981\u4f9d\u8d56\u4e8e TLS\uff08\u4f20\u8f93\u5c42\u5b89\u5168\u6027\uff09\uff0c\u5176\u76ee\u7684\u662f\u5728\u5ba2\u6237\u7aef\u4e0e\u8fb9\u7f18\u8282\u70b9\u3001\u4ee5\u53ca\u8fb9\u7f18\u8282\u70b9\u4e0e\u6e90\u7ad9\u4e4b\u95f4\u5efa\u7acb\u52a0\u5bc6\u901a\u9053\u3002\u5173\u952e\u6280\u672f\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>TLS \u534f\u8bae\u7248\u672c\uff1a<\/strong>\u5efa\u8bae\u4f18\u5148\u542f\u7528 TLS 1.3\uff08\u66f4\u4f4e\u5ef6\u8fdf\u3001\u66f4\u5b89\u5168\u7684\u63e1\u624b\u4e0e\u66f4\u597d\u7684\u524d\u5411\u4fdd\u5bc6\uff09\uff0c\u5e76\u4fdd\u7559 TLS 1.2 \u4ee5\u517c\u5bb9\u8001\u65e7\u5ba2\u6237\u7aef\u3002<\/li>\n<li><strong>\u5bc6\u94a5\u4ea4\u6362\u4e0e\u52a0\u5bc6\u5957\u4ef6\uff1a<\/strong>\u4f18\u5148\u4f7f\u7528 ECDHE \u7cfb\u5217\u5b9e\u73b0\u524d\u5411\u4fdd\u5bc6\uff08PFS\uff09\uff0c\u9009\u62e9 AEAD \u5957\u4ef6\uff08\u5982 TLS_AES_128_GCM_SHA256\uff09\u4ee5\u9632\u6b62\u660e\u6587\u56de\u653e\u4e0e\u622a\u53d6\u3002<\/li>\n<li><strong>\u8bc1\u4e66\u7ba1\u7406\uff1a<\/strong>\u652f\u6301 SAN\uff08Subject Alternative Name\uff09\u6216\u901a\u914d\u7b26\u8bc1\u4e66\u4ee5\u8986\u76d6\u591a\u4e2a\u5b50\u57df\u540d\uff0c\u63a8\u8350\u4f7f\u7528\u81ea\u52a8\u5316\u8bc1\u4e66\u9881\u53d1\uff08ACME\uff09\u4e0e\u5b9a\u671f\u8f6e\u6362\u7b56\u7565\u3002<\/li>\n<li><strong>OCSP Stapling \u4e0e\u8bc1\u4e66\u900f\u660e\u5ea6\uff08CT\uff09\uff1a<\/strong>\u964d\u4f4e\u5ba2\u6237\u7aef\u9a8c\u8bc1\u5ef6\u8fdf\u5e76\u9632\u8303\u4f2a\u9020\u8bc1\u4e66\u3002<\/li>\n<li><strong>SNI\uff08Server Name Indication\uff09\uff1a<\/strong>\u4fdd\u8bc1\u591a\u4e2a\u57df\u540d\u53ef\u4ee5\u5728\u540c\u4e00 IP \u4e0a\u5b89\u5168\u6258\u7ba1\u4e0e\u8def\u7531\u3002<\/li>\n<li><strong>HTTP\/2 \u4e0e HTTP\/3\uff08QUIC\uff09\uff1a<\/strong>\u5728 TLS \u57fa\u7840\u4e0a\u63d0\u9ad8\u4f20\u8f93\u6548\u7387\uff0cHTTP\/3 \u5728\u79fb\u52a8\u4e0e\u9ad8\u4e22\u5305\u7f51\u7edc\u8868\u73b0\u5c24\u5176\u4f18\u8d8a\u3002<\/li>\n<\/ul>\n<h3>\u8fb9\u7f18\u7ec8\u7aef\uff08Edge Termination\uff09\u4e0e\u6e90\u7ad9\u52a0\u5bc6\uff08Origin Pull\uff09<\/h3>\n<p>\u5728 CDN \u4e2d\u5e38\u89c1\u7684\u4e24\u79cd TLS \u6a21\u5f0f\u662f\uff1a<\/p>\n<ul>\n<li>\u8fb9\u7f18\u7ec8\u7aef\uff1aTLS \u5728 CDN \u8fb9\u7f18\u8282\u70b9\u7ec8\u6b62\uff0c\u8fb9\u7f18\u8282\u70b9\u4e0e\u5ba2\u6237\u7aef\u4e4b\u95f4\u4e3a\u52a0\u5bc6\u901a\u9053\uff1b\u8fb9\u7f18\u5230\u6e90\u7ad9\u53ef\u4ee5\u662f\u660e\u6587\u6216\u52a0\u5bc6\u3002\u4f18\u70b9\u662f offload CPU\uff0c\u964d\u4f4e\u6e90\u7ad9\u8bc1\u4e66\u7ba1\u7406\u538b\u529b\uff1b\u7f3a\u70b9\u662f\u8fb9\u7f18\u8282\u70b9\u53ef\u89c1\u660e\u6587\uff0c\u9700\u4fe1\u4efb CDN \u8fd0\u8425\u65b9\u3002<\/li>\n<li>\u5168\u7a0b\u52a0\u5bc6\uff08End-to-Origin\uff09\uff1a\u8fb9\u7f18\u4e0e\u6e90\u7ad9\u4e4b\u95f4\u4e5f\u4f7f\u7528 TLS\uff08\u901a\u5e38\u79f0\u4e3a\u201cOrigin Pull over HTTPS\u201d\uff09\u3002\u8fd9\u662f\u66f4\u9ad8\u5b89\u5168\u7ea7\u522b\u7684\u505a\u6cd5\uff0c\u9002\u7528\u4e8e\u654f\u611f\u6570\u636e\u3002\u4e3a\u9632\u6b62\u4e2d\u95f4\u4eba\uff0c\u9700\u5728\u6e90\u7ad9\u4fa7\u914d\u7f6e\u4e25\u683c\u7684\u8bc1\u4e66\u6821\u9a8c\u6216\u4f7f\u7528 mTLS\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u90e8\u7f72\u7b56\u7565\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u4e0b\u9762\u5217\u51fa\u5728\u5b9e\u9645\u8fd0\u7ef4\u4e2d\u5e38\u89c1\u4e14\u63a8\u8350\u7684\u5177\u4f53\u7b56\u7565\uff1a<\/p>\n<h3>1. \u5f3a\u5316 TLS \u914d\u7f6e<\/h3>\n<ul>\n<li>\u542f\u7528 TLS 1.3 \u4e0e TLS 1.2\uff0c\u7981\u7528 SSLv3\u3001TLS 1.0\/1.1\u3002<\/li>\n<li>\u914d\u7f6e\u63a8\u8350\u7684\u5f3a\u52a0\u5bc6\u5957\u4ef6\uff0c\u4f18\u5148 ECDHE + AEAD\uff1b\u7981\u7528 RSA \u5bc6\u94a5\u4ea4\u6362\u4ee5\u786e\u4fdd PFS\u3002<\/li>\n<li>\u5f00\u542f OCSP stapling \u5e76\u76d1\u63a7 OCSP \u54cd\u5e94\u6709\u6548\u6027\uff0c\u907f\u514d\u56e0\u540a\u9500\u4fe1\u606f\u7f3a\u5931\u5bfc\u81f4\u7684\u5b89\u5168\u98ce\u9669\u3002<\/li>\n<li>\u5bf9\u8fb9\u7f18\u8282\u70b9\u542f\u7528 HSTS\uff08HTTP Strict Transport Security\uff09\uff0c\u5e76\u614e\u91cd\u90e8\u7f72 preload \u5217\u8868\u3002<\/li>\n<\/ul>\n<h3>2. \u8bc1\u4e66\u4e0e\u5bc6\u94a5\u7ba1\u7406<\/h3>\n<ul>\n<li>\u4f7f\u7528\u81ea\u52a8\u5316\u6d41\u7a0b\uff08ACME\/Let\u2019s Encrypt \u6216\u5546\u4e1a CA\uff09\u5b9e\u73b0\u8bc1\u4e66\u7b7e\u53d1\u4e0e\u7eed\u671f\uff0c\u907f\u514d\u4eba\u5de5\u5931\u8bef\u5bfc\u81f4\u8bc1\u4e66\u8fc7\u671f\u3002<\/li>\n<li>\u9488\u5bf9\u9ad8\u5b89\u5168\u573a\u666f\u4f7f\u7528\u786c\u4ef6\u5b89\u5168\u6a21\u5757\uff08HSM\uff09\u6216\u4e91 KMS \u7ba1\u7406\u79c1\u94a5\uff0c\u9650\u5236\u79c1\u94a5\u5bfc\u51fa\u3002<\/li>\n<li>\u5b9a\u671f\u8f6e\u6362\u5bc6\u94a5\u4e0e\u8bc1\u4e66\uff0c\u5e76\u5efa\u7acb\u4e8b\u6545\u54cd\u5e94\u6d41\u7a0b\u4ee5\u5e94\u5bf9\u5bc6\u94a5\u6cc4\u9732\u3002<\/li>\n<\/ul>\n<h3>3. \u6e90\u7ad9\u5b89\u5168\u7b56\u7565<\/h3>\n<ul>\n<li>\u5f00\u542f Origin Pull \u7684 HTTPS\uff0c\u5e76\u5728 CDN \u4e0e\u6e90\u7ad9\u4e4b\u95f4\u8fdb\u884c\u8bc1\u4e66\u9a8c\u8bc1\uff08\u4f8b\u5982\u4f7f\u7528\u81ea\u7b7e\u8bc1\u4e66\u5e76\u5728 CDN \u4e0a\u914d\u7f6e\u4fe1\u4efb\u6839\u8bc1\u4e66\uff0c\u6216\u91c7\u7528 mTLS\uff09\u3002<\/li>\n<li>\u9650\u5236\u6e90\u7ad9\u4ec5\u63a5\u53d7\u6765\u81ea CDN \u7684 IP \u6216\u901a\u8fc7 HTTP Header\/Token \u505a\u6821\u9a8c\uff0c\u9632\u6b62\u7ed5\u8fc7 CDN \u76f4\u63a5\u653b\u51fb\u6e90\u7ad9\u3002<\/li>\n<li>\u914d\u7f6e Origin Shield \u5c42\uff0c\u964d\u4f4e\u6e90\u7ad9\u8d1f\u8f7d\u5e76\u589e\u5f3a\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<\/ul>\n<h3>4. \u8bbf\u95ee\u63a7\u5236\u4e0e\u7b7e\u540d URL\/Token<\/h3>\n<ul>\n<li>\u5bf9\u79c1\u5bc6\u8d44\u6e90\u4f7f\u7528\u7b7e\u540d URL \u6216\u77ed\u671f Token\uff0c\u907f\u514d\u516c\u5f00\u5316\u7f13\u5b58\u4e2d\u6cc4\u9732\u654f\u611f\u5185\u5bb9\u3002<\/li>\n<li>\u7ed3\u5408\u5730\u7406\u8bbf\u95ee\u63a7\u5236\uff0c\u5728 CDN \u4fa7\u6309\u56fd\u5bb6\/\u5730\u533a\u9650\u5236\u8bbf\u95ee\uff08\u9002\u7528\u4e8e\u5408\u89c4\u6216\u533a\u57df\u5316\u5206\u53d1\uff09\u3002<\/li>\n<\/ul>\n<h3>5. \u5bf9\u6297 DDoS \u4e0e Web \u653b\u51fb<\/h3>\n<ul>\n<li>\u542f\u7528 CDN \u63d0\u4f9b\u7684\u901f\u7387\u9650\u5236\u3001\u8bf7\u6c42\u901f\u7387\u9608\u503c\u4e0e\u884c\u4e3a\u5206\u6790\u3002<\/li>\n<li>\u7ed3\u5408 WAF \u7b56\u7565\uff08\u57fa\u4e8e\u89c4\u5219\u4e0e\u884c\u4e3a\u5b66\u4e60\uff09\u9632\u62a4 SQL \u6ce8\u5165\u3001XSS\u3001sensitive endpoints \u7b49\u3002<\/li>\n<li>\u5728\u5927\u6d41\u91cf\u653b\u51fb\u65f6\u542f\u7528\u6311\u6218\/\u9a8c\u8bc1\uff08\u5982 CAPTCHA\uff09\u4e0e\u6d41\u91cf\u6e05\u6d17\u670d\u52a1\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u5728\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u4e0e\u5730\u7406\u6258\u7ba1\u9009\u62e9\u4e0a\uff0cCDN \u52a0\u5bc6\u4f20\u8f93\u7684\u4f18\u52bf\u8868\u73b0\u5404\u5f02\uff1a<\/p>\n<h3>\u9759\u6001\u5185\u5bb9\u5206\u53d1\u4e0e\u5168\u7403\u63a5\u5165<\/h3>\n<p>\u5bf9\u4e8e\u5927\u578b\u7f51\u7ad9\u4e0e\u5a92\u4f53\u5206\u53d1\uff0c\u4f7f\u7528 CDN \u8fb9\u7f18 TLS \u7ec8\u6b62\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u6e90\u7ad9\u8d1f\u8f7d\u5e76\u63d0\u9ad8\u5168\u7403\u8bbf\u95ee\u901f\u5ea6\u3002\u82e5\u4e1a\u52a1\u6d89\u53ca\u654f\u611f\u7528\u6237\u6570\u636e\uff0c\u5e94\u5f00\u542f\u7aef\u5230\u6e90\u7ad9\u5168\u7a0b\u52a0\u5bc6\u3002<\/p>\n<h3>API \u4e0e\u52a8\u6001\u5185\u5bb9<\/h3>\n<p>API \u670d\u52a1\u901a\u5e38\u8981\u6c42\u4e25\u683c\u8ba4\u8bc1\u4e0e\u7aef\u5230\u7aef\u52a0\u5bc6\uff0c\u5efa\u8bae\u4f7f\u7528 mTLS \u6216 token-based 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