{"id":17749,"date":"2025-03-13T12:02:11","date_gmt":"2025-03-13T12:02:11","guid":{"rendered":"https:\/\/nodemaven.com\/?post_type=glossary&#038;p=17749"},"modified":"2025-03-13T12:02:29","modified_gmt":"2025-03-13T12:02:29","slug":"error-521","status":"publish","type":"glossary","link":"https:\/\/nodemaven.com\/zh\/glossary\/error-521\/","title":{"rendered":"\u9519\u8bef 521"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u4f7f\u7528\u65f6 <a href=\"https:\/\/nodemaven.com\/zh\/\">\u4f4f\u5b85\u4ee3\u7406 <\/a>\u8bbf\u95ee\u7f51\u7ad9\u6216\u5728\u7ebf\u670d\u52a1\u65f6\uff0c\u9047\u5230\u9519\u8bef\u4f1a\u6253\u4e71\u60a8\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u9519\u8bef 521\uff0c\u5b83\u53d1\u751f\u5728\u6e90\u670d\u52a1\u5668\uff08\u7f51\u7ad9\u7684\u6258\u7ba1\u670d\u52a1\u5668\uff09\u62d2\u7edd\u7531 Cloudflare \u53d1\u8d77\u7684\u8fde\u63a5\u65f6\uff1bCloudflare \u662f\u4e00\u79cd\u88ab\u5e7f\u6cdb\u4f7f\u7528\u7684\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u548c\u5b89\u5168\u670d\u52a1\u3002\u9519\u8bef 521 \u662f\u4e00\u79cd Web \u670d\u52a1\u5668\u5b95\u673a\u9519\u8bef\uff0c\u5f53 Cloudflare \u5c1d\u8bd5\u8fde\u63a5\u6e90\u670d\u52a1\u5668\uff0c\u4f46\u670d\u52a1\u5668\u62d2\u7edd\u4e86\u8be5\u8fde\u63a5\u65f6\u4fbf\u4f1a\u51fa\u73b0\u3002\u8fd9\u901a\u5e38\u53d1\u751f\u5728\u6e90\u670d\u52a1\u5668\u79bb\u7ebf\u3001\u914d\u7f6e\u9519\u8bef\u6216\u9047\u5230\u6280\u672f\u95ee\u9898\u65f6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u9519\u8bef\u63d0\u793a\u901a\u5e38\u663e\u793a\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201c\u9519\u8bef 521\uff1aWeb \u670d\u52a1\u5668\u5df2\u5b95\u673a\u3002\u201d<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u9519\u8bef 521\uff1f<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u670d\u52a1\u5668\u79bb\u7ebf\uff1a <\/strong>\u6e90\u670d\u52a1\u5668\u53ef\u80fd\u7531\u4e8e\u7ef4\u62a4\u3001\u786c\u4ef6\u6545\u969c\u6216\u65ad\u7535\u800c\u5b8c\u5168\u5b95\u673a\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9632\u706b\u5899\u9650\u5236<\/strong>\uff1a\u670d\u52a1\u5668\u7684\u9632\u706b\u5899\u53ef\u80fd\u6b63\u5728\u62e6\u622a Cloudflare \u7684 IP \u5730\u5740\uff0c\u4ece\u800c\u963b\u6b62\u8fde\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u670d\u52a1\u5668\u914d\u7f6e\u9519\u8bef<\/strong>\uff1a\u4e0d\u6b63\u786e\u7684\u670d\u52a1\u5668\u8bbe\u7f6e\uff0c\u4f8b\u5982\u7aef\u53e3\u914d\u7f6e\u6216 SSL\/TLS \u95ee\u9898\uff0c\u90fd\u53ef\u80fd\u5bfc\u81f4\u670d\u52a1\u5668\u62d2\u7edd\u8fde\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f51\u7edc\u95ee\u9898<\/strong>\uff1aCloudflare 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class=\"wp-block-paragraph\">\u8054\u7cfb\u7f51\u7ad9\u6240\u6709\u8005\u6216\u6258\u7ba1\u670d\u52a1\u5546\uff0c\u786e\u8ba4\u662f\u5426\u5b58\u5728\u4efb\u4f55\u670d\u52a1\u5668\u7aef\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. \u68c0\u67e5\u9632\u706b\u5899\u8bbe\u7f6e<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u786e\u4fdd\u670d\u52a1\u5668\u7684\u9632\u706b\u5899\u6ca1\u6709\u5c4f\u853d Cloudflare \u7684 IP \u5730\u5740\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06 Cloudflare \u7684 IP \u6bb5\u52a0\u5165\u767d\u540d\u5355\uff0c\u4ee5\u5b9e\u73b0\u987a\u7545\u901a\u4fe1\u3002\u4f60\u53ef\u4ee5\u5728 Cloudflare \u5b98\u65b9\u7f51\u7ad9\u4e0a\u627e\u5230\u5176 IP \u5217\u8868\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. \u68c0\u67e5\u670d\u52a1\u5668\u914d\u7f6e<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u786e\u8ba4\u670d\u52a1\u5668\u914d\u7f6e\u6b63\u786e\uff0c\u5305\u62ec\u7aef\u53e3\u8bbe\u7f6e\u548c SSL\/TLS \u8bc1\u4e66\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u786e\u4fdd\u670d\u52a1\u5668\u6b63\u5728\u6b63\u786e\u7684\u7aef\u53e3\u4e0a\u76d1\u542c\uff08\u4f8b\u5982\uff0cHTTP \u4f7f\u7528\u7aef\u53e3 80\uff0cHTTPS \u4f7f\u7528\u7aef\u53e3 443\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. \u6d4b\u8bd5\u7f51\u7edc\u8fde\u63a5<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u68c0\u67e5 Cloudflare \u4e0e\u6e90\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u7f51\u7edc\u8fde\u63a5\uff0c\u4ee5\u8bc6\u522b\u4efb\u4f55\u8fde\u63a5\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528\u4ee3\u7406\uff0c\u8bf7\u5c1d\u8bd5\u5207\u6362\u5230\u5176\u4ed6\u4ee3\u7406\u670d\u52a1\u5668\u6216\u4f4d\u7f6e\uff0c\u770b\u770b\u95ee\u9898\u662f\u5426\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. \u91cd\u542f\u670d\u52a1\u5668<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u670d\u52a1\u5668\u51fa\u73b0\u4e34\u65f6\u95ee\u9898\uff0c\u91cd\u542f\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u89e3\u51b3\u8be5\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u786e\u4fdd\u91cd\u542f\u540e\u6240\u6709\u5fc5\u8981\u7684\u670d\u52a1\uff08\u4f8b\u5982 Web \u670d\u52a1\u5668\u3001\u6570\u636e\u5e93\uff09\u90fd\u6b63\u5728\u8fd0\u884c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6. \u4f7f\u7528\u5176\u4ed6\u4ee3\u7406<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u95ee\u9898\u4ecd\u7136\u5b58\u5728\uff0c\u8bf7\u5207\u6362\u5230\u5176\u4ed6\u4ee3\u7406\u670d\u52a1\u5668\u6216\u670d\u52a1\u5546\u3002\u50cf NodeMaven \u63d0\u4f9b\u7684\u8fd9\u7c7b\u9ad8\u8d28\u91cf\u4ee3\u7406\uff0c\u51fa\u73b0\u8fde\u63a5\u95ee\u9898\u7684\u53ef\u80fd\u6027\u66f4\u4f4e\u3002 <a href=\"https:\/\/nodemaven.com\/zh\/locations\/us-proxy\/\">\u7f8e\u56fd\u4ee3\u7406 <\/a>NodeMaven 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class=\"wp-block-paragraph\">\u9519\u8bef 521 \u662f\u4e00\u4e2a\u8fde\u63a5\u88ab\u62d2\u7edd\u7684\u95ee\u9898\uff0c\u5728\u4f7f\u7528\u4ee3\u7406\u65f6\u53ef\u80fd\u4f1a\u53d1\u751f\uff0c\u4f46\u901a\u8fc7\u8bc6\u522b\u5e76\u89e3\u51b3\u5176\u6839\u672c\u539f\u56e0\u5373\u53ef\u4fee\u590d\u3002\u901a\u8fc7\u68c0\u67e5\u6e90\u670d\u52a1\u5668\u3001\u68c0\u67e5\u9632\u706b\u5899\u8bbe\u7f6e\u4ee5\u53ca\u786e\u4fdd\u6b63\u786e\u7684\u4ee3\u7406\u914d\u7f6e\uff0c\u4f60\u53ef\u4ee5\u6700\u5927\u9650\u5ea6\u5730\u964d\u4f4e\u9047\u5230\u6b64\u9519\u8bef\u7684\u98ce\u9669\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u9700\u8981\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684\u4ee3\u7406\u6765\u964d\u4f4e\u51fa\u73b0 521 \u7b49\u9519\u8bef\u7684\u53ef\u80fd\u6027\uff0c\u53ef\u4ee5\u8003\u8651 NodeMaven \u53ca\u5176 <a 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