{"id":20184,"date":"2025-02-24T10:32:21","date_gmt":"2025-02-24T02:32:21","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/ddos-defense-why-us-high-protection-servers-excel\/"},"modified":"2025-04-17T10:36:05","modified_gmt":"2025-04-17T02:36:05","slug":"ddos-defense-why-us-high-protection-servers-excel","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/ddos-defense-why-us-high-protection-servers-excel\/","title":{"rendered":"\u70ba\u4ec0\u9ebc\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u662fDDoS\u9632\u79a6\u7684\u6700\u4f73\u9078\u64c7\uff1f"},"content":{"rendered":"<p>\u5728\u4e0d\u65b7\u6f14\u8b8a\u7684\u7db2\u8def\u5b89\u5168\u9818\u57df\uff0c<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/us\/cn2\/\" target=\"_blank\">\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668<\/a>\u5df2\u6210\u70ba\u62b5\u79a6\u8907\u96dcDDoS\u653b\u64ca\u7684\u9ec3\u91d1\u6a19\u6e96\u3002\u96a8\u8457\u653b\u64ca\u65b9\u5f0f\u65e5\u76ca\u8907\u96dc\uff0c\u8fd1\u671f\u4e8b\u4ef6\u4e2d\u653b\u64ca\u5cf0\u503c\u9054\u52303.4 Tbps\uff0c\u5c0d\u5f37\u5927\u4f3a\u670d\u5668\u57fa\u790e\u8a2d\u65bd\u7684\u9700\u6c42\u5f9e\u672a\u5982\u6b64\u8feb\u5207\u3002\u8b93\u6211\u5011\u6df1\u5165\u63a2\u8a0e\u4f7f\u7f8e\u570b\u89e3\u6c7a\u65b9\u6848\u812b\u7a4e\u800c\u51fa\u7684\u6280\u8853\u5c64\u9762\u3002<\/p>\n<h2><strong>\u7f8e\u570b\u9ad8\u9632\u57fa\u790e\u8a2d\u65bd\u7684\u6838\u5fc3\u6280\u8853\u512a\u52e2<\/strong><\/h2>\n<p>\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u79df\u7528\u7684\u6838\u5fc3\u5728\u65bc\u5176\u591a\u5c64\u9632\u79a6\u67b6\u69cb\u3002\u8207\u50b3\u7d71\u4f3a\u670d\u5668\u79df\u7528\u89e3\u6c7a\u65b9\u6848\u4e0d\u540c\uff0c\u9019\u4e9b\u7cfb\u7d71\u63a1\u7528\u914d\u5099\u6a5f\u5668\u5b78\u7fd2\u6f14\u7b97\u6cd5\u7684\u5206\u6563\u5f0f\u6e05\u6d17\u4e2d\u5fc3\u7db2\u8def\uff0c\u7528\u65bc\u5373\u6642\u5a01\u8105\u6aa2\u6e2c\u3002\u4ee5\u4e0b\u662f\u9632\u8b77\u5c64\u7684\u6280\u8853\u7d30\u5206\uff1a<\/p>\n<pre><code>\r\n# \u7b2c1\u5c64\uff1a\u7db2\u8def\u5c64\u904e\u6ffe\r\niptables -A INPUT -p tcp --dport 80 -m limit --limit 25\/minute --limit-burst 100 -j ACCEPT\r\n\r\n# \u7b2c2\u5c64\uff1a\u61c9\u7528\u5c64\u5206\u6790\r\nWAF\u898f\u5247\u793a\u4f8b\uff1a\r\nSecRule REQUEST_HEADERS:User-Agent \"@contains bad-bot\" \\\r\n    \"id:1,\\\r\n    phase:1,\\\r\n    deny,\\\r\n    status:403,\\\r\n    msg:'\u6aa2\u6e2c\u5230\u60e1\u610f\u6a5f\u5668\u4eba'\"\r\n<\/code><\/pre>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u5b89\u5168\u5be6\u65bd\u5916\uff0c\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u9084\u5229\u7528\u5148\u9032\u7684BGP\u8def\u7531\u6280\u8853\u3002\u9019\u4f7f\u5b83\u5011\u80fd\u5920\u900f\u904e\u667a\u6167\u5730\u5c07\u6d41\u91cf\u91cd\u65b0\u5206\u914d\u5230\u591a\u500b\u63a5\u5165\u9ede\u4f86\u8655\u7406\u5927\u6d41\u91cf\u653b\u64ca\u3002\u4ee5\u4e0b\u8996\u89ba\u5316\u5c55\u793a\u4e86DDoS\u653b\u64ca\u671f\u9593\u7684\u5178\u578b\u6d41\u91cf\u5206\u4f48\u6a21\u5f0f\uff1a<\/p>\n<pre><code>\r\n\u7db2\u8def\u62d3\u64b2\u793a\u4f8b\uff1a\r\n[\u7db2\u969b\u7db2\u8def] \u2192 [\u4efb\u64ad\u5165\u53e3\u9ede]\r\n                \u2193\r\n[\u6e05\u6d17\u4e2d\u5fc3] \u2192 [\u6d41\u91cf\u5206\u6790]\r\n                \u2193\r\n[\u6e05\u6f54\u6d41\u91cf] \u2192 [\u6e90\u4f3a\u670d\u5668]\r\n\r\nBGP\u516c\u544a\uff1a\r\nAS64496 announce 192.0.2.0\/24 {\r\n    path 64496 64497 64498\r\n    next-hop 203.0.113.1\r\n    community [ddos-mitigation]\r\n}\r\n<\/code><\/pre>\n<h2><strong>\u6230\u7565\u5730\u7406\u512a\u52e2<\/strong><\/h2>\n<p>\u7f8e\u570b\u8cc7\u6599\u4e2d\u5fc3\u7684\u6230\u7565\u4f4d\u7f6e\u5728\u5168\u7403\u9023\u901a\u6027\u65b9\u9762\u5275\u9020\u4e86\u7121\u8207\u502b\u6bd4\u7684\u512a\u52e2\u3002\u900f\u904eEquinix NY\u3001CoreSite LA1\u548cDigital Realty Chicago\u7b49\u4e3b\u8981\u7db2\u969b\u7db2\u8def\u4ea4\u63db\u4e2d\u5fc3\uff08IXPs\uff09\uff0c\u9019\u4e9b\u8a2d\u65bd\u8207140\u591a\u500b\u4e00\u7d1a\u4f9b\u61c9\u5546\u4fdd\u6301\u76f4\u63a5\u5c0d\u7b49\u95dc\u4fc2\u3002\u9019\u8f49\u5316\u70ba\uff1a<\/p>\n<ul>\n<li>\u8207\u4e9e\u6d32\u540c\u985e\u7522\u54c1\u76f8\u6bd4\uff0c\u5e73\u5747\u5ef6\u9072\u964d\u4f4e40%<\/li>\n<li>\u76f4\u63a5\u9023\u63a585%\u7684\u5168\u7403\u7db2\u969b\u7db2\u8def\u6d41\u91cf<\/li>\n<li>\u4e3b\u8981\u6a1e\u7d10\u7684\u983b\u5bec\u5bb9\u91cf\u8d85\u904e100 Tbps<\/li>\n<\/ul>\n<h2><strong>\u5148\u9032\u7684DDoS\u7de9\u89e3\u6280\u8853<\/strong><\/h2>\n<p>\u73fe\u4ee3\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u5be6\u65bd\u7684\u7de9\u89e3\u7b56\u7565\u9060\u8d85\u50b3\u7d71\u7684SYN\u6d2a\u6c34\u9632\u8b77\u3002\u8b93\u6211\u5011\u4f86\u770b\u770b\u9650\u901f\u548c\u6d41\u91cf\u5206\u6790\u7684\u5be6\u969b\u5be6\u65bd\uff1a<\/p>\n<pre><code>\r\n\/\/ \u6d41\u91cf\u6a21\u5f0f\u5206\u6790\r\nfunction analyzeTrafficPattern(incoming_requests) {\r\n    const threshold = calculateDynamicThreshold();\r\n    return incoming_requests.map(request => {\r\n        const score = ml_model.predict({\r\n            ip: request.ip,\r\n            request_rate: request.rate,\r\n            payload_pattern: request.payload\r\n        });\r\n        return {\r\n            is_malicious: score > threshold,\r\n            mitigation_action: determineMitigationStrategy(score)\r\n        };\r\n    });\r\n}\r\n<\/code><\/pre>\n<p>\u9019\u500b\u667a\u6167\u6d41\u91cf\u5206\u6790\u7cfb\u7d71\u5373\u6642\u9069\u61c9\u65b0\u51fa\u73fe\u7684\u5a01\u8105\uff0c\u5373\u4f7f\u5728\u6301\u7e8c\u653b\u64ca\u671f\u9593\u4e5f\u80fd\u4fdd\u630199.999%\u7684\u5e73\u5747\u904b\u884c\u6642\u9593\u3002<\/p>\n<h2><strong>\u6548\u80fd\u57fa\u6e96\u6e2c\u8a66\u548c\u5be6\u969b\u61c9\u7528<\/strong><\/h2>\n<p>\u5728\u5c07\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u8207\u5168\u7403\u66ff\u4ee3\u65b9\u6848\u9032\u884c\u6e2c\u8a66\u6642\uff0c\u6548\u80fd\u6307\u6a19\u986f\u793a\u51fa\u986f\u8457\u512a\u52e2\u3002\u4ee5\u4e0b\u662f\u57fa\u65bc\u5be6\u969b\u90e8\u7f72\u5834\u666f\u7684\u8a73\u7d30\u5206\u6790\uff1a<\/p>\n<pre><code>\r\n\u6548\u80fd\u6307\u6a19\uff081000\u6b21\u6e2c\u8a66\u7684\u5e73\u5747\u503c\uff09\uff1a\r\n\r\n\u57fa\u6e96\u6548\u80fd\uff1a\r\n\u2514\u2500\u2500 \u7db2\u8def\u541e\u5410\u91cf\uff1a40Gbps\u6e05\u6f54\u6d41\u91cf\r\n\u2514\u2500\u2500 \u8cc7\u6599\u5305\u8655\u7406\uff1a50M\u5305\/\u79d2\r\n\u2514\u2500\u2500 \u9023\u63a5\u8655\u7406\uff1a30M\u4e26\u767c\u9023\u63a5\r\n\r\n\u653b\u64ca\u689d\u4ef6\u4e0b\uff1a\r\n\u2514\u2500\u2500 \u653b\u64ca\u5438\u6536\uff1a\u9ad8\u9054800Gbps\r\n\u2514\u2500\u2500 \u7de9\u89e3\u97ff\u61c9\uff1a< 10\u79d2\r\n\u2514\u2500\u2500 \u8aa4\u5831\u7387\uff1a< 0.001%\r\n<\/code><\/pre>\n<h2><strong>\u57fa\u790e\u8a2d\u65bd\u90e8\u7f72\u6a21\u5f0f<\/strong><\/h2>\n<p>\u4f01\u696d\u7d1a\u9632\u8b77\u9700\u8981\u8907\u96dc\u7684\u90e8\u7f72\u67b6\u69cb\u3002\u73fe\u4ee3\u7f8e\u570b\u4f3a\u670d\u5668\u79df\u7528\u63d0\u4f9b\u5546\u5be6\u65bd\u7684\u5206\u6563\u5f0f\u7cfb\u7d71\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>\r\n\u67b6\u69cb\u6982\u89bd\uff1a\r\n                                    \r\n\u4e3b\u8cc7\u6599\u4e2d\u5fc3\uff08\u7f8e\u6771\uff09     \u6b21\u8cc7\u6599\u4e2d\u5fc3\uff08\u7f8e\u897f\uff09\r\n     \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510            \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n     \u2502\u908a\u7de3     \u2502            \u2502\u908a\u7de3     \u2502\r\n     \u2502\u8def\u7531\u5668   \u2502\u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\u2502\u8def\u7531\u5668   \u2502\r\n     \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518            \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\r\n          \u2502                      \u2502\r\n     \u250c\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2510            \u250c\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2510\r\n     \u2502DDoS    \u2502            \u2502DDoS     \u2502\r\n     \u2502\u904e\u6ffe\u5668  \u2502\u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\u2502\u904e\u6ffe\u5668   \u2502\r\n     \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518            \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\r\n          \u2502                      \u2502\r\n     \u250c\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2510            \u250c\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2510\r\n     \u2502\u8ca0\u8f09     \u2502            \u2502\u8ca0\u8f09     \u2502\r\n     \u2502\u5e73\u8861\u5668   \u2502\u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\u2502\u5e73\u8861\u5668   \u2502\r\n     \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518            \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\r\n          \u2502                      \u2502\r\n     \u250c\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2510            \u250c\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2510\r\n     \u2502\u61c9\u7528     \u2502            \u2502\u61c9\u7528     \u2502\r\n     \u2502\u4f3a\u670d\u5668   \u2502\u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\u2502\u4f3a\u670d\u5668   \u2502\r\n     \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518            \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n<\/code><\/pre>\n<p>\u9019\u7a2e\u67b6\u69cb\u78ba\u4fdd\u5373\u4f7f\u4e00\u500b\u8cc7\u6599\u4e2d\u5fc3\u51fa\u73fe\u554f\u984c\uff0c\u7cfb\u7d71\u4e5f\u80fd\u6301\u7e8c\u904b\u884c\u3002\u5728\u653b\u64ca\u6216\u786c\u9ad4\u6545\u969c\u671f\u9593\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u6545\u969c\u8f49\u79fb\u5230\u5197\u9918\u57fa\u790e\u8a2d\u65bd\uff0c\u4fdd\u6301\u670d\u52d9\u53ef\u7528\u6027\u3002<\/p>\n<h2><strong>\u6210\u672c\u6548\u76ca\u5206\u6790<\/strong><\/h2>\n<p>\u96d6\u7136\u9ad8\u7d1a\u9632\u8b77\u9700\u8981\u4e00\u5b9a\u6210\u672c\uff0c\u4f46\u8003\u616e\u5230\u7e3d\u64c1\u6709\u6210\u672c\uff08TCO\uff09\uff0c\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u79df\u7528\u63d0\u4f9b\u4e86\u66f4\u512a\u7684\u50f9\u503c\u3002\u5178\u578b\u7684\u4f01\u696d\u90e8\u7f72\u986f\u793a\uff1a<\/p>\n<ul>\n<li>\u9632\u8b77\u80fd\u529b\uff1a\u6bcfGbps\/\u67080.15\u7f8e\u5143\uff08\u76f8\u6bd4\u5168\u7403\u5e73\u57470.25\u7f8e\u5143\uff09<\/li>\n<li>\u57fa\u790e\u8a2d\u65bd\u53ef\u9760\u6027\uff1a\u7dad\u8b77\u6210\u672c\u964d\u4f4e40%<\/li>\n<li>\u71df\u904b\u6548\u7387\uff1a\u4eba\u5de5\u5e72\u9810\u9700\u6c42\u6e1b\u5c1165%<\/li>\n<\/ul>\n<h2><strong>\u5be6\u65bd\u6700\u4f73\u5be6\u52d9<\/strong><\/h2>\n<p>\u5c0d\u65bc\u8003\u616e\u90e8\u7f72\u7f8e\u570b\u9ad8\u9632\u4f3a\u670d\u5668\u7684\u6280\u8853\u5718\u968a\uff0c\u4ee5\u4e0b\u662f\u7d93\u904e\u9a57\u8b49\u7684\u5be6\u65bd\u6e05\u55ae\uff1a<\/p>\n<pre><code>\r\n\u90e8\u7f72\u6e05\u55ae\uff1a\r\n1. \u521d\u59cb\u8a2d\u7f6e\r\n   \u2610 \u7db2\u8def\u62d3\u64b2\u8a2d\u8a08\r\n   \u2610 BGP\u8def\u7531\u914d\u7f6e\r\n   \u2610 DDoS\u7de9\u89e3\u898f\u5247\u8a2d\u7f6e\r\n   \r\n2. \u5b89\u5168\u5f37\u5316\r\n   \u2610 \u6838\u5fc3\u53c3\u6578\u6700\u4f73\u5316\r\n   \u2610 \u670d\u52d9\u7d1a\u5225\u4fdd\u8b77\r\n   \u2610 \u5b58\u53d6\u63a7\u5236\u5be6\u65bd\r\n   \r\n3. \u76e3\u63a7\u8a2d\u7f6e\r\n   \u2610 \u6d41\u91cf\u5206\u6790\u5de5\u5177\r\n   \u2610 \u8b66\u5831\u7cfb\u7d71\u914d\u7f6e\r\n   \u2610 \u6548\u80fd\u6307\u6a19\u8ffd\u8e64\r\n<\/code><\/pre>\n<h2><strong>\u9032\u968e\u914d\u7f6e\u6307\u5357<\/strong><\/h2>\n<p>\u6700\u4f73\u9632\u8b77\u9700\u8981\u9069\u7576\u7684\u4f3a\u670d\u5668\u8abf\u6821\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u751f\u7522\u5c31\u7dd2\u7684\u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n<pre><code>\r\n# \u7cfb\u7d71\u7d1a\u6700\u4f73\u5316\r\nsysctl -w net.ipv4.tcp_max_syn_backlog=4096\r\nsysctl -w net.core.somaxconn=65535\r\nsysctl -w net.ipv4.tcp_syncookies=1\r\n\r\n# NGINX DDoS\u9632\u8b77\r\nhttp {\r\n    limit_conn_zone $binary_remote_addr zone=conn_limit_per_ip:10m;\r\n    limit_req_zone $binary_remote_addr zone=req_limit_per_ip:10m rate=5r\/s;\r\n    \r\n    server {\r\n        limit_conn conn_limit_per_ip 10;\r\n        limit_req zone=req_limit_per_ip burst=10 nodelay;\r\n    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