{"id":12277,"date":"2024-03-17T08:00:52","date_gmt":"2024-03-17T00:00:52","guid":{"rendered":"https:\/\/www.simcentric.com\/?p=12277"},"modified":"2024-03-20T15:50:46","modified_gmt":"2024-03-20T07:50:46","slug":"suffering-from-ddos-attacks-hong-kong-dedicated-server-defense-guide-to-the-rescue","status":"publish","type":"post","link":"https:\/\/www.simcentric.com\/sc\/hong-kong-dedicated-server-sc\/suffering-from-ddos-attacks-hong-kong-dedicated-server-defense-guide-to-the-rescue\/","title":{"rendered":"\u906d\u53d7DDoS\u653b\u51fb?\u9999\u6e2f\u72ec\u670d\u9632\u5fa1\u6307\u5357\u6765\u52a9\u4f60!"},"content":{"rendered":"

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\u4ec0\u4e48\u662fDDoS\u653b\u51fb?<\/strong><\/h2>\n

DDoS\u5168\u79f0Distributed Denial of Service,\u5373\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002\u9ed1\u5ba2\u901a\u8fc7\u64cd\u63a7\u5927\u91cf”\u50f5\u5c38\u4e3b\u673a”\u5bf9\u76ee\u6807\u670d\u52a1\u5668\u53d1\u8d77\u5927\u91cf\u8bf7\u6c42,\u8017\u5c3d\u670d\u52a1\u5668\u5e26\u5bbd\u548c\u8ba1\u7b97\u8d44\u6e90,\u5bfc\u81f4\u6b63\u5e38\u7528\u6237\u65e0\u6cd5\u8bbf\u95ee\u3002\u5e38\u89c1\u7684\u653b\u51fb\u624b\u6bb5\u5305\u62ecsyn flood\u3001udp flood\u3001http flood\u7b49\u3002<\/p>\n

DDoS\u653b\u51fb\u901a\u5e38\u96be\u4ee5\u5b8c\u5168\u9632\u5fa1,\u56e0\u4e3a\u653b\u51fb\u6d41\u91cf\u5f80\u5f80\u6765\u81ea\u5168\u7403\u5404\u5730\u7684\u50f5\u5c38\u7f51\u7edc,\u96be\u4ee5\u4e00\u4e00\u5c4f\u853d\u3002\u4f20\u7edf\u7684\u5b89\u5168\u8bbe\u5907\u5982\u9632\u706b\u5899\u5f88\u5bb9\u6613\u88ab\u6d77\u91cf\u8bf7\u6c42\u6df9\u6ca1\u3002\u56e0\u6b64,\u6709\u6548\u7684DDoS\u9632\u5fa1\u8981\u4ece\u591a\u4e2a\u5c42\u9762\u5165\u624b\u3002<\/p>\n

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\u5e26\u5bbd\u6269\u5bb9\u4e0e\u6d41\u91cf\u6e05\u6d17<\/strong><\/h2>\n

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\u540c\u65f6\u8fd8\u8981\u5f15\u5165\u4e13\u4e1a\u7684\u6d41\u91cf\u6e05\u6d17\u670d\u52a1\u3002\u6e05\u6d17\u670d\u52a1\u5546\u5728\u8fd0\u8425\u5546\u9aa8\u5e72\u7f51\u90e8\u7f72\u9ad8\u9632\u8282\u70b9,\u5c06\u670d\u52a1\u5668\u7684\u5916\u7f51IP\u66ff\u6362\u4e3a\u9ad8\u9632IP,\u6076\u610f\u6d41\u91cf\u5728\u9ad8\u9632\u8282\u70b9\u88ab\u8fc7\u6ee4\u6389,\u4ec5\u5c06\u6e05\u6d17\u540e\u7684\u5e72\u51c0\u6d41\u91cf\u56de\u6ce8\u5230\u6e90\u7ad9\u3002\u8457\u540d\u7684\u6e05\u6d17\u670d\u52a1\u5546\u5982\u963f\u91cc\u4e91,\u817e\u8baf\u4e91,\u77e5\u540d\u5382\u5546Cloudflare,Stackpath\u7b49\u3002<\/p>\n

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\u5e94\u7528\u5c42\u9632\u62a4\u4e0eCC\u9632\u5fa1<\/strong><\/h2>\n

\u5b8c\u6210\u5e26\u5bbd\u548c\u6d41\u91cf\u9632\u62a4\u540e,\u4e0b\u4e00\u6b65\u662f\u52a0\u56fa\u670d\u52a1\u5668\u81ea\u8eab\u7684\u6297\u653b\u51fb\u80fd\u529b,\u9632\u6b62\u5e94\u7528\u5c42\u6f0f\u6d1e\u88ab\u9ed1\u5ba2\u5229\u7528\u3002\u53ef\u4ee5\u90e8\u7f72WAF(Web Application Firewall)\u6765\u62e6\u622a\u5e38\u89c1\u7684web\u653b\u51fb\u5982sql\u6ce8\u5165\u3001XSS\u7b49\u3002<\/p>\n

\u6b64\u5916,\u8fd8\u8981\u9632\u8303CC\u653b\u51fb(Challenge Collapsar)\u3002CC\u653b\u51fb\u662f\u4e00\u79cd\u9488\u5bf9\u9875\u9762\u8bf7\u6c42\u7684flood\u578b\u653b\u51fb,\u901a\u8fc7\u4e0d\u65ad\u5237\u65b0\u9875\u9762\u8017\u5c3d\u670d\u52a1\u5668\u8d44\u6e90\u3002\u53ef\u4ee5\u5728WAF\u6216\u662f\u8d1f\u8f7d\u5747\u8861\u8bbe\u5907\u4e0a\u90e8\u7f72\u9891\u7387\u9650\u5236\u3001\u9a8c\u8bc1\u7801\u6311\u6218\u7b49\u9632CC\u89c4\u5219\u3002\u4f8b\u5982nginx\u7684ngx_http_limit_req_module\u5c31\u652f\u6301\u6309IP\u9650\u901f,\u793a\u4f8b\u914d\u7f6e\u5982\u4e0b:<\/p>\n

http {\r\n    limit_req_zone $binary_remote_addr zone=mylimit:10m rate=10r\/s;\r\n\r\n    server {\r\n        location \/login\/ {\r\n            limit_req zone=mylimit;\r\n            proxy_pass http:\/\/my_upstream;\r\n        }\r\n    }\r\n}  <\/code><\/pre>\n
\u4ee5\u4e0a\u914d\u7f6e\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3amylimit\u7684\u8bf7\u6c42\u9650\u5236\u533a\u57df,\u5e73\u5747\u8bf7\u6c42\u901f\u7387\u4e3a\u6bcf\u79d210\u6b21\u3002\u5982\u679c\u67d0IP\u8bf7\u6c42\u9891\u7387\u8d85\u8fc7\u8be5\u4e0a\u9650,\u5219\u8bf7\u6c42\u4f1a\u88ab\u5ef6\u8fdf\u5904\u7406\u6216\u76f4\u63a5\u62d2\u7edd\u3002<\/p>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
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\u5bf9\u4e8e\u5df2\u5b89\u88c5\u7684\u7a0b\u5e8f\u548c\u670d\u52a1,\u4e5f\u8981\u5b9a\u671f\u8fdb\u884c\u5b89\u5168\u5ba1\u8ba1\u548c\u66f4\u65b0,\u6253\u4e0a\u6700\u65b0\u7684\u5b89\u5168\u8865\u4e01,\u964d\u4f4e\u6f5c\u5728\u98ce\u9669\u3002\u53ef\u4ee5\u5b89\u88c5lynis\u7b49\u5de5\u5177\u8fdb\u884c\u7cfb\u7edf\u57fa\u7ebf\u68c0\u67e5:<\/p>\n
# Install Lynis\r\napt-get install lynis\r\n\r\n# Start a security audit  \r\nlynis audit system<\/code><\/pre>\n
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[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
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\u540c\u65f6\u8981\u7acb\u5373\u901a\u77e5\u7528\u6237\u670d\u52a1\u6682\u65f6\u4e2d\u65ad,\u5e76\u53ca\u65f6\u901a\u8fc7\u5b98\u7f51\u3001\u90ae\u4ef6\u3001\u793e\u4ea4\u5a92\u4f53\u53d1\u5e03\u6062\u590d\u8fdb\u5c55,\u5b89\u629a\u7528\u6237\u60c5\u7eea\u3002\u4e8b\u540e\u4e5f\u8981\u5347\u7ea7\u9632\u62a4\u7b56\u7565,\u8865\u6551\u6f5c\u5728\u5a01\u80c1,\u907f\u514d\u91cd\u8e48\u8986\u8f99\u3002<\/p>\n
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\u5c0f\u7ed3<\/strong><\/h2>\n
DDoS\u653b\u51fb\u72b9\u5982\u6d2a\u6c34\u731b\u517d,\u4f46\u53ea\u8981\u63d0\u524d\u505a\u597d\u9632\u8303,\u5c31\u4e0d\u8db3\u4e3a\u60e7\u3002\u901a\u8fc7\u5e26\u5bbd\u6269\u5bb9\u3001\u6d41\u91cf\u6e05\u6d17\u6765\u62b5\u5fa1\u7f51\u7edc\u5c42\u653b\u51fb;\u90e8\u7f72WAF\u548cCC\u9632\u62a4\u62b5\u5fa1\u5e94\u7528\u5c42\u653b\u51fb;\u518d\u901a\u8fc7\u51cf\u5c11\u5f00\u653e\u7aef\u53e3,\u7cfb\u7edf\u52a0\u56fa\u6765\u964d\u4f4e\u88ab\u653b\u51fb\u7684\u98ce\u9669\u3002\u540c\u65f6\u505a\u597d\u9999\u6e2f\u670d\u52a1\u5668\u5e94\u6025\u9884\u6848,\u5728\u5173\u952e\u65f6\u523b\u80fd\u4e34\u5371\u4e0d\u4e71\u3002<\/p>\n
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