{"id":51143,"date":"2024-10-08T16:24:15","date_gmt":"2024-10-08T08:24:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/51143\/"},"modified":"2024-10-08T16:24:16","modified_gmt":"2024-10-08T08:24:16","slug":"nginx-%e5%a6%82%e4%bd%95%e9%98%b2%e6%ad%a2-cc-%e6%94%bb%e6%93%8a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/51143\/","title":{"rendered":"nginx \u5982\u4f55\u9632\u6b62 CC \u653b\u64ca"},"content":{"rendered":"

nginx \u5982\u4f55\u9632\u6b62 CC \u653b\u64ca<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0cCC \u653b\u64ca\uff08Challenge Collapsar Attack\uff09\u5df2\u6210\u70ba\u4e00\u7a2e\u5e38\u898b\u7684\u7db2\u7d61\u653b\u64ca\u65b9\u5f0f\uff0c\u7279\u5225\u662f\u91dd\u5c0d\u7db2\u7ad9\u548c\u4f3a\u670d\u5668\u7684\u53ef\u7528\u6027\u3002\u9019\u7a2e\u653b\u64ca\u901a\u904e\u5927\u91cf\u7684\u8acb\u6c42\u4f86\u6d88\u8017\u4f3a\u670d\u5668\u8cc7\u6e90\uff0c\u5c0e\u81f4\u6b63\u5e38\u7528\u6236\u7121\u6cd5\u8a2a\u554f\u7db2\u7ad9\u3002nginx \u4f5c\u70ba\u4e00\u6b3e\u9ad8\u6548\u7684\u7db2\u9801\u4f3a\u670d\u5668\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9632\u79a6 CC \u653b\u64ca\u7684\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528 nginx \u4f86\u6709\u6548\u9632\u6b62 CC \u653b\u64ca\u3002<\/p>\n

1. \u4f7f\u7528\u9650\u6d41\u529f\u80fd<\/h2>\n

nginx \u63d0\u4f9b\u4e86\u9650\u6d41\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u6bcf\u500b IP \u5730\u5740\u7684\u8acb\u6c42\u6578\u91cf\u4f86\u9632\u6b62 CC \u653b\u64ca\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n

http {\n    limit_req_zone $binary_remote_addr zone=one:10m rate=1r\/s;\n\n    server {\n        location \/ {\n            limit_req zone=one burst=5;\n            # \u5176\u4ed6\u914d\u7f6e\n        }\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u914d\u7f6e\u4e2d\uff0c`limit_req_zone` \u6307\u4ee4\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba `one` \u7684\u9650\u6d41\u5340\u57df\uff0c\u5141\u8a31\u6bcf\u500b IP \u5730\u5740\u6bcf\u79d2\u6700\u591a\u767c\u9001 1 \u500b\u8acb\u6c42\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u7a81\u767c\u60c5\u6cc1\u4e0b\u6700\u591a\u5141\u8a31 5 \u500b\u8acb\u6c42\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u4f86\u81ea\u55ae\u4e00 IP \u7684\u8acb\u6c42\u6578\u91cf\uff0c\u964d\u4f4e\u653b\u64ca\u98a8\u96aa\u3002<\/p>\n
2. \u4f7f\u7528\u9632\u706b\u7246<\/h2>\n
\u9664\u4e86 nginx \u7684\u5167\u5efa\u529f\u80fd\uff0c\u9084\u53ef\u4ee5\u7d50\u5408\u9632\u706b\u7246\u4f86\u9032\u4e00\u6b65\u589e\u5f37\u5b89\u5168\u6027\u3002\u4f7f\u7528 iptables \u6216\u5176\u4ed6\u9632\u706b\u7246\u5de5\u5177\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u898f\u5247\u4f86\u963b\u64cb\u53ef\u7591\u7684 IP \u5730\u5740\u3002\u4f8b\u5982\uff1a<\/p>\n
iptables -A INPUT -p tcp --dport 80 -m conntrack --ctstate NEW -m recent --set\niptables -A INPUT -p tcp --dport 80 -m conntrack --ctstate NEW -m recent --update --seconds 60 --hitcount 10 -j DROP<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u6703\u963b\u64cb\u5728 60 \u79d2\u5167\u767c\u9001\u8d85\u904e 10 \u6b21\u8acb\u6c42\u7684 IP \u5730\u5740\uff0c\u9032\u4e00\u6b65\u6e1b\u5c11 CC \u653b\u64ca\u7684\u5f71\u97ff\u3002<\/p>\n
3. \u555f\u7528 CAPTCHA \u9a57\u8b49<\/h2>\n
\u5c0d\u65bc\u67d0\u4e9b\u7279\u5b9a\u7684\u8acb\u6c42\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 CAPTCHA \u9a57\u8b49\u4f86\u78ba\u4fdd\u8acb\u6c42\u4f86\u81ea\u4eba\u985e\u7528\u6236\u3002\u96d6\u7136\u9019\u9700\u8981\u984d\u5916\u7684\u914d\u7f6e\u548c\u958b\u767c\uff0c\u4f46\u5c0d\u65bc\u9632\u6b62\u81ea\u52d5\u5316\u653b\u64ca\u975e\u5e38\u6709\u6548\u3002<\/p>\n
4. \u8a2d\u7f6e\u8a2a\u554f\u63a7\u5236<\/h2>\n
nginx \u5141\u8a31\u901a\u904e\u8a2d\u7f6e\u8a2a\u554f\u63a7\u5236\u4f86\u9650\u5236\u67d0\u4e9b IP \u5730\u5740\u7684\u8a2a\u554f\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u914d\u7f6e\u4f86\u5141\u8a31\u7279\u5b9a IP \u5730\u5740\u8a2a\u554f\uff1a<\/p>\n
server {\n    location \/ {\n        allow 192.168.1.1;  # \u5141\u8a31\u7684 IP\n        deny all;           # \u62d2\u7d55\u5176\u4ed6\u6240\u6709 IP\n    }\n}<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u963b\u6b62\u4f86\u81ea\u4e0d\u660e\u4f86\u6e90\u7684\u8acb\u6c42\uff0c\u6e1b\u5c11\u6f5b\u5728\u7684\u653b\u64ca\u98a8\u96aa\u3002<\/p>\n
5. \u76e3\u63a7\u548c\u65e5\u8a8c\u5206\u6790<\/h2>\n
\u5b9a\u671f\u76e3\u63a7\u4f3a\u670d\u5668\u7684\u65e5\u8a8c\u6587\u4ef6\u53ef\u4ee5\u5e6b\u52a9\u53ca\u6642\u767c\u73fe\u7570\u5e38\u6d41\u91cf\u3002nginx \u7684\u65e5\u8a8c\u529f\u80fd\u53ef\u4ee5\u8a18\u9304\u6240\u6709\u8acb\u6c42\uff0c\u901a\u904e\u5206\u6790\u9019\u4e9b\u65e5\u8a8c\uff0c\u53ef\u4ee5\u8b58\u5225\u51fa\u53ef\u7591\u7684\u884c\u70ba\u6a21\u5f0f\uff0c\u4e26\u53ca\u6642\u63a1\u53d6\u884c\u52d5\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u9632\u6b62 CC \u653b\u64ca\u662f\u4e00\u9805\u6301\u7e8c\u7684\u5de5\u4f5c\uff0c\u5229\u7528 nginx \u7684\u591a\u7a2e\u529f\u80fd\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u653b\u64ca\u7684\u5f71\u97ff\u3002\u901a\u904e\u9650\u6d41\u3001\u9632\u706b\u7246\u3001CAPTCHA \u9a57\u8b49\u3001\u8a2a\u554f\u63a7\u5236\u4ee5\u53ca\u65e5\u8a8c\u5206\u6790\u7b49\u624b\u6bb5\uff0c\u7db2\u7ad9\u7ba1\u7406\u8005\u53ef\u4ee5\u63d0\u9ad8\u4f3a\u670d\u5668\u7684\u5b89\u5168\u6027\uff0c\u78ba\u4fdd\u6b63\u5e38\u7528\u6236\u7684\u8a2a\u554f\u4e0d\u53d7\u5f71\u97ff\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u4fdd\u8b77\u60a8\u7684\u7db2\u7ad9\uff0c\u8acb\u53c3\u8003\u6211\u5011\u7684 \u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u4f9b\u7a69\u5b9a\u548c\u5b89\u5168\u7684\u4f3a\u670d\u5668\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Nginx \u914d\u7f6e\u9632\u706b\u5899\u3001\u901f\u7387\u9650\u5236\u548c\u5176\u4ed6\u7b56\u7565\uff0c\u6709\u6548\u9632\u6b62 CC \u653b\u51fb\uff0c\u4fdd\u62a4\u7f51\u7ad9\u5b89\u5168\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-51143","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/51143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=51143"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/51143\/revisions"}],"predecessor-version":[{"id":51144,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/51143\/revisions\/51144"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=51143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=51143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=51143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}