{"id":44510,"date":"2024-10-06T16:09:15","date_gmt":"2024-10-06T08:09:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44510\/"},"modified":"2024-10-06T16:09:15","modified_gmt":"2024-10-06T08:09:15","slug":"linux-%e4%bc%ba%e6%9c%8d%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e8%a8%ad%e7%bd%ae-ddos-%e4%bf%9d%e8%ad%b7%e6%a9%9f%e5%88%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44510\/","title":{"rendered":"Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8a2d\u7f6e DDoS \u4fdd\u8b77\u6a5f\u5236"},"content":{"rendered":"<h1 id=\"linux-%e4%bc%ba%e6%9c%8d%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e8%a8%ad%e7%bd%ae-ddos-%e4%bf%9d%e8%ad%b7%e6%a9%9f%e5%88%b6-xpwAWlWHcI\">Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8a2d\u7f6e DDoS \u4fdd\u8b77\u6a5f\u5236<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0cDDoS\uff08\u5206\u6563\u5f0f\u62d2\u7d55\u670d\u52d9\uff09\u653b\u64ca\u5df2\u6210\u70ba\u7db2\u7d61\u5b89\u5168\u7684\u4e00\u5927\u5a01\u8105\u3002\u9019\u985e\u653b\u64ca\u901a\u904e\u5927\u91cf\u7684\u6d41\u91cf\u4f86\u6df9\u6c92\u4f3a\u670d\u5668\uff0c\u5c0e\u81f4\u5408\u6cd5\u7528\u6236\u7121\u6cd5\u8a2a\u554f\u670d\u52d9\u3002\u5c0d\u65bc\u4f7f\u7528 Linux \u4f3a\u670d\u5668\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u8a2d\u7f6e\u6709\u6548\u7684 DDoS \u4fdd\u8b77\u6a5f\u5236\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u6709\u6548\u7684\u7b56\u7565\u548c\u6280\u5de7\uff0c\u4ee5\u5e6b\u52a9\u60a8\u52a0\u5f37\u4f3a\u670d\u5668\u7684\u5b89\u5168\u6027\u3002<\/p>\n<h2 id=\"%e4%ba%86%e8%a7%a3-ddos-%e6%94%bb%e6%93%8a%e7%9a%84%e9%a1%9e%e5%9e%8b-xpwAWlWHcI\">\u4e86\u89e3 DDoS \u653b\u64ca\u7684\u985e\u578b<\/h2>\n<p>\u5728\u8a2d\u7f6e\u9632\u8b77\u6a5f\u5236\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3 DDoS \u653b\u64ca\u7684\u4e0d\u540c\u985e\u578b\u3002\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>\u6d41\u91cf\u578b\u653b\u64ca\uff1a<\/strong>\u9019\u985e\u653b\u64ca\u901a\u904e\u5927\u91cf\u7684\u6d41\u91cf\u4f86\u6df9\u6c92\u4f3a\u670d\u5668\uff0c\u5e38\u898b\u7684\u6709 UDP \u6d2a\u6c34\u548c ICMP \u6d2a\u6c34\u3002<\/li>\n<li><strong>\u5354\u8b70\u578b\u653b\u64ca\uff1a<\/strong>\u9019\u985e\u653b\u64ca\u5229\u7528\u7db2\u7d61\u5354\u8b70\u7684\u6f0f\u6d1e\uff0c\u4f8b\u5982 SYN \u6d2a\u6c34\u653b\u64ca\uff0c\u4f86\u6d88\u8017\u4f3a\u670d\u5668\u7684\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u61c9\u7528\u5c64\u653b\u64ca\uff1a<\/strong>\u9019\u985e\u653b\u64ca\u91dd\u5c0d\u7279\u5b9a\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u4f8b\u5982 HTTP \u8acb\u6c42\u6d2a\u6c34\uff0c\u65e8\u5728\u4f7f\u61c9\u7528\u7a0b\u5e8f\u7121\u6cd5\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a8%ad%e7%bd%ae-ddos-%e4%bf%9d%e8%ad%b7%e6%a9%9f%e5%88%b6%e7%9a%84%e7%ad%96%e7%95%a5-xpwAWlWHcI\">\u8a2d\u7f6e DDoS \u4fdd\u8b77\u6a5f\u5236\u7684\u7b56\u7565<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%98%b2%e7%81%ab%e7%89%86-xpwAWlWHcI\">1. \u4f7f\u7528\u9632\u706b\u7246<\/h3>\n<p>\u9632\u706b\u7246\u662f\u4fdd\u8b77\u4f3a\u670d\u5668\u7684\u7b2c\u4e00\u9053\u9632\u7dda\u3002\u60a8\u53ef\u4ee5\u914d\u7f6e Linux \u7684 iptables \u4f86\u904e\u6ffe\u4e0d\u5fc5\u8981\u7684\u6d41\u91cf\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684 iptables \u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n<pre><code>iptables -A INPUT -p tcp --dport 80 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT\niptables -A INPUT -p tcp --dport 443 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT\niptables -A INPUT -p tcp --dport 22 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT\niptables -A INPUT -j DROP<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5141\u8a31 HTTP\u3001HTTPS \u548c SSH \u6d41\u91cf\uff0c\u4e26\u62d2\u7d55\u6240\u6709\u5176\u4ed6\u6d41\u91cf\u3002<\/p>\n<h3 id=\"2-%e9%99%90%e5%88%b6%e9%80%a3%e6%8e%a5%e9%80%9f%e7%8e%87-xpwAWlWHcI\">2. \u9650\u5236\u9023\u63a5\u901f\u7387<\/h3>\n<p>\u901a\u904e\u9650\u5236\u6bcf\u500b IP \u5730\u5740\u7684\u9023\u63a5\u901f\u7387\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11 DDoS \u653b\u64ca\u7684\u5f71\u97ff\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 iptables \u7684 limit \u6a21\u584a\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>iptables -A INPUT -p tcp --dport 80 -m conntrack --ctstate NEW -m limit --limit 10\/minute --limit-burst 20 -j ACCEPT\niptables -A INPUT -p tcp --dport 80 -j DROP<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u9650\u5236\u6bcf\u500b IP \u6bcf\u5206\u9418\u6700\u591a\u53ea\u80fd\u5efa\u7acb 10 \u500b\u9023\u63a5\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%b5%81%e9%87%8f%e6%b8%85%e6%b4%97%e6%9c%8d%e5%8b%99-xpwAWlWHcI\">3. \u4f7f\u7528\u6d41\u91cf\u6e05\u6d17\u670d\u52d9<\/h3>\n<p>\u5c0d\u65bc\u5927\u578b\u4f01\u696d\uff0c\u8003\u616e\u4f7f\u7528\u5c08\u696d\u7684\u6d41\u91cf\u6e05\u6d17\u670d\u52d9\u662f\u660e\u667a\u7684\u9078\u64c7\u3002\u9019\u4e9b\u670d\u52d9\u80fd\u5920\u5728\u653b\u64ca\u767c\u751f\u6642\u81ea\u52d5\u904e\u6ffe\u60e1\u610f\u6d41\u91cf\uff0c\u78ba\u4fdd\u5408\u6cd5\u6d41\u91cf\u80fd\u5920\u9806\u5229\u5230\u9054\u4f3a\u670d\u5668\u3002<\/p>\n<h3 id=\"4-%e7%9b%a3%e6%8e%a7%e5%92%8c%e6%97%a5%e8%aa%8c%e5%88%86%e6%9e%90-xpwAWlWHcI\">4. \u76e3\u63a7\u548c\u65e5\u8a8c\u5206\u6790<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7\u4f3a\u670d\u5668\u7684\u6d41\u91cf\u548c\u65e5\u8a8c\u662f\u767c\u73fe\u6f5b\u5728\u653b\u64ca\u7684\u95dc\u9375\u3002\u4f7f\u7528\u5de5\u5177\u5982 <code>fail2ban<\/code> \u53ef\u4ee5\u81ea\u52d5\u6aa2\u6e2c\u53ef\u7591\u6d3b\u52d5\u4e26\u5c01\u9396\u653b\u64ca\u8005\u7684 IP \u5730\u5740\u3002<\/p>\n<pre><code>sudo apt-get install fail2ban<\/code><\/pre>\n<p>\u5b89\u88dd\u5f8c\uff0c\u60a8\u53ef\u4ee5\u914d\u7f6e <code>\/etc\/fail2ban\/jail.local<\/code> \u6587\u4ef6\u4f86\u8a2d\u7f6e\u76e3\u63a7\u898f\u5247\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-xpwAWlWHcI\">\u7d50\u8ad6<\/h2>\n<p>\u8a2d\u7f6e DDoS \u4fdd\u8b77\u6a5f\u5236\u662f\u4fdd\u8b77 Linux \u4f3a\u670d\u5668\u5b89\u5168\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528\u9632\u706b\u7246\u3001\u9650\u5236\u9023\u63a5\u901f\u7387\u3001\u8003\u616e\u6d41\u91cf\u6e05\u6d17\u670d\u52d9\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11 DDoS \u653b\u64ca\u5c0d\u4f3a\u670d\u5668\u7684\u5f71\u97ff\u3002\u96a8\u8457\u7db2\u7d61\u5a01\u8105\u7684\u65e5\u76ca\u589e\u52a0\uff0c\u6301\u7e8c\u66f4\u65b0\u548c\u52a0\u5f37\u5b89\u5168\u7b56\u7565\u662f\u6bcf\u500b\u4f3a\u670d\u5668\u7ba1\u7406\u54e1\u7684\u8cac\u4efb\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c\u4f3a\u670d\u5668\u5b89\u5168\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\uff0c\u5b78\u7fd2\u5982\u4f55\u8a2d\u7f6e DDoS \u4fdd\u8b77\u6a5f\u5236\uff0c\u589e\u5f37\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u5b89\u5168\u6027\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-44510","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44510","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=44510"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44510\/revisions"}],"predecessor-version":[{"id":44511,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44510\/revisions\/44511"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}