{"id":44424,"date":"2024-10-06T15:31:15","date_gmt":"2024-10-06T07:31:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44424\/"},"modified":"2024-10-06T15:31:15","modified_gmt":"2024-10-06T07:31:15","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%9addos-%e4%bf%9d%e8%ad%b7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44424\/","title":{"rendered":"Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1aDDoS \u4fdd\u8b77"},"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%9addos-%e4%bf%9d%e8%ad%b7-GhyDNEypQh\">Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1aDDoS \u4fdd\u8b77<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u5206\u6563\u5f0f\u62d2\u7d55\u670d\u52d9\u653b\u64ca\uff08DDoS\uff09\u5df2\u6210\u70ba\u7db2\u7d61\u5b89\u5168\u7684\u4e00\u5927\u5a01\u8105\u3002\u9019\u985e\u653b\u64ca\u901a\u904e\u5927\u91cf\u7684\u6d41\u91cf\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\u5be6\u65bd\u6709\u6548\u7684 DDoS \u4fdd\u8b77\u7b56\u7565\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u6709\u6548\u7684 Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\uff0c\u4ee5\u9632\u7bc4 DDoS \u653b\u64ca\u3002<\/p>\n<h2 id=\"ddos-%e6%94%bb%e6%93%8a%e7%9a%84%e9%a1%9e%e5%9e%8b-GhyDNEypQh\">DDoS \u653b\u64ca\u7684\u985e\u578b<\/h2>\n<p>\u5728\u6df1\u5165\u9632\u8b77\u7b56\u7565\u4e4b\u524d\uff0c\u4e86\u89e3 DDoS \u653b\u64ca\u7684\u985e\u578b\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4e3b\u8981\u7684 DDoS \u653b\u64ca\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6d41\u91cf\u653b\u64ca\uff1a<\/strong>\u9019\u985e\u653b\u64ca\u901a\u904e\u5927\u91cf\u7684\u6d41\u91cf\u4f86\u6d88\u8017\u4f3a\u670d\u5668\u7684\u5e36\u5bec\u3002<\/li>\n<li><strong>\u5354\u8b70\u653b\u64ca\uff1a<\/strong>\u9019\u985e\u653b\u64ca\u5229\u7528\u7db2\u7d61\u5354\u8b70\u7684\u6f0f\u6d1e\uff0c\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\u901a\u904e\u767c\u9001\u5927\u91cf\u8acb\u6c42\u4f86\u4f7f\u5176\u5d29\u6f70\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9c%89%e6%95%88%e7%9a%84-ddos-%e9%98%b2%e8%ad%b7%e7%ad%96%e7%95%a5-GhyDNEypQh\">\u6709\u6548\u7684 DDoS \u9632\u8b77\u7b56\u7565<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%98%b2%e7%81%ab%e7%89%86-GhyDNEypQh\">1. \u4f7f\u7528\u9632\u706b\u7246<\/h3>\n<p>\u9632\u706b\u7246\u662f\u4fdd\u8b77\u4f3a\u670d\u5668\u7684\u7b2c\u4e00\u9053\u9632\u7dda\u3002Linux \u7cfb\u7d71\u4e2d\u53ef\u4ee5\u4f7f\u7528 iptables \u4f86\u8a2d\u7f6e\u9632\u706b\u7246\u898f\u5247\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%e6%95%b8-GhyDNEypQh\">2. \u9650\u5236\u9023\u63a5\u6578<\/h3>\n<p>\u901a\u904e\u9650\u5236\u6bcf\u500b IP \u5730\u5740\u7684\u9023\u63a5\u6578\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11 DDoS \u653b\u64ca\u7684\u5f71\u97ff\u3002\u53ef\u4ee5\u4f7f\u7528 iptables \u7684 connlimit \u6a21\u584a\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>iptables -A INPUT -p tcp --dport 80 -m connlimit --connlimit-above 10 -j REJECT<\/code><\/pre>\n<p>\u9019\u689d\u898f\u5247\u9650\u5236\u6bcf\u500b IP \u5730\u5740\u540c\u6642\u9023\u63a5\u5230 80 \u7aef\u53e3\u7684\u6578\u91cf\u4e0d\u8d85\u904e 10\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-GhyDNEypQh\">3. \u4f7f\u7528\u6d41\u91cf\u6e05\u6d17\u670d\u52d9<\/h3>\n<p>\u6d41\u91cf\u6e05\u6d17\u670d\u52d9\u53ef\u4ee5\u5728\u653b\u64ca\u767c\u751f\u6642\u904e\u6ffe\u6389\u60e1\u610f\u6d41\u91cf\uff0c\u50c5\u5141\u8a31\u5408\u6cd5\u6d41\u91cf\u9032\u5165\u4f3a\u670d\u5668\u3002\u9019\u4e9b\u670d\u52d9\u901a\u5e38\u7531\u5c08\u696d\u7684\u5b89\u5168\u516c\u53f8\u63d0\u4f9b\uff0c\u80fd\u5920\u6709\u6548\u5730\u6e1b\u5c11 DDoS \u653b\u64ca\u7684\u5f71\u97ff\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-GhyDNEypQh\">4. \u76e3\u63a7\u548c\u65e5\u8a8c\u5206\u6790<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7\u4f3a\u670d\u5668\u7684\u6d41\u91cf\u548c\u65e5\u8a8c\u53ef\u4ee5\u5e6b\u52a9\u53ca\u65e9\u767c\u73fe\u7570\u5e38\u6d3b\u52d5\u3002\u4f7f\u7528\u5de5\u5177\u5982 <code>iftop<\/code> \u548c <code>netstat<\/code> \u53ef\u4ee5\u5be6\u6642\u76e3\u63a7\u6d41\u91cf\u60c5\u6cc1\uff0c\u4e26\u53ca\u6642\u505a\u51fa\u53cd\u61c9\u3002<\/p>\n<pre><code>iftop -i eth0<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u986f\u793a eth0 \u63a5\u53e3\u7684\u5be6\u6642\u6d41\u91cf\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-GhyDNEypQh\">\u7d50\u8ad6<\/h2>\n<p>\u96a8\u8457 DDoS \u653b\u64ca\u7684\u65e5\u76ca\u589e\u9577\uff0cLinux \u4f3a\u670d\u5668\u7684\u5b89\u5168\u7b56\u7565\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u901a\u904e\u5be6\u65bd\u9632\u706b\u7246\u3001\u9650\u5236\u9023\u63a5\u6578\u3001\u4f7f\u7528\u6d41\u91cf\u6e05\u6d17\u670d\u52d9\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\uff0c\u4f01\u696d\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11 DDoS \u653b\u64ca\u7684\u98a8\u96aa\u3002\u9019\u4e9b\u7b56\u7565\u4e0d\u50c5\u80fd\u4fdd\u8b77\u4f3a\u670d\u5668\u7684\u5b89\u5168\uff0c\u9084\u80fd\u78ba\u4fdd\u696d\u52d9\u7684\u7a69\u5b9a\u904b\u884c\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\u6709\u6548\u7684 Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff0c\u5b78\u7fd2\u5982\u4f55\u9632\u7bc4 DDoS \u653b\u64ca\uff0c\u4fdd\u8b77\u60a8\u7684\u4f3a\u670d\u5668\u514d\u53d7\u5a01\u8105\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-44424","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44424","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=44424"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44424\/revisions"}],"predecessor-version":[{"id":44425,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44424\/revisions\/44425"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}