{"id":61720,"date":"2025-04-29T10:06:00","date_gmt":"2025-04-29T02:06:00","guid":{"rendered":"https:\/\/fwq.ai\/blog\/61720\/"},"modified":"2025-04-29T10:06:00","modified_gmt":"2025-04-29T02:06:00","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8linux%e4%b8%8a%e8%ae%be%e7%bd%ae%e9%98%b2%e5%be%a1ddos%e6%94%bb%e5%87%bb-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/61720\/","title":{"rendered":"\u5982\u4f55\u5728Linux\u4e0a\u8bbe\u7f6e\u9632\u5fa1DDoS\u653b\u51fb"},"content":{"rendered":"<p>\u5982\u4f55\u5728linux\u4e0a\u8bbe\u7f6e\u9632\u5fa1ddos\u653b\u51fb<\/p>\n<p>\u968f\u7740\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\uff0c\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\u4e5f\u65e5\u76ca\u589e\u52a0\u3002\u5176\u4e2d\u4e00\u79cd\u5e38\u89c1\u7684\u653b\u51fb\u65b9\u5f0f\u662f\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\uff08DDoS\uff09\u653b\u51fb\u3002DDoS\u653b\u51fb\u65e8\u5728\u901a\u8fc7\u8d85\u8f7d\u76ee\u6807\u7f51\u7edc\u6216\u670d\u52a1\u5668\u6765\u4f7f\u5176\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002\u5728Linux\u4e0a\uff0c\u6211\u4eec\u53ef\u4ee5\u91c7\u53d6\u4e00\u4e9b\u63aa\u65bd\u6765\u9632\u5fa1\u8fd9\u79cd\u653b\u51fb\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684\u9632\u5fa1\u7b56\u7565\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<ol>\n<li>\u9650\u5236\u8fde\u63a5\u901f\u5ea6<br \/>DDoS\u653b\u51fb\u901a\u5e38\u503e\u5411\u4e8e\u901a\u8fc7\u5927\u91cf\u7684\u8fde\u63a5\u8bf7\u6c42\u6765\u8017\u5c3d\u7cfb\u7edf\u8d44\u6e90\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528iptables\u5de5\u5177\u6765\u9650\u5236\u5355\u4e2aIP\u5730\u5740\u7684\u8fde\u63a5\u901f\u5ea6\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c06\u5141\u8bb8\u6bcf\u79d2\u949f\u6700\u591a10\u4e2a\u65b0\u8fde\u63a5\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u901f\u5ea6\u7684\u8fde\u63a5\u5c06\u88ab\u4e22\u5f03\u3002<\/li>\n<\/ol>\n<pre>iptables -A INPUT -p tcp --syn -m limit --limit 10\/s --limit-burst 20 -j ACCEPT\niptables -A INPUT -p tcp --syn -j DROP<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4f7f\u7528SYN cookies<br \/>DDoS\u653b\u51fb\u4e2d\u7684SYN\u6d2a\u6cdb\u653b\u51fb\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u5f0f\uff0c\u5b83\u5229\u7528TCP\u4e09\u6b21\u63e1\u624b\u534f\u8bae\u4e2d\u7684\u6f0f\u6d1e\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\u3002Linux\u5185\u6838\u63d0\u4f9b\u4e86SYN cookies\u673a\u5236\u6765\u9632\u5fa1\u8fd9\u79cd\u653b\u51fb\u3002\u542f\u7528SYN cookies\u540e\uff0c\u670d\u52a1\u5668\u5728\u5904\u7406\u8fde\u63a5\u8bf7\u6c42\u65f6\u4e0d\u4f1a\u6d88\u8017\u592a\u591a\u8d44\u6e90\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u4e86\u5982\u4f55\u542f\u7528SYN cookies\u3002<\/li>\n<\/ol>\n<pre>echo 1 &amp;gt; \/proc\/sys\/net\/ipv4\/tcp_syncookies<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u52a0\u56fa\u64cd\u4f5c\u7cfb\u7edf<br \/>\u4e3a\u4e86\u9632\u5fa1DDoS\u653b\u51fb\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fdd\u64cd\u4f5c\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002\u5305\u62ec\u66f4\u65b0\u64cd\u4f5c\u7cfb\u7edf\u548c\u5b89\u88c5\u6700\u65b0\u7684\u5b89\u5168\u8865\u4e01\u3001\u7981\u7528\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\u548c\u7aef\u53e3\u3001\u914d\u7f6e\u6587\u4ef6\u7cfb\u7edf\u4fdd\u62a4\u7b49\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u7981\u7528\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\u3002<\/li>\n<\/ol>\n<pre># \u505c\u6b62\u670d\u52a1\nservice &lt;service_name&gt; stop\n# \u7981\u6b62\u670d\u52a1\u5f00\u673a\u81ea\u542f\nchkconfig &lt;service_name&gt; off&lt;\/service_name&gt;&lt;\/service_name&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4f7f\u7528\u9632\u706b\u5899<br \/>\u9632\u706b\u5899\u662f\u6211\u4eec\u7cfb\u7edf\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\uff0c\u53ef\u4ee5\u9650\u5236\u5916\u90e8\u8bbf\u95ee\uff0c\u5e76\u8fc7\u6ee4\u6076\u610f\u6d41\u91cf\u3002\u5728Linux\u4e0a\uff0ciptables\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u9632\u706b\u5899\u5de5\u5177\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u914d\u7f6eiptables\u6765\u963b\u6b62\u7279\u5b9aIP\u5730\u5740\u7684\u8bbf\u95ee\u3002<\/li>\n<\/ol>\n<pre>iptables -A INPUT -s &lt;ip_address&gt; -j DROP&lt;\/ip_address&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4f7f\u7528\u53cd\u5411\u4ee3\u7406<br \/>\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5206\u6563\u6d41\u91cf\uff0c\u5c06\u6d41\u91cf\u5f15\u5bfc\u5230\u591a\u4e2a\u670d\u52a1\u5668\u4e0a\uff0c\u4ece\u800c\u51cf\u8f7b\u5355\u4e2a\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u3002\u5e38\u89c1\u7684\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5305\u62ecNginx\u548cHAProxy\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528Nginx\u8fdb\u884c\u53cd\u5411\u4ee3\u7406\u914d\u7f6e\u3002<\/li>\n<\/ol>\n<pre>http {\n  ...\n  upstream backend {\n    server backend1.example.com;\n    server backend2.example.com;\n    server backend3.example.com;\n  }\n\n  server {\n    listen 80;\n    location \/ {\n      proxy_pass http:\/\/backend;\n    }\n  }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u603b\u7ed3<br \/>\u901a\u8fc7\u9650\u5236\u8fde\u63a5\u901f\u5ea6\u3001\u4f7f\u7528SYN cookies\u3001\u52a0\u56fa\u64cd\u4f5c\u7cfb\u7edf\u3001\u4f7f\u7528\u9632\u706b\u5899\u4ee5\u53ca\u4f7f\u7528\u53cd\u5411\u4ee3\u7406\u7b49\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Linux\u7cfb\u7edf\u4e0a\u6709\u6548\u5730\u9632\u5fa1DDoS\u653b\u51fb\u3002\u7136\u800c\uff0c\u5355\u4e00\u7684\u9632\u5fa1\u63aa\u65bd\u5e76\u4e0d\u80fd\u5b8c\u5168\u89e3\u51b3\u6b64\u7c7b\u653b\u51fb\uff0c\u56e0\u6b64\u5efa\u8bae\u91c7\u53d6\u591a\u79cd\u7b56\u7565\u7ed3\u5408\u7684\u65b9\u6cd5\u6765\u63d0\u9ad8\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5728Linux\u4e0a\u8bbe\u7f6e\u9632\u5fa1DDoS\u653b\u51fb\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5728linux\u4e0a\u8bbe\u7f6e\u9632\u5fa1ddos\u653b\u51fb \u968f\u7740\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\uff0c\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\u4e5f\u65e5\u76ca\u589e\u52a0\u3002\u5176\u4e2d\u4e00\u79cd\u5e38\u89c1\u7684\u653b\u51fb\u65b9\u5f0f\u662f\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\uff08DDoS\uff09\u653b\u51fb\u3002DDoS\u653b\u51fb\u65e8\u5728\u901a\u8fc7\u8d85\u8f7d\u76ee\u6807\u7f51\u7edc\u6216\u670d\u52a1\u5668\u6765\u4f7f\u5176\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002\u5728Linux\u4e0a\uff0c\u6211\u4eec\u53ef\u4ee5\u91c7\u53d6\u4e00\u4e9b\u63aa\u65bd\u6765\u9632\u5fa1\u8fd9\u79cd\u653b\u51fb\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684\u9632\u5fa1\u7b56\u7565\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u9650\u5236\u8fde\u63a5\u901f\u5ea6DDoS\u653b\u51fb\u901a\u5e38\u503e\u5411\u4e8e\u901a\u8fc7\u5927\u91cf\u7684\u8fde\u63a5\u8bf7\u6c42\u6765\u8017\u5c3d\u7cfb\u7edf\u8d44\u6e90\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528iptables\u5de5\u5177\u6765\u9650\u5236\u5355\u4e2aIP\u5730\u5740\u7684\u8fde\u63a5\u901f\u5ea6\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c06\u5141\u8bb8\u6bcf\u79d2\u949f\u6700\u591a10\u4e2a\u65b0\u8fde\u63a5\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u901f\u5ea6\u7684\u8fde\u63a5\u5c06\u88ab\u4e22\u5f03\u3002 iptables -A INPUT -p tcp &#8211;syn -m limit &#8211;limit 10\/s &#8211;limit-burst 20 -j ACCEPT iptables -A INPUT -p tcp &#8211;syn -j DROP \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528SYN cookiesDDoS\u653b\u51fb\u4e2d\u7684SYN\u6d2a\u6cdb\u653b\u51fb\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u5f0f\uff0c\u5b83\u5229\u7528TCP\u4e09\u6b21\u63e1\u624b\u534f\u8bae\u4e2d\u7684\u6f0f\u6d1e\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\u3002Linux\u5185\u6838\u63d0\u4f9b\u4e86SYN cookies\u673a\u5236\u6765\u9632\u5fa1\u8fd9\u79cd\u653b\u51fb\u3002\u542f\u7528SYN cookies\u540e\uff0c\u670d\u52a1\u5668\u5728\u5904\u7406\u8fde\u63a5\u8bf7\u6c42\u65f6\u4e0d\u4f1a\u6d88\u8017\u592a\u591a\u8d44\u6e90\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u4e86\u5982\u4f55\u542f\u7528SYN cookies\u3002 echo 1 &amp;gt; \/proc\/sys\/net\/ipv4\/tcp_syncookies \u767b\u5f55\u540e\u590d\u5236 \u52a0\u56fa\u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4e86\u9632\u5fa1DDoS\u653b\u51fb\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fdd\u64cd\u4f5c\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002\u5305\u62ec\u66f4\u65b0\u64cd\u4f5c\u7cfb\u7edf\u548c\u5b89\u88c5\u6700\u65b0\u7684\u5b89\u5168\u8865\u4e01\u3001\u7981\u7528\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\u548c\u7aef\u53e3\u3001\u914d\u7f6e\u6587\u4ef6\u7cfb\u7edf\u4fdd\u62a4\u7b49\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u7981\u7528\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\u3002 # \u505c\u6b62\u670d\u52a1 service &lt;service_name&gt; stop # \u7981\u6b62\u670d\u52a1\u5f00\u673a\u81ea\u542f chkconfig &lt;service_name&gt; off&lt;\/service_name&gt;&lt;\/service_name&gt; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u9632\u706b\u5899\u9632\u706b\u5899\u662f\u6211\u4eec\u7cfb\u7edf\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\uff0c\u53ef\u4ee5\u9650\u5236\u5916\u90e8\u8bbf\u95ee\uff0c\u5e76\u8fc7\u6ee4\u6076\u610f\u6d41\u91cf\u3002\u5728Linux\u4e0a\uff0ciptables\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u9632\u706b\u5899\u5de5\u5177\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u914d\u7f6eiptables\u6765\u963b\u6b62\u7279\u5b9aIP\u5730\u5740\u7684\u8bbf\u95ee\u3002 iptables -A INPUT -s &lt;ip_address&gt; -j [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-61720","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/61720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=61720"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/61720\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=61720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=61720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=61720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}