{"id":23652,"date":"2025-04-19T08:22:50","date_gmt":"2025-04-19T00:22:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/23652.html"},"modified":"2025-04-19T08:22:50","modified_gmt":"2025-04-19T00:22:50","slug":"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%98%af%e5%90%a6%e8%a2%abddos%e6%94%bb%e5%87%bb%ef%bc%9f-ddos%e6%94%bb%e5%87%bb%e7%9a%84%e9%98%b2%e5%be%a1%e5%92%8c%e5%ba%94%e5%af%b9","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/23652.html","title":{"rendered":"\u5982\u4f55\u5224\u65ad\u670d\u52a1\u5668\u662f\u5426\u88abDDOS\u653b\u51fb\uff1f DDOS\u653b\u51fb\u7684\u9632\u5fa1\u548c\u5e94\u5bf9\u529e\u6cd5"},"content":{"rendered":"<h4>\u5982\u4f55\u5224\u65ad\u670d\u52a1\u5668\u662f\u5426\u88abDDoS\u653b\u51fb&#xff1f;<\/h4>\n<h5>\u200b1. \u89c2\u5bdf\u670d\u52a1\u5668\u6027\u80fd\u5f02\u5e38<\/h5>\n<ul>\n<li>\u200b\u5e26\u5bbd\u9971\u548c&#xff1a; \u670d\u52a1\u5668\u5e26\u5bbd\u7a81\u7136\u8fbe\u5230\u6216\u63a5\u8fd1\u4e0a\u9650&#xff08;\u901a\u8fc7iftop\u3001nload\u7b49\u5de5\u5177\u67e5\u770b&#xff09;&#xff0c;\u4f46\u6d41\u91cf\u6765\u6e90\u5f02\u5e38&#xff08;\u5982\u5927\u91cf\u6765\u81ea\u540c\u4e00\u56fd\u5bb6\/\u5730\u533a\u7684IP&#xff09;\u3002<\/li>\n<li>\u200b\u8fde\u63a5\u6570\u6fc0\u589e&#xff1a;\n<ul>\n<li>\u67e5\u770b\u5f53\u524d\u8fde\u63a5\u6570&#xff1a;netstat -anp | grep ESTABLISHED | wc -l<\/li>\n<li>\u82e5\u8fde\u63a5\u6570\u8fdc\u8d85\u6b63\u5e38\u6c34\u5e73&#xff08;\u5982\u6bcf\u79d2\u6570\u5343\u6b21&#xff09;&#xff0c;\u53ef\u80fd\u662f\u653b\u51fb\u6d41\u91cf\u6d8c\u5165\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u200b\u54cd\u5e94\u53d8\u6162\u6216\u8d85\u65f6&#xff1a; \u6b63\u5e38\u7528\u6237\u53cd\u9988\u8bbf\u95ee\u5ef6\u8fdf\u5347\u9ad8\u6216\u65e0\u6cd5\u8bbf\u95ee&#xff0c;\u4f46\u670d\u52a1\u5668\u8d44\u6e90&#xff08;CPU\u3001\u5185\u5b58&#xff09;\u5360\u7528\u7387\u6b63\u5e38\u3002<\/li>\n<\/ul>\n<h5>\u200b2. \u68c0\u67e5\u5f02\u5e38\u6d41\u91cf\u7279\u5f81<\/h5>\n<ul>\n<li>\u200b\u6d41\u91cf\u7c7b\u578b\u5206\u6790&#xff1a;\n<ul>\n<li>\u4f7f\u7528tcpdump\u6293\u5305\u5206\u6790\u6d41\u91cf&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p> tcpdump -i eth0 -nn -s 0 -c 1000 &#039;port 80&#039; <\/li>\n<li>\u89c2\u5bdf\u662f\u5426\u5b58\u5728\u5927\u91cf\u91cd\u590d\u8bf7\u6c42\u3001\u5f02\u5e38\u534f\u8bae&#xff08;\u5982\u5927\u91cfUDP\u5305&#xff09;\u6216\u4f2a\u9020\u6e90IP\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u200b\u7aef\u53e3\u626b\u63cf\u75d5\u8ff9&#xff1a; \u68c0\u67e5\u65e5\u5fd7\u4e2d\u662f\u5426\u6709\u5bf9\u975e\u4e1a\u52a1\u7aef\u53e3\u7684\u9891\u7e41\u8bbf\u95ee&#xff08;\u5982\u5927\u91cf\u5c1d\u8bd5\u8fde\u63a5\u6570\u636e\u5e93\u7aef\u53e33306&#xff09;\u3002<\/li>\n<\/ul>\n<h5>\u200b3. \u65e5\u5fd7\u5206\u6790<\/h5>\n<ul>\n<li>\u200bWeb\u670d\u52a1\u5668\u65e5\u5fd7&#xff1a;\n<ul>\n<li>\u67e5\u770bNginx\/Apache\u8bbf\u95ee\u65e5\u5fd7&#xff0c;\u8fc7\u6ee4\u9ad8\u9891IP&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p> awk &#039;{print $1}&#039; access.log | sort | uniq -c | sort -nr | head -n 20 <\/li>\n<li>\u82e5\u53d1\u73b0\u5355\u4e2aIP\u77ed\u65f6\u95f4\u5185\u53d1\u8d77\u6570\u4e07\u6b21\u8bf7\u6c42&#xff0c;\u53ef\u80fd\u662f\u653b\u51fb\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u200b\u9519\u8bef\u65e5\u5fd7&#xff1a; \u68c0\u67e5\u662f\u5426\u6709\u5927\u91cf5xx\u9519\u8bef\u6216\u8d85\u65f6\u8bb0\u5f55&#xff08;\u5982\u6570\u636e\u5e93\u8fde\u63a5\u5931\u8d25&#xff09;\u3002<\/li>\n<\/ul>\n<h5>\u200b4. \u4f7f\u7528\u76d1\u63a7\u5de5\u5177<\/h5>\n<ul>\n<li>\u200b\u4e91\u670d\u52a1\u5546\u76d1\u63a7&#xff1a; \u4e0a\u6d77\u4e91\u76fe\u3001\u963f\u91cc\u4e91\u3001AWS\u7b49\u63a7\u5236\u53f0\u7684\u6d41\u91cf\u76d1\u63a7\u9762\u677f&#xff0c;\u89c2\u5bdf\u6d41\u91cf\u7a81\u589e\u65f6\u95f4\u53ca\u5cf0\u503c\u3002<\/li>\n<li>\u200b\u5b89\u5168\u5de5\u5177\u68c0\u6d4b&#xff1a; \u4f7f\u7528Fail2Ban\u3001Cloudflare\u7b49\u5de5\u5177\u81ea\u52a8\u8bc6\u522b\u653b\u51fb\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<hr \/>\n<h4>\u200bDDoS\u653b\u51fb\u7684\u9632\u5fa1\u4e0e\u5e94\u5bf9\u529e\u6cd5<\/h4>\n<h5>\u200b\u4e00\u3001\u57fa\u7840\u8bbe\u65bd\u7ea7\u9632\u5fa1<\/h5>\n<li>\n<p>\u200b\u6269\u5bb9\u5e26\u5bbd<\/p>\n<ul>\n<li>\u4e34\u65f6\u589e\u52a0\u670d\u52a1\u5668\u5e26\u5bbd&#xff0c;\u7f13\u89e3\u4e2d\u5c0f\u578b\u653b\u51fb&#xff08;10Gbps\u4ee5\u5185&#xff09;\u3002<\/li>\n<li>\u6ce8\u610f&#xff1a;\u9700\u63d0\u524d\u4e0eISP&#xff08;\u7f51\u7edc\u670d\u52a1\u5546&#xff09;\u534f\u5546\u5f39\u6027\u6269\u5bb9\u80fd\u529b\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u90e8\u7f72\u9ad8\u9632CDN&#xff08;\u6bd4\u5982\u4e0a\u6d77\u4e91\u76fe&#xff09;<\/p>\n<ul>\n<li>\u200b\u539f\u7406&#xff1a;\u901a\u8fc7\u8fb9\u7f18\u8282\u70b9\u5206\u6563\u653b\u51fb\u6d41\u91cf&#xff0c;\u6e05\u6d17\u6076\u610f\u8bf7\u6c42\u540e\u518d\u56de\u6e90\u3002<\/li>\n<li>\u200b\u64cd\u4f5c\u6b65\u9aa4&#xff1a;\n<ul>\n<li>\u5c06\u57df\u540d\u89e3\u6790\u81f3\u9ad8\u9632CDN&#xff0c;\u5173\u95ed\u6e90\u7ad9IP\u66b4\u9732\u3002<\/li>\n<li>\u914d\u7f6e\u9632\u62a4\u89c4\u5219&#xff08;\u5982CC\u653b\u51fb\u9608\u503c\u3001IP\u9ed1\u767d\u540d\u5355&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u914d\u7f6e\u9632\u706b\u5899\u4e0eACL<\/p>\n<ul>\n<li>\u200biptables\u9650\u901f&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p> iptables -A INPUT -p tcp &#8211;dport 80 -m limit &#8211;limit 50\/minute -j ACCEPT<br \/>\niptables -A INPUT -p tcp &#8211;dport 80 -j DROP <\/li>\n<li>\u200b\u4e91\u670d\u52a1\u5546\u5b89\u5168\u7ec4&#xff1a; \u9650\u5236\u5165\u7ad9\u6d41\u91cf\u4ec5\u5141\u8bb8\u53ef\u4fe1IP\u6bb5&#xff08;\u5982\u529e\u516c\u7f51\u7edc\u3001CDN\u8282\u70b9&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u542f\u7528\u8d1f\u8f7d\u5747\u8861<\/p>\n<ul>\n<li>\u5206\u53d1\u6d41\u91cf\u81f3\u591a\u53f0\u670d\u52a1\u5668&#xff0c;\u907f\u514d\u5355\u70b9\u8fc7\u8f7d\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h5>\u200b\u4e8c\u3001\u5e94\u7528\u5c42\u9632\u5fa1<\/h5>\n<li>\n<p>\u200bWeb\u5e94\u7528\u9632\u706b\u5899&#xff08;WAF&#xff09;\u200b<\/p>\n<ul>\n<li>\u200b\u529f\u80fd&#xff1a;\u62e6\u622aSQL\u6ce8\u5165\u3001XSS\u3001CC\u653b\u51fb\u7b49\u5e94\u7528\u5c42\u5a01\u80c1\u3002<\/li>\n<li>\u200b\u914d\u7f6e\u793a\u4f8b&#xff1a;\n<ul>\n<li>\u4e0a\u6d77\u4e91\u76feWAF&#xff1a;\u5f00\u542fOWASP Top 10\u89c4\u5219&#xff0c;\u8bbe\u7f6eAPI\u8bf7\u6c42\u9891\u7387\u9650\u5236&#xff08;\u5982\u5355IP\u6bcf\u79d2\u6700\u591a50\u6b21&#xff09;\u3002<\/li>\n<li>Cloudflare&#xff1a;\u542f\u7528Bot Management&#xff0c;\u963b\u6b62\u81ea\u52a8\u5316\u811a\u672c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u52a8\u6001\u9650\u901f\u4e0e\u9a8c\u8bc1\u7801<\/p>\n<ul>\n<li>\u5bf9\u9ad8\u9891\u8bf7\u6c42IP\u89e6\u53d1\u6ed1\u5757\u9a8c\u8bc1\u6216\u56fe\u5f62\u9a8c\u8bc1\u7801&#xff08;\u5982Google reCAPTCHA&#xff09;\u3002<\/li>\n<li>\u793a\u4f8b\u4ee3\u7801&#xff08;Nginx\u9650\u901f&#xff09;&#xff1a;\n<p>nginx<\/p>\n<p>\u590d\u5236<\/p>\n<p> limit_req_zone $binary_remote_addr zone&#061;api_limit:10m rate&#061;10r\/s;<br \/>\nlocation \/api {<br \/>\n    limit_req zone&#061;api_limit burst&#061;20;<br \/>\n    proxy_pass http:\/\/backend;<br \/>\n} <\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u534f\u8bae\u4f18\u5316\u4e0e\u7f13\u5b58<\/p>\n<ul>\n<li>\u200b\u9759\u6001\u8d44\u6e90\u7f13\u5b58&#xff1a;\u901a\u8fc7CDN\u7f13\u5b58\u56fe\u7247\u3001JS\/CSS\u6587\u4ef6&#xff0c;\u51cf\u5c11\u6e90\u7ad9\u538b\u529b\u3002<\/li>\n<li>\u200b\u534f\u8bae\u964d\u7ea7\u9632\u5fa1&#xff1a;\u7981\u7528\u4e0d\u5fc5\u8981\u7684\u534f\u8bae&#xff08;\u5982\u5173\u95edIPv6\u82e5\u672a\u4f7f\u7528&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h5>\u200b\u4e09\u3001\u4e91\u670d\u52a1\u5546\u4e13\u9879\u9632\u62a4<\/h5>\n<li>\n<p>\u200b\u542f\u7528\u9ad8\u9632IP\/\u9ad8\u9632CDN<\/p>\n<ul>\n<li>\u200b\u4e0a\u6d77\u4e91\u76fe&#xff1a;\u652f\u6301T\u7ea7DDoS\u6e05\u6d17&#xff0c;\u81ea\u52a8\u5207\u6362\u653b\u51fb\u6d41\u91cf\u81f3\u6e05\u6d17\u4e2d\u5fc3&#xff0c;\u7ed3\u5408CDN\u52a0\u901f\u4e0e\u6297D\u80fd\u529b&#xff0c;\u4e00\u952e\u5f00\u542f\u9632\u62a4\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200bAnycast\u7f51\u7edc\u8c03\u5ea6<\/p>\n<ul>\n<li>\u5229\u7528\u5168\u7403\u8282\u70b9\u5206\u6563\u653b\u51fb\u6d41\u91cf&#xff08;\u5982Cloudflare\u7684Anycast\u7f51\u7edc&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u6d41\u91cf\u6e05\u6d17\u4e0e\u9ed1\u6d1e\u8def\u7531<\/p>\n<ul>\n<li>\u200b\u9ed1\u6d1e\u8def\u7531&#xff1a;\u5f53\u653b\u51fb\u8d85\u8fc7\u9608\u503c\u65f6&#xff0c;\u4e3b\u52a8\u4e22\u5f03\u5168\u90e8\u6d41\u91cf\u4ee5\u4fdd\u62a4\u670d\u52a1\u5668\u3002<\/li>\n<li>\u200b\u534f\u540c\u9632\u5fa1&#xff1a;\u4e0eISP\u5408\u4f5c&#xff0c;\u5728\u9aa8\u5e72\u7f51\u5c42\u9762\u5c4f\u853d\u653b\u51fb\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h5>\u200b\u56db\u3001\u5e94\u6025\u54cd\u5e94\u6d41\u7a0b<\/h5>\n<li>\n<p>\u200b\u521d\u6b65\u9694\u79bb<\/p>\n<ul>\n<li>\u5c06\u53d7\u653b\u51fb\u670d\u52a1\u5668\u4ece\u516c\u7f51\u6682\u65f6\u4e0b\u7ebf&#xff0c;\u5207\u6362\u81f3\u5907\u7528\u670d\u52a1\u5668\u3002<\/li>\n<li>\u542f\u7528\u5907\u7528IP\u6216\u542f\u7528\u4e91\u670d\u52a1\u5546\u7684\u201c\u5e94\u6025\u9632\u62a4\u6a21\u5f0f\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u200b\u6eaf\u6e90\u4e0e\u5c01\u7981<\/p>\n<ul>\n<li>\u901a\u8fc7\u6d41\u91cf\u5206\u6790\u5de5\u5177&#xff08;\u5982Wireshark&#xff09;\u5b9a\u4f4d\u653b\u51fb\u6e90IP\u6bb5&#xff0c;\u63d0\u4ea4ISP\u5c01\u7981\u3002<\/li>\n<li>\u793a\u4f8b\u547d\u4ee4&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p> # \u4f7f\u7528tshark\u7edf\u8ba1\u9ad8\u9891\u653b\u51fbIP<br \/>\ntshark -r attack.pcap -T fields -e ip.src | sort | uniq -c | sort -nr 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