{"id":46964,"date":"2025-07-30T05:01:34","date_gmt":"2025-07-29T21:01:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/46964.html"},"modified":"2025-07-30T05:01:34","modified_gmt":"2025-07-29T21:01:34","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae%e9%98%b2%e7%81%ab%e5%a2%99%e8%a7%84%e5%88%99%e4%bb%a5%e9%98%bb%e6%ad%a2%e6%81%b6%e6%84%8f%e6%b5%81%e9%87%8f%e5%92%8cddos%e6%94%bb","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/46964.html","title":{"rendered":"\u670d\u52a1\u5668\u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\u4ee5\u963b\u6b62\u6076\u610f\u6d41\u91cf\u548cDDoS\u653b\u51fb\uff1f"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729210133-688936ad5c5f7.jpg\" \/><\/p>\n<p>\u9632\u706b\u5899\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u6076\u610f\u6d41\u91cf\u548c DDoS \u653b\u51fb\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u3002\u901a\u8fc7\u5408\u7406\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219&#xff0c;\u53ef\u4ee5\u6709\u6548\u963b\u6b62\u6076\u610f\u8bbf\u95ee\u3001\u9650\u5236\u4e0d\u5fc5\u8981\u7684\u6d41\u91cf&#xff0c;\u5e76\u51cf\u5c11\u653b\u51fb\u5bf9\u670d\u52a1\u5668\u7684\u5f71\u54cd\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\u7684\u5168\u9762\u6307\u5357&#xff0c;\u5305\u62ec\u57fa\u7840\u89c4\u5219\u8bbe\u7f6e\u3001\u9632\u5fa1 DDoS \u653b\u51fb\u7684\u9ad8\u7ea7\u7b56\u7565\u548c\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<hr \/>\n<h3>1. \u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\u7684\u57fa\u7840\u65b9\u6cd5<\/h3>\n<p>\u5927\u591a\u6570\u670d\u52a1\u5668\u4f7f\u7528\u4ee5\u4e0b\u9632\u706b\u5899\u5de5\u5177\u4e4b\u4e00&#xff1a;<\/p>\n<ul>\n<li>UFW&#xff08;Uncomplicated Firewall&#xff09;&#xff1a;\u9002\u7528\u4e8e Ubuntu \u7b49\u7cfb\u7edf&#xff0c;\u7b80\u5355\u6613\u7528\u3002<\/li>\n<li>iptables&#xff1a;\u529f\u80fd\u5f3a\u5927&#xff0c;\u9002\u7528\u4e8e\u66f4\u590d\u6742\u7684\u9632\u706b\u5899\u914d\u7f6e\u3002<\/li>\n<li>firewalld&#xff1a;\u9002\u7528\u4e8e CentOS\/RHEL&#xff0c;\u652f\u6301\u52a8\u6001\u9632\u706b\u5899\u89c4\u5219\u3002<\/li>\n<li>\u4e91\u63d0\u4f9b\u5546\u7684\u9632\u706b\u5899&#xff1a;\u5982 AWS\u3001\u963f\u91cc\u4e91\u3001\u817e\u8baf\u4e91\u7b49\u81ea\u5e26\u7684\u5b89\u5168\u7ec4\u3002<\/li>\n<\/ul>\n<hr \/>\n<h4>1.1 \u57fa\u7840\u9632\u706b\u5899\u89c4\u5219\u914d\u7f6e<\/h4>\n<h5>(1) \u5141\u8bb8\u5fc5\u8981\u7684\u7aef\u53e3<\/h5>\n<ul>\n<li>\n<p>\u5e38\u89c1\u7aef\u53e3&#xff1a;<\/p>\n<ul>\n<li>SSH&#xff08;\u9ed8\u8ba4\u7aef\u53e3 22&#xff0c;\u5efa\u8bae\u66f4\u6539\u4e3a\u975e\u6807\u51c6\u7aef\u53e3&#xff09;<\/li>\n<li>HTTP&#xff08;80&#xff09;\u548c HTTPS&#xff08;443&#xff09;<\/li>\n<li>\u6570\u636e\u5e93\u7aef\u53e3&#xff08;\u5982 MySQL \u7684 3306&#xff0c;PostgreSQL \u7684 5432&#xff09;&#xff0c;\u5efa\u8bae\u9650\u5236\u6765\u6e90 IP\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>UFW \u793a\u4f8b&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p># \u9ed8\u8ba4\u62d2\u7edd\u6240\u6709\u5165\u7ad9\u6d41\u91cf<br \/>\nsudo ufw default deny incoming<br \/>\n# \u9ed8\u8ba4\u5141\u8bb8\u6240\u6709\u51fa\u7ad9\u6d41\u91cf<br \/>\nsudo ufw default allow outgoing<\/p>\n<p># \u5141\u8bb8 SSH<br \/>\nsudo ufw allow 22<br \/>\n# \u5141\u8bb8 HTTP \u548c HTTPS<br \/>\nsudo ufw allow 80<br \/>\nsudo ufw allow 443<br \/>\n# \u5141\u8bb8 MySQL&#xff0c;\u4ec5\u9650\u7279\u5b9a IP<br \/>\nsudo ufw allow from 192.168.1.100 to any port 3306<\/p>\n<\/li>\n<li>\n<p>iptables \u793a\u4f8b&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p># \u6e05\u9664\u73b0\u6709\u89c4\u5219<br \/>\nsudo iptables -F<\/p>\n<p># \u9ed8\u8ba4\u7b56\u7565&#xff1a;\u62d2\u7edd\u6240\u6709\u5165\u7ad9\u6d41\u91cf&#xff0c;\u5141\u8bb8\u51fa\u7ad9\u6d41\u91cf<br \/>\nsudo iptables -P INPUT DROP<br \/>\nsudo iptables -P FORWARD DROP<br \/>\nsudo iptables -P OUTPUT ACCEPT<\/p>\n<p># \u5141\u8bb8\u672c\u5730\u73af\u56de\u63a5\u53e3<br \/>\nsudo iptables -A INPUT -i lo -j ACCEPT<\/p>\n<p># \u5141\u8bb8 SSH<br \/>\nsudo iptables -A INPUT -p tcp &#8211;dport 22 -j ACCEPT<br \/>\n# \u5141\u8bb8 HTTP \u548c HTTPS<br \/>\nsudo iptables -A INPUT -p tcp &#8211;dport 80 -j ACCEPT<br \/>\nsudo iptables -A INPUT -p tcp &#8211;dport 443 -j ACCEPT<\/p>\n<p># \u5141\u8bb8\u7279\u5b9a IP \u8bbf\u95ee MySQL<br \/>\nsudo iptables -A INPUT -p tcp -s 192.168.1.100 &#8211;dport 3306 -j ACCEPT<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h5>(2) \u963b\u6b62\u6240\u6709\u5176\u4ed6\u6d41\u91cf<\/h5>\n<ul>\n<li>UFW \u9ed8\u8ba4\u5df2\u963b\u6b62\u6240\u6709\u672a\u660e\u786e\u5141\u8bb8\u7684\u6d41\u91cf\u3002<\/li>\n<li>iptables&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p># \u62d2\u7edd\u6240\u6709\u5176\u4ed6\u5165\u7ad9\u6d41\u91cf<br \/>\nsudo iptables -A INPUT -j DROP<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h5>(3) \u9650\u5236 SSH \u767b\u5f55\u7684\u8bbf\u95ee<\/h5>\n<ul>\n<li>\n<p>\u66f4\u6539\u9ed8\u8ba4\u7aef\u53e3&#xff1a;<br \/>\n\u4fee\u6539 \/etc\/ssh\/sshd_config&#xff0c;\u5c06\u9ed8\u8ba4\u7aef\u53e3\u4ece 22 \u6539\u4e3a\u975e\u6807\u51c6\u7aef\u53e3&#xff08;\u5982 2222&#xff09;\u3002<\/p>\n<p>plaintext<\/p>\n<p>\u590d\u5236<\/p>\n<p>Port 2222<\/p>\n<p>\u91cd\u542f SSH \u670d\u52a1&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo systemctl restart sshd<\/p>\n<\/li>\n<li>\n<p>\u9650\u5236 SSH \u767b\u5f55\u7684 IP&#xff1a;<br \/>\n\u4ec5\u5141\u8bb8\u53ef\u4fe1 IP \u8bbf\u95ee SSH&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo ufw allow from &lt;trusted_ip&gt; to any port 2222<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>2. \u9632\u5fa1\u6076\u610f\u6d41\u91cf\u7684\u9ad8\u7ea7\u914d\u7f6e<\/h3>\n<h4>2.1 \u963b\u6b62\u7279\u5b9a IP \u6216 IP \u6bb5<\/h4>\n<ul>\n<li>\n<p>\u963b\u6b62\u5355\u4e2a IP&#xff1a;<\/p>\n<ul>\n<li>UFW&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo ufw deny from 192.168.1.101<\/p>\n<\/li>\n<li>iptables&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo iptables -A INPUT -s 192.168.1.101 -j DROP<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u963b\u6b62\u6574\u4e2a IP \u6bb5&#xff1a;<\/p>\n<ul>\n<li>UFW&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo ufw deny from 192.168.1.0\/24<\/p>\n<\/li>\n<li>iptables&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo iptables -A INPUT -s 192.168.1.0\/24 -j DROP<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>2.2 \u9650\u5236\u6bcf\u79d2\u8fde\u63a5\u6570&#xff08;\u9632\u6b62\u66b4\u529b\u7834\u89e3&#xff09;<\/h4>\n<ul>\n<li>\u9650\u5236\u5355\u4e2a IP \u7684\u8fde\u63a5\u8bf7\u6c42\u901f\u7387&#xff1a;\n<ul>\n<li>iptables \u793a\u4f8b&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo iptables -A INPUT -p tcp &#8211;dport 22 -m conntrack &#8211;ctstate NEW -m recent &#8211;set<br \/>\nsudo iptables -A INPUT -p tcp &#8211;dport 22 -m conntrack &#8211;ctstate NEW -m recent &#8211;update &#8211;seconds 60 &#8211;hitcount 5 -j DROP<\/p>\n<p>\u89e3\u91ca&#xff1a;<\/p>\n<ul>\n<li>\u6bcf\u4e2a IP \u5728 60 \u79d2\u5185\u6700\u591a\u5141\u8bb8\u53d1\u8d77 5 \u6b21\u65b0\u7684\u8fde\u63a5\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>2.3 \u4f7f\u7528 Fail2Ban \u9632\u6b62\u66b4\u529b\u7834\u89e3<\/h4>\n<p>Fail2Ban \u662f\u4e00\u4e2a\u57fa\u4e8e\u65e5\u5fd7\u6587\u4ef6\u7684\u9632\u62a4\u5de5\u5177&#xff0c;\u53ef\u4ee5\u81ea\u52a8\u5c01\u7981\u591a\u6b21\u5931\u8d25\u767b\u5f55\u5c1d\u8bd5\u7684 IP\u3002<\/p>\n<ul>\n<li>\n<p>\u5b89\u88c5 Fail2Ban&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo apt install fail2ban<\/p>\n<\/li>\n<li>\n<p>\u914d\u7f6e SSH \u9632\u62a4&#xff1a;<br \/>\n\u7f16\u8f91 \/etc\/fail2ban\/jail.local&#xff1a;<\/p>\n<p>plaintext<\/p>\n<p>\u590d\u5236<\/p>\n<p>[sshd]<br \/>\nenabled &#061; true<br \/>\nport &#061; 2222  # \u5982\u679c\u66f4\u6539\u4e86 SSH \u7aef\u53e3&#xff0c;\u66f4\u65b0\u6b64\u5904<br \/>\nfilter &#061; sshd<br \/>\nlogpath &#061; \/var\/log\/auth.log<br \/>\nmaxretry &#061; 5<br \/>\nbantime &#061; 3600<\/p>\n<\/li>\n<li>\n<p>\u542f\u52a8\u670d\u52a1&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo systemctl restart fail2ban<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>3. \u9632\u5fa1 DDoS \u653b\u51fb\u7684\u9ad8\u7ea7\u7b56\u7565<\/h3>\n<h4>3.1 \u9650\u5236\u6bcf\u79d2\u8bf7\u6c42\u6570<\/h4>\n<ul>\n<li>iptables \u793a\u4f8b&#xff1a;<br \/>\n\u9650\u5236\u6bcf\u79d2\u6700\u591a 10 \u4e2a\u8bf7\u6c42&#xff1a;<\/p>\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo iptables -A INPUT -p tcp &#8211;dport 80 -m limit &#8211;limit 10\/second &#8211;limit-burst 20 -j ACCEPT<br \/>\nsudo iptables -A INPUT -p tcp &#8211;dport 80 -j DROP<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>3.2 \u4f7f\u7528\u9632\u706b\u5899\u6a21\u5757&#xff08;\u5982 iptables \u7684 conntrack \u6a21\u5757&#xff09;<\/h4>\n<ul>\n<li>\u9650\u5236\u5355\u4e2a IP \u7684\u6700\u5927\u5e76\u53d1\u8fde\u63a5\u6570&#xff1a;\n<p>bash<\/p>\n<p>\u590d\u5236<\/p>\n<p>sudo iptables -A INPUT -p tcp &#8211;dport 80 -m connlimit &#8211;connlimit-above 20 -j DROP<\/p>\n<p>\u89e3\u91ca&#xff1a;<\/p>\n<ul>\n<li>\u5355\u4e2a IP \u540c\u65f6\u6700\u591a\u5141\u8bb8 20 \u4e2a\u8fde\u63a5\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>3.3 \u4f7f\u7528\u4e91\u670d\u52a1\u7684 DDoS \u9632\u62a4<\/h4>\n<ul>\n<li>\u5982\u679c\u60a8\u4f7f\u7528\u4e91\u670d\u52a1\u5668&#xff08;\u5982 AWS\u3001\u963f\u91cc\u4e91\u3001\u817e\u8baf\u4e91&#xff09;&#xff0c;\u53ef\u4ee5\u542f\u7528\u5176\u63d0\u4f9b\u7684 DDoS \u9632\u62a4\u529f\u80fd&#xff1a;\n<ul>\n<li>\u963f\u91cc\u4e91&#xff1a;\u4e91\u76fe DDoS \u57fa\u7840\u9632\u62a4\u3002<\/li>\n<li>\u817e\u8baf\u4e91&#xff1a;DDoS \u9ad8\u9632 IP\u3002<\/li>\n<li>AWS&#xff1a;Shield Standard&#xff08;\u514d\u8d39&#xff09;\u6216 Shield Advanced&#xff08;\u4ed8\u8d39&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>3.4 \u542f\u7528 Web \u5e94\u7528\u9632\u706b\u5899&#xff08;WAF&#xff09;<\/h4>\n<p>WAF \u662f\u4fdd\u62a4 Web \u5e94\u7528\u7a0b\u5e8f\u514d\u53d7\u6076\u610f\u8bbf\u95ee\u548c DDoS \u653b\u51fb\u7684\u6709\u6548\u5de5\u5177\u3002<\/p>\n<ul>\n<li>\u63a8\u8350\u5de5\u5177&#xff1a;\n<ul>\n<li>Cloudflare&#xff08;\u514d\u8d39\/\u4ed8\u8d39&#xff09;\u3002<\/li>\n<li>\u963f\u91cc\u4e91 WAF\u3002<\/li>\n<li>ModSecurity&#xff08;\u5f00\u6e90 WAF&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>4. \u9632\u706b\u5899\u89c4\u5219\u914d\u7f6e\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n<li>\n<p>\u6700\u5c0f\u5316\u5f00\u653e\u7aef\u53e3&#xff1a;<\/p>\n<ul>\n<li>\u4ec5\u5f00\u653e\u5fc5\u8981\u7684\u7aef\u53e3&#xff0c;\u51cf\u5c11\u66b4\u9732\u9762\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u9650\u5236 SSH \u8bbf\u95ee&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528\u975e\u6807\u51c6\u7aef\u53e3&#xff0c;\u5e76\u9650\u5236\u53ef\u4fe1 IP \u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5b9a\u671f\u5ba1\u67e5\u89c4\u5219&#xff1a;<\/p>\n<ul>\n<li>\u5b9a\u671f\u68c0\u67e5\u9632\u706b\u5899\u89c4\u5219&#xff0c;\u6e05\u7406\u8fc7\u65f6\u6216\u65e0\u6548\u7684\u89c4\u5219\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u542f\u7528\u65e5\u5fd7\u8bb0\u5f55&#xff1a;<\/p>\n<ul>\n<li>\u786e\u4fdd\u9632\u706b\u5899\u8bb0\u5f55\u6240\u6709\u88ab\u963b\u6b62\u7684\u6d41\u91cf&#xff0c;\u4ee5\u4fbf\u5206\u6790\u6f5c\u5728\u7684\u653b\u51fb\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u7ed3\u5408\u591a\u5c42\u9632\u62a4&#xff1a;<\/p>\n<ul>\n<li>\u914d\u7f6e\u9632\u706b\u5899\u7684\u540c\u65f6&#xff0c;\u7ed3\u5408 Fail2Ban\u3001WAF \u548c\u4e91\u670d\u52a1\u7684 DDoS \u9632\u62a4&#xff0c;\u5f62\u6210\u591a\u5c42\u6b21\u7684\u5b89\u5168\u9632\u5fa1\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h3>5. \u603b\u7ed3&#xff1a;\u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\u4ee5\u963b\u6b62\u6076\u610f\u6d41\u91cf\u548c DDoS&#xff1f;<\/h3>\n<li>\n<p>\u57fa\u7840\u89c4\u5219&#xff1a;<\/p>\n<ul>\n<li>\u9ed8\u8ba4\u62d2\u7edd\u6240\u6709\u5165\u7ad9\u6d41\u91cf&#xff0c;\u4ec5\u5141\u8bb8\u5fc5\u8981\u7aef\u53e3\u3002<\/li>\n<li>\u9650\u5236 SSH \u8bbf\u95ee&#xff0c;\u4ec5\u5141\u8bb8\u53ef\u4fe1 IP\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u9ad8\u7ea7\u7b56\u7565&#xff1a;<\/p>\n<ul>\n<li>\u8bbe\u7f6e\u901f\u7387\u9650\u5236&#xff0c;\u9632\u6b62\u66b4\u529b\u7834\u89e3\u548c DDoS \u653b\u51fb\u3002<\/li>\n<li>\u4f7f\u7528\u5de5\u5177\u5982 Fail2Ban \u81ea\u52a8\u5c01\u7981\u6076\u610f IP\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u4e91\u670d\u52a1\u548c WAF&#xff1a;<\/p>\n<ul>\n<li>\u5229\u7528\u4e91\u63d0\u4f9b\u5546\u7684 DDoS \u4fdd\u62a4\u670d\u52a1\u548c Web 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