{"id":51099,"date":"2024-12-03T10:47:33","date_gmt":"2024-12-03T02:47:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51099\/"},"modified":"2024-12-03T10:47:33","modified_gmt":"2024-12-03T02:47:33","slug":"%e5%a6%82%e4%bd%95%e9%98%b2%e6%ad%a2ddos%e6%94%bb%e5%87%bb%ef%bc%9a%e4%bf%9d%e6%8a%a4%e6%82%a8%e7%9a%84linux%e6%9c%8d%e5%8a%a1%e5%99%a8-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51099\/","title":{"rendered":"\u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668<\/h1>\n

\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n

\u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668<\/p>\n

DDoS\u653b\u51fb\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\uff0c\u5b83\u53ef\u4ee5\u4f7f\u5f97\u670d\u52a1\u5668\u8fc7\u8f7d\u6216\u4e0d\u53ef\u7528\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u51e0\u79cd\u65b9\u6cd5\u6765\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668\u514d\u53d7DDoS\u653b\u51fb\uff0c\u5305\u62ec\u4f18\u5316\u7f51\u7edc\u914d\u7f6e\u3001\u4f7f\u7528\u9632\u706b\u5899\u548c\u5b89\u88c5DDoS\u9632\u62a4\u8f6f\u4ef6\u3002<\/p>\n

    \n
  1. \n

    \u4f18\u5316\u7f51\u7edc\u914d\u7f6e
    \u7f51\u7edc\u914d\u7f6e\u7684\u4f18\u5316\u662f\u786e\u4fdd\u60a8\u7684\u670d\u52a1\u5668\u80fd\u591f\u627f\u53d7\u5927\u91cf\u6d41\u91cf\u7684\u7b2c\u4e00\u6b65\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5173\u952e\u7684\u914d\u7f6e\u4f18\u5316\u5efa\u8bae\uff1a<\/p>\n

      \n
    • \u589e\u5927\u670d\u52a1\u5668\u7684\u5e26\u5bbd\uff1a\u786e\u4fdd\u60a8\u7684\u670d\u52a1\u5668\u5e26\u5bbd\u8db3\u591f\u652f\u6301\u9ad8\u8d1f\u8f7d\u7684\u6d41\u91cf\u3002<\/li>\n
    • \u8c03\u6574TCP\u53c2\u6570\uff1a\u6839\u636e\u670d\u52a1\u5668\u7684\u6027\u80fd\u548c\u9700\u6c42\u8c03\u6574TCP\u53c2\u6570\uff0c\u4f8b\u5982\u8c03\u6574TCP\u63a5\u6536\u548c\u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u4ee5\u63d0\u9ad8\u7f51\u7edc\u541e\u5410\u91cf\u548c\u54cd\u5e94\u901f\u5ea6\u3002<\/li>\n
    • \u542f\u7528SYN Cookies\uff1aSYN Cookies\u662f\u4e00\u79cd\u9632\u6b62SYN Flood\u653b\u51fb\u7684\u65b9\u6cd5\uff0c\u5728TCP\u4e09\u6b21\u63e1\u624b\u65f6\u52a8\u6001\u751f\u6210\u548c\u6821\u9a8cSYN Cookie\uff0c\u4ee5\u9632\u6b62\u653b\u51fb\u8005\u6d88\u8017\u670d\u52a1\u5668\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

      \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528sysctl\u547d\u4ee4\u6765\u8c03\u6574TCP\u53c2\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n

      # \u6253\u5f00TCP\u7684SYN Cookie\u4fdd\u62a4\nsysctl -w net.ipv4.tcp_syncookies=1\n\n# \u589e\u5927TCP\u63a5\u6536\u7f13\u51b2\u533a\u5927\u5c0f\nsysctl -w net.core.rmem_max=26214400\n\n# \u589e\u5927TCP\u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f\nsysctl -w net.core.wmem_max=26214400<\/pre>\n
        \n
      1. \u4f7f\u7528\u9632\u706b\u5899
        \u9632\u706b\u5899\u53ef\u4ee5\u5e2e\u52a9\u60a8\u8fc7\u6ee4\u548c\u9650\u5236\u5bf9\u670d\u52a1\u5668\u7684\u6d41\u91cf\uff0c\u4ee5\u9632\u6b62DDoS\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528iptables\u9632\u706b\u5899\u6765\u4fdd\u62a4\u670d\u52a1\u5668\u7684\u793a\u4f8b\u89c4\u5219\uff1a<\/li>\n<\/ol>\n
        # \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5\u901a\u8fc7\niptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT\n\n# \u5141\u8bb8SSH\u6d41\u91cf\u901a\u8fc7\niptables -A INPUT -p tcp --dport 22 -j ACCEPT\n\n# \u9650\u5236ICMP\u6d41\u91cf\niptables -A INPUT -p icmp --icmp-type echo-request -m limit --limit 1\/s -j ACCEPT\niptables -A INPUT -p icmp -j DROP\n\n# \u9650\u5236\u7279\u5b9a\u7684\u7aef\u53e3\u6d41\u91cf\niptables -A INPUT -p tcp --dport 80 -m limit --limit 100\/minute -j ACCEPT\niptables -A INPUT -p tcp --dport 80 -j DROP<\/pre>\n
        \u4ee5\u4e0a\u89c4\u5219\u793a\u4f8b\u53ea\u662f\u4e00\u4e2a\u8d77\u70b9\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u548c\u7f51\u7edc\u73af\u5883\u6765\u8c03\u6574\u9632\u706b\u5899\u89c4\u5219\u3002<\/p>\n
          \n
        1. \n
          \u5b89\u88c5DDoS\u9632\u62a4\u8f6f\u4ef6
          \u9664\u4e86\u914d\u7f6e\u7f51\u7edc\u548c\u4f7f\u7528\u9632\u706b\u5899\uff0c\u5b89\u88c5\u4e13\u95e8\u7684DDoS\u9632\u62a4\u8f6f\u4ef6\u4e5f\u662f\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7DDoS\u653b\u51fb\u7684\u4e00\u79cd\u91cd\u8981\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u8f6f\u4ef6\uff1a<\/p>\n
            \n
          • ModSecurity\uff1a\u4e00\u4e2a\u5f00\u6e90\u7684Web\u5e94\u7528\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u68c0\u6d4b\u548c\u963b\u6b62\u6076\u610fHTTP\/HTTPS\u8bf7\u6c42\u3002<\/li>\n
          • Fail2Ban\uff1a\u4e00\u4e2a\u81ea\u52a8\u5316\u7684\u963b\u6b62\u6076\u610f\u767b\u5f55\u5c1d\u8bd5\u548c\u6076\u610f\u8bf7\u6c42\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u4fdd\u62a4SSH\u3001FTP\u548c\u5176\u4ed6\u670d\u52a1\u3002<\/li>\n
          • Nginx Anti-DDoS\uff1a\u4e00\u4e2a\u57fa\u4e8eNginx\u7684\u9632\u62a4\u8f6f\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u9650\u5236\u5e76\u53d1\u8fde\u63a5\u548c\u8bf7\u6c42\u901f\u7387\u6765\u62b5\u5fa1DDoS\u653b\u51fb\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
            \u5b89\u88c5\u8fd9\u4e9b\u8f6f\u4ef6\u65f6\uff0c\u8bf7\u9075\u5faa\u5b98\u65b9\u6587\u6863\u4e2d\u7684\u6307\u5357\uff0c\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n
            \u7efc\u4e0a\u6240\u8ff0\uff0c\u901a\u8fc7\u4f18\u5316\u7f51\u7edc\u914d\u7f6e\u3001\u4f7f\u7528\u9632\u706b\u5899\u548c\u5b89\u88c5DDoS\u9632\u62a4\u8f6f\u4ef6\uff0c\u60a8\u53ef\u4ee5\u589e\u5f3a\u60a8\u7684Linux\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\uff0c\u964d\u4f4eDDoS\u653b\u51fb\u7684\u98ce\u9669\u3002\u8bf7\u8bb0\u4f4f\uff0c\u7f51\u7edc\u5b89\u5168\u662f\u4e00\u4e2a\u4e0d\u65ad\u53d1\u5c55\u7684\u9886\u57df\uff0c\u53ca\u65f6\u66f4\u65b0\u548c\u505a\u597d\u5b89\u5168\u63aa\u65bd\u662f\u4fdd\u6301\u670d\u52a1\u5668\u5b89\u5168\u7684\u5173\u952e\u3002<\/p>\n
            \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n
            \n
            <\/dt>\n
            \n   \u5982\u4f55\u8bc6\u522bPHP5.6\u5230PHP7.4\u5347\u7ea7\u4e2d\u7684\u6f5c\u5728\u517c\u5bb9\u6027\u95ee\u9898\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
            \u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668 \u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~ \u5982\u4f55\u9632\u6b62DDoS\u653b\u51fb\uff1a\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668 DDoS\u653b\u51fb\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\uff0c\u5b83\u53ef\u4ee5\u4f7f\u5f97\u670d\u52a1\u5668\u8fc7\u8f7d\u6216\u4e0d\u53ef\u7528\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u51e0\u79cd\u65b9\u6cd5\u6765\u4fdd\u62a4\u60a8\u7684Linux\u670d\u52a1\u5668\u514d\u53d7DDoS\u653b\u51fb\uff0c\u5305\u62ec\u4f18\u5316\u7f51\u7edc\u914d\u7f6e\u3001\u4f7f\u7528\u9632\u706b\u5899\u548c\u5b89\u88c5DDoS\u9632\u62a4\u8f6f\u4ef6\u3002 \u4f18\u5316\u7f51\u7edc\u914d\u7f6e\u7f51\u7edc\u914d\u7f6e\u7684\u4f18\u5316\u662f\u786e\u4fdd\u60a8\u7684\u670d\u52a1\u5668\u80fd\u591f\u627f\u53d7\u5927\u91cf\u6d41\u91cf\u7684\u7b2c\u4e00\u6b65\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5173\u952e\u7684\u914d\u7f6e\u4f18\u5316\u5efa\u8bae\uff1a \u589e\u5927\u670d\u52a1\u5668\u7684\u5e26\u5bbd\uff1a\u786e\u4fdd\u60a8\u7684\u670d\u52a1\u5668\u5e26\u5bbd\u8db3\u591f\u652f\u6301\u9ad8\u8d1f\u8f7d\u7684\u6d41\u91cf\u3002 \u8c03\u6574TCP\u53c2\u6570\uff1a\u6839\u636e\u670d\u52a1\u5668\u7684\u6027\u80fd\u548c\u9700\u6c42\u8c03\u6574TCP\u53c2\u6570\uff0c\u4f8b\u5982\u8c03\u6574TCP\u63a5\u6536\u548c\u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u4ee5\u63d0\u9ad8\u7f51\u7edc\u541e\u5410\u91cf\u548c\u54cd\u5e94\u901f\u5ea6\u3002 \u542f\u7528SYN Cookies\uff1aSYN Cookies\u662f\u4e00\u79cd\u9632\u6b62SYN Flood\u653b\u51fb\u7684\u65b9\u6cd5\uff0c\u5728TCP\u4e09\u6b21\u63e1\u624b\u65f6\u52a8\u6001\u751f\u6210\u548c\u6821\u9a8cSYN Cookie\uff0c\u4ee5\u9632\u6b62\u653b\u51fb\u8005\u6d88\u8017\u670d\u52a1\u5668\u8d44\u6e90\u3002 \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528sysctl\u547d\u4ee4\u6765\u8c03\u6574TCP\u53c2\u6570\u7684\u793a\u4f8b\uff1a # \u6253\u5f00TCP\u7684SYN Cookie\u4fdd\u62a4 sysctl -w net.ipv4.tcp_syncookies=1 # \u589e\u5927TCP\u63a5\u6536\u7f13\u51b2\u533a\u5927\u5c0f sysctl -w net.core.rmem_max=26214400 # \u589e\u5927TCP\u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f sysctl -w net.core.wmem_max=26214400 \u4f7f\u7528\u9632\u706b\u5899\u9632\u706b\u5899\u53ef\u4ee5\u5e2e\u52a9\u60a8\u8fc7\u6ee4\u548c\u9650\u5236\u5bf9\u670d\u52a1\u5668\u7684\u6d41\u91cf\uff0c\u4ee5\u9632\u6b62DDoS\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528iptables\u9632\u706b\u5899\u6765\u4fdd\u62a4\u670d\u52a1\u5668\u7684\u793a\u4f8b\u89c4\u5219\uff1a # \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5\u901a\u8fc7 iptables -A INPUT -m state –state RELATED,ESTABLISHED -j ACCEPT # \u5141\u8bb8SSH\u6d41\u91cf\u901a\u8fc7 iptables -A INPUT -p tcp –dport 22 -j ACCEPT # \u9650\u5236ICMP\u6d41\u91cf iptables […]<\/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-51099","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51099","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=51099"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51099\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51099"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51099"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}