{"id":62414,"date":"2025-04-29T10:53:24","date_gmt":"2025-04-29T02:53:24","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62414\/"},"modified":"2025-04-29T10:53:24","modified_gmt":"2025-04-29T02:53:24","slug":"%e9%98%b2%e5%be%a1%e7%bd%91%e7%bb%9c%e6%94%bb%e5%87%bb%e7%9a%84%e5%88%a9%e5%99%a8%ef%bc%9alinux%e5%91%bd%e4%bb%a4%e7%9a%84%e8%bf%90%e7%94%a8-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62414\/","title":{"rendered":"\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\uff1aLinux\u547d\u4ee4\u7684\u8fd0\u7528"},"content":{"rendered":"

\"\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\uff1aLinux\u547d\u4ee4\u7684\u8fd0\u7528\u63d2\u56fe\"<\/p>\n

\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\uff1aLinux\u547d\u4ee4\u7684\u8fd0\u7528<\/p>\n

\u7f51\u7edc\u653b\u51fb\u5df2\u6210\u4e3a\u5f53\u4eca\u4e92\u8054\u7f51\u65f6\u4ee3\u7684\u4e00\u5927\u6311\u6218\u3002\u4e3a\u4e86\u4fdd\u62a4\u4e2a\u4eba\u3001\u7ec4\u7ec7\u548c\u4f01\u4e1a\u7684\u7f51\u7edc\u5b89\u5168\uff0c\u6211\u4eec\u9700\u8981\u638c\u63e1\u4e00\u4e9b\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\u3002\u800c\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u8bb8\u591a\u5f3a\u5927\u7684\u547d\u4ee4\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u63d0\u9ad8\u7f51\u7edc\u5b89\u5168\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u51e0\u4e2a\u5e38\u7528\u7684Linux\u547d\u4ee4\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u8fd0\u7528\u8fd9\u4e9b\u547d\u4ee4\u3002<\/p>\n

    \n
  1. \n

    \u67e5\u770b\u7f51\u7edc\u8fde\u63a5<\/p>\n

    netstat -an<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    netstat\u547d\u4ee4\u7528\u4e8e\u67e5\u770b\u7cfb\u7edf\u7684\u7f51\u7edc\u8fde\u63a5\u72b6\u6001\u3002\u901a\u8fc7\u7ed3\u5408\u53c2\u6570\u201c-an\u201d\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u7cfb\u7edf\u5f53\u524d\u7684\u6240\u6709\u7f51\u7edc\u8fde\u63a5\u548c\u7aef\u53e3\u7684\u4f7f\u7528\u60c5\u51b5\u3002\u8fd9\u5bf9\u4e8e\u5b9e\u65f6\u76d1\u63a7\u7f51\u7edc\u6d3b\u52a8\u548c\u68c0\u6d4b\u5f02\u5e38\u8fde\u63a5\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/li>\n
  2. \n
    \u9632\u706b\u5899\u8bbe\u7f6e<\/p>\n
    iptables<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    iptables\u547d\u4ee4\u7528\u4e8e\u914d\u7f6eLinux\u7cfb\u7edf\u7684\u9632\u706b\u5899\u3002\u901a\u8fc7\u6dfb\u52a0\u89c4\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u9650\u5236\u7279\u5b9a\u7aef\u53e3\u6216IP\u7684\u8bbf\u95ee\u3001\u5c4f\u853d\u6076\u610f\u6d41\u91cf\u548c\u963b\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u7528\u4e8e\u963b\u6b62\u6765\u81eaIP\u5730\u5740\u4e3a192.168.1.100\u7684\u4e3b\u673a\u8bbf\u95ee80\u7aef\u53e3\uff1a<\/p>\n
    iptables -A INPUT -s 192.168.1.100 -p tcp --dport 80 -j DROP<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/li>\n
  3. \n
    \u9650\u5236\u7f51\u7edc\u5e26\u5bbd<\/p>\n
    tc<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    tc\u547d\u4ee4\u7528\u4e8e\u914d\u7f6eLinux\u7cfb\u7edf\u7684\u6d41\u91cf\u63a7\u5236\u3002\u901a\u8fc7\u9650\u5236\u7f51\u7edc\u5e26\u5bbd\uff0c\u6211\u4eec\u53ef\u4ee5\u907f\u514d\u7f51\u7edc\u62e5\u585e\u548cDoS\u653b\u51fb\u3002\u4ee5\u4e0b\u4ee3\u7801\u5c06\u7f51\u7edc\u63a5\u53e3eth0\u7684\u8f93\u51fa\u5e26\u5bbd\u9650\u5236\u4e3a1Mbps\uff1a<\/p>\n
    tc qdisc add dev eth0 root tbf rate 1mbit burst 10k latency 70ms<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/li>\n
  4. \n
    \u5ba1\u8ba1\u65e5\u5fd7\u5206\u6790<\/p>\n
    auditd<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    auditd\u662fLinux\u7cfb\u7edf\u7684\u5ba1\u8ba1\u65e5\u5fd7\u5de5\u5177\u3002\u901a\u8fc7\u542f\u7528\u5ba1\u8ba1\u529f\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u8bb0\u5f55\u7cfb\u7edf\u7684\u5404\u79cd\u4e8b\u4ef6\u548c\u64cd\u4f5c\uff0c\u5305\u62ec\u7528\u6237\u767b\u5f55\u3001\u6587\u4ef6\u4fee\u6539\u3001\u8fdb\u7a0b\u542f\u505c\u7b49\u3002\u4ee5\u4e0b\u4ee3\u7801\u542f\u7528\u5ba1\u8ba1\u529f\u80fd\u5e76\u5c06\u65e5\u5fd7\u8bb0\u5f55\u5728\/var\/log\/audit\/\u76ee\u5f55\u4e0b\uff1a<\/p>\n
    systemctl enable auditd.service<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/li>\n
  5. \n
    \u7f51\u7edc\u6d41\u91cf\u5206\u6790<\/p>\n
    tcpdump<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    tcpdump\u547d\u4ee4\u7528\u4e8e\u6355\u83b7\u7f51\u7edc\u6d41\u91cf\u6570\u636e\u5305\u3002\u901a\u8fc7\u5206\u6790\u7f51\u7edc\u6d41\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u68c0\u6d4b\u6076\u610f\u884c\u4e3a\u3001\u8bc6\u522b\u7f51\u7edc\u653b\u51fb\u548c\u83b7\u53d6\u6709\u4ef7\u503c\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u4ee3\u7801\u7528\u4e8e\u6355\u83b7\u6765\u81eaIP\u5730\u5740\u4e3a192.168.1.100\u7684\u4e3b\u673a\u7684\u6240\u6709\u7f51\u7edc\u6d41\u91cf\uff1a<\/p>\n
    tcpdump host 192.168.1.100<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/li>\n
  6. \n
    \u7cfb\u7edf\u5b89\u5168\u52a0\u56fa<\/p>\n
    chmod<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    chmod\u547d\u4ee4\u7528\u4e8e\u4fee\u6539\u6587\u4ef6\u6216\u76ee\u5f55\u7684\u6743\u9650\u3002\u901a\u8fc7\u6b63\u786e\u8bbe\u7f6e\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u6743\u9650\uff0c\u6211\u4eec\u53ef\u4ee5\u907f\u514d\u672a\u6388\u6743\u8bbf\u95ee\u548c\u6076\u610f\u8f6f\u4ef6\u7684\u653b\u51fb\u3002\u4ee5\u4e0b\u4ee3\u7801\u5c06\u6587\u4ef6test.txt\u7684\u6240\u6709\u8005\u7684\u5199\u6743\u9650\u5173\u95ed\uff1a<\/p>\n
    chmod u-w test.txt<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/li>\n<\/ol>\n
    \u9664\u4e86\u4e0a\u8ff0\u547d\u4ee4\uff0c\u8fd8\u6709\u8bb8\u591a\u5176\u4ed6\u6709\u7528\u7684Linux\u547d\u4ee4\u53ef\u4ee5\u7528\u4e8e\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u3002\u4f7f\u7528\u8fd9\u4e9b\u547d\u4ee4\u65f6\uff0c\u8bf7\u52a1\u5fc5\u4ed4\u7ec6\u9605\u8bfb\u5b83\u4eec\u7684\u6587\u6863\u548c\u4f7f\u7528\u8bf4\u660e\uff0c\u5e76\u786e\u4fdd\u5728\u6b63\u786e\u7684\u73af\u5883\u4e2d\u8fdb\u884c\u6d4b\u8bd5\u548c\u8fd0\u884c\u3002<\/p>\n
    \u7ed3\u8bed<\/p>\n
    \u7f51\u7edc\u653b\u51fb\u5bf9\u4e2a\u4eba\u3001\u7ec4\u7ec7\u548c\u4f01\u4e1a\u7684\u7f51\u7edc\u5b89\u5168\u6784\u6210\u4e86\u6781\u5927\u7684\u5a01\u80c1\u3002\u901a\u8fc7\u719f\u7ec3\u638c\u63e1\u548c\u8fd0\u7528Linux\u7cfb\u7edf\u4e2d\u7684\u4e00\u4e9b\u5f3a\u5927\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u4fdd\u62a4\u7f51\u7edc\u5b89\u5168\uff0c\u63d0\u9ad8\u9632\u5fa1\u80fd\u529b\u3002\u7136\u800c\uff0c\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u9700\u8981\u591a\u5c42\u6b21\u3001\u5168\u65b9\u4f4d\u7684\u9632\u62a4\u7b56\u7565\uff0c\u5e76\u4e14\u9700\u8981\u5b9a\u671f\u66f4\u65b0\u548c\u8c03\u6574\u3002\u53ea\u6709\u4e0d\u65ad\u5b66\u4e60\u548c\u63a2\u7d22\uff0c\u6211\u4eec\u624d\u80fd\u66f4\u597d\u5730\u5e94\u5bf9\u7f51\u7edc\u5b89\u5168\u7684\u6311\u6218\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\uff1aLinux\u547d\u4ee4\u7684\u8fd0\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\uff1aLinux\u547d\u4ee4\u7684\u8fd0\u7528 \u7f51\u7edc\u653b\u51fb\u5df2\u6210\u4e3a\u5f53\u4eca\u4e92\u8054\u7f51\u65f6\u4ee3\u7684\u4e00\u5927\u6311\u6218\u3002\u4e3a\u4e86\u4fdd\u62a4\u4e2a\u4eba\u3001\u7ec4\u7ec7\u548c\u4f01\u4e1a\u7684\u7f51\u7edc\u5b89\u5168\uff0c\u6211\u4eec\u9700\u8981\u638c\u63e1\u4e00\u4e9b\u9632\u5fa1\u7f51\u7edc\u653b\u51fb\u7684\u5229\u5668\u3002\u800c\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u8bb8\u591a\u5f3a\u5927\u7684\u547d\u4ee4\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u63d0\u9ad8\u7f51\u7edc\u5b89\u5168\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u51e0\u4e2a\u5e38\u7528\u7684Linux\u547d\u4ee4\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u8fd0\u7528\u8fd9\u4e9b\u547d\u4ee4\u3002 \u67e5\u770b\u7f51\u7edc\u8fde\u63a5 netstat -an \u767b\u5f55\u540e\u590d\u5236 netstat\u547d\u4ee4\u7528\u4e8e\u67e5\u770b\u7cfb\u7edf\u7684\u7f51\u7edc\u8fde\u63a5\u72b6\u6001\u3002\u901a\u8fc7\u7ed3\u5408\u53c2\u6570\u201c-an\u201d\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u7cfb\u7edf\u5f53\u524d\u7684\u6240\u6709\u7f51\u7edc\u8fde\u63a5\u548c\u7aef\u53e3\u7684\u4f7f\u7528\u60c5\u51b5\u3002\u8fd9\u5bf9\u4e8e\u5b9e\u65f6\u76d1\u63a7\u7f51\u7edc\u6d3b\u52a8\u548c\u68c0\u6d4b\u5f02\u5e38\u8fde\u63a5\u975e\u5e38\u6709\u7528\u3002 \u9632\u706b\u5899\u8bbe\u7f6e iptables \u767b\u5f55\u540e\u590d\u5236 iptables\u547d\u4ee4\u7528\u4e8e\u914d\u7f6eLinux\u7cfb\u7edf\u7684\u9632\u706b\u5899\u3002\u901a\u8fc7\u6dfb\u52a0\u89c4\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u9650\u5236\u7279\u5b9a\u7aef\u53e3\u6216IP\u7684\u8bbf\u95ee\u3001\u5c4f\u853d\u6076\u610f\u6d41\u91cf\u548c\u963b\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u7528\u4e8e\u963b\u6b62\u6765\u81eaIP\u5730\u5740\u4e3a192.168.1.100\u7684\u4e3b\u673a\u8bbf\u95ee80\u7aef\u53e3\uff1a iptables -A INPUT -s 192.168.1.100 -p tcp –dport 80 -j DROP \u767b\u5f55\u540e\u590d\u5236 \u9650\u5236\u7f51\u7edc\u5e26\u5bbd tc \u767b\u5f55\u540e\u590d\u5236 tc\u547d\u4ee4\u7528\u4e8e\u914d\u7f6eLinux\u7cfb\u7edf\u7684\u6d41\u91cf\u63a7\u5236\u3002\u901a\u8fc7\u9650\u5236\u7f51\u7edc\u5e26\u5bbd\uff0c\u6211\u4eec\u53ef\u4ee5\u907f\u514d\u7f51\u7edc\u62e5\u585e\u548cDoS\u653b\u51fb\u3002\u4ee5\u4e0b\u4ee3\u7801\u5c06\u7f51\u7edc\u63a5\u53e3eth0\u7684\u8f93\u51fa\u5e26\u5bbd\u9650\u5236\u4e3a1Mbps\uff1a tc qdisc add dev eth0 root tbf rate 1mbit burst 10k latency 70ms \u767b\u5f55\u540e\u590d\u5236 \u5ba1\u8ba1\u65e5\u5fd7\u5206\u6790 auditd \u767b\u5f55\u540e\u590d\u5236 auditd\u662fLinux\u7cfb\u7edf\u7684\u5ba1\u8ba1\u65e5\u5fd7\u5de5\u5177\u3002\u901a\u8fc7\u542f\u7528\u5ba1\u8ba1\u529f\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u8bb0\u5f55\u7cfb\u7edf\u7684\u5404\u79cd\u4e8b\u4ef6\u548c\u64cd\u4f5c\uff0c\u5305\u62ec\u7528\u6237\u767b\u5f55\u3001\u6587\u4ef6\u4fee\u6539\u3001\u8fdb\u7a0b\u542f\u505c\u7b49\u3002\u4ee5\u4e0b\u4ee3\u7801\u542f\u7528\u5ba1\u8ba1\u529f\u80fd\u5e76\u5c06\u65e5\u5fd7\u8bb0\u5f55\u5728\/var\/log\/audit\/\u76ee\u5f55\u4e0b\uff1a systemctl enable auditd.service \u767b\u5f55\u540e\u590d\u5236 \u7f51\u7edc\u6d41\u91cf\u5206\u6790 tcpdump \u767b\u5f55\u540e\u590d\u5236 tcpdump\u547d\u4ee4\u7528\u4e8e\u6355\u83b7\u7f51\u7edc\u6d41\u91cf\u6570\u636e\u5305\u3002\u901a\u8fc7\u5206\u6790\u7f51\u7edc\u6d41\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u68c0\u6d4b\u6076\u610f\u884c\u4e3a\u3001\u8bc6\u522b\u7f51\u7edc\u653b\u51fb\u548c\u83b7\u53d6\u6709\u4ef7\u503c\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u4ee3\u7801\u7528\u4e8e\u6355\u83b7\u6765\u81eaIP\u5730\u5740\u4e3a192.168.1.100\u7684\u4e3b\u673a\u7684\u6240\u6709\u7f51\u7edc\u6d41\u91cf\uff1a tcpdump host 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