{"id":51195,"date":"2024-12-03T13:41:06","date_gmt":"2024-12-03T05:41:06","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51195\/"},"modified":"2024-12-03T13:41:06","modified_gmt":"2024-12-03T05:41:06","slug":"%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae%e9%98%b2%e7%81%ab%e5%a2%99%e4%bf%9d%e6%8a%a4linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%85%8d%e5%8f%97%e5%85%a5%e4%be%b5-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51195\/","title":{"rendered":"\u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5"},"content":{"rendered":"

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

\u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5<\/h1>\n

\u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec<\/span>\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~<\/p>\n

\u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5<\/p>\n

\u5f15\u8a00\uff1a
\u5728\u5f53\u4eca\u7684\u4e92\u8054\u7f51\u73af\u5883\u4e2d\uff0c\u670d\u52a1\u5668\u9762\u4e34\u7740\u5404\u79cd\u6f5c\u5728\u7684\u5b89\u5168\u5a01\u80c1\u3002\u4e3a\u4e86\u4fdd\u62a4\u6211\u4eec\u7684Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5\uff0c\u914d\u7f6e\u4e00\u4e2a\u5f3a\u5927\u7684\u9632\u706b\u5899\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528iptables\u547d\u4ee4\u5728Linux\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u9632\u706b\u5899\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5e38\u7528\u89c4\u5219\u7684\u793a\u4f8b\u3002<\/p>\n

\u4ec0\u4e48\u662fiptables\uff1f
iptables\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7528\u4e8e\u914d\u7f6e\u7f51\u7edc\u8bbf\u95ee\u89c4\u5219\u7684\u5de5\u5177\u3002\u5b83\u662f\u4e00\u4e2a\u5f88\u5f3a\u5927\u7684\u9632\u706b\u5899\u89e3\u51b3\u65b9\u6848\uff0c\u5141\u8bb8\u7ba1\u7406\u5458\u901a\u8fc7\u5b9a\u4e49\u89c4\u5219\u6765\u9650\u5236\u7f51\u7edc\u6d41\u91cf\u3002\u4f7f\u7528iptables\uff0c\u60a8\u53ef\u4ee5\u63a7\u5236\u8fdb\u51fa\u670d\u52a1\u5668\u7684\u6570\u636e\u5305\u6d41\u52a8\uff0c\u4ece\u800c\u589e\u5f3a\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002<\/p>\n

\u914d\u7f6e\u9632\u706b\u5899\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \n

    \u5b9a\u4e49\u7b56\u7565\uff1a
    \u5728\u8bbe\u7f6e\u5177\u4f53\u7684\u89c4\u5219\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u786e\u5b9a\u9ed8\u8ba4\u7b56\u7565\u3002\u9ed8\u8ba4\u7b56\u7565\u51b3\u5b9a\u4e86\u5f53\u6ca1\u6709\u5339\u914d\u7684\u89c4\u5219\u65f6\u7684\u52a8\u4f5c\u3002\u901a\u5e38\uff0c\u5e94\u8be5\u91c7\u7528\u6700\u5c0f\u6388\u6743\u539f\u5219\uff0c\u5373\u9ed8\u8ba4\u62d2\u7edd\u6240\u6709\u6d41\u91cf\uff0c\u53ea\u5141\u8bb8\u7279\u5b9a\u7684\u6d41\u91cf\u901a\u8fc7\u3002\u4ee5\u4e0b\u793a\u4f8b\u5c06\u9ed8\u8ba4\u7b56\u7565\u8bbe\u7f6e\u4e3a\u62d2\u7edd\u6240\u6709\u7684\u8fdb\u51fa\u6d41\u91cf\uff1a<\/p>\n

    sudo iptables -P INPUT DROP\nsudo iptables -P FORWARD DROP\nsudo iptables -P OUTPUT DROP<\/pre>\n<\/li>\n
  2. \u5141\u8bb8\u6240\u9700\u7684\u6d41\u91cf\uff1a
    \u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u5177\u4f53\u7684\u89c4\u5219\u6765\u5141\u8bb8\u9700\u8981\u7684\u6d41\u91cf\u901a\u8fc7\u9632\u706b\u5899\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u89c4\u5219\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n
      \n
    • \n
      \u5141\u8bb8ssh\u8fde\u63a5\uff08\u4f7f\u752822\u7aef\u53e3\uff09\uff1a<\/p>\n
      sudo iptables -A INPUT -p tcp --dport 22 -j ACCEPT<\/pre>\n<\/li>\n
    • \n
      \u5141\u8bb8HTTP\u8fde\u63a5\uff08\u4f7f\u752880\u7aef\u53e3\uff09\uff1a<\/p>\n
      sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT<\/pre>\n<\/li>\n
    • \n
      \u5141\u8bb8HTTPS\u8fde\u63a5\uff08\u4f7f\u7528443\u7aef\u53e3\uff09\uff1a<\/p>\n
      sudo iptables -A INPUT -p tcp --dport 443 -j ACCEPT<\/pre>\n<\/li>\n
    • \n
      \u5141\u8bb8ping\uff08ICMP\uff09\uff1a<\/p>\n
      sudo iptables -A INPUT -p icmp -j ACCEPT<\/pre>\n<\/li>\n
    • \n
      \u5141\u8bb8loopback\u6d41\u91cf\uff1a<\/p>\n
      sudo iptables -A INPUT -i lo -j ACCEPT\nsudo iptables -A OUTPUT -o lo -j ACCEPT<\/pre>\n<\/li>\n<\/ul>\n
        \n
      1. \n
        \u9632\u6b62DDoS\u653b\u51fb\uff1a
        DDoS\uff08\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\uff09\u653b\u51fb\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7edc\u653b\u51fb\uff0c\u65e8\u5728\u4f7f\u76ee\u6807\u670d\u52a1\u5668\u8fc7\u8f7d\uff0c\u65e0\u6cd5\u63d0\u4f9b\u6b63\u5e38\u670d\u52a1\u3002\u9632\u706b\u5899\u7684\u4e00\u4e2a\u91cd\u8981\u529f\u80fd\u662f\u901a\u8fc7\u9650\u5236\u6bcf\u79d2\u6536\u5230\u7684\u8fde\u63a5\u6570\u6765\u9632\u6b62DDoS\u653b\u51fb\u3002\u4ee5\u4e0b\u793a\u4f8b\u5c06\u6700\u5927\u8fde\u63a5\u6570\u9650\u5236\u4e3a20\uff1a<\/p>\n
        sudo iptables -A INPUT -p tcp --syn -m connlimit --connlimit-above 20 -j DROP<\/pre>\n<\/li>\n
      2. \n
        \u65e5\u5fd7\u8bb0\u5f55\uff1a
        \u914d\u7f6e\u9632\u706b\u5899\u4ee5\u8bb0\u5f55\u6d41\u91cf\u548c\u4e8b\u4ef6\u975e\u5e38\u91cd\u8981\uff0c\u4ee5\u4fbf\u53ca\u65f6\u68c0\u6d4b\u548c\u5e94\u5bf9\u6f5c\u5728\u7684\u653b\u51fb\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u89c4\u5219\u5c06\u9632\u706b\u5899\u65e5\u5fd7\u8bb0\u5f55\u5230\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff1a<\/p>\n
        sudo iptables -A INPUT -j LOG --log-prefix \"Firewall: \"\nsudo iptables -A OUTPUT -j LOG --log-prefix \"Firewall: \"\nsudo iptables -A FORWARD -j LOG --log-prefix \"Firewall: \"<\/pre>\n<\/li>\n
      3. \n
        \u6301\u4e45\u5316\u89c4\u5219\uff1a
        \u5b8c\u6210\u4e0a\u8ff0\u914d\u7f6e\u540e\uff0c\u8fd8\u9700\u8981\u5c06\u9632\u706b\u5899\u89c4\u5219\u4fdd\u5b58\uff0c\u5e76\u5728\u670d\u52a1\u5668\u91cd\u542f\u540e\u81ea\u52a8\u52a0\u8f7d\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u4fdd\u5b58\u9632\u706b\u5899\u914d\u7f6e\uff1a<\/p>\n
        sudo iptables-save > \/etc\/iptables\/rules.v4<\/pre>\n<\/li>\n<\/ol>\n
        \u7ed3\u8bba\uff1a
        \u901a\u8fc7\u914d\u7f6e\u9632\u706b\u5899\u5e76\u5b9a\u4e49\u9002\u5f53\u7684\u89c4\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528iptables\u547d\u4ee4\u8fdb\u884c\u9632\u706b\u5899\u914d\u7f6e\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5e38\u89c1\u89c4\u5219\u7684\u793a\u4f8b\u3002\u7136\u800c\uff0c\u670d\u52a1\u5668\u5b89\u5168\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u5efa\u8bae\u5b9a\u671f\u5ba1\u67e5\u548c\u66f4\u65b0\u9632\u706b\u5899\u89c4\u5219\uff0c\u4ee5\u9002\u5e94\u4e0d\u65ad\u53d8\u5316\u7684\u5b89\u5168\u5a01\u80c1\u3002<\/p>\n
        \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n
        \n
        <\/dt>\n
        \n   \u5982\u4f55\u4f7f\u7528PHP\u4ece\u4e03\u725b\u4e91\u5b58\u50a8\u4e0b\u8f7d\u5e76\u89e3\u7801Base64\u683c\u5f0f\u7684\u56fe\u7247\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
        \u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5 \u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~ \u5982\u4f55\u914d\u7f6e\u9632\u706b\u5899\u4fdd\u62a4Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5 \u5f15\u8a00\uff1a\u5728\u5f53\u4eca\u7684\u4e92\u8054\u7f51\u73af\u5883\u4e2d\uff0c\u670d\u52a1\u5668\u9762\u4e34\u7740\u5404\u79cd\u6f5c\u5728\u7684\u5b89\u5168\u5a01\u80c1\u3002\u4e3a\u4e86\u4fdd\u62a4\u6211\u4eec\u7684Linux\u670d\u52a1\u5668\u514d\u53d7\u5165\u4fb5\uff0c\u914d\u7f6e\u4e00\u4e2a\u5f3a\u5927\u7684\u9632\u706b\u5899\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528iptables\u547d\u4ee4\u5728Linux\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u9632\u706b\u5899\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5e38\u7528\u89c4\u5219\u7684\u793a\u4f8b\u3002 \u4ec0\u4e48\u662fiptables\uff1fiptables\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7528\u4e8e\u914d\u7f6e\u7f51\u7edc\u8bbf\u95ee\u89c4\u5219\u7684\u5de5\u5177\u3002\u5b83\u662f\u4e00\u4e2a\u5f88\u5f3a\u5927\u7684\u9632\u706b\u5899\u89e3\u51b3\u65b9\u6848\uff0c\u5141\u8bb8\u7ba1\u7406\u5458\u901a\u8fc7\u5b9a\u4e49\u89c4\u5219\u6765\u9650\u5236\u7f51\u7edc\u6d41\u91cf\u3002\u4f7f\u7528iptables\uff0c\u60a8\u53ef\u4ee5\u63a7\u5236\u8fdb\u51fa\u670d\u52a1\u5668\u7684\u6570\u636e\u5305\u6d41\u52a8\uff0c\u4ece\u800c\u589e\u5f3a\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002 \u914d\u7f6e\u9632\u706b\u5899\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a \u5b9a\u4e49\u7b56\u7565\uff1a\u5728\u8bbe\u7f6e\u5177\u4f53\u7684\u89c4\u5219\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u786e\u5b9a\u9ed8\u8ba4\u7b56\u7565\u3002\u9ed8\u8ba4\u7b56\u7565\u51b3\u5b9a\u4e86\u5f53\u6ca1\u6709\u5339\u914d\u7684\u89c4\u5219\u65f6\u7684\u52a8\u4f5c\u3002\u901a\u5e38\uff0c\u5e94\u8be5\u91c7\u7528\u6700\u5c0f\u6388\u6743\u539f\u5219\uff0c\u5373\u9ed8\u8ba4\u62d2\u7edd\u6240\u6709\u6d41\u91cf\uff0c\u53ea\u5141\u8bb8\u7279\u5b9a\u7684\u6d41\u91cf\u901a\u8fc7\u3002\u4ee5\u4e0b\u793a\u4f8b\u5c06\u9ed8\u8ba4\u7b56\u7565\u8bbe\u7f6e\u4e3a\u62d2\u7edd\u6240\u6709\u7684\u8fdb\u51fa\u6d41\u91cf\uff1a sudo iptables -P INPUT DROP sudo iptables -P FORWARD DROP sudo iptables -P OUTPUT DROP \u5141\u8bb8\u6240\u9700\u7684\u6d41\u91cf\uff1a\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u5177\u4f53\u7684\u89c4\u5219\u6765\u5141\u8bb8\u9700\u8981\u7684\u6d41\u91cf\u901a\u8fc7\u9632\u706b\u5899\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u89c4\u5219\u793a\u4f8b\uff1a \u5141\u8bb8ssh\u8fde\u63a5\uff08\u4f7f\u752822\u7aef\u53e3\uff09\uff1a sudo iptables -A INPUT -p tcp –dport 22 -j ACCEPT \u5141\u8bb8HTTP\u8fde\u63a5\uff08\u4f7f\u752880\u7aef\u53e3\uff09\uff1a sudo iptables -A INPUT -p tcp –dport 80 -j ACCEPT \u5141\u8bb8HTTPS\u8fde\u63a5\uff08\u4f7f\u7528443\u7aef\u53e3\uff09\uff1a sudo iptables -A INPUT -p tcp –dport 443 -j […]<\/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-51195","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51195","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=51195"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51195\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}