{"id":62452,"date":"2025-04-29T12:33:34","date_gmt":"2025-04-29T04:33:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62452\/"},"modified":"2025-04-29T12:33:34","modified_gmt":"2025-04-29T04:33:34","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%91%bd%e4%bb%a4%e8%a1%8c%e6%9d%a5%e4%bf%9d%e6%8a%a4%e4%bd%a0%e7%9a%84linux%e6%9c%8d%e5%8a%a1%e5%99%a8-3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62452\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668"},"content":{"rendered":"

\"\u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668<\/p>\n

\u6982\u8ff0\uff1a
\u5728\u5f53\u4eca\u6570\u5b57\u5316\u65f6\u4ee3\uff0c\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u5c24\u4e3a\u91cd\u8981\u3002\u4f5c\u4e3a\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u7cfb\u5217\u63aa\u65bd\u6765\u4fdd\u62a4\u6211\u4eec\u7684Linux\u670d\u52a1\u5668\u3002\u547d\u4ee4\u884c\u662f\u4e00\u79cd\u975e\u5e38\u6709\u6548\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001\u66f4\u65b0\u7cfb\u7edf
\u4fdd\u6301\u670d\u52a1\u5668\u64cd\u4f5c\u7cfb\u7edf\u662f\u6700\u65b0\u7684\u975e\u5e38\u91cd\u8981\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u66f4\u65b0\u7cfb\u7edf\uff1a
sudo apt update
sudo apt upgrade<\/p>\n

\u4e8c\u3001\u4f7f\u7528\u9632\u706b\u5899
\u9632\u706b\u5899\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528iptables\u547d\u4ee4\u6765\u914d\u7f6e\u548c\u7ba1\u7406\u9632\u706b\u5899\u89c4\u5219\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u793a\u4f8b\uff1a<\/p>\n

    \n
  1. \u5141\u8bb8\u7279\u5b9aIP\u5730\u5740\u8bbf\u95eeSSH\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a22\uff09\uff1a
    sudo iptables -A INPUT -p tcp -s 192.168.1.100 –dport 22 -j ACCEPT<\/li>\n
  2. \u5141\u8bb8\u7279\u5b9aIP\u5730\u5740\u8303\u56f4\u8bbf\u95eeHTTP\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a80\uff09\uff1a
    sudo iptables -A INPUT -p tcp -s 192.168.1.0\/24 –dport 80 -j ACCEPT<\/li>\n
  3. \u62d2\u7edd\u6240\u6709\u5176\u4ed6\u5165\u7ad9\u8fde\u63a5\uff1a
    sudo iptables -A INPUT -j DROP<\/li>\n<\/ol>\n

    \u4e09\u3001\u4f7f\u7528Fail2Ban\u4fdd\u62a4SSH
    Fail2Ban\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5165\u4fb5\u9632\u5fa1\u5de5\u5177\uff0c\u53ef\u4ee5\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u66b4\u529b\u7834\u89e3\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528Fail2Ban\u6765\u4fdd\u62a4SSH\u7684\u793a\u4f8b\uff1a<\/p>\n

      \n
    1. \u5b89\u88c5Fail2Ban\uff1a
      sudo apt install fail2ban<\/li>\n
    2. \u7f16\u8f91Fail2Ban\u914d\u7f6e\u6587\u4ef6\uff1a
      sudo nano \/etc\/fail2ban\/jail.local<\/li>\n
    3. \u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u5230\u6587\u4ef6\u4e2d\uff1a
      [ssh]
      enabled = true
      port = ssh
      filter = sshd
      logpath = \/var\/log\/auth.log
      maxretry = 3
      bantime = 3600<\/li>\n
    4. \u91cd\u65b0\u542f\u52a8Fail2Ban\u670d\u52a1\uff1a
      sudo service fail2ban restart<\/li>\n<\/ol>\n

      \u56db\u3001\u4f7f\u7528\u9632\u5fa1\u6027DNS\u8bbe\u7f6e
      \u4f7f\u7528\u9632\u5fa1\u6027DNS\u8bbe\u7f6e\u53ef\u4ee5\u5e2e\u52a9\u963b\u6b62\u670d\u52a1\u5668\u4e0a\u7684\u6076\u610f\u6d41\u91cf\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n

        \n
      1. \u7f16\u8f91resolv.conf\u6587\u4ef6\uff1a
        sudo nano \/etc\/resolv.conf<\/li>\n
      2. \u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u5230\u6587\u4ef6\u4e2d\uff08Google Public DNS\uff09\uff1a
        nameserver 8.8.8.8
        nameserver 8.8.4.4<\/li>\n
      3. \u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/li>\n<\/ol>\n

        \u4e94\u3001\u4f7f\u7528\u5b89\u5168\u7684SSH\u914d\u7f6e
        SSH\u662f\u8fdc\u7a0b\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u91cd\u8981\u65b9\u5f0f\uff0c\u4f46\u4e5f\u5bb9\u6613\u53d7\u5230\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u914d\u7f6e\u6587\u4ef6\/etc\/ssh\/sshd_config\u4e2d\u7684\u5efa\u8bae\u4fee\u6539\uff1a<\/p>\n

          \n
        1. \u66f4\u6539SSH\u9ed8\u8ba4\u7aef\u53e3\uff08\u5efa\u8bae1024\u4ee5\u4e0a\u7684\u7aef\u53e3\uff09\uff1a
          Port 2222<\/li>\n
        2. \u7981\u7528root\u7528\u6237\u767b\u5f55\uff1a
          PermitRootLogin no<\/li>\n
        3. \u9650\u5236\u53ef\u767b\u5f55\u7684\u7528\u6237\uff1a
          AllowUsers user1 user2<\/li>\n
        4. \u7981\u7528\u5bc6\u7801\u767b\u5f55\uff0c\u4f7f\u7528\u5bc6\u94a5\u767b\u5f55\uff1a
          PasswordAuthentication no<\/li>\n
        5. \u66f4\u6539\u767b\u5f55\u54cd\u5e94\u65f6\u95f4\uff1a
          LoginGraceTime 60<\/li>\n
        6. \u7981\u7528\u7a7a\u5bc6\u7801\uff1a
          PermitEmptyPasswords no<\/li>\n
        7. \u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\uff0c\u91cd\u542fSSH\u670d\u52a1\uff1a
          sudo service ssh restart<\/li>\n<\/ol>\n

          \u516d\u3001\u4f7f\u7528\u5bc6\u7801\u5f3a\u5ea6\u68c0\u67e5
          \u4e3a\u4e86\u4fdd\u62a4\u670d\u52a1\u5668\u8d26\u6237\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528passwdqc\u547d\u4ee4\u6765\u68c0\u67e5\u5bc6\u7801\u5f3a\u5ea6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n

            \n
          1. \u5b89\u88c5passwdqc\uff1a
            sudo apt install libpam-passwdqc<\/li>\n
          2. \u7f16\u8f91\u5bc6\u7801\u7b56\u7565\u914d\u7f6e\u6587\u4ef6\uff1a
            sudo nano \/etc\/pam.d\/common-password<\/li>\n
          3. \u6dfb\u52a0\u4ee5\u4e0b\u884c\uff08\u5728password requisite\u884c\u4e4b\u540e\uff09\uff1a
            password requisite pam_passwdqc.so min=disabled,disabled,16,12,8<\/li>\n
          4. \u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/li>\n<\/ol>\n

            \u603b\u7ed3\uff1a
            \u901a\u8fc7\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4Linux\u670d\u52a1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u589e\u52a0\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\uff0c\u5e76\u9632\u6b62\u6076\u610f\u653b\u51fb\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u4e00\u4e9b\u5e38\u7528\u7684\u547d\u4ee4\u884c\u64cd\u4f5c\u548c\u4ee3\u7801\u793a\u4f8b\uff0c\u4f9b\u670d\u52a1\u5668\u7ba1\u7406\u5458\u53c2\u8003\u548c\u4f7f\u7528\u3002\u540c\u65f6\uff0c\u6211\u4eec\u4e5f\u5e94\u8be5\u7ecf\u5e38\u5173\u6ce8\u670d\u52a1\u5668\u5b89\u5168\u65b9\u9762\u7684\u6700\u65b0\u4fe1\u606f\uff0c\u5e76\u53ca\u65f6\u66f4\u65b0\u7cfb\u7edf\u548c\u5de5\u5177\u6765\u5e94\u5bf9\u65b0\u7684\u5b89\u5168\u5a01\u80c1\u3002\u4fdd\u62a4\u670d\u52a1\u5668\u7684\u5b89\u5168\u662f\u4e00\u4e2a\u4e0d\u65ad\u5b66\u4e60\u548c\u6301\u7eed\u6539\u8fdb\u7684\u8fc7\u7a0b\u3002<\/p>\n

            \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

            \u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668 \u6982\u8ff0\uff1a\u5728\u5f53\u4eca\u6570\u5b57\u5316\u65f6\u4ee3\uff0c\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u5c24\u4e3a\u91cd\u8981\u3002\u4f5c\u4e3a\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u7cfb\u5217\u63aa\u65bd\u6765\u4fdd\u62a4\u6211\u4eec\u7684Linux\u670d\u52a1\u5668\u3002\u547d\u4ee4\u884c\u662f\u4e00\u79cd\u975e\u5e38\u6709\u6548\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u547d\u4ee4\u884c\u6765\u4fdd\u62a4\u4f60\u7684Linux\u670d\u52a1\u5668\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u66f4\u65b0\u7cfb\u7edf\u4fdd\u6301\u670d\u52a1\u5668\u64cd\u4f5c\u7cfb\u7edf\u662f\u6700\u65b0\u7684\u975e\u5e38\u91cd\u8981\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u66f4\u65b0\u7cfb\u7edf\uff1asudo apt updatesudo apt upgrade \u4e8c\u3001\u4f7f\u7528\u9632\u706b\u5899\u9632\u706b\u5899\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528iptables\u547d\u4ee4\u6765\u914d\u7f6e\u548c\u7ba1\u7406\u9632\u706b\u5899\u89c4\u5219\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u793a\u4f8b\uff1a \u5141\u8bb8\u7279\u5b9aIP\u5730\u5740\u8bbf\u95eeSSH\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a22\uff09\uff1asudo iptables -A INPUT -p tcp -s 192.168.1.100 –dport 22 -j ACCEPT \u5141\u8bb8\u7279\u5b9aIP\u5730\u5740\u8303\u56f4\u8bbf\u95eeHTTP\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a80\uff09\uff1asudo iptables -A INPUT -p tcp -s 192.168.1.0\/24 –dport 80 -j ACCEPT \u62d2\u7edd\u6240\u6709\u5176\u4ed6\u5165\u7ad9\u8fde\u63a5\uff1asudo iptables -A INPUT -j DROP \u4e09\u3001\u4f7f\u7528Fail2Ban\u4fdd\u62a4SSHFail2Ban\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5165\u4fb5\u9632\u5fa1\u5de5\u5177\uff0c\u53ef\u4ee5\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u66b4\u529b\u7834\u89e3\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528Fail2Ban\u6765\u4fdd\u62a4SSH\u7684\u793a\u4f8b\uff1a \u5b89\u88c5Fail2Ban\uff1asudo apt install fail2ban \u7f16\u8f91Fail2Ban\u914d\u7f6e\u6587\u4ef6\uff1asudo nano \/etc\/fail2ban\/jail.local \u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u5230\u6587\u4ef6\u4e2d\uff1a[ssh]enabled = trueport = sshfilter = sshdlogpath = \/var\/log\/auth.logmaxretry […]<\/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-62452","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62452","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=62452"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62452\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=62452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=62452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=62452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}