{"id":62427,"date":"2025-04-29T11:12:49","date_gmt":"2025-04-29T03:12:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62427\/"},"modified":"2025-04-29T11:12:49","modified_gmt":"2025-04-29T03:12:49","slug":"linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%ae%a1%e7%90%86%e5%91%98%e7%9a%84%e5%bf%85%e5%a4%87%e6%8a%80%e8%83%bd%ef%bc%9a%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8-3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62427\/","title":{"rendered":"Linux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u5fc5\u5907\u6280\u80fd\uff1a\u670d\u52a1\u5668\u5b89\u5168"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/169416291240046.jpg\" class=\"aligncenter\" title=\"Linux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u5fc5\u5907\u6280\u80fd\uff1a\u670d\u52a1\u5668\u5b89\u5168\u63d2\u56fe\" alt=\"Linux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u5fc5\u5907\u6280\u80fd\uff1a\u670d\u52a1\u5668\u5b89\u5168\u63d2\u56fe\" \/><\/p>\n<p>Linux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u5fc5\u5907\u6280\u80fd\uff1a\u670d\u52a1\u5668\u5b89\u5168<\/p>\n<p>\u968f\u7740\u4fe1\u606f\u6280\u672f\u7684\u8fc5\u731b\u53d1\u5c55\uff0c\u670d\u52a1\u5668\u7684\u4f7f\u7528\u53d8\u5f97\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002\u4f5c\u4e3aLinux\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u4fdd\u8bc1\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u6210\u4e3a\u4e86\u4e00\u9879\u91cd\u8981\u7684\u4efb\u52a1\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u4e00\u4e9b\u4fdd\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u5173\u952e\u6280\u80fd\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u548c\u5b9e\u8df5\u8fd9\u4e9b\u6280\u80fd\u3002<\/p>\n<ol>\n<li>\u66f4\u65b0\u7cfb\u7edf\u548c\u8f6f\u4ef6<\/li>\n<\/ol>\n<p>\u4fdd\u6301\u670d\u52a1\u5668\u4e0a\u5b89\u88c5\u7684\u7cfb\u7edf\u548c\u8f6f\u4ef6\u6700\u65b0\u662f\u7ef4\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u91cd\u8981\u4e00\u73af\u3002\u66f4\u65b0\u64cd\u4f5c\u7cfb\u7edf\u548c\u76f8\u5173\u8f6f\u4ef6\u53ef\u4ee5\u8865\u5145\u5b89\u5168\u6f0f\u6d1e\uff0c\u5e76\u63d0\u4f9b\u66f4\u5f3a\u5927\u7684\u5b89\u5168\u6027\u3002<\/p>\n<p>\u5728Linux\u7cfb\u7edf\u4e0a\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u66f4\u65b0\u64cd\u4f5c\u7cfb\u7edf\u548c\u8f6f\u4ef6\u5305\uff1a<\/p>\n<pre>sudo apt update\nsudo apt upgrade<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u914d\u7f6e\u9632\u706b\u5899<\/li>\n<\/ol>\n<p>\u9632\u706b\u5899\u662f\u670d\u52a1\u5668\u5b89\u5168\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u53ef\u4ee5\u63a7\u5236\u7f51\u7edc\u6d41\u91cf\uff0c\u963b\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\u5728Linux\u4e2d\uff0ciptables\u662f\u4e00\u79cd\u6d41\u884c\u7684\u9632\u706b\u5899\u5de5\u5177\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684iptables\u914d\u7f6e\u793a\u4f8b\uff0c\u53ea\u5141\u8bb8\u6765\u81ea\u7279\u5b9aIP\u5730\u5740\u7684SSH\u8fde\u63a5\uff0c\u5e76\u963b\u6b62\u5176\u4ed6\u6240\u6709\u6d41\u91cf\uff1a<\/p>\n<pre>sudo iptables -A INPUT -p tcp --dport 22 -s 192.168.0.100 -j ACCEPT\nsudo iptables -A INPUT -p tcp --dport 22 -j DROP<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u914d\u7f6eSSH\u5b89\u5168<\/li>\n<\/ol>\n<p>SSH\u662f\u8fdc\u7a0b\u7ba1\u7406\u670d\u52a1\u5668\u7684\u91cd\u8981\u534f\u8bae\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u914d\u7f6e\u63aa\u65bd\u6765\u589e\u5f3aSSH\u5b89\u5168\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u53ef\u4ee5\u4fee\u6539SSH\u7aef\u53e3\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0bSSH\u4f7f\u752822\u7aef\u53e3\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u4fee\u6539\u4e3a\u5176\u4ed6\u7aef\u53e3\uff0c\u59822222\uff1a<\/p>\n<pre>sudo vi \/etc\/ssh\/sshd_config<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u627e\u5230\u5e76\u4fee\u6539\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre># Port 22\nPort 2222<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7136\u540e\uff0c\u91cd\u65b0\u542f\u52a8SSH\u670d\u52a1\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\uff1a<\/p>\n<pre>sudo service ssh restart<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u53e6\u5916\uff0c\u7981\u7528SSH\u5bc6\u7801\u767b\u5f55\uff0c\u53ea\u5141\u8bb8\u4f7f\u7528SSH\u5bc6\u94a5\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u66b4\u529b\u7834\u89e3\u653b\u51fb\u3002<\/p>\n<p>\u5c06\u4ee5\u4e0b\u884c\u6dfb\u52a0\u5230SSH\u914d\u7f6e\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre>sudo vi \/etc\/ssh\/sshd_config<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236    <\/p>\n<pre>PasswordAuthentication no<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6700\u540e\uff0c\u91cd\u65b0\u542f\u52a8SSH\u670d\u52a1\u3002<\/p>\n<ol>\n<li>\u8bbe\u7f6e\u5b89\u5168\u5bc6\u7801\u7b56\u7565<\/li>\n<\/ol>\n<p>\u5f3a\u5bc6\u7801\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u5173\u952e\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5bc6\u7801\u7b56\u7565\u8981\u6c42\u7528\u6237\u4f7f\u7528\u590d\u6742\u5bc6\u7801\uff0c\u5e76\u5b9a\u671f\u66f4\u6362\u5bc6\u7801\u3002<\/p>\n<p>\u5728Linux\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4fee\u6539\u5bc6\u7801\u7b56\u7565\uff1a<\/p>\n<pre>sudo vi \/etc\/login.defs<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u627e\u5230\u5e76\u4fee\u6539\u4ee5\u4e0b\u884c\uff0c\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8bbe\u7f6e\u5bc6\u7801\u6700\u5c0f\u957f\u5ea6\u3001\u5bc6\u7801\u8fc7\u671f\u65f6\u95f4\u548c\u5bc6\u7801\u590d\u6742\u5ea6\u8981\u6c42\uff1a<\/p>\n<pre>PASS_MAX_DAYS   90\nPASS_MIN_DAYS   7\nPASS_MIN_LEN    8\nPASS_WARN_AGE   7<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5b9a\u671f\u5907\u4efd\u548c\u76d1\u63a7<\/li>\n<\/ol>\n<p>\u5b9a\u671f\u5907\u4efd\u670d\u52a1\u5668\u6570\u636e\u662f\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u4e00\u9879\u91cd\u8981\u4efb\u52a1\u3002\u8fd9\u6837\uff0c\u5373\u4f7f\u670d\u52a1\u5668\u53d7\u5230\u653b\u51fb\u6216\u53d1\u751f\u6545\u969c\uff0c\u6211\u4eec\u4e5f\u80fd\u6062\u590d\u6570\u636e\u5e76\u91cd\u65b0\u642d\u5efa\u670d\u52a1\u5668\u3002<\/p>\n<p>\u4f7f\u7528Cron\u6216\u5176\u4ed6\u5de5\u5177\u53ef\u4ee5\u5b9a\u671f\u6267\u884c\u5907\u4efd\u4efb\u52a1\uff0c\u5e76\u5c06\u5907\u4efd\u6587\u4ef6\u5b58\u50a8\u5728\u5b89\u5168\u7684\u4f4d\u7f6e\u3002<\/p>\n<p>\u76d1\u63a7\u670d\u52a1\u5668\u72b6\u6001\u4e5f\u662f\u7ef4\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u91cd\u8981\u4e00\u73af\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u76d1\u63a7\u5de5\u5177\u5982Nagios\u6216Zabbix\u6765\u76d1\u63a7\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u3001\u7f51\u7edc\u6d41\u91cf\u3001\u78c1\u76d8\u4f7f\u7528\u7b49\u6307\u6807\uff0c\u5e76\u53ca\u65f6\u53d1\u51fa\u8b66\u62a5\u3002<\/p>\n<p>\u603b\u7ed3<\/p>\n<p>\u4f5c\u4e3aLinux\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u6211\u4eec\u9700\u8981\u5177\u5907\u4fdd\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u5fc5\u5907\u6280\u80fd\u3002\u901a\u8fc7\u66f4\u65b0\u7cfb\u7edf\u548c\u8f6f\u4ef6\u3001\u914d\u7f6e\u9632\u706b\u5899\u3001\u52a0\u5f3aSSH\u5b89\u5168\u3001\u8bbe\u7f6e\u5b89\u5168\u5bc6\u7801\u7b56\u7565\u4ee5\u53ca\u5b9a\u671f\u5907\u4efd\u548c\u76d1\u63a7\uff0c\u6211\u4eec\u80fd\u591f\u6781\u5927\u5730\u964d\u4f4e\u670d\u52a1\u5668\u906d\u53d7\u653b\u51fb\u7684\u98ce\u9669\u3002<\/p>\n<p>\u4ee5\u4e0a\u662f\u4e00\u4e9b\u5173\u952e\u6280\u80fd\u7684\u7b80\u5355\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u60a8\u7684\u670d\u52a1\u5668\u5b89\u5168\u4fdd\u62a4\u63d0\u4f9b\u4e00\u4e9b\u5e2e\u52a9\u3002\u901a\u8fc7\u5b9e\u8df5\u548c\u6301\u7eed\u5b66\u4e60\uff0c\u6211\u4eec\u80fd\u591f\u66f4\u597d\u5730\u63d0\u9ad8\u81ea\u5df1\u7684\u670d\u52a1\u5668\u7ba1\u7406\u80fd\u529b\u548c\u6280\u80fd\u6c34\u5e73\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fLinux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u5fc5\u5907\u6280\u80fd\uff1a\u670d\u52a1\u5668\u5b89\u5168\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7684\u5fc5\u5907\u6280\u80fd\uff1a\u670d\u52a1\u5668\u5b89\u5168 \u968f\u7740\u4fe1\u606f\u6280\u672f\u7684\u8fc5\u731b\u53d1\u5c55\uff0c\u670d\u52a1\u5668\u7684\u4f7f\u7528\u53d8\u5f97\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002\u4f5c\u4e3aLinux\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u4fdd\u8bc1\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u6210\u4e3a\u4e86\u4e00\u9879\u91cd\u8981\u7684\u4efb\u52a1\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u4e00\u4e9b\u4fdd\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u5173\u952e\u6280\u80fd\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u548c\u5b9e\u8df5\u8fd9\u4e9b\u6280\u80fd\u3002 \u66f4\u65b0\u7cfb\u7edf\u548c\u8f6f\u4ef6 \u4fdd\u6301\u670d\u52a1\u5668\u4e0a\u5b89\u88c5\u7684\u7cfb\u7edf\u548c\u8f6f\u4ef6\u6700\u65b0\u662f\u7ef4\u62a4\u670d\u52a1\u5668\u5b89\u5168\u7684\u91cd\u8981\u4e00\u73af\u3002\u66f4\u65b0\u64cd\u4f5c\u7cfb\u7edf\u548c\u76f8\u5173\u8f6f\u4ef6\u53ef\u4ee5\u8865\u5145\u5b89\u5168\u6f0f\u6d1e\uff0c\u5e76\u63d0\u4f9b\u66f4\u5f3a\u5927\u7684\u5b89\u5168\u6027\u3002 \u5728Linux\u7cfb\u7edf\u4e0a\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u66f4\u65b0\u64cd\u4f5c\u7cfb\u7edf\u548c\u8f6f\u4ef6\u5305\uff1a sudo apt update sudo apt upgrade \u767b\u5f55\u540e\u590d\u5236 \u914d\u7f6e\u9632\u706b\u5899 \u9632\u706b\u5899\u662f\u670d\u52a1\u5668\u5b89\u5168\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u53ef\u4ee5\u63a7\u5236\u7f51\u7edc\u6d41\u91cf\uff0c\u963b\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\u5728Linux\u4e2d\uff0ciptables\u662f\u4e00\u79cd\u6d41\u884c\u7684\u9632\u706b\u5899\u5de5\u5177\u3002 \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684iptables\u914d\u7f6e\u793a\u4f8b\uff0c\u53ea\u5141\u8bb8\u6765\u81ea\u7279\u5b9aIP\u5730\u5740\u7684SSH\u8fde\u63a5\uff0c\u5e76\u963b\u6b62\u5176\u4ed6\u6240\u6709\u6d41\u91cf\uff1a sudo iptables -A INPUT -p tcp &#8211;dport 22 -s 192.168.0.100 -j ACCEPT sudo iptables -A INPUT -p tcp &#8211;dport 22 -j DROP \u767b\u5f55\u540e\u590d\u5236 \u914d\u7f6eSSH\u5b89\u5168 SSH\u662f\u8fdc\u7a0b\u7ba1\u7406\u670d\u52a1\u5668\u7684\u91cd\u8981\u534f\u8bae\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u914d\u7f6e\u63aa\u65bd\u6765\u589e\u5f3aSSH\u5b89\u5168\u3002 \u9996\u5148\uff0c\u6211\u4eec\u53ef\u4ee5\u4fee\u6539SSH\u7aef\u53e3\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0bSSH\u4f7f\u752822\u7aef\u53e3\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u4fee\u6539\u4e3a\u5176\u4ed6\u7aef\u53e3\uff0c\u59822222\uff1a sudo vi \/etc\/ssh\/sshd_config \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 \u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u627e\u5230\u5e76\u4fee\u6539\u4ee5\u4e0b\u884c\uff1a # Port 22 Port 2222 \u767b\u5f55\u540e\u590d\u5236 \u7136\u540e\uff0c\u91cd\u65b0\u542f\u52a8SSH\u670d\u52a1\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\uff1a sudo 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