{"id":61444,"date":"2025-04-29T12:56:34","date_gmt":"2025-04-29T04:56:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/61444\/"},"modified":"2025-04-29T12:56:34","modified_gmt":"2025-04-29T04:56:34","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%ae%89%e5%85%a8%e7%9a%84%e8%bf%9c%e7%a8%8b%e7%99%bb%e5%bd%95%e5%8d%8f%e8%ae%ae%ef%bc%88ssh%ef%bc%89%e4%bf%9d%e6%8a%a4centos%e6%9c%8d%e5%8a%a1%e5%99%a8-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/61444\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u5b89\u5168\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff08SSH\uff09\u4fdd\u62a4CentOS\u670d\u52a1\u5668"},"content":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528\u5b89\u5168\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff08ssh\uff09\u4fdd\u62a4centos\u670d\u52a1\u5668<\/p>\n<p>\u968f\u7740\u7f51\u7edc\u7684\u53d1\u5c55\uff0c\u8fdc\u7a0b\u767b\u5f55\u670d\u52a1\u5668\u6210\u4e3a\u4e86\u7ba1\u7406\u670d\u52a1\u5668\u5fc5\u4e0d\u53ef\u5c11\u7684\u65b9\u5f0f\u3002\u7136\u800c\uff0c\u4f20\u7edf\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff08\u5982telnet\uff09\u5b58\u5728\u5b89\u5168\u6027\u95ee\u9898\uff0c\u56e0\u6b64SSH\uff08Secure Shell\uff09\u8fc5\u901f\u6210\u4e3a\u4e86\u9996\u9009\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u5982\u4f55\u4f7f\u7528SSH\u4fdd\u62a4CentOS\u670d\u52a1\u5668\uff0c\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p>SSH\u662f\u4e00\u79cd\u52a0\u5bc6\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u53ef\u4ee5\u5728\u4e0d\u5b89\u5168\u7684\u7f51\u7edc\u4e2d\u5b89\u5168\u5730\u8fdb\u884c\u8fdc\u7a0b\u767b\u5f55\u3002\u5b83\u4f7f\u7528\u4e86\u516c\u94a5\u52a0\u5bc6\u6280\u672f\u6765\u9a8c\u8bc1\u670d\u52a1\u5668\u7684\u8eab\u4efd\uff0c\u5e76\u901a\u8fc7\u516c\u94a5\u548c\u79c1\u94a5\u7684\u7ec4\u5408\u8fdb\u884c\u6570\u636e\u52a0\u5bc6\u548c\u89e3\u5bc6\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fddCentOS\u670d\u52a1\u5668\u4f7f\u7528\u6700\u65b0\u7248\u672c\u7684SSH\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u68c0\u67e5\u5f53\u524dSSH\u7684\u7248\u672c\uff1a<\/p>\n<pre>ssh -V<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5982\u679c\u60a8\u7684\u7cfb\u7edf\u4e2d\u6ca1\u6709\u5b89\u88c5SSH\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\uff1a<\/p>\n<pre>yum install openssh-server<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u9700\u8981\u5bf9SSH\u8fdb\u884c\u4e00\u4e9b\u914d\u7f6e\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u7981\u7528SSH\u7684root\u767b\u5f55\u3002\u8fd9\u662f\u56e0\u4e3aroot\u7528\u6237\u5177\u6709\u6700\u9ad8\u6743\u9650\uff0c\u5f88\u5bb9\u6613\u53d7\u5230\u653b\u51fb\u8005\u7684\u653b\u51fb\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91SSH\u914d\u7f6e\u6587\u4ef6\u6765\u7981\u7528root\u767b\u5f55\uff1a<\/p>\n<pre>vi \/etc\/ssh\/sshd_config<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u627e\u5230\u4ee5\u4e0b\u884c\uff0c\u5e76\u5c06\u5176\u4fee\u6539\u4e3ano\uff1a<\/p>\n<pre>PermitRootLogin no<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002\u7136\u540e\uff0c\u91cd\u65b0\u52a0\u8f7dSSH\u670d\u52a1\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\uff1a<\/p>\n<pre>systemctl reload sshd<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u66f4\u5f3a\u5927\u7684\u5bc6\u7801\u7b56\u7565\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91PAM\uff08Pluggable Authentication Modules\uff09\u914d\u7f6e\u6587\u4ef6\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre>vi \/etc\/pam.d\/system-auth<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u627e\u5230\u4ee5\u4e0b\u884c\uff0c\u5e76\u5c06\u5176\u4fee\u6539\u4e3a\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre>password    requisite     pam_pwquality.so try_first_pass retry=3 dcredit=-1 ucredit=-1 lcredit=-1 ocredit=-1 minlen=8<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u5c06\u8bbe\u7f6e\u5bc6\u7801\u7b56\u7565\u8981\u6c42\u5bc6\u7801\u81f3\u5c11\u5305\u542b8\u4e2a\u5b57\u7b26\uff0c\u5e76\u4e14\u5fc5\u987b\u8981\u6709\u4e00\u4e2a\u6570\u5b57\u3001\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\u3001\u4e00\u4e2a\u5c0f\u5199\u5b57\u6bcd\u548c\u4e00\u4e2a\u7279\u6b8a\u5b57\u7b26\u3002<\/p>\n<p>\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u914d\u7f6eSSH\u7684\u5b89\u5168\u9009\u9879\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91SSH\u914d\u7f6e\u6587\u4ef6\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre>vi \/etc\/ssh\/sshd_config<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u627e\u5230\u4ee5\u4e0b\u884c\uff0c\u5e76\u5c06\u5176\u4fee\u6539\u4e3a\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre>PermitEmptyPasswords no\nMaxAuthTries 3\nAllowUsers username<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u5c06\u7981\u6b62\u7a7a\u5bc6\u7801\u767b\u5f55\uff0c\u9650\u5236\u8eab\u4efd\u9a8c\u8bc1\u5c1d\u8bd5\u7684\u6b21\u6570\u4e3a3\u6b21\uff0c\u5e76\u4e14\u4ec5\u5141\u8bb8\u6307\u5b9a\u7684\u7528\u6237\u767b\u5f55\u3002<\/p>\n<p>\u6700\u540e\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u516c\u94a5\u8ba4\u8bc1\u6765\u63d0\u9ad8SSH\u7684\u5b89\u5168\u6027\u3002\u9996\u5148\uff0c\u5728\u5ba2\u6237\u7aef\u4e0a\u751f\u6210\u516c\u94a5\u548c\u79c1\u94a5\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u751f\u6210\uff1a<\/p>\n<pre>ssh-keygen<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7136\u540e\uff0c\u5c06\u516c\u94a5\u6dfb\u52a0\u5230\u670d\u52a1\u5668\u7684authorized_keys\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre>ssh-copy-id username@server_ip<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8f93\u5165\u670d\u52a1\u5668\u5bc6\u7801\u540e\uff0c\u516c\u94a5\u5c06\u81ea\u52a8\u590d\u5236\u5230\u670d\u52a1\u5668\u4e0a\u3002\u8fd9\u6837\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528\u79c1\u94a5\u6765\u8fdb\u884c\u8eab\u4efd\u8ba4\u8bc1\uff0c\u800c\u65e0\u9700\u8f93\u5165\u5bc6\u7801\u3002<\/p>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u6211\u4eec\u5df2\u7ecf\u6210\u529f\u5730\u63d0\u9ad8\u4e86CentOS\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u5f53\u60a8\u8fdb\u884c\u8fdc\u7a0b\u767b\u5f55\u65f6\uff0c\u4f7f\u7528SSH\u534f\u8bae\u5c06\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u4f20\u8f93\u548c\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002<\/p>\n<p>\u603b\u7ed3:<br \/>\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528SSH\u4fdd\u62a4CentOS\u670d\u52a1\u5668\u3002\u901a\u8fc7\u7981\u7528root\u767b\u5f55\u3001\u914d\u7f6e\u5bc6\u7801\u7b56\u7565\u3001\u8bbe\u7f6e\u5b89\u5168\u9009\u9879\u548c\u4f7f\u7528\u516c\u94a5\u8ba4\u8bc1\uff0c\u6211\u4eec\u53ef\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u4f7f\u7528SSH\u534f\u8bae\u8fdb\u884c\u8fdc\u7a0b\u767b\u5f55\u53ef\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u4f20\u8f93\u548c\u670d\u52a1\u5668\u7684\u5b89\u5168\u3002\u4f5c\u4e3a\u670d\u52a1\u5668\u7ba1\u7406\u8005\uff0c\u6211\u4eec\u5e94\u8be5\u65f6\u523b\u5173\u6ce8\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\uff0c\u5b9a\u671f\u68c0\u67e5\u548c\u66f4\u65b0\u76f8\u5173\u914d\u7f6e\uff0c\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528\u5b89\u5168\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff08SSH\uff09\u4fdd\u62a4CentOS\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":"<p>\u5982\u4f55\u4f7f\u7528\u5b89\u5168\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff08ssh\uff09\u4fdd\u62a4centos\u670d\u52a1\u5668 \u968f\u7740\u7f51\u7edc\u7684\u53d1\u5c55\uff0c\u8fdc\u7a0b\u767b\u5f55\u670d\u52a1\u5668\u6210\u4e3a\u4e86\u7ba1\u7406\u670d\u52a1\u5668\u5fc5\u4e0d\u53ef\u5c11\u7684\u65b9\u5f0f\u3002\u7136\u800c\uff0c\u4f20\u7edf\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff08\u5982telnet\uff09\u5b58\u5728\u5b89\u5168\u6027\u95ee\u9898\uff0c\u56e0\u6b64SSH\uff08Secure Shell\uff09\u8fc5\u901f\u6210\u4e3a\u4e86\u9996\u9009\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u5982\u4f55\u4f7f\u7528SSH\u4fdd\u62a4CentOS\u670d\u52a1\u5668\uff0c\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002 SSH\u662f\u4e00\u79cd\u52a0\u5bc6\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u53ef\u4ee5\u5728\u4e0d\u5b89\u5168\u7684\u7f51\u7edc\u4e2d\u5b89\u5168\u5730\u8fdb\u884c\u8fdc\u7a0b\u767b\u5f55\u3002\u5b83\u4f7f\u7528\u4e86\u516c\u94a5\u52a0\u5bc6\u6280\u672f\u6765\u9a8c\u8bc1\u670d\u52a1\u5668\u7684\u8eab\u4efd\uff0c\u5e76\u901a\u8fc7\u516c\u94a5\u548c\u79c1\u94a5\u7684\u7ec4\u5408\u8fdb\u884c\u6570\u636e\u52a0\u5bc6\u548c\u89e3\u5bc6\u3002 \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fddCentOS\u670d\u52a1\u5668\u4f7f\u7528\u6700\u65b0\u7248\u672c\u7684SSH\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u68c0\u67e5\u5f53\u524dSSH\u7684\u7248\u672c\uff1a ssh -V \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c\u60a8\u7684\u7cfb\u7edf\u4e2d\u6ca1\u6709\u5b89\u88c5SSH\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\uff1a yum install openssh-server \u767b\u5f55\u540e\u590d\u5236 \u5728\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u9700\u8981\u5bf9SSH\u8fdb\u884c\u4e00\u4e9b\u914d\u7f6e\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002 \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u7981\u7528SSH\u7684root\u767b\u5f55\u3002\u8fd9\u662f\u56e0\u4e3aroot\u7528\u6237\u5177\u6709\u6700\u9ad8\u6743\u9650\uff0c\u5f88\u5bb9\u6613\u53d7\u5230\u653b\u51fb\u8005\u7684\u653b\u51fb\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91SSH\u914d\u7f6e\u6587\u4ef6\u6765\u7981\u7528root\u767b\u5f55\uff1a vi \/etc\/ssh\/sshd_config \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 \u627e\u5230\u4ee5\u4e0b\u884c\uff0c\u5e76\u5c06\u5176\u4fee\u6539\u4e3ano\uff1a PermitRootLogin no \u767b\u5f55\u540e\u590d\u5236 \u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002\u7136\u540e\uff0c\u91cd\u65b0\u52a0\u8f7dSSH\u670d\u52a1\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\uff1a systemctl reload sshd \u767b\u5f55\u540e\u590d\u5236 \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u66f4\u5f3a\u5927\u7684\u5bc6\u7801\u7b56\u7565\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91PAM\uff08Pluggable Authentication Modules\uff09\u914d\u7f6e\u6587\u4ef6\u6765\u5b9e\u73b0\uff1a vi \/etc\/pam.d\/system-auth \u767b\u5f55\u540e\u590d\u5236 \u627e\u5230\u4ee5\u4e0b\u884c\uff0c\u5e76\u5c06\u5176\u4fee\u6539\u4e3a\u4ee5\u4e0b\u5185\u5bb9\uff1a password requisite pam_pwquality.so try_first_pass retry=3 dcredit=-1 ucredit=-1 lcredit=-1 ocredit=-1 minlen=8 \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u8bbe\u7f6e\u5bc6\u7801\u7b56\u7565\u8981\u6c42\u5bc6\u7801\u81f3\u5c11\u5305\u542b8\u4e2a\u5b57\u7b26\uff0c\u5e76\u4e14\u5fc5\u987b\u8981\u6709\u4e00\u4e2a\u6570\u5b57\u3001\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\u3001\u4e00\u4e2a\u5c0f\u5199\u5b57\u6bcd\u548c\u4e00\u4e2a\u7279\u6b8a\u5b57\u7b26\u3002 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