{"id":61422,"date":"2025-04-29T12:12:52","date_gmt":"2025-04-29T04:12:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/61422\/"},"modified":"2025-04-29T12:12:52","modified_gmt":"2025-04-29T04:12:52","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8linux%e4%b8%8a%e9%85%8d%e7%bd%ae%e9%ab%98%e5%8f%af%e7%94%a8%e7%9a%84%e8%bf%9c%e7%a8%8b%e7%99%bb%e5%bd%95%ef%bc%88%e5%a6%82ssh%e5%92%8ctelnet%ef%bc%89-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/61422\/","title":{"rendered":"\u5982\u4f55\u5728Linux\u4e0a\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\uff08\u5982SSH\u548cTelnet\uff09"},"content":{"rendered":"<p>\u5982\u4f55\u5728\u4e0a\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\uff08\u5982ssh\u548ctelnet\uff09<\/p>\n<p>\u6458\u8981\uff1a\u8fdc\u7a0b\u767b\u5f55\u662fLinux\u7cfb\u7edf\u4e2d\u975e\u5e38\u5e38\u7528\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u5b83\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8fde\u63a5\u5230\u8fdc\u7a0b\u4e3b\u673a\u5e76\u8fdb\u884c\u64cd\u4f5c\u3002\u5728\u5b9e\u9645\u8fd0\u7528\u4e2d\uff0c\u4e3a\u4e86\u786e\u4fdd\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u548c\u5b89\u5168\u6027\uff0c\u9700\u8981\u5c06\u8fdc\u7a0b\u767b\u5f55\u670d\u52a1\u914d\u7f6e\u4e3a\u9ad8\u53ef\u7528\u6a21\u5f0f\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728Linux\u4e0a\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\uff0c\u5305\u62ecSSH\u548cTelnet\uff0c\u5e76\u63d0\u4f9b\u76f8\u5173\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001SSH\u914d\u7f6e<\/p>\n<p>SSH\uff08Secure Shell\uff09\u662f\u4e00\u79cd\u57fa\u4e8e\u52a0\u5bc6\u6280\u672f\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff0c\u901a\u8fc7SSH\u53ef\u4ee5\u5728\u4e0d\u5b89\u5168\u7684\u7f51\u7edc\u4e2d\u5b9e\u73b0\u5b89\u5168\u7684\u8fdc\u7a0b\u767b\u5f55\u3002\u4e0b\u9762\u662f\u914d\u7f6eSSH\u9ad8\u53ef\u7528\u7684\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u5b89\u88c5\u914d\u7f6eSSH\u670d\u52a1\u5668<br \/>\u5728Linux\u7cfb\u7edf\u4e2d\uff0cSSH\u670d\u52a1\u5668\u5e38\u7528\u7684\u8f6f\u4ef6\u5305\u662fOpenSSH\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fddOpenSSH\u8f6f\u4ef6\u5305\u5df2\u7ecf\u5b89\u88c5\u5728\u4e3b\u673a\u4e0a\u3002<\/li>\n<\/ol>\n<p>$ sudo apt-get install openssh-server # Ubuntu\/Debian<br \/>$ sudo yum install openssh-server # CentOS\/RHEL<\/p>\n<p>\u5b89\u88c5\u5b8c\u6bd5\u540e\uff0cSSH\u670d\u52a1\u5668\u4f1a\u81ea\u52a8\u542f\u52a8\u5e76\u76d1\u542c\u9ed8\u8ba4\u7aef\u53e322\u3002<\/p>\n<ol>\n<li>\u914d\u7f6eSSH\u901a\u4fe1\u5bc6\u94a5<br \/>\u4e3a\u4e86\u5b9e\u73b0\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528SSH\u901a\u4fe1\u5bc6\u94a5\u5bf9\u6765\u8fdb\u884c\u8ba4\u8bc1\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u4f20\u7edf\u7684\u7528\u6237\u540d\/\u5bc6\u7801\u3002<\/li>\n<\/ol>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u751f\u6210SSH\u5bc6\u94a5\u5bf9\uff1a<\/p>\n<p>$ ssh-keygen -t rsa<\/p>\n<p>\u7136\u540e\uff0c\u5c06\u516c\u94a5\u590d\u5236\u5230\u6240\u6709\u8fdc\u7a0b\u4e3b\u673a\u4e0a\uff1a<\/p>\n<p>$ ssh-copy-id remote_host<\/p>\n<ol>\n<li>\u914d\u7f6eSSH\u8d1f\u8f7d\u5747\u8861<br \/>\u4e3a\u4e86\u5b9e\u73b0SSH\u7684\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u6765\u5b9e\u73b0\u5c06\u8fdc\u7a0b\u767b\u5f55\u8bf7\u6c42\u5206\u53d1\u5230\u591a\u4e2a\u4e3b\u673a\u4e0a\u3002\u5e38\u7528\u7684\u8d1f\u8f7d\u5747\u8861\u8f6f\u4ef6\u6709HAProxy\u548cNginx\u3002<\/li>\n<\/ol>\n<p>\u4ee5HAProxy\u4e3a\u4f8b\uff0c\u9996\u5148\u5b89\u88c5HAProxy\uff1a<\/p>\n<p>$ sudo apt-get install haproxy # Ubuntu\/Debian<br \/>$ sudo yum install haproxy # CentOS\/RHEL<\/p>\n<p>\u7136\u540e\uff0c\u7f16\u8f91HAProxy\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n<p>$ sudo vi \/etc\/haproxy\/haproxy.cfg<\/p>\n<p>\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e\u5757\uff1a<\/p>\n<p>frontend ssh<\/p>\n<pre>bind *:22\nmode tcp\ndefault_backend ssh_servers\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>backend ssh_servers<\/p>\n<pre>mode tcp\nbalance roundrobin\nserver ssh1 192.168.1.101:22 check\nserver ssh2 192.168.1.102:22 check\nserver ssh3 192.168.1.103:22 check\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\uff0c\u7136\u540e\u91cd\u65b0\u542f\u52a8HAProxy\u670d\u52a1\uff1a<\/p>\n<p>$ sudo systemctl restart haproxy<\/p>\n<p>\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528HAProxy\u63d0\u4f9b\u7684IP\u5730\u5740\u8fde\u63a5\u5230SSH\u670d\u52a1\u5668\u3002<\/p>\n<p>\u4e8c\u3001Telnet\u914d\u7f6e<\/p>\n<p>Telnet\u662f\u4e00\u79cd\u7528\u4e8e\u8fdc\u7a0b\u767b\u5f55\u7684\u534f\u8bae\uff0c\u4f46\u5b83\u6ca1\u6709\u50cfSSH\u90a3\u6837\u7684\u52a0\u5bc6\u529f\u80fd\uff0c\u56e0\u6b64\u4e0d\u9002\u5408\u5728\u4e0d\u5b89\u5168\u7684\u7f51\u7edc\u4e2d\u4f7f\u7528\u3002\u4ee5\u4e0b\u662f\u914d\u7f6eTelnet\u9ad8\u53ef\u7528\u7684\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u5b89\u88c5\u914d\u7f6eTelnet\u670d\u52a1\u5668<br \/>\u5728Linux\u7cfb\u7edf\u4e2d\uff0cTelnet\u670d\u52a1\u5668\u5e38\u7528\u7684\u8f6f\u4ef6\u5305\u662ftelnetd\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fddtelnetd\u8f6f\u4ef6\u5305\u5df2\u7ecf\u5b89\u88c5\u5728\u4e3b\u673a\u4e0a\uff08\u4f8b\uff1aCentOS\/RHEL\uff09\uff1a<\/li>\n<\/ol>\n<p>$ sudo yum install telnet-server<\/p>\n<p>\u5b89\u88c5\u5b8c\u6bd5\u540e\uff0cTelnet\u670d\u52a1\u5668\u4f1a\u81ea\u52a8\u542f\u52a8\u5e76\u76d1\u542c\u9ed8\u8ba4\u7aef\u53e323\u3002<\/p>\n<ol>\n<li>\u914d\u7f6eTelnet\u8d1f\u8f7d\u5747\u8861<br \/>\u4e0eSSH\u7c7b\u4f3c\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u6765\u5b9e\u73b0Telnet\u7684\u9ad8\u53ef\u7528\u3002\u5728Linux\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528iptables\u548cnetfilter\u6765\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<\/ol>\n<p>\u9996\u5148\uff0c\u7f16\u8f91iptables\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n<p>$ sudo vi \/etc\/sysctl.conf<\/p>\n<p>\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n<p>net.ipv4.ip_forward = 1<\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\uff0c\u7136\u540e\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n<p>$ sudo sysctl -p<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u4ee5\u914d\u7f6e\u8d1f\u8f7d\u5747\u8861\uff1a<\/p>\n<p>$ sudo iptables -t nat -A PREROUTING -p tcp &#8211;dport 23 -j DNAT &#8211;to-destination :23 <br \/>$ sudo iptables -t nat -A POSTROUTING -j MASQUERADE <\/p>\n<p>\u5176\u4e2d\uff0c \u4e3a\u76ee\u6807Telnet\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3002 <\/p>\n<ol>\n<li>\u914d\u7f6e\u670d\u52a1\u53d1\u73b0<br \/>\u4e3a\u4e86\u5b9e\u73b0\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u9700\u8981\u60f3\u529e\u6cd5\u5c06\u5ba2\u6237\u7aef\u8bf7\u6c42\u5206\u53d1\u5230\u591a\u4e2aTelnet\u670d\u52a1\u5668\u4e0a\u3002\u5e38\u7528\u7684\u670d\u52a1\u53d1\u73b0\u8f6f\u4ef6\u6709ZooKeeper\u548cConsul\u3002<\/li>\n<\/ol>\n<p>\u4ee5ZooKeeper\u4e3a\u4f8b\uff0c\u9996\u5148\u5b89\u88c5ZooKeeper\uff1a<\/p>\n<p>$ sudo apt-get install zookeeperd # Ubuntu\/Debian<br \/>$ sudo yum install zookeeper # CentOS\/RHEL<\/p>\n<p>\u7136\u540e\uff0c\u7f16\u8f91ZooKeeper\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n<p>$ sudo vi \/etc\/zookeeper\/conf\/zoo.cfg<\/p>\n<p>\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n<p>server.1=zoo1:2888:3888<br \/>server.2=zoo2:2888:3888<br \/>server.3=zoo3:2888:3888<\/p>\n<p>\u5176\u4e2d\uff0czoo1\u3001zoo2\u3001zoo3\u4e3aZooKeeper\u670d\u52a1\u5668\u7684\u4e3b\u673a\u540d\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\uff0c\u7136\u540e\u91cd\u65b0\u542f\u52a8ZooKeeper\u670d\u52a1\uff1a<\/p>\n<p>$ sudo service zookeeper restart<\/p>\n<p>\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528ZooKeeper\u63d0\u4f9b\u7684IP\u5730\u5740\u8fde\u63a5\u5230Telnet\u670d\u52a1\u5668\u3002<\/p>\n<p>\u7ed3\u8bba<br \/>\u901a\u8fc7\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\u670d\u52a1\uff0c\u6211\u4eec\u53ef\u4ee5\u786e\u4fdd\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u548c\u5b89\u5168\u6027\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u5728Linux\u4e0a\u914d\u7f6eSSH\u548cTelnet\u7684\u9ad8\u53ef\u7528\uff0c\u5e76\u63d0\u4f9b\u4e86\u76f8\u5173\u4ee3\u7801\u793a\u4f8b\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\uff0c\u8c22\u8c22\u9605\u8bfb\uff01<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5728Linux\u4e0a\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\uff08\u5982SSH\u548cTelnet\uff09\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\u5728\u4e0a\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\uff08\u5982ssh\u548ctelnet\uff09 \u6458\u8981\uff1a\u8fdc\u7a0b\u767b\u5f55\u662fLinux\u7cfb\u7edf\u4e2d\u975e\u5e38\u5e38\u7528\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u5b83\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8fde\u63a5\u5230\u8fdc\u7a0b\u4e3b\u673a\u5e76\u8fdb\u884c\u64cd\u4f5c\u3002\u5728\u5b9e\u9645\u8fd0\u7528\u4e2d\uff0c\u4e3a\u4e86\u786e\u4fdd\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u548c\u5b89\u5168\u6027\uff0c\u9700\u8981\u5c06\u8fdc\u7a0b\u767b\u5f55\u670d\u52a1\u914d\u7f6e\u4e3a\u9ad8\u53ef\u7528\u6a21\u5f0f\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728Linux\u4e0a\u914d\u7f6e\u9ad8\u53ef\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\uff0c\u5305\u62ecSSH\u548cTelnet\uff0c\u5e76\u63d0\u4f9b\u76f8\u5173\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001SSH\u914d\u7f6e SSH\uff08Secure Shell\uff09\u662f\u4e00\u79cd\u57fa\u4e8e\u52a0\u5bc6\u6280\u672f\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff0c\u901a\u8fc7SSH\u53ef\u4ee5\u5728\u4e0d\u5b89\u5168\u7684\u7f51\u7edc\u4e2d\u5b9e\u73b0\u5b89\u5168\u7684\u8fdc\u7a0b\u767b\u5f55\u3002\u4e0b\u9762\u662f\u914d\u7f6eSSH\u9ad8\u53ef\u7528\u7684\u6b65\u9aa4\uff1a \u5b89\u88c5\u914d\u7f6eSSH\u670d\u52a1\u5668\u5728Linux\u7cfb\u7edf\u4e2d\uff0cSSH\u670d\u52a1\u5668\u5e38\u7528\u7684\u8f6f\u4ef6\u5305\u662fOpenSSH\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fddOpenSSH\u8f6f\u4ef6\u5305\u5df2\u7ecf\u5b89\u88c5\u5728\u4e3b\u673a\u4e0a\u3002 $ sudo apt-get install openssh-server # Ubuntu\/Debian$ sudo yum install openssh-server # CentOS\/RHEL \u5b89\u88c5\u5b8c\u6bd5\u540e\uff0cSSH\u670d\u52a1\u5668\u4f1a\u81ea\u52a8\u542f\u52a8\u5e76\u76d1\u542c\u9ed8\u8ba4\u7aef\u53e322\u3002 \u914d\u7f6eSSH\u901a\u4fe1\u5bc6\u94a5\u4e3a\u4e86\u5b9e\u73b0\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528SSH\u901a\u4fe1\u5bc6\u94a5\u5bf9\u6765\u8fdb\u884c\u8ba4\u8bc1\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u4f20\u7edf\u7684\u7528\u6237\u540d\/\u5bc6\u7801\u3002 \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u751f\u6210SSH\u5bc6\u94a5\u5bf9\uff1a $ ssh-keygen -t rsa \u7136\u540e\uff0c\u5c06\u516c\u94a5\u590d\u5236\u5230\u6240\u6709\u8fdc\u7a0b\u4e3b\u673a\u4e0a\uff1a $ ssh-copy-id remote_host \u914d\u7f6eSSH\u8d1f\u8f7d\u5747\u8861\u4e3a\u4e86\u5b9e\u73b0SSH\u7684\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u6765\u5b9e\u73b0\u5c06\u8fdc\u7a0b\u767b\u5f55\u8bf7\u6c42\u5206\u53d1\u5230\u591a\u4e2a\u4e3b\u673a\u4e0a\u3002\u5e38\u7528\u7684\u8d1f\u8f7d\u5747\u8861\u8f6f\u4ef6\u6709HAProxy\u548cNginx\u3002 \u4ee5HAProxy\u4e3a\u4f8b\uff0c\u9996\u5148\u5b89\u88c5HAProxy\uff1a $ sudo apt-get install haproxy # Ubuntu\/Debian$ sudo yum install haproxy # CentOS\/RHEL \u7136\u540e\uff0c\u7f16\u8f91HAProxy\u914d\u7f6e\u6587\u4ef6\uff1a $ sudo vi \/etc\/haproxy\/haproxy.cfg \u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e\u5757\uff1a frontend ssh bind *:22 [&hellip;]<\/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-61422","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/61422","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=61422"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/61422\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=61422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=61422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=61422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}