{"id":379,"date":"2026-08-27T21:12:58","date_gmt":"2026-08-27T13:12:58","guid":{"rendered":"https:\/\/www.idcy.com\/help\/news\/10379.html"},"modified":"2026-08-27T21:12:58","modified_gmt":"2026-08-27T13:12:58","slug":"%e6%96%b0%e5%8a%a0%e5%9d%a1kvm-vps%e7%9a%84linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e5%9f%ba%e7%ba%bf%ef%bc%9assh%e3%80%81%e9%98%b2%e7%81%ab%e5%a2%99%e4%b8%8e%e5%ae%9d%e5%a1%94%e9%9d%a2","status":"publish","type":"post","link":"https:\/\/www.idcy.com\/help\/docs\/10379.html","title":{"rendered":"\u65b0\u52a0\u5761KVM VPS\u7684Linux\u670d\u52a1\u5668\u5b89\u5168\u57fa\u7ebf\uff1aSSH\u3001\u9632\u706b\u5899\u4e0e\u5b9d\u5854\u9762\u677f\u914d\u7f6e"},"content":{"rendered":"<p>\u90e8\u7f72\u5728\u4e91\u670d\u52a1\u5668\u4e0a\u7684\u4e1a\u52a1\uff0c\u5b89\u5168\u57fa\u7ebf\u901a\u5e38\u5e94\u65e9\u4e8e\u4e1a\u52a1\u4e0a\u7ebf\u3002\u672c\u6587\u4ee5<strong>\u65b0\u52a0\u5761\u8282\u70b9KVM\u5b9e\u4f8b<\/strong>\u4e3a\u4f8b\uff0c\u6574\u7406\u4e00\u5957\u9002\u5408\u5b9d\u5854\u9762\u677f\u73af\u5883\u7684 Linux \u5b89\u5168\u914d\u7f6e\u6b65\u9aa4\u3002\u4ee5\u4e0b\u64cd\u4f5c\u5747\u4ee5\u5907\u4efd\u4e3a\u524d\u63d0\uff0c\u547d\u4ee4\u4ec5\u7528\u4e8e\u67e5\u770b\u3001\u5907\u4efd\u548c\u8c03\u6574\u8bbf\u95ee\u63a7\u5236\uff0c\u4e0d\u4f1a\u6e05\u7a7a\u73b0\u6709\u6570\u636e\u3002\u4e0d\u540c\u7cfb\u7edf\u7248\u672c\u53ef\u80fd\u5b58\u5728\u5dee\u5f02\uff0c\u8bf7\u4ee5\u5f53\u524d\u73af\u5883\u53ca\u5b98\u65b9\u6587\u6863\u4e3a\u51c6\u3002<\/p>\n<p>\u672c\u6587\u53ef\u4f5c\u4e3a\u4e00\u4efd\u7b80\u660e\u7684<strong>Linux\u7cfb\u7edf\u52a0\u56fa\u6e05\u5355<\/strong>\uff0c\u5e2e\u52a9\u8fd0\u7ef4\u4eba\u5458\u5728\u4e0d\u5f71\u54cd\u4e1a\u52a1\u8fde\u7eed\u6027\u7684\u524d\u63d0\u4e0b\u5b8c\u6210\u9996\u6b21\u52a0\u56fa\u3002\u82e5\u60a8\u6b64\u524d\u6ca1\u6709\u5b89\u5168\u57fa\u7ebf\u7684\u6267\u884c\u7ecf\u9a8c\uff0c\u5efa\u8bae\u5148\u5728\u6d4b\u8bd5\u5b9e\u4f8b\u6216\u5feb\u7167\u73af\u5883\u4e2d\u5b8c\u6574\u8d70\u4e00\u904d\uff0c\u786e\u8ba4\u65e0\u8bef\u540e\u518d\u7528\u4e8e\u751f\u4ea7\u73af\u5883\u3002<\/p>\n<h2>\u4e00\u3001\u9002\u7528\u73af\u5883\u4e0e\u5907\u4efd\u8981\u6c42<\/h2>\n<p>\u9002\u7528\u7cfb\u7edf\u5efa\u8bae\u4ee5 Ubuntu 22.04\/20.04\u3001AlmaLinux 9\u3001Rocky Linux 9 \u7b49\u4e3b\u6d41\u957f\u671f\u652f\u6301\u7248\u672c\u4e3a\u57fa\u7840\u3002\u6267\u884c\u914d\u7f6e\u524d\uff0c\u8bf7\u81f3\u5c11\u5907\u4efd SSH \u914d\u7f6e\u76ee\u5f55\u3001\u5b9d\u5854\u9762\u677f\u7ad9\u70b9\u76ee\u5f55\u3001\u6570\u636e\u5e93\u4ee5\u53ca\u5173\u952e\u914d\u7f6e\u6587\u4ef6\u3002\u7248\u672c\u4f1a\u968f\u65f6\u95f4\u53d8\u5316\uff0c\u8bf7\u4ee5\u53d1\u884c\u7248\u5b98\u65b9\u6587\u6863\u548c\u5f53\u524d\u73af\u5883\u4e3a\u51c6\u3002<\/p>\n<pre><code>sudo tar czvf \/home\/backup_ssh_$(date +%F).tar.gz \/etc\/ssh \/etc\/ssl<\/code><\/pre>\n<p>\u5982\u4f7f\u7528\u5b9d\u5854\u9762\u677f\uff0c\u53ef\u5728\u9762\u677f\u201c\u8ba1\u5212\u4efb\u52a1\u201d\u4e2d\u5907\u4efd\u6570\u636e\u5e93\u548c\u7f51\u7ad9\uff0c\u6216\u4f7f\u7528 rsync \u5c06\u8fdc\u7a0b\u76ee\u5f55\u540c\u6b65\u5230\u72ec\u7acb\u5b58\u50a8\u3002\u5907\u4efd\u5b8c\u6210\u540e\uff0c\u786e\u8ba4\u5907\u4efd\u6587\u4ef6\u5927\u5c0f\u548c\u5185\u5bb9\u53ef\u8bfb\uff0c\u518d\u8fdb\u5165\u4e0b\u4e00\u6b65\u3002<\/p>\n<h2>\u4e8c\u3001SSH \u767b\u5f55\u52a0\u56fa\u4e0e\u5bc6\u94a5\u8ba4\u8bc1<\/h2>\n<p>\u5148\u68c0\u67e5\u5f53\u524d SSH \u670d\u52a1\u72b6\u6001\uff1a<\/p>\n<pre><code>sudo systemctl status sshd<\/code><\/pre>\n<p>\u4fee\u6539 SSH \u914d\u7f6e\u524d\uff0c\u590d\u5236\u539f\u6587\u4ef6\uff1a<\/p>\n<pre><code>sudo cp \/etc\/ssh\/sshd_config \/etc\/ssh\/sshd_config.bak.$(date +%F)<\/code><\/pre>\n<p>\u5efa\u8bae\u65b0\u5efa\u666e\u901a\u7528\u6237\u5e76\u914d\u7f6e sudo \u6743\u9650\uff0c\u7136\u540e\u5728\u786e\u8ba4\u5bc6\u94a5\u53ef\u7528\u540e\uff0c\u518d\u9010\u6b65\u5173\u95ed root \u5bc6\u7801\u767b\u5f55\u3002\u4fee\u6539 <code>\/etc\/ssh\/sshd_config<\/code> \u65f6\uff0c\u53ef\u53c2\u8003\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<pre><code>PermitRootLogin prohibit-password\nPasswordAuthentication no\nPubkeyAuthentication yes<\/code><\/pre>\n<p>\u4fdd\u5b58\u540e\u6267\u884c <code>sudo sshd -t<\/code> \u68c0\u67e5\u8bed\u6cd5\uff0c\u518d\u901a\u8fc7 <code>sudo systemctl restart sshd<\/code> \u91cd\u542f\u670d\u52a1\u3002\u9a8c\u8bc1\u65f6\uff0c\u4fdd\u7559\u5f53\u524d\u4f1a\u8bdd\uff0c\u53e6\u5f00\u7ec8\u7aef\u4f7f\u7528\u6307\u5b9a\u5bc6\u94a5\u767b\u5f55\uff0c\u786e\u8ba4\u6210\u529f\u540e\u518d\u5173\u95ed\u5f53\u524d\u8fde\u63a5\u3002<\/p>\n<h2>\u4e09\u3001\u9632\u706b\u5899\u6700\u5c0f\u5f00\u653e\u7b56\u7565<\/h2>\n<p>\u9632\u706b\u5899\u539f\u5219\u662f\u4ec5\u653e\u884c\u4e1a\u52a1\u548c\u7ba1\u7406\u5fc5\u9700\u7aef\u53e3\u3002\u4f7f\u7528 firewalld \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>sudo systemctl status firewalld\nsudo firewall-cmd --permanent --add-service=ssh\nsudo firewall-cmd --permanent --add-service=http\nsudo firewall-cmd --permanent --add-service=https\nsudo firewall-cmd --reload<\/code><\/pre>\n<p>\u5b9d\u5854\u9762\u677f\u7ba1\u7406\u7aef\u53e3\u9700\u4ee5\u9762\u677f\u5b9e\u9645\u8bbe\u7f6e\u503c\u4e3a\u51c6\uff0c\u4e0d\u8981\u7167\u642c\u793a\u4f8b\u7aef\u53e3\u3002\u653e\u884c\u540e\uff0c\u53ef\u4ece\u5916\u90e8\u6267\u884c\u7aef\u53e3\u626b\u63cf\u6216 <code>nc -zv \u670d\u52a1\u5668IP \u7aef\u53e3<\/code> \u9a8c\u8bc1\u8fde\u901a\u6027\u3002<\/p>\n<h2>\u56db\u3001\u5b9d\u5854\u9762\u677f\u8bbf\u95ee\u63a7\u5236\u4e0e\u5b89\u5168\u8bbe\u7f6e<\/h2>\n<p>\u9762\u677f\u7aef\u5b89\u5168\u8bbe\u7f6e\u4e2d\uff0c\u8bbf\u95ee\u5165\u53e3\u3001\u9762\u677f SSL \u548c\u6388\u6743 IP \u662f\u4e09\u4e2a\u57fa\u7840\u63a7\u5236\u9879\u3002\u767b\u5f55\u540e\u5efa\u8bae\u4fee\u6539\u9ed8\u8ba4\u5165\u53e3\u3001\u5f00\u542f\u9762\u677f SSL\uff0c\u5e76\u4ec5\u5141\u8bb8\u529e\u516c\u6216\u8fd0\u7ef4\u51fa\u53e3 IP \u8bbf\u95ee\u9762\u677f\u7aef\u53e3\u3002\u5b9a\u671f\u68c0\u67e5\u9762\u677f\u7528\u6237\u6743\u9650\uff0c\u79fb\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u8d26\u53f7\u3002<\/p>\n<p>\u5982\u679c\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u9047\u5230\u5165\u53e3\u3001\u8bc1\u4e66\u6216\u9632\u706b\u5899\u653e\u884c\u95ee\u9898\uff0c\u53ef\u53c2\u8003<a href=\"https:\/\/www.idcy.com\/help\/?help_category=tech-docs\" title=\"\u5b9d\u5854\u9762\u677f\u670d\u52a1\u5668\u5b89\u5168\u8bbe\u7f6e\" class=\"idcy-auto-link\">\u5b9d\u5854\u9762\u677f\u670d\u52a1\u5668\u5b89\u5168\u8bbe\u7f6e<\/a>\u4e2d\u7684\u6b65\u9aa4\u8fdb\u884c\u6392\u67e5\uff0c\u5e76\u6309\u5f53\u524d\u9762\u677f\u7248\u672c\u8c03\u6574\u3002\u6ce8\u610f\u4e0d\u8981\u5c06\u9762\u677f\u7ba1\u7406\u7aef\u53e3\u66b4\u9732\u7ed9\u4e0d\u76f8\u5173\u7684\u516c\u7f51\u6765\u6e90\u3002<\/p>\n<h2>\u4e94\u3001\u81ea\u52a8\u66f4\u65b0\u4e0e\u65e5\u5fd7\u76d1\u63a7<\/h2>\n<p>\u5bf9\u5927\u591a\u6570\u957f\u671f\u8fd0\u884c\u5b9e\u4f8b\uff0c\u5efa\u8bae\u914d\u7f6e\u5b89\u5168\u66f4\u65b0\u3002Ubuntu\/Debian \u53ef\u4f7f\u7528 <code>unattended-upgrades<\/code>\uff0cRHEL \u7cfb\u53ef\u4f7f\u7528 <code>dnf-automatic<\/code>\u3002\u542f\u7528\u524d\u5148\u786e\u8ba4\u66f4\u65b0\u7b56\u7565\u4e0d\u4f1a\u81ea\u52a8\u91cd\u542f\u5173\u952e\u670d\u52a1\u3002<\/p>\n<pre><code>sudo apt install unattended-upgrades\nsudo dpkg-reconfigure -plow unattended-upgrades<\/code><\/pre>\n<p>\u540c\u65f6\u5efa\u8bae\u68c0\u67e5\u767b\u5f55\u5931\u8d25\u65e5\u5fd7\uff1a<\/p>\n<pre><code>sudo grep 'Failed password' \/var\/log\/auth.log | tail -n 20<\/code><\/pre>\n<p>\u5982\u9700\u66f4\u5b8c\u6574\u7684\u57fa\u7ebf\u8981\u6c42\uff0c\u4f8b\u5982\u5185\u6838\u53c2\u6570\u3001\u5ba1\u8ba1\u89c4\u5219\u548c\u767b\u5f55\u544a\u8b66\uff0c\u53ef\u53c2\u7167<a href=\"https:\/\/www.idcy.com\/help\/?help_category=tech-docs\" title=\"Linux\u670d\u52a1\u5668\u5b89\u5168\u914d\u7f6e\u6307\u5357\" class=\"idcy-auto-link\">Linux\u670d\u52a1\u5668\u5b89\u5168\u914d\u7f6e\u6307\u5357<\/a>\u8fdb\u4e00\u6b65\u6269\u5c55\u3002\u65e5\u5fd7\u4fdd\u7559\u5468\u671f\u53ef\u6839\u636e\u4e1a\u52a1\u8981\u6c42\u8c03\u6574\uff0c\u4f46\u81f3\u5c11\u4fdd\u7559 30 \u5929\u4ee5\u4fbf\u56de\u6eaf\u3002<\/p>\n<h2>\u516d\u3001\u9a8c\u8bc1\u4e0e\u56de\u6eda\u601d\u8def<\/h2>\n<p>\u5b8c\u6210\u4e0a\u8ff0\u914d\u7f6e\u540e\uff0c\u6309\u4ee5\u4e0b\u987a\u5e8f\u9a8c\u8bc1\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u65b0 SSH \u7528\u6237\u548c\u5bc6\u94a5\u4ece\u72ec\u7acb\u7ec8\u7aef\u767b\u5f55\uff0c\u786e\u8ba4 root \u5bc6\u7801\u767b\u5f55\u5df2\u88ab\u5b89\u5168\u7b56\u7565\u66ff\u4ee3\u3002<\/li>\n<li>\u8bbf\u95ee\u7f51\u7ad9\u4e1a\u52a1\uff0c\u786e\u8ba4 80\/443 \u7aef\u53e3\u6b63\u5e38\u3002<\/li>\n<li>\u4ece\u6388\u6743 IP \u8bbf\u95ee\u5b9d\u5854\u9762\u677f\u5165\u53e3\uff0c\u786e\u8ba4 HTTPS \u8bc1\u4e66\u548c\u767b\u5f55\u6d41\u7a0b\u6b63\u5e38\u3002<\/li>\n<\/ul>\n<p>\u56de\u6eda\u65f6\uff0c\u4f18\u5148\u4f7f\u7528\u914d\u7f6e\u5907\u4efd\u6587\u4ef6\u6062\u590d\u5bf9\u5e94\u670d\u52a1\uff0c\u4f8b\u5982 <code>sudo cp \/etc\/ssh\/sshd_config.bak.\u65e5\u671f \/etc\/ssh\/sshd_config<\/code>\u3002\u5982\u56e0\u9632\u706b\u5899\u89c4\u5219\u5bfc\u81f4\u8fdc\u7a0b\u8fde\u63a5\u4e2d\u65ad\uff0c\u53ef\u901a\u8fc7\u4e91\u670d\u52a1\u5546\u63a7\u5236\u53f0 VNC \u767b\u5f55\uff0c\u4e34\u65f6\u505c\u6b62\u9632\u706b\u5899\u670d\u52a1\u6216\u5bfc\u5165\u4e4b\u524d\u7684\u89c4\u5219\u5907\u4efd\u3002\u4e0d\u8981\u76f4\u63a5\u6e05\u7a7a\u5168\u90e8\u89c4\u5219\uff0c\u4ee5\u514d\u5f71\u54cd\u4e1a\u52a1\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u5728\u65b0\u52a0\u5761\u8282\u70b9\u90e8\u7f72\u7f51\u7ad9\u3001\u5f00\u53d1\u6d4b\u8bd5\u6216\u8f7b\u91cf\u4e1a\u52a1\u6269\u5c55\u65f6\uff0c\u4f7f\u7528<a href=\"https:\/\/www.idcy.com\/cloud\/sg\/\" title=\"\u65b0\u52a0\u5761KVM VPS\" class=\"idcy-auto-link\">\u65b0\u52a0\u5761KVM VPS<\/a>\u53ef\u4ee5\u66f4\u5feb\u83b7\u5f97\u5177\u5907\u8d44\u6e90\u9694\u79bb\u80fd\u529b\u7684\u5b9e\u4f8b\uff0c\u5e76\u5c06\u4ee5\u4e0a\u5b89\u5168\u57fa\u7ebf\u6d41\u7a0b\u4f5c\u4e3a\u521d\u59cb\u5316\u6b65\u9aa4\u3002\u4e0d\u540c\u5b9e\u4f8b\u89c4\u683c\u548c\u7f51\u7edc\u6761\u4ef6\u4e0b\uff0c\u5b9e\u9645\u8bbf\u95ee\u4e0e\u6027\u80fd\u8868\u73b0\u5b58\u5728\u5dee\u5f02\uff0c\u5efa\u8bae\u4ee5\u5957\u9910\u6d4b\u8bd5\u7ed3\u679c\u4e3a\u51c6\u3002<\/p>\n<p>\u914d\u7f6e\u5b8c\u6210\u540e\uff0c\u4ecd\u9700\u8981\u6301\u7eed\u5173\u6ce8\u7cfb\u7edf\u66f4\u65b0\u3001\u9762\u677f\u7248\u672c\u548c\u767b\u5f55\u65e5\u5fd7\u3002\u5982\u9700\u83b7\u53d6\u66f4\u9002\u5408\u5f53\u524d\u4e1a\u52a1\u7684\u5b9e\u4f8b\u914d\u7f6e\u5efa\u8bae\uff0c\u53ef\u8054\u7cfb<a href=\"https:\/\/www.idcy.com\/about\/\" title=\"\u4ebf\u8fbe\u7f51\u7edc\uff08IDCY GLOBAL\uff09\" class=\"idcy-auto-link\">\u4ebf\u8fbe\u7f51\u7edc\uff08IDCY GLOBAL\uff09<\/a>\uff0c\u7ed3\u5408\u4e1a\u52a1\u589e\u957f\u8bc4\u4f30\u5907\u4efd\u4e0e\u6269\u5bb9\u7b56\u7565\u3002<\/p>\n<h2>FAQ<\/h2>\n<h3>1. \u662f\u5426\u5fc5\u987b\u5173\u95ed\u5bc6\u7801\u767b\u5f55\uff1f<\/h3>\n<p>\u4e0d\u4e00\u5b9a\u3002\u5bf9\u4e8e\u65b0\u7528\u6237\uff0c\u5efa\u8bae\u5148\u914d\u7f6e\u5e76\u9a8c\u8bc1\u5bc6\u94a5\u767b\u5f55\uff0c\u518d\u9010\u6b65\u5173\u95ed\u5bc6\u7801\u767b\u5f55\u3002\u5173\u95ed\u524d\u8bf7\u786e\u4fdd\u6709 VNC \u6216\u63a7\u5236\u53f0\u6062\u590d\u901a\u9053\uff0c\u907f\u514d\u56e0\u64cd\u4f5c\u5931\u8bef\u5bfc\u81f4\u65e0\u6cd5\u767b\u5f55\u3002<\/p>\n<h3>2. \u5b9d\u5854\u9762\u677f\u7aef\u53e3\u66b4\u9732\u5728\u516c\u7f51\u6709\u98ce\u9669\u5417\uff1f<\/h3>\n<p>\u6709\u98ce\u9669\u3002\u5efa\u8bae\u4ec5\u5bf9\u6388\u6743 IP \u653e\u884c\u9762\u677f\u7aef\u53e3\uff0c\u5e76\u5f00\u542f\u9762\u677f SSL\u3002\u82e5\u5fc5\u987b\u4ece\u591a\u5730\u70b9\u8bbf\u95ee\uff0c\u53ef\u4f7f\u7528 VPN 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