{"id":300,"date":"2026-08-12T21:05:13","date_gmt":"2026-08-12T13:05:13","guid":{"rendered":"https:\/\/www.idcy.com\/help\/news\/10300.html"},"modified":"2026-08-12T21:05:13","modified_gmt":"2026-08-12T13:05:13","slug":"%e6%96%b0%e5%8a%a0%e5%9d%a1%e7%8b%ac%e7%ab%8b%e6%9c%8d%e5%8a%a1%e5%99%a8linux%e5%ae%89%e5%85%a8%e9%85%8d%e7%bd%ae%e4%b8%8e%e5%8a%a0%e5%9b%ba%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.idcy.com\/help\/docs\/10300.html","title":{"rendered":"\u65b0\u52a0\u5761\u72ec\u7acb\u670d\u52a1\u5668Linux\u5b89\u5168\u914d\u7f6e\u4e0e\u52a0\u56fa\u64cd\u4f5c\u6307\u5357"},"content":{"rendered":"<p>\u501f\u52a9\u4ebf\u8fbe\u7f51\u7edc\u63d0\u4f9b\u7684<a href=\"https:\/\/www.idcy.com\/dedicated\/sg\/\" title=\"\u65b0\u52a0\u5761\u4f01\u4e1a\u7ea7\u670d\u52a1\u5668\" class=\"idcy-auto-link\">\u65b0\u52a0\u5761\u4f01\u4e1a\u7ea7\u670d\u52a1\u5668<\/a>\uff0c\u60a8\u80fd\u591f\u72ec\u4eab\u7269\u7406\u786c\u4ef6\u8d44\u6e90\uff0c\u8fd9\u4e3a\u670d\u52a1\u5668\u7684\u5b89\u5168\u914d\u7f6e\u4e0e\u6027\u80fd\u8c03\u4f18\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u53ef\u63a7\u6027\u3002\u672c\u6587\u4ee5\u901a\u7528Linux\u53d1\u884c\u7248\uff08\u5982CentOS 7\/8\u3001Ubuntu 20.04\/22.04 LTS\uff09\u4e3a\u4f8b\uff0c\u63d0\u4f9b\u4e00\u4efd\u57fa\u7840\u7684\u5b89\u5168\u914d\u7f6e\u6307\u5357\uff0c\u6240\u6709\u64cd\u4f5c\u5efa\u8bae\u5148\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u9a8c\u8bc1\uff0c\u5e76\u786e\u4fdd\u5df2\u5bf9\u5173\u952e\u6570\u636e\u4e0e\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u5907\u4efd\u3002<\/p>\n<h2>\u4e00\u3001\u64cd\u4f5c\u524d\u51c6\u5907\u4e0e\u5907\u4efd\u8981\u6c42<\/h2>\n<p>\u6267\u884c\u4efb\u4f55\u5b89\u5168\u53d8\u66f4\u524d\uff0c\u52a1\u5fc5\u5bf9\u4ee5\u4e0b\u5185\u5bb9\u8fdb\u884c\u5907\u4efd\uff1a<\/p>\n<ul>\n<li><code>\/etc<\/code> \u76ee\u5f55\u4e0b\u7684\u5173\u952e\u914d\u7f6e\u6587\u4ef6\uff08\u5982 <code>ssh\/sshd_config<\/code>\u3001<code>firewalld<\/code>\u3001<code>sysctl.conf<\/code>\uff09\uff1b<\/li>\n<li>\u7528\u6237\u6570\u636e\u4e0e\u4e1a\u52a1\u76ee\u5f55\uff1b<\/li>\n<li>\u5f53\u524d\u9632\u706b\u5899\u89c4\u5219\uff08\u4f7f\u7528 <code>iptables-save<\/code> \u6216 <code>firewall-cmd --dump<\/code> \u8f93\u51fa\uff09\u3002<\/li>\n<\/ul>\n<p>\u63a8\u8350\u4f7f\u7528 <code>tar<\/code> \u7ed3\u5408 <code>rsync<\/code> \u5c06\u5907\u4efd\u4f20\u8f93\u81f3\u5916\u90e8\u5b58\u50a8\uff0c\u6216\u901a\u8fc7\u670d\u52a1\u5668\u7ba1\u7406\u9762\u677f\u521b\u5efa\u78c1\u76d8\u5feb\u7167\u3002\u82e5\u6761\u4ef6\u5141\u8bb8\uff0c\u53ef\u9884\u5148\u5728\u4e00\u53f0\u914d\u7f6e\u76f8\u540c\u7684\u6d4b\u8bd5\u673a\u4e0a\u6f14\u7ec3\uff0c\u4ee5\u964d\u4f4e\u98ce\u9669\u3002<\/p>\n<h2>\u4e8c\u3001\u7cfb\u7edf\u4e0e\u8f6f\u4ef6\u5305\u66f4\u65b0<\/h2>\n<p>\u4fdd\u6301\u7cfb\u7edf\u5904\u4e8e\u6700\u65b0\u72b6\u6001\u662f\u9632\u5fa1\u5df2\u77e5\u6f0f\u6d1e\u7684\u57fa\u7840\u3002\u5bf9\u4e8e CentOS\/RHEL\uff0c\u6267\u884c <code>yum makecache &amp;&amp; yum update<\/code>\uff1b\u5bf9\u4e8e Ubuntu\/Debian\uff0c\u6267\u884c <code>apt update &amp;&amp; apt upgrade<\/code>\u3002\u5efa\u8bae\u542f\u7528\u81ea\u52a8\u5b89\u5168\u66f4\u65b0\uff0c\u4ee5Ubuntu\u4e3a\u4f8b\uff1a\u5b89\u88c5 <code>unattended-upgrades<\/code> \u5e76\u914d\u7f6e <code>\/etc\/apt\/apt.conf.d\/50unattended-upgrades<\/code>\uff0c\u4ec5\u5141\u8bb8\u81ea\u52a8\u5b89\u88c5\u6765\u81ea\u5b89\u5168\u6e90\u7684\u66f4\u65b0\u3002<\/p>\n<p><strong>\u9a8c\u8bc1\u65b9\u6cd5\uff1a<\/strong>\u8fd0\u884c <code>yum check-update<\/code> \u6216 <code>apt list --upgradable<\/code> \u68c0\u67e5\u662f\u5426\u4ecd\u6709\u53ef\u66f4\u65b0\u5305\uff0c\u5e76\u67e5\u770b\u7cfb\u7edf\u65e5\u5fd7\u786e\u8ba4\u65e0\u62a5\u9519\u3002<\/p>\n<p><strong>\u56de\u6eda\u601d\u8def\uff1a<\/strong>\u82e5\u66f4\u65b0\u540e\u51fa\u73b0\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u53ef\u5229\u7528\u78c1\u76d8\u5feb\u7167\u56de\u6eda\uff0c\u6216\u4f7f\u7528 <code>yum history undo<\/code>\uff08CentOS\uff09\u4ee5\u53ca <code>apt install &lt;package&gt;=&lt;version&gt;<\/code>\uff08Ubuntu\uff09\u5c06\u7279\u5b9a\u5305\u964d\u7ea7\u81f3\u5148\u524d\u7248\u672c\u3002\u66f4\u591a\u7cfb\u7edf\u5c42\u9762\u7684\u52a0\u56fa\u5efa\u8bae\uff0c\u8bf7\u53c2\u9605<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>\u3002<\/p>\n<h2>\u4e09\u3001SSH \u670d\u52a1\u5b89\u5168\u52a0\u56fa<\/h2>\n<h3>3.1 \u4fee\u6539\u9ed8\u8ba4\u7aef\u53e3\u4e0e\u9650\u5236\u76d1\u542c\u5730\u5740<\/h3>\n<p>\u7f16\u8f91 <code>\/etc\/ssh\/sshd_config<\/code>\uff0c\u4fee\u6539 <code>Port 22<\/code> \u4e3a\u975e\u6807\u51c6\u9ad8\u7aef\u53e3\u53f7\uff08\u4f8b\u5982 2222\uff09\uff0c\u5e76\u53ef\u8bbe\u7f6e <code>ListenAddress<\/code> \u4ec5\u7ed1\u5b9a\u5185\u7f51 IP\uff08\u82e5\u4ec5\u901a\u8fc7\u5185\u7f51\u7ba1\u7406\uff09\u3002\u91cd\u542f SSH \u670d\u52a1\uff1a<code>systemctl restart sshd<\/code>\u3002\u52a1\u5fc5\u5148\u5728\u9632\u706b\u5899\u653e\u884c\u65b0\u7aef\u53e3\uff0c\u5e76\u4fdd\u6301\u539f\u6709 SSH \u4f1a\u8bdd\u4e0d\u88ab\u65ad\u5f00\uff0c\u65b0\u5efa\u4f1a\u8bdd\u9a8c\u8bc1\u6210\u529f\u540e\u518d\u5173\u95ed\u65e7\u8fde\u63a5\u3002<\/p>\n<h3>3.2 \u7981\u7528\u5bc6\u7801\u767b\u5f55\uff0c\u542f\u7528\u5bc6\u94a5\u8ba4\u8bc1<\/h3>\n<p>\u751f\u6210\u9ad8\u5f3a\u5ea6\u5bc6\u94a5\u5bf9\uff1a<code>ssh-keygen -t ed25519 -C \"admin@server\"<\/code>\uff0c\u5c06\u516c\u94a5\u8ffd\u52a0\u81f3\u76ee\u6807\u7528\u6237\u7684 <code>~\/.ssh\/authorized_keys<\/code>\u3002\u5728 <code>sshd_config<\/code> \u4e2d\u8bbe\u7f6e\uff1a<\/p>\n<pre><code>PermitRootLogin prohibit-password\nPasswordAuthentication no\nPubkeyAuthentication yes\nChallengeResponseAuthentication no<\/code><\/pre>\n<p>\u91cd\u542f SSH \u540e\uff0c\u4ec5\u5141\u8bb8\u4f7f\u7528\u5bc6\u94a5\u767b\u5f55\u3002\u4f7f\u7528\u53e6\u4e00\u7ec8\u7aef\u6d4b\u8bd5\u5bc6\u94a5\u8ba4\u8bc1\u6210\u529f\u4e14\u5bc6\u7801\u767b\u5f55\u88ab\u62d2\u3002<\/p>\n<h3>3.3 \u90e8\u7f72 Fail2Ban \u9632\u66b4\u529b\u7834\u89e3<\/h3>\n<p>\u5b89\u88c5 fail2ban\uff1a<code>yum install fail2ban<\/code> \u6216 <code>apt install fail2ban<\/code>\u3002\u521b\u5efa <code>\/etc\/fail2ban\/jail.local<\/code>\uff0c\u6dfb\u52a0\u9488\u5bf9 sshd \u7684\u89c4\u5219\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>[sshd]\nenabled = true\nport = 2222\nmaxretry = 3\nbantime = 3600<\/code><\/pre>\n<p>\u542f\u52a8\u5e76\u8bbe\u7f6e\u5f00\u673a\u81ea\u542f\u3002\u901a\u8fc7 <code>fail2ban-client status sshd<\/code> \u9a8c\u8bc1\u662f\u5426\u751f\u6548\u3002\u82e5\u56e0\u8bef\u5224\u5c01\u9501\u81ea\u8eab IP\uff0c\u53ef\u901a\u8fc7\u670d\u52a1\u5668\u63a7\u5236\u53f0\u6267\u884c <code>fail2ban-client set sshd unbanip &lt;IP&gt;<\/code> \u89e3\u5c01\u3002<\/p>\n<h2>\u56db\u3001\u9632\u706b\u5899\u7b56\u7565\u914d\u7f6e<\/h2>\n<p>\u6839\u636e\u7cfb\u7edf\u9009\u7528 <code>firewalld<\/code>\uff08CentOS\uff09\u6216 <code>ufw<\/code>\uff08Ubuntu\uff09\u3002\u4ee5 firewalld \u4e3a\u4f8b\uff1a<\/p>\n<pre><code>systemctl start firewalld\nsystemctl enable firewalld\nfirewall-cmd --set-default-zone=public\nfirewall-cmd --permanent --add-port=2222\/tcp\nfirewall-cmd --permanent --add-service=http\nfirewall-cmd --permanent --add-service=https\nfirewall-cmd --reload<\/code><\/pre>\n<p><strong>\u5b89\u5168\u6d4b\u8bd5\u673a\u5236\uff1a<\/strong>\u5728\u5e94\u7528\u65b0\u89c4\u5219\u524d\uff0c\u53ef\u521b\u5efa\u4e00\u6761\u5ef6\u65f6\u6e05\u9664\u4efb\u52a1\uff0c\u4ee5\u9632\u89c4\u5219\u5bfc\u81f4\u81ea\u8eab\u88ab\u5c01\u9501\uff1a<\/p>\n<pre><code>echo \"systemctl stop firewalld\" | at now + 5 minutes<\/code><\/pre>\n<p>\u5f85\u9a8c\u8bc1\u89c4\u5219\u6b63\u786e\u4e14\u53ef\u767b\u5f55\u540e\uff0c\u53d6\u6d88\u8be5\u8ba1\u5212\u4efb\u52a1\u3002<\/p>\n<p><strong>\u9a8c\u8bc1\uff1a<\/strong>\u4f7f\u7528 <code>firewall-cmd --list-all<\/code> \u68c0\u67e5\u5f00\u653e\u7684\u7aef\u53e3\u4e0e\u670d\u52a1\u3002<\/p>\n<p><strong>\u56de\u6eda\uff1a<\/strong>\u5229\u7528\u524d\u4e00\u6b65\u5907\u4efd\u7684\u89c4\u5219\u6587\u4ef6\u6062\u590d\uff0c\u6216\u624b\u52a8\u5220\u9664\u8bef\u589e\u7aef\u53e3\u540e\u91cd\u8f7d\u3002<\/p>\n<h2>\u4e94\u3001\u5165\u4fb5\u68c0\u6d4b\u4e0e\u65e5\u5fd7\u76d1\u63a7<\/h2>\n<p>\u5b89\u88c5 AIDE \u5bf9\u5173\u952e\u7cfb\u7edf\u6587\u4ef6\u8fdb\u884c\u5b8c\u6574\u6027\u6821\u9a8c\uff1a<code>yum install aide<\/code> \u6216 <code>apt install aide<\/code>\u3002\u521d\u59cb\u5316\u57fa\u51c6\u6570\u636e\u5e93\uff1a<code>aide --init<\/code>\uff0c\u5e76\u5c06\u751f\u6210\u7684\u6570\u636e\u5e93\u79fb\u81f3 <code>\/var\/lib\/aide\/aide.db.gz<\/code>\uff08\u66f4\u540d\u4e3a <code>aide.db.gz<\/code>\uff09\u3002\u5b9a\u671f\u8fd0\u884c <code>aide --check<\/code> \u5bf9\u6bd4\u6587\u4ef6\u53d8\u52a8\u3002<\/p>\n<p>\u540c\u65f6\u5efa\u8bae\u5c06\u7cfb\u7edf\u65e5\u5fd7\u8f6c\u53d1\u81f3\u8fdc\u7a0b\u65e5\u5fd7\u670d\u52a1\u5668\uff0c\u9632\u6b62\u672c\u5730\u65e5\u5fd7\u88ab\u6e05\u9664\u3002\u53ef\u7ed3\u5408 <code>rsyslog<\/code> \u6216 <code>journald<\/code> \u5b9e\u73b0\uff0c\u5e76\u914d\u7f6e <code>logwatch<\/code> \u6216\u81ea\u5b9a\u4e49\u811a\u672c\u53d1\u9001\u544a\u8b66\u3002<\/p>\n<p>\u7531\u4e8e\u4ebf\u8fbe\u7f51\u7edc\u7684\u72ec\u7acb\u670d\u52a1\u5668\u91c7\u7528\u72ec\u7acb\u786c\u4ef6\u67b6\u6784\uff0c\u60a8\u65e0\u9700\u62c5\u5fc3\u7531\u865a\u62df\u5316\u73af\u5883\u4e2d\u5176\u5b83\u79df\u6237\u5bfc\u81f4\u7684\u8d44\u6e90\u4e89\u62a2\uff0c\u5b89\u5168\u5de5\u5177\uff08\u5982 AIDE \u5b9a\u671f\u626b\u63cf\uff09\u80fd\u591f\u83b7\u5f97\u6301\u7eed\u7a33\u5b9a\u7684 CPU \u4e0e\u78c1\u76d8 I\/O\uff0c\u4fdd\u969c\u5b89\u5168\u7b56\u7565\u7684\u53ef\u9760\u6267\u884c\u3002\u82e5\u9700\u8fdb\u4e00\u6b65\u4f18\u5316Web\u670d\u52a1\u6027\u80fd\uff0c\u53ef\u53c2\u9605<a href=\"https:\/\/www.idcy.com\/help\/?help_category=tech-docs\" title=\"Nginx\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316\u6307\u5357\" class=\"idcy-auto-link\">Nginx\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316\u6307\u5357<\/a>\u3002<\/p>\n<h2>\u603b\u7ed3\u4e0e\u5efa\u8bae<\/h2>\n<p>\u901a\u8fc7\u4e0a\u8ff0 SSH \u52a0\u56fa\u3001\u9632\u706b\u5899\u9650\u5236\u3001\u5165\u4fb5\u68c0\u6d4b\u4e0e\u6301\u7eed\u66f4\u65b0\uff0c\u7ba1\u7406\u5458\u53ef\u8fc5\u901f\u63d0\u5347\u65b0\u52a0\u5761\u72ec\u7acb\u670d\u52a1\u5668\u7684\u5b89\u5168\u57fa\u7ebf\u3002\u4ebf\u8fbe\u7f51\u7edc\uff08IDCY GLOBAL\uff09\u63d0\u4f9b\u7684\u72ec\u4eab\u670d\u52a1\u5668\u73af\u5883\u8ba9\u60a8\u80fd\u591f\u81ea\u7531\u5b9a\u5236\u5b89\u5168\u4e0a\u4e0b\u6587\uff0c\u4ece\u5bb9\u5e94\u5bf9\u4e1a\u52a1\u589e\u957f\u3002\u5bf9\u4e8e\u66f4\u6df1\u5165\u7684\u5b89\u5168\u5b9e\u8df5\uff0c\u5efa\u8bae\u53c2\u9605\u76f8\u5173\u6307\u5bfc\u6587\u6863\uff1b\u82e5\u670d\u52a1\u5668\u8fd0\u884c Web \u5e94\u7528\uff0c\u53ef\u8fdb\u4e00\u6b65\u7ed3\u5408\u6027\u80fd\u4f18\u5316\u65b9\u6848\u5b9e\u73b0\u6027\u80fd\u4e0e\u5b89\u5168\u5e76\u91cd\u3002\u66f4\u591a\u4ea7\u54c1\u4e0e\u6280\u672f\u652f\u6301\uff0c\u6b22\u8fce\u8bbf\u95ee<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>\u3002<\/p>\n<h2>\u5e38\u89c1\u95ee\u9898\uff08FAQ\uff09<\/h2>\n<h3>\u95ee\uff1a\u6267\u884c\u5b89\u5168\u914d\u7f6e\u540e\u82e5\u65e0\u6cd5\u8fdc\u7a0b\u767b\u5f55\uff0c\u5e94\u5982\u4f55\u6062\u590d\uff1f<\/h3>\n<p>\u53ef\u4ee5\u901a\u8fc7\u670d\u52a1\u5668\u63d0\u4f9b\u7684\u5e26\u5916\u7ba1\u7406\uff08\u5982 IPMI\u3001iDRAC \u6216 VNC \u63a7\u5236\u53f0\uff09\u767b\u5f55\uff0c\u68c0\u67e5\u9632\u706b\u5899\u89c4\u5219\u4e0e SSH \u914d\u7f6e\uff0c\u6216\u5229\u7528\u4e4b\u524d\u5907\u4efd\u7684\u914d\u7f6e\u6587\u4ef6\u6062\u590d\u3002\u5f3a\u70c8\u5efa\u8bae\u5728\u53d8\u66f4\u65f6\u4fdd\u7559\u4e00\u4e2a\u5df2\u8ba4\u8bc1\u7684 SSH \u4f1a\u8bdd\uff0c\u76f4\u5230\u786e\u8ba4\u65b0\u89c4\u5219\u6709\u6548\u540e\u518d\u5173\u95ed\u3002<\/p>\n<h3>\u95ee\uff1a\u672c\u6307\u5357\u662f\u5426\u517c\u5bb9\u6240\u6709 Linux 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