{"id":26357,"date":"2026-01-20T17:33:00","date_gmt":"2026-01-20T09:33:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=26357"},"modified":"2026-01-04T14:45:25","modified_gmt":"2026-01-04T06:45:25","slug":"vps-ssh-security-and-firewall-hardening-guide","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/vps\/vps-ssh-security-and-firewall-hardening-guide\/","title":{"rendered":"VPS\u642d\u5efa\u8fdb\u9636\uff1a\u5982\u4f55\u5b89\u5168\u914d\u7f6e\u4f60\u7684SSH\u4e0e\u9632\u706b\u5899"},"content":{"rendered":"\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u5b8c\u6210\u4e86<a href=\"https:\/\/cn.hostease.com\/vps.html\">VPS\u642d\u5efa<\/a>\uff0c\u7f51\u7ad9\u4e5f\u80fd\u6b63\u5e38\u8bbf\u95ee\uff0c\u90a3\u4f60\u5927\u6982\u7387\u4f1a\u8fdb\u5165\u4e00\u4e2a\u9636\u6bb5\uff1a<strong>\u670d\u52a1\u5668\u5148\u653e\u7740\uff0c\u7b49\u6709\u7a7a\u518d\u8bf4<\/strong>\u3002\u4f46\u6211\u60f3\u63d0\u9192\u4f60\u4e00\u53e5\uff0c\u6211\u4eec\u5728\u5e2e\u7528\u6237\u505a\u5b89\u5168\u6392\u67e5\u65f6\u53d1\u73b0\uff0c\u771f\u6b63\u51fa\u95ee\u9898\u7684\uff0c\u5f80\u5f80\u5c31\u662f\u8fd9\u4e9b\u201c\u5148\u653e\u7740\u201d\u7684\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<p>\u5f88\u591a\u65b0\u624b\u4f1a\u628a\u7cbe\u529b\u653e\u5728\u7a0b\u5e8f\u548c\u63d2\u4ef6\u4e0a\uff0c\u5374\u5ffd\u7565\u4e86\u6700\u5e95\u5c42\u7684\u5165\u53e3\u3002\u5bf9\u670d\u52a1\u5668\u6765\u8bf4\uff0c<strong>SSH\u5c31\u662f\u4f60\u5bb6\u7684\u6b63\u95e8\uff0c\u9632\u706b\u5899\u5c31\u662f\u56f4\u5899<\/strong>\u3002\u95e8\u6ca1\u6362\u9501\u3001\u5899\u6ca1\u56f4\u597d\uff0c\u91cc\u9762\u653e\u4ec0\u4e48\u90fd\u4e0d\u5b89\u5168\u3002<\/p>\n\n\n\n<p>\u6700\u5e38\u89c1\u7684\u98ce\u9669\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSH\u9ed8\u8ba422\u7aef\u53e3\u957f\u671f\u66b4\u9732\uff0c\u88ab\u81ea\u52a8\u5316\u5de5\u5177\u5168\u5929\u626b\u63cf<\/li>\n\n\n\n<li>root\u8d26\u53f7\u5141\u8bb8\u76f4\u63a5\u767b\u5f55\uff0c\u4e00\u65e6\u5bc6\u7801\u6cc4\u9732\u5c31\u662f\u6700\u9ad8\u6743\u9650<\/li>\n\n\n\n<li>\u4ecd\u7136\u4f7f\u7528\u5bc6\u7801\u767b\u5f55\uff0c\u6301\u7eed\u906d\u9047\u7206\u7834<\/li>\n\n\n\n<li>\u9632\u706b\u5899\u672a\u542f\u7528\uff0c\u6240\u6709\u7aef\u53e3\u9ed8\u8ba4\u5bf9\u516c\u7f51\u5f00\u653e<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e9b\u95ee\u9898\u5355\u770b\u4e0d\u5413\u4eba\uff0c\u4f46\u53e0\u52a0\u5728\u4e00\u8d77\uff0c\u5c31\u5f88\u5bb9\u6613\u51fa\u4e8b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728\u52a8SSH\u548c\u9632\u706b\u5899\u524d\uff0c\u6211\u901a\u5e38\u4f1a\u5148\u505a\u8fd9\u51e0\u4ef6\u4e8b<\/h2>\n\n\n\n<p>\u5728\u6b63\u5f0f\u5f00\u59cb\u524d\uff0c\u6211\u5f3a\u70c8\u5efa\u8bae\u4f60\u5148\u505a\u4e00\u4e2a\u5c0f\u51c6\u5907\u3002\u8fd9\u4e00\u6b65\u770b\u8d77\u6765\u591a\u4f59\uff0c\u4f46\u5b83\u80fd\u5728\u5173\u952e\u65f6\u523b\u6551\u4f60\u4e00\u547d\u3002<\/p>\n\n\n\n<p>\u6211\u81ea\u5df1\u5728\u64cd\u4f5c\u65f6\uff0c\u901a\u5e38\u4f1a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u540c\u65f6\u6253\u5f00\u4e24\u4e2aSSH\u4f1a\u8bdd\u7a97\u53e3<\/strong>\uff0c\u4e00\u4e2a\u8d1f\u8d23\u4fee\u6539\uff0c\u4e00\u4e2a\u4e13\u95e8\u7528\u6765\u6d4b\u8bd5\u662f\u5426\u8fd8\u80fd\u8fde<\/li>\n\n\n\n<li><strong>\u786e\u8ba4\u6709\u4e00\u4e2a\u53ef\u7528\u7684\u666e\u901a\u7528\u6237\u5e76\u5177\u5907sudo\u6743\u9650<\/strong>\uff0c\u540e\u9762\u6211\u4eec\u4f1a\u7981\u7528root\u767b\u5f55<\/li>\n\n\n\n<li><strong>\u517b\u6210\u6bcf\u6b21\u4fee\u6539SSH\u914d\u7f6e\u540e\u5148\u6821\u9a8c\u7684\u4e60\u60ef<\/strong>\uff0c\u907f\u514d\u8bed\u6cd5\u9519\u8bef\u76f4\u63a5\u91cd\u8f7d\u670d\u52a1<\/li>\n<\/ul>\n\n\n\n<p>\u4ece\u8fd9\u4e00\u8282\u5f00\u59cb\uff0c\u4f60\u505a\u7684\u6bcf\u4e00\u6b65\uff0c\u90fd\u6709\u53ef\u80fd\u8ba9\u4f60\u6682\u65f6\u8fde\u4e0d\u4e0a\u670d\u52a1\u5668\u3002\u53ea\u8981\u4f60\u4fdd\u6301\u201c\u6539\u4e00\u5c0f\u6b65\uff0c\u7acb\u523b\u9a8c\u8bc1\u201d\uff0c\u98ce\u9669\u4f1a\u4f4e\u5f88\u591a\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5f3a\u5316SSH\u5b89\u5168<\/h2>\n\n\n\n<p>\u8fd9\u90e8\u5206\u6211\u4f1a\u6309\u201c\u98ce\u9669\u4ece\u9ad8\u5230\u4f4e\u201d\u7684\u987a\u5e8f\u6765\u5199\uff0c\u4f60\u53ef\u4ee5\u7167\u7740\u4e00\u6b65\u4e00\u6b65\u6765\uff0c\u4e0d\u5efa\u8bae\u8df3\u8fc7\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fee\u6539\u9ed8\u8ba4SSH\u7aef\u53e3<\/h3>\n\n\n\n<p>\u4fee\u6539\u7aef\u53e3\u5e76\u4e0d\u662f\u4e3a\u4e86\u201c\u9632\u9ed1\u5ba2\u201d\uff0c\u800c\u662f\u4e3a\u4e86<strong>\u51cf\u5c11\u65e0\u610f\u4e49\u7684\u626b\u63cf\u548c\u7206\u7834\u5c1d\u8bd5<\/strong>\u300222\u7aef\u53e3\u51e0\u4e4e\u662f\u88ab\u5199\u6b7b\u5728\u626b\u63cf\u5668\u91cc\u7684\uff0c\u6362\u4e00\u4e2a\u4e0d\u5e38\u89c1\u7684\u7aef\u53e3\uff0c\u65e5\u5fd7\u7acb\u523b\u4f1a\u5e72\u51c0\u5f88\u591a\u3002<\/p>\n\n\n\n<p>\u6211\u7684\u505a\u6cd5\u901a\u5e38\u662f\uff1a<strong>\u5148\u8ba9SSH\u540c\u65f6\u76d1\u542c\u65e7\u7aef\u53e3\u548c\u65b0\u7aef\u53e3\uff0c\u786e\u8ba4\u65b0\u7aef\u53e3\u6ca1\u95ee\u9898\u540e\uff0c\u518d\u5173\u95ed22<\/strong>\u3002<\/p>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u7f16\u8f91SSH\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo nano \/etc\/ssh\/sshd_config\n<\/pre>\n\n\n\n<p>\u52a0\u5165\u6216\u4fee\u6539\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Port 22\nPort 2222\n<\/pre>\n\n\n\n<p>\u7136\u540e\u5148\u6821\u9a8c\uff0c\u518d\u91cd\u8f7d\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo sshd -t\nsudo systemctl reload sshd\n<\/pre>\n\n\n\n<p>\u8fd9\u4e00\u6b65\u5b8c\u6210\u540e\uff0c\u7acb\u523b\u7528\u53e6\u4e00\u4e2a\u7a97\u53e3\u6d4b\u8bd5\u65b0\u7aef\u53e3\u80fd\u5426\u767b\u5f55\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ssh -p 2222 youruser@your_server_ip\n<\/pre>\n\n\n\n<p><strong>\u63d0\u9192\u4e00\u4e0b<\/strong>\uff1a\u4e0d\u8981\u4e00\u4e0a\u6765\u5c31\u5220\u638922\u7aef\u53e3\u3002\u53ea\u8981\u65b0\u7aef\u53e3\u8fd8\u6ca1\u9a8c\u8bc1\u6210\u529f\uff0c\u4f60\u5c31\u522b\u6025\u7740\u5173\u65e7\u95e8\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7981\u6b62root\u7528\u6237\u76f4\u63a5\u767b\u5f55<\/h3>\n\n\n\n<p>\u8fd9\u662f\u6211\u8ba4\u4e3a\u6027\u4ef7\u6bd4\u6781\u9ad8\u7684\u4e00\u6b65\u3002root\u8fd9\u4e2a\u8d26\u53f7\u540d\u5bf9\u653b\u51fb\u8005\u6765\u8bf4\u592a\u201c\u786e\u5b9a\u201d\u4e86\uff0c\u4e00\u65e6\u5141\u8bb8\u8fdc\u7a0b\u767b\u5f55\uff0c\u5bf9\u65b9\u53ea\u9700\u8981\u731c\u5bc6\u7801\u3002<\/p>\n\n\n\n<p>\u66f4\u5b89\u5168\u3001\u4e5f\u66f4\u5e38\u89c1\u7684\u505a\u6cd5\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7981\u6b62root\u76f4\u63a5SSH\u767b\u5f55<\/li>\n\n\n\n<li>\u4f7f\u7528\u666e\u901a\u7528\u6237\u767b\u5f55\u540e\uff0c\u901a\u8fc7sudo\u63d0\u6743<\/li>\n<\/ul>\n\n\n\n<p>\u914d\u7f6e\u65b9\u5f0f\u5f88\u7b80\u5355\uff0c\u5728\u540c\u4e00\u4e2a\u6587\u4ef6\u91cc\u627e\u5230\u6216\u65b0\u589e\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">PermitRootLogin no\n<\/pre>\n\n\n\n<p>\u6821\u9a8c\u5e76\u91cd\u8f7d\u540e\uff0c\u7acb\u523b\u786e\u8ba4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u666e\u901a\u7528\u6237\u8fd8\u80fd\u767b\u5f55<\/li>\n\n\n\n<li>sudo\u6743\u9650\u6b63\u5e38\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u4f60\u73b0\u5728\u8fd8\u53ea\u6709root\u8d26\u53f7\uff0c\u90a3\u5c31\u5148\u522b\u6025\u7740\u505a\u8fd9\u4e00\u6b65\uff0c\u5148\u521b\u5efa\u597d\u66ff\u4ee3\u5165\u53e3\u518d\u8bf4\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528SSH\u5bc6\u94a5\u5bf9\u767b\u5f55\uff0c\u5e76\u5173\u95ed\u5bc6\u7801\u8ba4\u8bc1<\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u95ee\u6211\uff0c<strong>SSH\u5b89\u5168\u91cc\u54ea\u4e00\u6b65\u6700\u503c\u5f97\u505a<\/strong>\uff0c\u6211\u4f1a\u6beb\u4e0d\u72b9\u8c6b\u9009\u8fd9\u4e2a\u3002<\/p>\n\n\n\n<p>\u5bc6\u7801\u518d\u590d\u6742\uff0c\u672c\u8d28\u4e0a\u8fd8\u662f\u53ef\u4ee5\u88ab\u4e0d\u65ad\u5c1d\u8bd5\u7684\u3002\u800cSSH\u5bc6\u94a5\u767b\u5f55\u662f\u57fa\u4e8e\u975e\u5bf9\u79f0\u52a0\u5bc6\u7684\uff0c\u53ea\u8981\u79c1\u94a5\u4e0d\u6cc4\u9732\uff0c\u670d\u52a1\u5668\u672c\u8eab\u662f\u6ca1\u6709\u201c\u53ef\u731c\u201d\u7684\u4e1c\u897f\u7684\u3002<\/p>\n\n\n\n<p>\u5728\u4f60\u7684\u672c\u5730\u7535\u8111\u751f\u6210\u5bc6\u94a5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ssh-keygen -t ed25519 -a 64\n<\/pre>\n\n\n\n<p>\u751f\u6210\u540e\uff0c\u628a\u516c\u94a5\u590d\u5236\u5230\u670d\u52a1\u5668\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ssh-copy-id -p 2222 youruser@your_server_ip\n<\/pre>\n\n\n\n<p>\u63a5\u4e0b\u6765\u975e\u5e38\u91cd\u8981\u7684\u4e00\u6b65\u662f\uff1a<br><strong>\u5148\u6d4b\u8bd5\u5bc6\u94a5\u767b\u5f55\u662f\u5426\u6210\u529f<\/strong>\u3002<br>\u53ea\u6709\u5f53\u4f60\u786e\u8ba4\u53ef\u4ee5\u7528\u5bc6\u94a5\u6b63\u5e38\u767b\u5f55\u540e\uff0c\u624d\u53bb\u5173\u95ed\u5bc6\u7801\u767b\u5f55\u3002<\/p>\n\n\n\n<p>\u5728SSH\u914d\u7f6e\u4e2d\u8bbe\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">PasswordAuthentication no\nPubkeyAuthentication yes\n<\/pre>\n\n\n\n<p>\u518d\u6b21\u6821\u9a8c\u5e76\u91cd\u8f7d\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4e00\u5b9a\u8981\u5f3a\u8c03\u4e00\u53e5\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5343\u4e07\u4e0d\u8981\u5728\u6ca1\u9a8c\u8bc1\u5bc6\u94a5\u53ef\u7528\u4e4b\u524d\uff0c\u5c31\u5173\u6389\u5bc6\u7801\u767b\u5f55<br>\u8fd9\u662f\u65b0\u624b\u6700\u5bb9\u6613\u628a\u81ea\u5df1\u9501\u5728\u95e8\u5916\u7684\u5730\u65b9\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u914d\u7f6e\u9632\u706b\u5899\uff1a\u53ea\u653e\u884c\u771f\u6b63\u9700\u8981\u7684\u7aef\u53e3<\/h2>\n\n\n\n<p>SSH\u52a0\u56fa\u5b8c\u6210\u540e\uff0c\u4f60\u5df2\u7ecf\u628a\u201c\u94a5\u5319\u201d\u6362\u6210\u4e86\u66f4\u5b89\u5168\u7684\u7248\u672c\u3002\u63a5\u4e0b\u6765\u8fd9\u4e00\u6b65\uff0c\u662f\u628a\u201c\u9662\u95e8\u201d\u5173\u597d\u3002<\/p>\n\n\n\n<p>\u6838\u5fc3\u539f\u5219\u53ea\u6709\u4e00\u53e5\u8bdd\uff1a<br><strong>\u4f60\u7528\u4e0d\u5230\u7684\u7aef\u53e3\uff0c\u5c31\u4e0d\u8be5\u5bf9\u516c\u7f51\u5f00\u653e<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528UFW\u5b9e\u73b0\u6700\u5c0f\u653e\u884c<\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u7528\u7684\u662fUbuntu\u6216Debian\u7cfb\u7cfb\u7edf\uff0cUFW\u662f\u975e\u5e38\u5408\u9002\u7684\u9009\u62e9\uff0c\u7b80\u5355\u3001\u4e0d\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n\n\n\n<p>\u57fa\u672c\u6d41\u7a0b\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5148\u653e\u884c\u4f60\u6b63\u5728\u7528\u7684SSH\u7aef\u53e3<\/li>\n\n\n\n<li>\u518d\u653e\u884c80\u548c443<\/li>\n\n\n\n<li>\u6700\u540e\u8bbe\u7f6e\u9ed8\u8ba4\u62d2\u7edd\u6240\u6709\u5165\u7ad9\u8fde\u63a5<\/li>\n<\/ol>\n\n\n\n<p>\u793a\u4f8b\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo ufw allow 2222\/tcp\nsudo ufw allow 80\/tcp\nsudo ufw allow 443\/tcp\nsudo ufw default deny incoming\nsudo ufw default allow outgoing\nsudo ufw enable\n<\/pre>\n\n\n\n<p>\u542f\u7528\u540e\uff0c\u7acb\u523b\u6d4b\u8bd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSH\u662f\u5426\u8fd8\u80fd\u8fde<\/li>\n\n\n\n<li>\u7f51\u7ad9\u662f\u5426\u8fd8\u80fd\u8bbf\u95ee<\/li>\n<\/ul>\n\n\n\n<p>\u5f88\u591a\u4eba\u51fa\u95ee\u9898\uff0c\u90fd\u662f\u56e0\u4e3a\u987a\u5e8f\u53cd\u4e86\u3002\u8bb0\u4f4f\u4e00\u53e5\u8bdd\uff1a<strong>\u5148\u653e\u884c\uff0c\u518d\u542f\u7528<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528iptables\u7684\u8fdb\u9636\u601d\u8def<\/h3>\n\n\n\n<p>iptables\u66f4\u7075\u6d3b\uff0c\u4f46\u4e5f\u66f4\u5bb9\u6613\u201c\u624b\u6ed1\u201d\u3002\u5982\u679c\u4f60\u5bf9\u89c4\u5219\u8fd8\u4e0d\u719f\uff0c\u6211\u4e00\u822c\u4e0d\u5efa\u8bae\u4f60\u4e00\u4e0a\u6765\u5c31\u7528\u5b83\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u786e\u5b9e\u9700\u8981\uff0c\u7528\u4e00\u4e2a\u201c\u9010\u6b65\u6536\u7d27\u201d\u7684\u601d\u8def\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5148\u5141\u8bb8\u5df2\u5efa\u7acb\u8fde\u63a5<\/li>\n\n\n\n<li>\u518d\u653e\u884cSSH\u65b0\u7aef\u53e3\u548cWeb\u7aef\u53e3<\/li>\n\n\n\n<li>\u6700\u540e\u624d\u8bbe\u7f6e\u9ed8\u8ba4DROP<\/li>\n<\/ul>\n\n\n\n<p>\u5e76\u4e14\uff0c\u5f3a\u70c8\u5efa\u8bae\u4f60\u5728\u5e94\u7528\u89c4\u5219\u65f6\uff0c\u59cb\u7ec8\u4fdd\u6301\u7b2c\u4e8c\u4e2a\u4f1a\u8bdd\u7a97\u53e3\u5728\u7ebf\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u679c\u4f60\u771f\u7684\u628a\u81ea\u5df1\u9501\u5728\u5916\u9762\u4e86<\/h2>\n\n\n\n<p>\u8bf4\u53e5\u5b9e\u5728\u8bdd\uff0c\u51e0\u4e4e\u6bcf\u4e2a\u505a\u8fc7\u670d\u52a1\u5668\u7684\u4eba\uff0c\u90fd\u7ecf\u5386\u8fc7\u81f3\u5c11\u4e00\u6b21\u201c\u8fde\u4e0d\u4e0a\u201d\u7684\u77ac\u95f4\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u6211\u4e00\u76f4\u5efa\u8bae\uff1a<br><strong>\u9009\u62e9\u63d0\u4f9b\u540e\u53f0\u63a7\u5236\u9762\u677f\u548c\u5feb\u7167\u5907\u4efd\u7684VPS\u670d\u52a1\u5546<\/strong>\u3002<br>\u4e00\u65e6\u4f60\u5728\u6539SSH\u6216\u9632\u706b\u5899\u65f6\u8bef\u64cd\u4f5c\uff0c\u6709\u63a7\u5236\u53f0\u6216\u5feb\u7167\uff0c\u5f80\u5f80\u51e0\u5206\u949f\u5c31\u80fd\u6062\u590d\uff0c\u800c\u4e0d\u662f\u6574\u53f0\u91cd\u88c5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5feb\u901f\u81ea\u68c0\u6e05\u5355<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u7528\u4e0b\u9762\u8fd9\u4efd\u6e05\u5355\uff0c\u5feb\u901f\u786e\u8ba4\u81ea\u5df1\u7684<a href=\"https:\/\/cn.hostease.com\/vps.html\">VPS<\/a>\u662f\u5426\u5df2\u7ecf\u8fbe\u6807\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSH\u5df2\u4e0d\u4f7f\u752822\u7aef\u53e3<\/li>\n\n\n\n<li>root\u8d26\u53f7\u65e0\u6cd5\u76f4\u63a5\u8fdc\u7a0b\u767b\u5f55<\/li>\n\n\n\n<li>SSH\u5df2\u542f\u7528\u5bc6\u94a5\u767b\u5f55\uff0c\u5bc6\u7801\u767b\u5f55\u5173\u95ed<\/li>\n\n\n\n<li>\u9632\u706b\u5899\u4ec5\u653e\u884c80\u3001443\u548cSSH\u7aef\u53e3<\/li>\n\n\n\n<li>\u4f60\u6e05\u695a\u8bef\u64cd\u4f5c\u540e\u7684\u6062\u590d\u65b9\u5f0f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<p><strong>Q\uff1a\u6539\u4e86SSH\u7aef\u53e3\u662f\u4e0d\u662f\u5c31\u5b89\u5168\u4e86\uff1f<\/strong><br>\u4e0d\u662f\u3002\u7aef\u53e3\u53ea\u662f\u8f85\u52a9\u63aa\u65bd\uff0c\u771f\u6b63\u7684\u6838\u5fc3\u662f\u5bc6\u94a5\u3001\u9632\u706b\u5899\u548c\u6743\u9650\u63a7\u5236\u3002<\/p>\n\n\n\n<p><strong>Q\uff1a\u4e3a\u4ec0\u4e48\u5bc6\u94a5\u6bd4\u5bc6\u7801\u5b89\u5168\uff1f<\/strong><br>\u56e0\u4e3a\u670d\u52a1\u5668\u4e0d\u4fdd\u5b58\u79c1\u94a5\uff0c\u4e5f\u4e0d\u5b58\u5728\u201c\u53ef\u88ab\u5c1d\u8bd5\u201d\u7684\u9a8c\u8bc1\u4fe1\u606f\u3002<\/p>\n\n\n\n<p><strong>Q\uff1a\u65b0\u624b\u66f4\u9002\u5408UFW\u8fd8\u662fiptables\uff1f<\/strong><br>\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0cUFW\u5df2\u7ecf\u8db3\u591f\uff0c\u800c\u4e14\u51fa\u9519\u6982\u7387\u66f4\u4f4e\u3002<\/p>\n\n\n\n<p><strong>Q\uff1a\u53ea\u8dd1\u4e00\u4e2a\u7f51\u7ad9\uff0c\u9700\u8981\u5f00\u653e\u54ea\u4e9b\u7aef\u53e3\uff1f<\/strong><br>\u901a\u5e38\u5c31\u662f80\u3001443\uff0c\u52a0\u4e0a\u4f60\u81ea\u5df1\u7684SSH\u7aef\u53e3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5199\u5728\u6700\u540e<\/h2>\n\n\n\n<p><a href=\"https:\/\/cn.hostease.com\/vps.html\">VPS\u5b89\u5168<\/a>\u5e76\u4e0d\u662f\u4e00\u6b21\u6027\u4efb\u52a1\uff0c\u800c\u662f\u4e00\u5957\u53ef\u4ee5\u590d\u7528\u7684\u4e60\u60ef\u6d41\u7a0b\u3002<br>\u6bcf\u6b21\u5927\u6539\u524d\u5148\u505a\u5feb\u7167\uff0c\u6bcf\u4e00\u6b65\u6539\u52a8\u7acb\u523b\u9a8c\u8bc1\uff0c\u8fd9\u4f1a\u8ba9\u4f60\u8d70\u5f97\u66f4\u8fdc\u3001\u4e5f\u66f4\u7a33\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u5728\u914d\u7f6e\u8fc7\u7a0b\u4e2d\u9047\u5230\u95ee\u9898\uff0c\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u4ea4\u6d41\uff0c\u6216\u8005\u628a\u4f60\u7684\u601d\u8def\u548c\u5361\u70b9\u5206\u4eab\u51fa\u6765\u3002<br>\u5f88\u591a\u65f6\u5019\uff0c\u4f60\u7684\u95ee\u9898\uff0c\u6b63\u597d\u4e5f\u662f\u4e0b\u4e00\u4f4d\u65b0\u624b\u6700\u9700\u8981\u770b\u5230\u7684\u7b54\u6848\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u6709\u5e2e\u52a9\uff0c\u4e5f\u6b22\u8fce\u70b9\u8d5e\u3001\u6536\u85cf\u6216\u8f6c\u53d1\uff0c\u8ba9\u66f4\u591a\u6b63\u5728\u6298\u817eVPS\u7684\u4eba\u5c11\u8e29\u51e0\u4e2a\u5751\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f88\u591aVPS\u5728\u201c\u80fd\u7528\u201d\u4e4b\u540e\u5c31\u88ab\u5ffd\u7565\u4e86\u5b89\u5168\u914d\u7f6e\u3002\u6211\u7ed3\u5408\u4e3a\u7528\u6237\u505a\u52a0\u56fa\u7684\u5b9e\u64cd\u7ecf\u9a8c\uff0c\u4eceSSH\u7aef\u53e3\u4fee\u6539\u3001\u7981\u7528root\u767b\u5f55\u3001\u5bc6\u94a5\u767b\u5f55\uff0c\u5230\u9632\u706b\u5899\u6700\u5c0f\u653e\u884c\u539f\u5219\uff0c\u5b8c\u6574\u68b3\u7406\u4e00\u5957\u4e0d\u5bb9\u6613\u628a\u81ea\u5df1\u9501\u5728\u95e8\u5916\u7684VPS\u5b89\u5168\u914d\u7f6e\u601d\u8def\u3002<\/p>\n","protected":false},"author":2,"featured_media":26358,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[3905,3902,3904,3195,3693,3903],"class_list":["post-26357","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps","tag-iptables","tag-ssh","tag-ufw","tag-vps","tag-3693","tag-3903"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/01\/vps-ssh-security-and-firewall-hardening-guide.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/26357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=26357"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/26357\/revisions"}],"predecessor-version":[{"id":26359,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/26357\/revisions\/26359"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/26358"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=26357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=26357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=26357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}