{"id":90,"date":"2025-10-03T07:05:18","date_gmt":"2025-10-03T07:05:18","guid":{"rendered":"https:\/\/blog.tudcloud.com\/?p=90"},"modified":"2025-10-03T07:07:58","modified_gmt":"2025-10-03T07:07:58","slug":"linux-vps-security-best-practices-disable-root-login-password-authentication","status":"publish","type":"post","link":"https:\/\/blog.tudcloud.com\/zh\/linux-vps-security-best-practices-disable-root-login-password-authentication\/","title":{"rendered":"Linux VPS \u5b89\u5168\u6700\u4f73\u5b9e\u8df5\uff1a\u7981\u7528 Root \u767b\u5f55\u548c\u5bc6\u7801\u9a8c\u8bc1"},"content":{"rendered":"<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u8fd0\u884c Linux VPS \u65f6\uff0c <strong>\u5b89\u5168<\/strong> \u5e94\u8be5\u662f\u60a8\u7684\u9996\u8981\u4efb\u52a1\u3002\u672a\u53d7\u4fdd\u62a4\u7684\u670d\u52a1\u5668\u5f88\u5bb9\u6613\u6210\u4e3a\u66b4\u529b SSH \u653b\u51fb\u3001\u6076\u610f\u8f6f\u4ef6\u6ce8\u5165\u6216 DDoS \u6d2a\u6c34\u653b\u51fb\u7684\u76ee\u6807\u3002<\/p>\n\n\n\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd <strong>Linux VPS \u7684\u6700\u4f73\u5b89\u5168\u5b9e\u8df5<\/strong> \u6bcf\u4e2a\u670d\u52a1\u5668\u6240\u6709\u8005\u90fd\u5e94\u8be5\u9075\u5faa\u3002\u6211\u4eec\u8fd8\u5c06\u5c55\u793a\u5982\u4f55 <strong>Tudcloud VPS\u89e3\u51b3\u65b9\u6848<\/strong> \u53ef\u4ee5\u901a\u8fc7\u5185\u7f6e\u7684\u5b89\u5168\u5f3a\u5316\u548c DDoS \u4fdd\u62a4\u8282\u7701\u60a8\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1.\u7981\u7528Root\u767b\u5f55<\/h2>\n\n\n\n<p>\u8fd9 <code data-no-translation=\"\">root<\/code> \u5e10\u6237\u662f\u653b\u51fb\u8005\u7684\u9996\u8981\u76ee\u6807\u3002\u7981\u7528\u76f4\u63a5 root \u767b\u5f55\u53ef\u964d\u4f4e\u66b4\u529b\u7834\u89e3\u98ce\u9669\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u521b\u5efa\u65b0\u7528\u6237\uff1a <code data-no-translation=\"\">adduser tudcloud usermod -aG sudo tudcloud<\/code><\/li>\n\n\n\n<li>\u7f16\u8f91 SSH \u914d\u7f6e\uff1a <code data-no-translation=\"\">sudo nano \/etc\/ssh\/sshd_config<\/code> \u67e5\u627e\u5e76\u8bbe\u7f6e\uff1a <code data-no-translation=\"\">PermitRootLogin no<\/code><\/li>\n\n\n\n<li>\u91cd\u65b0\u542f\u52a8 SSH\uff1a <code data-no-translation=\"\">sudo systemctl restart ssh<\/code><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u4f7f\u7528 SSH \u5bc6\u94a5\u4ee3\u66ff\u5bc6\u7801<\/h2>\n\n\n\n<p>\u5bc6\u7801\u53ef\u80fd\u88ab\u7834\u89e3\u3002SSH \u5bc6\u94a5\u8ba4\u8bc1\u66f4\u52a0\u5b89\u5168\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u672c\u5730\u751f\u6210\u5bc6\u94a5\uff1a <code data-no-translation=\"\">ssh-keygen -t rsa -b 4096<\/code><\/li>\n\n\n\n<li>\u5c06\u516c\u94a5\u590d\u5236\u5230\u60a8\u7684 VPS\uff1a <code data-no-translation=\"\">ssh-copy-id tudcloud@your-server-ip<\/code><\/li>\n\n\n\n<li>\u7f16\u8f91 SSH \u914d\u7f6e\u4ee5\u7981\u7528\u5bc6\u7801\uff1a <code data-no-translation=\"\">PasswordAuthentication no<\/code><\/li>\n\n\n\n<li>\u91cd\u65b0\u542f\u52a8 SSH\uff1a <code data-no-translation=\"\">sudo systemctl restart ssh<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u73b0\u5728\uff0c\u53ea\u80fd\u4f7f\u7528 SSH \u5bc6\u94a5\u767b\u5f55\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3.\u66f4\u6539\u9ed8\u8ba4 SSH \u7aef\u53e3<\/h2>\n\n\n\n<p>\u653b\u51fb\u8005\u7ecf\u5e38\u626b\u63cf\u7aef\u53e3 22\u3002\u8bf7\u5c06\u5176\u66f4\u6539\u4e3a\u4e0d\u592a\u660e\u663e\u7684\u7aef\u53e3\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-translation=\"\"><code data-no-translation=\"\">Port 2222\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u914d\u7f6e\u9632\u706b\u5899\uff08UFW \/ iptables\uff09<\/h2>\n\n\n\n<p>\u9650\u5236\u4ec5\u8bbf\u95ee\u5fc5\u8981\u7684\u7aef\u53e3\uff08\u4f8b\u5982\uff0cWeb \u548c SSH\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-translation=\"\"><code data-no-translation=\"\">sudo ufw allow 2222\/tcp\nsudo ufw allow 80\/tcp\nsudo ufw allow 443\/tcp\nsudo ufw enable\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u5b89\u88c5 Fail2Ban<\/h2>\n\n\n\n<p>\u767b\u5f55\u5c1d\u8bd5\u5931\u8d25\u6b21\u6570\u8fc7\u591a\u540e\uff0cFail2Ban \u4f1a\u81ea\u52a8\u963b\u6b62 IP\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-translation=\"\"><code data-no-translation=\"\">sudo apt install fail2ban\nsudo systemctl enable fail2ban\nsudo systemctl start fail2ban\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u4fdd\u6301\u7cfb\u7edf\u66f4\u65b0<\/h2>\n\n\n\n<p>\u59cb\u7ec8\u4fdd\u6301 Linux \u7cfb\u7edf\u548c\u8f6f\u4ef6\u5305\u4e3a\u6700\u65b0\u7248\u672c\uff0c\u4ee5\u4fee\u8865\u5df2\u77e5\u6f0f\u6d1e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\" data-no-translation=\"\"><code data-no-translation=\"\">sudo apt update &amp;&amp; sudo apt upgrade -y\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\ude80 Tudcloud \u5b89\u5168 VPS \u89e3\u51b3\u65b9\u6848<\/h2>\n\n\n\n<p>\u867d\u7136\u8fd9\u4e9b\u6b65\u9aa4\u663e\u8457\u63d0\u9ad8\u4e86 VPS \u5b89\u5168\u6027\uff0c\u4f46\u67d0\u4e9b\u7528\u4f8b\uff08\u7535\u5b50\u5546\u52a1\u3001\u4f01\u4e1a\u5e94\u7528\u7a0b\u5e8f\u3001\u6e38\u620f\u670d\u52a1\u5668\uff09\u9700\u8981 <strong>\u989d\u5916\u4fdd\u62a4<\/strong>.<\/p>\n\n\n\n<p>\u5728 <strong>\u5854\u5fb7\u4e91<\/strong>\uff0c\u6211\u4eec\u63d0\u4f9b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u53d7 DDoS \u4fdd\u62a4\u7684 VPS<\/strong> \uff08\u9999\u6e2f CN2\u3001\u7f8e\u56fd AS4837 \u53ca\u66f4\u591a\u5730\u70b9\uff09<\/li>\n\n\n\n<li><strong>\u9884\u5148\u4fdd\u62a4\u7684\u670d\u52a1\u5668\u6a21\u677f<\/strong> \uff08\u7981\u7528 root \u767b\u5f55\u3001\u542f\u7528 SSH \u5bc6\u94a5\u3001\u914d\u7f6e\u9632\u706b\u5899\uff09<\/li>\n\n\n\n<li><strong>24\/7 \u6280\u672f\u652f\u6301<\/strong> \u534f\u52a9\u5904\u7406\u5b89\u5168\u4e8b\u4ef6<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 \u7acb\u5373\u83b7\u53d6\u60a8\u7684\u5b89\u5168 VPS <a href=\"https:\/\/tudcloud.com\/\">\u5854\u5fb7\u4e91<\/a> \u5e76\u4e13\u6ce8\u4e8e\u60a8\u7684\u9879\u76ee\uff0c\u800c\u6211\u4eec\u4f1a\u8d1f\u8d23\u60a8\u670d\u52a1\u5668\u7684\u5b89\u5168\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bba<\/h2>\n\n\n\n<p>\u4fdd\u62a4\u60a8\u7684 Linux VPS \u81f3\u5173\u91cd\u8981\u3002\u6700\u4f73\u5b9e\u8df5\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7981\u7528 root \u767b\u5f55<\/li>\n\n\n\n<li>\u4f7f\u7528 SSH \u5bc6\u94a5\u4ee3\u66ff\u5bc6\u7801<\/li>\n\n\n\n<li>\u66f4\u6539 SSH \u7aef\u53e3<\/li>\n\n\n\n<li>\u914d\u7f6e\u9632\u706b\u5899\u548c Fail2Ban<\/li>\n\n\n\n<li>\u5b9a\u671f\u66f4\u65b0\u60a8\u7684\u7cfb\u7edf<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u4f60\u66f4\u559c\u6b22 <strong>\u5373\u7528\u578b\u5b89\u5168 VPS<\/strong> \u6709\u4e86 DDoS \u4fdd\u62a4\uff0cTudcloud \u53ef\u4ee5\u4e3a\u60a8\u63d0\u4f9b\u4fdd\u969c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u8fd0\u884c Linux VPS \u65f6\uff0c\u5b89\u5168\u5e94\u662f\u60a8\u7684\u9996\u8981\u4efb\u52a1\u3002\u672a\u53d7\u4fdd\u62a4\u7684\u670d\u52a1\u5668\u5f88\u5bb9\u6613\u6210\u4e3a\u66b4\u529b\u7834\u89e3 SSH \u653b\u51fb\u3001\u6076\u610f\u8f6f\u4ef6\u6ce8\u5165\u6216 DDoS \u6d2a\u6c34\u653b\u51fb\u7684\u76ee\u6807\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u6bcf\u4e2a\u670d\u52a1\u5668\u6240\u6709\u8005\u90fd\u5e94\u9075\u5faa\u7684 Linux VPS \u6700\u4f73\u5b89\u5168\u5b9e\u8df5\u3002\u6211\u4eec\u8fd8\u5c06\u5c55\u793a Tudcloud VPS \u89e3\u51b3\u65b9\u6848\u5982\u4f55\u8282\u7701 [\u2026]<\/p>","protected":false},"author":1,"featured_media":93,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[21,24,20,22],"class_list":["post-90","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps-tutorials","tag-disable-root-login","tag-fail2ban","tag-linux-vps-security","tag-ssh-key-authentication"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/posts\/90","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/comments?post=90"}],"version-history":[{"count":2,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/posts\/90\/revisions"}],"predecessor-version":[{"id":92,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/posts\/90\/revisions\/92"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/media\/93"}],"wp:attachment":[{"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/media?parent=90"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/categories?post=90"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.tudcloud.com\/zh\/wp-json\/wp\/v2\/tags?post=90"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}