{"id":1582,"date":"2026-10-05T22:52:36","date_gmt":"2026-10-05T14:52:36","guid":{"rendered":"https:\/\/www.gxcom.net\/"},"modified":"2026-10-05T22:52:36","modified_gmt":"2026-10-05T14:52:36","slug":"ssh-%e5%ae%89%e5%85%a8%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.gxcom.net\/zh\/ssh-%e5%ae%89%e5%85%a8%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5\/","title":{"rendered":"SSH \u5b89\u5168\u6700\u4f73\u5b9e\u8df5\uff1a\u5982\u4f55\u4fdd\u62a4\u60a8\u7684 Linux \u670d\u52a1\u5668"},"content":{"rendered":"<p>SSH \u662f Linux \u670d\u52a1\u5668\u4e0a\u6700\u91cd\u8981\u7684\u7ba1\u7406\u63a5\u53e3\u4e4b\u4e00\u2014\u2014\u4e5f\u662f\u670d\u52a1\u5668\u83b7\u5f97\u516c\u5171 IP \u5730\u5740\u540e\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u9996\u5148\u5c1d\u8bd5\u63a2\u6d4b\u7684\u670d\u52a1\u4e4b\u4e00\u3002.<\/p>\n<p>\u5f31\u5bc6\u7801\u3001\u66b4\u9732\u7684root\u8d26\u6237\u3001\u88ab\u76d7\u7684\u79c1\u94a5\u6216\u914d\u7f6e\u4e0d\u5f53\u7684SSH\u670d\u52a1\uff0c\u90fd\u53ef\u80fd\u8ba9\u653b\u51fb\u8005\u76f4\u63a5\u5165\u4fb5\u60a8\u7684VPS\u6216\u72ec\u7acb\u670d\u52a1\u5668\u3002.<\/p>\n<p>\u597d\u6d88\u606f\u662f\uff0cSSH \u7684\u5b89\u5168\u6027\u53ef\u4ee5\u5f97\u5230\u663e\u8457\u589e\u5f3a\uff0c\u540c\u65f6\u53c8\u4e0d\u4f1a\u8ba9\u65e5\u5e38\u670d\u52a1\u5668\u7ba1\u7406\u53d8\u5f97\u4e0d\u5fc5\u8981\u5730\u590d\u6742\u3002.<\/p>\n<p>\u672c\u6307\u5357\u6db5\u76d6\u4e86\u6700\u91cd\u8981\u7684 <strong>SSH \u5b89\u5168\u6700\u4f73\u5b9e\u8df5<\/strong> \u7528\u4e8e\u4fdd\u62a4 Linux \u670d\u52a1\u5668\uff0c\u5305\u62ec SSH \u5bc6\u94a5\u3001root \u6743\u9650\u3001\u5bc6\u7801\u3001\u9632\u706b\u5899\u3001\u8eab\u4efd\u9a8c\u8bc1\u63a7\u5236\u548c\u76d1\u63a7\u3002.<\/p>\n<p><strong>\u5173\u952e \u2192 \u9650\u5236 \u2192 \u9650\u5236 \u2192 \u76d1\u63a7 \u2192 \u6062\u590d<\/strong><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-1583\" src=\"https:\/\/www.gxcom.net\/wp-content\/uploads\/2026\/10\/ssh-security-best-practice.jpg\" alt=\"\u4fdd\u62a4 Linux \u670d\u52a1\u5668\u7684 SSH \u5b89\u5168\u6700\u4f73\u5b9e\u8df5\" width=\"1000\" height=\"563\" srcset=\"https:\/\/www.gxcom.net\/wp-content\/uploads\/2026\/10\/ssh-security-best-practice.jpg 1000w, https:\/\/www.gxcom.net\/wp-content\/uploads\/2026\/10\/ssh-security-best-practice-300x169.jpg 300w, https:\/\/www.gxcom.net\/wp-content\/uploads\/2026\/10\/ssh-security-best-practice-768x432.jpg 768w, https:\/\/www.gxcom.net\/wp-content\/uploads\/2026\/10\/ssh-security-best-practice-18x10.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<h2>\u4e3a\u4ec0\u4e48 SSH \u5b89\u5168\u81f3\u5173\u91cd\u8981<\/h2>\n<p>\u5b89\u5168\u5916\u58f3\u534f\u8bae\uff08Secure Shell\uff0c\u7b80\u79f0 SSH\uff09\u53ef\u63d0\u4f9b\u5bf9 Linux \u7cfb\u7edf\u7684\u52a0\u5bc6\u8fdc\u7a0b\u8bbf\u95ee\u3002.<\/p>\n<p>\u7ba1\u7406\u5458\u901a\u5e38\u5c06\u5176\u7528\u4e8e\uff1a<\/p>\n<ul>\n<li>\u7ba1\u7406VPS\u670d\u52a1\u5668<\/li>\n<li>\u5b89\u88c5\u8f6f\u4ef6<\/li>\n<li>\u7f16\u8f91\u914d\u7f6e\u6587\u4ef6<\/li>\n<li>\u4f20\u8f93\u6587\u4ef6<\/li>\n<li>\u91cd\u65b0\u542f\u52a8\u670d\u52a1<\/li>\n<li>\u7ba1\u7406\u6570\u636e\u5e93\u548c\u5e94\u7528\u7a0b\u5e8f<\/li>\n<li>\u6267\u884c\u7cfb\u7edf\u7ef4\u62a4<\/li>\n<\/ul>\n<p>\u7531\u4e8eSSH\u80fd\u591f\u63d0\u4f9b\u5f3a\u5927\u7684\u7ba1\u7406\u6743\u9650\uff0c\u56e0\u6b64SSH\u8d26\u6237\u4e00\u65e6\u906d\u5230\u5165\u4fb5\uff0c\u53ef\u80fd\u4f1a\u9020\u6210\u4e25\u91cd\u540e\u679c\u3002.<\/p>\n<p>\u56e0\u6b64\uff0c\u4e00\u4e2a\u5b89\u5168\u7684Linux\u670d\u52a1\u5668\u4ec5\u9760\u52a0\u5bc6\u662f\u4e0d\u591f\u7684\u3002.<\/p>\n<p><strong>\u52a0\u5bc6\u8fde\u63a5 \u2260 \u5b89\u5168\u8ba4\u8bc1\u3002.<\/strong><\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bf9\u65b0\u7684VPS\u8fdb\u884c\u5b89\u5168\u52a0\u56fa\uff0c\u8bf7\u4ece\u6211\u4eec\u7684 <a href=\"https:\/\/www.gxcom.net\/zh\/%e5%a6%82%e4%bd%95%e4%bf%9d%e9%9a%9cvps%e7%9a%84%e5%ae%89%e5%85%a8\/\"><strong>VPS \u5b89\u5168\u6307\u5357<\/strong><\/a> \u6709\u5173\u66f4\u5168\u9762\u7684\u670d\u52a1\u5668\u5b89\u5168\u68c0\u67e5\u6e05\u5355\u3002.<\/p>\n<h2>SSH \u5b89\u5168\u68c0\u67e5\u6e05\u5355<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5b89\u5168\u63a7\u5236<\/th>\n<th>\u76ee\u7684<\/th>\n<th>\u4f18\u5148\u7ea7<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SSH \u5bc6\u94a5<\/td>\n<td>\u5f3a\u8ba4\u8bc1<\/td>\n<td>\u5173\u952e<\/td>\n<\/tr>\n<tr>\n<td>\u975eroot\u7528\u6237<\/td>\n<td>\u51cf\u5c11\u76f4\u63a5\u7279\u6743\u8bbf\u95ee<\/td>\n<td>\u5173\u952e<\/td>\n<\/tr>\n<tr>\n<td>\u9650\u5236 root \u767b\u5f55<\/td>\n<td>\u4fdd\u62a4root\u8d26\u6237<\/td>\n<td>\u5173\u952e<\/td>\n<\/tr>\n<tr>\n<td>\u9650\u5236\u5bc6\u7801\u767b\u5f55<\/td>\n<td>\u51cf\u5c11\u5bc6\u7801\u653b\u51fb<\/td>\n<td>\u9ad8<\/td>\n<\/tr>\n<tr>\n<td>\u9632\u706b\u5899<\/td>\n<td>\u9650\u5236\u7f51\u7edc\u66b4\u9732<\/td>\n<td>\u5173\u952e<\/td>\n<\/tr>\n<tr>\n<td>Fail2ban \/ \u901f\u7387\u63a7\u5236<\/td>\n<td>\u51cf\u5c11\u91cd\u590d\u767b\u5f55\u5c1d\u8bd5<\/td>\n<td>\u9ad8<\/td>\n<\/tr>\n<tr>\n<td>\u76d1\u6d4b<\/td>\n<td>\u68c0\u6d4b\u53ef\u7591\u8bbf\u95ee<\/td>\n<td>\u9ad8<\/td>\n<\/tr>\n<tr>\n<td>\u6062\u590d\u8bbf\u95ee<\/td>\n<td>\u9632\u6b62\u6c38\u4e45\u9501\u5b9a<\/td>\n<td>\u5173\u952e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>1. \u4fdd\u6301 OpenSSH \u548c Linux \u7cfb\u7edf\u6700\u65b0<\/h2>\n<p>SSH \u5b89\u5168\u52a0\u56fa\u8981\u4ece\u73b0\u6709\u8f6f\u4ef6\u5165\u624b\u3002.<\/p>\n<p>\u5728 Ubuntu \u6216 Debian \u4e0a\uff1a<\/p>\n<pre>sudo apt update\nsudo apt upgrade -y<\/pre>\n<p>\u66f4\u65b0\u53ef\u80fd\u5305\u542b\u9488\u5bf9 OpenSSH\u3001\u7cfb\u7edf\u5e93\u3001\u5185\u6838\u53ca\u5176\u4ed6\u7ec4\u4ef6\u7684\u5b89\u5168\u4fee\u590d\u7a0b\u5e8f\u3002.<\/p>\n<p>\u4e0d\u8981\u82b1\u51e0\u4e2a\u5c0f\u65f6\u53bb\u8c03\u6574\u8eab\u4efd\u9a8c\u8bc1\u8bbe\u7f6e\uff0c\u5374\u653e\u4efb\u5df2\u77e5\u7684\u6f0f\u6d1e\u5f97\u4e0d\u5230\u4fee\u590d\u3002.<\/p>\n<p><strong>\u7cfb\u7edf\u52a0\u56fa + \u65e0\u66f4\u65b0 = \u5b89\u5168\u63aa\u65bd\u4e0d\u5b8c\u5584\u3002.<\/strong><\/p>\n<h2>2. \u521b\u5efa\u4e00\u4e2a\u975eroot\u7ba1\u7406\u5458\u7528\u6237<\/h2>\n<p>\u8bf7\u907f\u514d\u5c06 root \u4f5c\u4e3a\u60a8\u7684\u5e38\u89c4 SSH \u8d26\u6237\u3002.<\/p>\n<p>\u5728 Ubuntu\/Debian \u4e0a\uff0c\u521b\u5efa\u4e00\u4e2a\u7528\u6237\uff1a<\/p>\n<pre>sudo adduser adminuser<\/pre>\n<p>\u7136\u540e\u5728\u9002\u5f53\u7684\u65f6\u5019\u6388\u4e88 sudo \u6743\u9650\uff1a<\/p>\n<pre>sudo usermod -aG sudo adminuser<\/pre>\n<p>\u6d4b\u8bd5\u8be5\u8d26\u6237\uff1a<\/p>\n<pre>ssh adminuser@SERVER_IP<\/pre>\n<p>\u5e76\u9a8c\u8bc1 sudo \u8bbf\u95ee\u6743\u9650\uff1a<\/p>\n<pre>sudo whoami<\/pre>\n<p>\u60a8\u5e94\u8be5\u770b\u5230\uff1a<\/p>\n<pre>root<\/pre>\n<p>\u8fd9\u63d0\u4f9b\u4e86\u7ba1\u7406\u529f\u80fd\uff0c\u540c\u65f6\u65e0\u9700\u8fdb\u884c\u5e38\u89c4\u7684\u76f4\u63a5root\u767b\u5f55\u3002.<\/p>\n<h2>3. \u4f7f\u7528 SSH \u5bc6\u94a5\u8ba4\u8bc1<\/h2>\n<p>SSH \u5bc6\u94a5\u662f\u60a8\u5728\u8fdc\u7a0b\u670d\u52a1\u5668\u8eab\u4efd\u9a8c\u8bc1\u65b9\u9762\u53ef\u4ee5\u91c7\u53d6\u7684\u6700\u91cd\u8981\u6539\u8fdb\u63aa\u65bd\u4e4b\u4e00\u3002.<\/p>\n<p>\u5728\u672c\u5730\u8ba1\u7b97\u673a\u4e0a\u751f\u6210\u4e00\u4e2a Ed25519 \u5bc6\u94a5\uff1a<\/p>\n<pre>ssh-keygen -t ed25519<\/pre>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5f3a\u5bc6\u7801\u77ed\u8bed\u6765\u4fdd\u62a4\u79c1\u94a5\uff0c\u4ece\u800c\u589e\u52a0\u4e00\u5c42\u5b89\u5168\u4fdd\u969c\u3002.<\/p>\n<p>\u4f7f\u7528\u9002\u5f53\u7684\u65b9\u6cd5\u5c06\u516c\u94a5\u590d\u5236\u5230\u670d\u52a1\u5668\u4e0a\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>ssh-copy-id adminuser@SERVER_IP<\/pre>\n<p>\u7136\u540e\uff0c\u5728\u66f4\u6539\u4efb\u4f55\u73b0\u6709\u8eab\u4efd\u9a8c\u8bc1\u65b9\u6cd5\u4e4b\u524d\uff0c\u8bf7\u5728\u65b0\u7684\u7ec8\u7aef\u4e2d\u6d4b\u8bd5\u8fde\u63a5\u3002.<\/p>\n<p><strong>\u516c\u94a5 \u2192 \u670d\u52a1\u5668<\/strong><br \/>\n<strong>\u79c1\u94a5 \u2192 \u8bf7\u59a5\u5584\u4fdd\u7ba1<\/strong><\/p>\n<p>\u5207\u52ff\u4e0a\u4f20\u3001\u901a\u8fc7\u7535\u5b50\u90ae\u4ef6\u53d1\u9001\u6216\u516c\u5f00\u5206\u4eab\u60a8\u7684\u79c1\u94a5\u3002.<\/p>\n<h2>4. \u4fdd\u62a4\u60a8\u7684\u79c1\u6709 SSH \u5bc6\u94a5<\/h2>\n<p>SSH \u5bc6\u94a5\u8ba4\u8bc1\u7684\u5b89\u5168\u6027\u5b8c\u5168\u53d6\u51b3\u4e8e\u79c1\u94a5\u7684\u5b89\u5168\u6027\u3002.<\/p>\n<p>\u826f\u597d\u505a\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u8bf7\u4ec5\u5c06\u79c1\u94a5\u4fdd\u5b58\u5728\u53ef\u4fe1\u8bbe\u5907\u4e0a<\/li>\n<li>\u4f7f\u7528\u9002\u5f53\u7684\u672c\u5730\u6587\u4ef6\u6743\u9650<\/li>\n<li>\u4f7f\u7528\u5bc6\u7801\u77ed\u8bed\u4fdd\u62a4\u91cd\u8981\u5bc6\u94a5<\/li>\n<li>\u4e0d\u8981\u5728\u4e0d\u8003\u8651\u98ce\u9669\u7684\u60c5\u51b5\u4e0b\uff0c\u5c06\u540c\u4e00\u7ec4\u7ba1\u7406\u5bc6\u94a5\u7528\u4e8e\u6240\u6709\u573a\u666f<\/li>\n<li>\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684\u952e<\/li>\n<li>\u5982\u679c\u6000\u7591\u5bc6\u94a5\u5df2\u6cc4\u9732\uff0c\u8bf7\u66f4\u6362\u5bc6\u94a5<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u56e2\u961f\u800c\u8a00\uff0c\u5e94\u907f\u514d\u8ba9\u591a\u540d\u7ba1\u7406\u5458\u968f\u610f\u5171\u7528\u4e00\u4e2a\u79c1\u94a5\u3002.<\/p>\n<p>\u4e2a\u4eba\u51ed\u8bc1\u6709\u52a9\u4e8e\u52a0\u5f3a\u95ee\u8d23\u5236\uff0c\u5e76\u5728\u7528\u6237\u4e0d\u518d\u9700\u8981\u65f6\u66f4\u65b9\u4fbf\u5730\u64a4\u9500\u5176\u8bbf\u95ee\u6743\u9650\u3002.<\/p>\n<h2>5. \u9650\u5236\u76f4\u63a5\u901a\u8fc7 SSH \u4ee5 root \u7528\u6237\u8eab\u4efd\u767b\u5f55<\/h2>\n<p>\u4e00\u65e6\u975eroot\u7ba1\u7406\u5458\u8d26\u6237\u8fd0\u884c\u6b63\u5e38\uff0c\u8bf7\u8003\u8651\u7981\u7528\u901a\u8fc7SSH\u76f4\u63a5\u767b\u5f55root\u8d26\u6237\u7684\u529f\u80fd\u3002.<\/p>\n<p>OpenSSH \u670d\u52a1\u5668\u914d\u7f6e\u901a\u5e38\u4f4d\u4e8e\uff1a<\/p>\n<pre>\/etc\/ssh\/sshd_config<\/pre>\n<p>\u6b64\u5916\uff0c\u8fd8\u53ef\u4f7f\u7528\u4ee5\u4e0b\u8def\u5f84\u4e0b\u7684\u6587\u4ef6\uff1a<\/p>\n<pre>\/etc\/ssh\/sshd_config.d\/<\/pre>\n<p>\u4e00\u79cd\u5e38\u89c1\u7684\u8bbe\u7f6e\u662f\uff1a<\/p>\n<pre>PermitRootLogin no<\/pre>\n<p>\u4f7f\u7528\u524d\uff0c\u8bf7\u786e\u8ba4\uff1a<\/p>\n<ul>\n<li>\u60a8\u7684\u7ba1\u7406\u5458\u7528\u6237\u6b63\u5728\u5de5\u4f5c<\/li>\n<li>SSH\u5bc6\u94a5\u8ba4\u8bc1\u6b63\u5e38\u5de5\u4f5c<\/li>\n<li>Sudo \u6709\u6548<\/li>\n<li>\u60a8\u62e5\u6709\u670d\u52a1\u63d0\u4f9b\u5546\u63a7\u5236\u53f0\u6216\u6062\u590d\u8bbf\u95ee\u6743\u9650<\/li>\n<\/ul>\n<p><strong>\u5728\u6d4b\u8bd5\u66ff\u6362\u4ef6\u4e4b\u524d\uff0c\u5207\u52ff\u79fb\u9664\u5f53\u524d\u7684\u8bbf\u95ee\u6743\u9650\u3002.<\/strong><\/p>\n<h2>6. \u5728\u9002\u5f53\u7684\u60c5\u51b5\u4e0b\u7981\u7528 SSH \u5bc6\u7801\u8ba4\u8bc1<\/h2>\n<p>\u5728\u5bf9\u57fa\u4e8e\u5bc6\u94a5\u7684\u8eab\u4efd\u9a8c\u8bc1\u8fdb\u884c\u5168\u9762\u6d4b\u8bd5\u540e\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u9009\u62e9\u7981\u7528 SSH \u5bc6\u7801\u8eab\u4efd\u9a8c\u8bc1\u3002.<\/p>\n<p>\u4e00\u79cd\u5178\u578b\u7684\u914d\u7f6e\u662f\uff1a<\/p>\n<pre>PasswordAuthentication no<\/pre>\n<p>\u5728\u91cd\u65b0\u52a0\u8f7d SSH \u4e4b\u524d\uff0c\u8bf7\u9a8c\u8bc1\u914d\u7f6e\uff1a<\/p>\n<pre>sudo sshd -t<\/pre>\n<p>\u5982\u679c\u8be5\u547d\u4ee4\u62a5\u544a\u4e86\u914d\u7f6e\u9519\u8bef\uff0c\u8bf7\u5728\u91cd\u65b0\u52a0\u8f7d\u670d\u52a1\u4e4b\u524d\u5148\u8fdb\u884c\u4fee\u590d\u3002.<\/p>\n<p>\u5728\u6d4b\u8bd5\u7b2c\u4e8c\u4e2a\u8fde\u63a5\u65f6\uff0c\u8bf7\u4fdd\u6301\u73b0\u6709\u7684 SSH \u4f1a\u8bdd\u4fdd\u6301\u6253\u5f00\u72b6\u6001\u3002.<\/p>\n<p>\u8fd9\u4e2a\u7b80\u5355\u7684\u64cd\u4f5c\u6d41\u7a0b\u53ef\u4ee5\u9632\u6b62\u610f\u5916\u5bfc\u81f4\u670d\u52a1\u5668\u88ab\u9501\u5b9a\u3002.<\/p>\n<h2>7. \u4e3a SSH \u914d\u7f6e\u9632\u706b\u5899<\/h2>\n<p>\u4e0d\u8981\u516c\u5f00\u90a3\u4e9b\u4e0d\u9700\u8981\u516c\u5f00\u8bbf\u95ee\u7684\u670d\u52a1\u3002.<\/p>\n<p>\u5728\u8fd0\u884c Ubuntu \u5e76\u4f7f\u7528 UFW \u7684\u7cfb\u7edf\u4e0a\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5f53\u524d\u89c4\u5219\uff1a<\/p>\n<pre>sudo ufw status verbose<\/pre>\n<p>\u5982\u679c SSH \u5fc5\u987b\u4fdd\u6301\u5bf9\u516c\u4f17\u5f00\u653e\uff0c\u8bf7\u5728\u542f\u7528\u6216\u6536\u7d27\u9632\u706b\u5899\u4e4b\u524d\uff0c\u786e\u4fdd\u5df2\u5b58\u5728\u76f8\u5e94\u7684 SSH \u89c4\u5219\u3002.<\/p>\n<p>\u5728\u53ef\u884c\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u5c06\u7ba1\u7406\u7528\u9014\u7684 SSH \u8bbf\u95ee\u6743\u9650\u9650\u5236\u5728\u53ef\u4fe1\u7684\u6e90\u7f51\u7edc\u6216\u5730\u5740\u8303\u56f4\u5185\u3002.<\/p>\n<p>\u7136\u800c\uff0c\u9759\u6001 IP \u9650\u5236\u5e76\u4e0d\u9002\u5408\u6240\u6709\u4eba\uff0c\u7279\u522b\u662f\u90a3\u4e9b\u7ecf\u5e38\u4ece\u4e0d\u540c\u7f51\u7edc\u8fde\u63a5\u7684\u7ba1\u7406\u5458\u3002.<\/p>\n<p>\u9632\u706b\u5899\u7b56\u7565\u5e94\u4e0e\u60a8\u7684\u5b9e\u9645\u8bbf\u95ee\u6a21\u5f0f\u76f8\u5339\u914d\u3002.<\/p>\n<h2>8. \u662f\u5426\u5e94\u8be5\u66f4\u6539\u9ed8\u8ba4\u7684 SSH \u7aef\u53e3\uff1f<\/h2>\n<p>\u5c06SSH\u7aef\u53e3\u4ece22\u53f7\u7aef\u53e3\u66f4\u6539\u4e3a\u5176\u4ed6\u7aef\u53e3\uff0c\u901a\u5e38\u88ab\u63a8\u8350\u4f5c\u4e3a\u4e00\u9879\u5b89\u5168\u63aa\u65bd\u3002.<\/p>\n<p>\u5b83\u53ef\u4ee5\u51cf\u5c11\u9488\u5bf9\u9ed8\u8ba4\u7aef\u53e3\u7684\u81ea\u52a8\u626b\u63cf\u4ea7\u751f\u7684\u5e72\u6270\uff0c\u4f46\u4e0d\u5e94\u5c06\u5176\u89c6\u4e3a\u4e3b\u8981\u7684\u5b89\u5168\u63a7\u5236\u63aa\u65bd\u3002.<\/p>\n<p>\u653b\u51fb\u8005\u4ecd\u7136\u53ef\u4ee5\u53d1\u73b0\u8fd0\u884c\u5728\u5176\u4ed6\u7aef\u53e3\u4e0a\u7684 SSH \u670d\u52a1\u3002.<\/p>\n<p>\u4e0d\u59a8\u5c06\u975e\u6807\u51c6\u7aef\u53e3\u7406\u89e3\u4e3a\uff1a<\/p>\n<p><strong>\u66f4\u5c11\u7684\u201c\u566a\u97f3\u201d \u2260 \u5f3a\u8ba4\u8bc1\u3002.<\/strong><\/p>\n<p>SSH\u5bc6\u94a5\u3001\u8d26\u6237\u9650\u5236\u3001\u9632\u706b\u5899\u548c\u76d1\u63a7\u7684\u91cd\u8981\u6027\u8981\u5927\u5f97\u591a\u3002.<\/p>\n<h2>9. \u9650\u5236\u54ea\u4e9b\u7528\u6237\u53ef\u4ee5\u8bbf\u95ee SSH<\/h2>\n<p>\u5982\u679c\u53ea\u6709\u7279\u5b9a\u8d26\u6237\u9700\u8981\u8fdc\u7a0b SSH \u8bbf\u95ee\uff0c\u8bf7\u636e\u6b64\u9650\u5236\u8bbf\u95ee\u6743\u9650\u3002.<\/p>\n<p>OpenSSH \u652f\u6301\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre>AllowUsers adminuser<\/pre>\n<p>\u6216\u57fa\u4e8e\u7ec4\u7684\u63a7\u4ef6\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>AllowGroups sshusers<\/pre>\n<p>\u8fd9\u4e9b\u63a7\u5236\u63aa\u65bd\u53ef\u51cf\u5c11\u80fd\u591f\u5c1d\u8bd5\u8fdc\u7a0b\u8eab\u4efd\u9a8c\u8bc1\u7684\u8d26\u6237\u6570\u91cf\u3002.<\/p>\n<p>\u5728\u5e94\u7528\u8fd9\u4e9b\u8bbe\u7f6e\u4e4b\u524d\uff0c\u8bf7\u786e\u8ba4\u5df2\u5305\u542b\u6240\u9700\u7684\u7cfb\u7edf\u7ba1\u7406\u5458\u8d26\u6237\u3002.<\/p>\n<h2>10. \u9632\u8303\u91cd\u590d\u767b\u5f55\u5c1d\u8bd5<\/h2>\n<p>\u9762\u5411\u4e92\u8054\u7f51\u7684 SSH \u670d\u52a1\u5668\u901a\u5e38\u4f1a\u6536\u5230\u81ea\u52a8\u767b\u5f55\u5c1d\u8bd5\u3002.<\/p>\n<p>Fail2ban \u53ef\u4ee5\u76d1\u63a7\u8eab\u4efd\u9a8c\u8bc1\u65e5\u5fd7\uff0c\u5e76\u6682\u65f6\u5c01\u7981\u90a3\u4e9b\u53cd\u590d\u89e6\u53d1\u5df2\u914d\u7f6e\u5931\u8d25\u89c4\u5219\u7684\u6765\u6e90\u3002.<\/p>\n<p>\u5728 Ubuntu\/Debian \u4e0a\uff1a<\/p>\n<pre>sudo apt install fail2ban -y<\/pre>\n<p>\u68c0\u67e5\u8be5\u670d\u52a1\uff1a<\/p>\n<pre>sudo systemctl status fail2ban<\/pre>\n<p>\u5e94\u5c06Fail2ban\u89c6\u4e3a\u4e00\u9053\u989d\u5916\u7684\u9632\u5fa1\u5c42\u3002.<\/p>\n<p>\u5b83\u4e0d\u80fd\u66ff\u4ee3\uff1a<\/p>\n<ul>\n<li>SSH\u5bc6\u94a5<\/li>\n<li>\u4fdd\u62a4\u7528\u6237\u8d26\u6237\u5b89\u5168<\/li>\n<li>\u9632\u706b\u5899\u63a7\u5236<\/li>\n<li>\u8f6f\u4ef6\u66f4\u65b0<\/li>\n<li>\u76d1\u6d4b<\/li>\n<\/ul>\n<p><strong>\u4e00\u79cd\u5b89\u5168\u5de5\u5177 \u2260 \u5b8c\u6574\u7684 SSH \u5b89\u5168\u3002.<\/strong><\/p>\n<h2>11. \u68c0\u67e5 SSH \u8eab\u4efd\u9a8c\u8bc1\u8bbe\u7f6e<\/h2>\n<p>\u5728\u672a\u5f04\u6e05\u695a\u6bcf\u4e2a\u8bbe\u7f6e\u7684\u4f5c\u7528\u4e4b\u524d\uff0c\u8bf7\u52ff\u76f4\u63a5\u4ece\u4e92\u8054\u7f51\u4e0a\u590d\u5236\u4e00\u4e2a\u5e9e\u5927\u7684\u201c\u7ec8\u6781 sshd_config\u201d\u6587\u4ef6\u3002.<\/p>\n<p>\u76f8\u53cd\uff0c\u8bf7\u68c0\u67e5\u90a3\u4e9b\u76f4\u63a5\u5f71\u54cd\u60a8\u7684\u8eab\u4efd\u9a8c\u8bc1\u6a21\u578b\u7684\u8bbe\u7f6e\u3002.<\/p>\n<p>\u6839\u636e\u60a8\u7684\u73af\u5883\u4e0d\u540c\uff0c\u8fd9\u4e9b\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<pre>PermitRootLogin no\nPasswordAuthentication no\nPubkeyAuthentication yes<\/pre>\n<p>\u6b63\u786e\u7684\u914d\u7f6e\u53d6\u51b3\u4e8e\u60a8\u7684 Linux \u53d1\u884c\u7248\u3001OpenSSH \u7248\u672c\u4ee5\u53ca\u8eab\u4efd\u9a8c\u8bc1\u8981\u6c42\u3002.<\/p>\n<p>\u53e6\u5916\u8bf7\u8bb0\u4f4f\uff0c\u914d\u7f6e\u7247\u6bb5\u53ef\u80fd\u4f1a\u8986\u76d6\u4e3b\u914d\u7f6e\u4e2d\u7684\u8bbe\u7f6e <code>sshd_config<\/code> \u6587\u4ef6\u3002.<\/p>\n<p>\u5728\u8ba4\u4e3a\u67d0\u9879\u66f4\u6539\u5df2\u751f\u6548\u4e4b\u524d\uff0c\u8bf7\u52a1\u5fc5\u9a8c\u8bc1\u5b9e\u9645\u914d\u7f6e\u3002.<\/p>\n<h2>12. \u51cf\u5c11\u7a7a\u95f2\u548c\u5e9f\u5f03\u7684 SSH \u4f1a\u8bdd<\/h2>\n<p>\u957f\u671f\u5b58\u5728\u7684\u65e0\u4eba\u770b\u7ba1\u7684\u7ba1\u7406\u4f1a\u8bdd\u4f1a\u589e\u52a0\u4e0d\u5fc5\u8981\u7684\u98ce\u9669\u3002.<\/p>\n<p>OpenSSH \u63d0\u4f9b\u4e86\u6709\u52a9\u4e8e\u68c0\u6d4b\u5904\u4e8e\u975e\u6d3b\u52a8\u72b6\u6001\u6216\u5df2\u65ad\u5f00\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u7684\u63a7\u5236\u529f\u80fd\u3002.<\/p>\n<p>\u5177\u4f53\u6570\u503c\u5e94\u6839\u636e\u60a8\u7684\u670d\u52a1\u5668\u7ba1\u7406\u65b9\u5f0f\u6765\u786e\u5b9a\u3002\u8fc7\u77ed\u7684\u8d85\u65f6\u65f6\u95f4\u53ef\u80fd\u4f1a\u4e2d\u65ad\u6b63\u5e38\u7684\u7ef4\u62a4\u4efb\u52a1\u3002.<\/p>\n<p>\u5176\u76ee\u7684\u5e76\u975e\u8981\u4e0d\u65ad\u65ad\u5f00\u7ba1\u7406\u5458\u7684\u8fde\u63a5\uff0c\u800c\u662f\u4e3a\u4e86\u907f\u514d\u8ba9\u88ab\u9057\u5fd8\u7684\u7279\u6743\u4f1a\u8bdd\u65e0\u9650\u671f\u4fdd\u6301\u6253\u5f00\u72b6\u6001\u3002.<\/p>\n<h2>13. \u76d1\u63a7 SSH \u767b\u5f55\u6d3b\u52a8<\/h2>\n<p>SSH \u5b89\u5168\u63aa\u65bd\u4e0d\u4f1a\u5728\u914d\u7f6e\u5b8c\u6210\u540e\u5c31\u7ed3\u675f\u3002.<\/p>\n<p>\u76d1\u63a7\u6210\u529f\u7684\u548c\u5931\u8d25\u7684\u8eab\u4efd\u9a8c\u8bc1\u6d3b\u52a8\u3002.<\/p>\n<p>\u6709\u7528\u7684\u5de5\u5177\u548c\u65e5\u5fd7\u56e0 Linux \u53d1\u884c\u7248\u800c\u5f02\uff0c\u4f46\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<pre>journalctl -u ssh<\/pre>\n<p>\u6216\u4f4d\u4e8e\u4ee5\u4e0b\u4f4d\u7f6e\u7684\u8eab\u4efd\u9a8c\u8bc1\u65e5\u5fd7\uff1a<\/p>\n<pre>\/var\/log\/<\/pre>\n<p>\u60a8\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u67e5\u770b\u6700\u8fd1\u7684\u767b\u5f55\u8bb0\u5f55\uff1a<\/p>\n<pre>\u6700\u540e<\/pre>\n<p>\u8bf7\u67e5\u627e\uff1a<\/p>\n<ul>\n<li>\u610f\u5916\u6210\u529f\u7684\u767b\u5f55<\/li>\n<li>\u591a\u6b21\u8eab\u4efd\u9a8c\u8bc1\u5931\u8d25<\/li>\n<li>\u672a\u77e5\u7528\u6237\u540d<\/li>\n<li>\u51fa\u4e4e\u610f\u6599\u7684\u767b\u5f55\u65f6\u95f4<\/li>\n<li>\u610f\u5916\u7684\u6e90\u5730\u5740<\/li>\n<li>\u65b0\u7684\u7ba1\u7406\u5458\u8d26\u6237<\/li>\n<\/ul>\n<p><strong>\u5b89\u5168\u8bbf\u95ee + \u65e0\u76d1\u63a7 = \u76f2\u70b9\u3002.<\/strong><\/p>\n<h2>14. \u5220\u9664\u65e7\u7684 SSH \u5bc6\u94a5\u548c\u8d26\u6237<\/h2>\n<p>\u8bbf\u95ee\u91cf\u5f80\u5f80\u4f1a\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u800c\u9010\u6e10\u79ef\u7d2f\u3002.<\/p>\n<p>\u67d0\u4f4d\u5f00\u53d1\u4eba\u5458\u3001\u627f\u5305\u5546\u6216\u65e7\u7b14\u8bb0\u672c\u7535\u8111\u53ef\u80fd\u5df2\u4e0d\u518d\u9700\u8981\u8bbf\u95ee\u6743\u9650\uff0c\u4f46\u5176\u51ed\u636e\u4ecd\u4f1a\u65e0\u9650\u671f\u4fdd\u6301\u6709\u6548\u3002.<\/p>\n<p>\u5b9a\u671f\u5ba1\u67e5\uff1a<\/p>\n<ul>\n<li>\u7528\u6237\u8d26\u6237<\/li>\n<li>Sudo \u6743\u9650<\/li>\n<li>\u6388\u6743\u7684 SSH \u5bc6\u94a5<\/li>\n<li>\u670d\u52a1\u8d26\u6237<\/li>\n<li>\u81ea\u52a8\u5316\u8d44\u8d28<\/li>\n<\/ul>\n<p>\u64a4\u9500\u4e0d\u518d\u9700\u8981\u7684\u8bbf\u95ee\u6743\u9650\u3002.<\/p>\n<p><strong>\u65e7\u7248 Access \u4f9d\u7136\u662f Access\u3002.<\/strong><\/p>\n<h2>15. \u7ef4\u62a4\u5e94\u6025\u63a7\u5236\u53f0\u548c\u6062\u590d\u8bbf\u95ee\u6743\u9650<\/h2>\n<p>\u5728\u5f3a\u5316SSH\u5b89\u5168\u6027\u65f6\uff0c\u6700\u5927\u7684\u98ce\u9669\u4e4b\u4e00\u5c31\u662f\u628a\u81ea\u5df1\u9501\u5728\u670d\u52a1\u5668\u5916\u9762\u3002.<\/p>\n<p>\u5728\u8fdb\u884c\u91cd\u5927\u7684\u8eab\u4efd\u9a8c\u8bc1\u6216\u9632\u706b\u5899\u914d\u7f6e\u66f4\u6539\u4e4b\u524d\uff0c\u8bf7\u5148\u4e86\u89e3\u60a8\u7684 VPS \u670d\u52a1\u5546\u63d0\u4f9b\u7684\u6062\u590d\u5de5\u5177\u3002.<\/p>\n<p>\u6839\u636e\u670d\u52a1\u63d0\u4f9b\u5546\u7684\u4e0d\u540c\uff0c\u8fd9\u4e9b\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>Web\u63a7\u5236\u53f0<\/li>\n<li>VNC \u63a7\u5236\u53f0<\/li>\n<li>\u4e32\u884c\u63a7\u5236\u53f0<\/li>\n<li>\u6551\u63f4\u73af\u5883<\/li>\n<li>\u6062\u590d\u6a21\u5f0f<\/li>\n<li>\u5feb\u7167<\/li>\n<\/ul>\n<p>\u5728\u7981\u7528 root \u6743\u9650\u6216\u5bc6\u7801\u8ba4\u8bc1\u4e4b\u524d\uff0c\u8fd9\u4e00\u70b9\u5c24\u4e3a\u91cd\u8981\u3002.<\/p>\n<p>\u4e00\u79cd\u4f1a\u963b\u6b62\u5408\u6cd5\u7ba1\u7406\u5458\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u4e25\u683c\u5b89\u5168\u914d\u7f6e\uff0c\u4ecd\u7136\u5c5e\u4e8e\u8fd0\u884c\u6545\u969c\u3002.<\/p>\n<h2>\u63a8\u8350\u7684 SSH \u5b89\u5168\u52a0\u56fa\u5de5\u4f5c\u6d41<\/h2>\n<p>\u66f4\u6539\u7684\u987a\u5e8f\u5f88\u91cd\u8981\u3002.<\/p>\n<p>\u66f4\u5b89\u5168\u7684\u5de5\u4f5c\u6d41\u7a0b\u662f\uff1a<\/p>\n<p><strong>1. \u66f4\u65b0\u670d\u52a1\u5668<\/strong><br \/>\n\u5b89\u88c5\u6700\u65b0\u7684\u5b89\u5168\u66f4\u65b0\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>2. \u521b\u5efa\u7ba1\u7406\u5458\u7528\u6237<\/strong><br \/>\n\u914d\u7f6e\u9002\u5f53\u7684 sudo \u8bbf\u95ee\u6743\u9650\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>3. \u6dfb\u52a0 SSH \u5bc6\u94a5<\/strong><br \/>\n\u6d4b\u8bd5\u5bc6\u94a5\u8ba4\u8bc1\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>4. \u7b2c\u4e8c\u5c4a\u4f1a\u8bae\u5f00\u5e55<\/strong><br \/>\n\u786e\u8ba4\u65b0\u767b\u5f55\u65b9\u5f0f\u662f\u5426\u6709\u6548\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>5. \u914d\u7f6e\u9632\u706b\u5899<\/strong><br \/>\n\u8bf7\u786e\u4fdd SSH \u59cb\u7ec8\u53ef\u8bbf\u95ee\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>6. \u9650\u5236 root \/ \u5bc6\u7801\u767b\u5f55<\/strong><br \/>\n\u53ea\u6709\u5728\u66ff\u6362\u65b9\u6cd5\u751f\u6548\u4e4b\u540e\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>7. \u9a8c\u8bc1 SSH \u914d\u7f6e<\/strong><br \/>\n\u4f7f\u7528 <code>sshd -t<\/code>.<\/p>\n<p>\u2193<\/p>\n<p><strong>8. \u76d1\u63a7<\/strong><br \/>\n\u76d1\u63a7\u8ba4\u8bc1\u6d3b\u52a8\u3002.<\/p>\n<p><strong>\u5148\u6d4b\u8bd5 \u2192 \u540e\u9650\u5236\u3002.<\/strong><\/p>\n<h2>SSH\u5bc6\u94a5\u4e0e\u5bc6\u7801\u7684\u5bf9\u6bd4<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u529f\u80fd<\/th>\n<th>SSH \u5bc6\u94a5<\/th>\n<th>\u5bc6\u7801<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u62b5\u5236\u731c\u6d4b<\/td>\n<td>\u975e\u5e38\u5f3a<\/td>\n<td>\u53d6\u51b3\u4e8e\u5bc6\u7801<\/td>\n<\/tr>\n<tr>\n<td>\u81ea\u52a8\u5316<\/td>\n<td>\u975e\u5e38\u68d2<\/td>\n<td>\u4e0d\u592a\u5408\u9002<\/td>\n<\/tr>\n<tr>\n<td>\u51ed\u8bc1\u76d7\u7528\u98ce\u9669<\/td>\n<td>\u79c1\u94a5\u5fc5\u987b\u59a5\u5584\u4fdd\u7ba1<\/td>\n<td>\u5bc6\u7801\u5fc5\u987b\u53d7\u5230\u4fdd\u62a4<\/td>\n<\/tr>\n<tr>\n<td>\u64a4\u9500<\/td>\n<td>\u5220\u9664\u6388\u6743\u5bc6\u94a5<\/td>\n<td>\u66f4\u6539\/\u7981\u7528\u8d26\u6237\u5bc6\u7801<\/td>\n<\/tr>\n<tr>\n<td>\u63a8\u8350\u7ed9\u670d\u52a1\u5668\u7ba1\u7406\u5458<\/td>\n<td>\u901a\u5e38\u662f<\/td>\n<td>\u6839\u636e\u5b89\u5168\u6a21\u578b\u4f7f\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>SSH \u5bc6\u94a5\u5e76\u975e\u9b54\u6cd5\u3002\u5982\u679c\u672a\u53d7\u4fdd\u62a4\u7684\u79c1\u94a5\u88ab\u76d7\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u5229\u7528\u5b83\u3002.<\/p>\n<p>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u7ec8\u7aef\u5b89\u5168\u548c\u79c1\u94a5\u4fdd\u62a4\u4f9d\u7136\u81f3\u5173\u91cd\u8981\u3002.<\/p>\n<h2>SSH \u5b89\u5168\u4e0e DDoS \u9632\u62a4\u662f\u4e0d\u540c\u7684<\/h2>\n<p>SSH \u5b89\u5168\u5f3a\u5316\u63aa\u65bd\u53ef\u4fdd\u62a4\u7ba1\u7406\u8bbf\u95ee\u6743\u9650\u3002.<\/p>\n<p>DDoS\u9632\u62a4\u4e3b\u8981\u4fa7\u91cd\u4e8e\u670d\u52a1\u53ef\u7528\u6027\u548c\u6076\u610f\u6d41\u91cf\u3002.<\/p>\n<p>\u4e00\u53f0\u670d\u52a1\u5668\u5373\u4f7f\u62e5\u6709\u51fa\u8272\u7684SSH\u5b89\u5168\u9632\u62a4\uff0c\u4ecd\u53ef\u80fd\u9762\u4e34\u5927\u89c4\u6a21\u7f51\u7edc\u653b\u51fb\u7684\u5a01\u80c1\u3002.<\/p>\n<p>\u540c\u6837\uff0c\u5373\u4f7f\u4f4d\u4e8e\u5f3a\u5927\u7684DDoS\u9632\u5fa1\u7cfb\u7edf\u4e4b\u540e\uff0c\u5982\u679cVPS\u7684\u7ba1\u7406\u51ed\u636e\u4e0d\u591f\u5b89\u5168\uff0c\u5b83\u4ecd\u7136\u53ef\u80fd\u906d\u5230\u5165\u4fb5\u3002.<\/p>\n<p>\u5173\u4e8e\u7f51\u7edc\u5c42\u7684\u9632\u62a4\uff0c\u8bf7\u9605\u8bfb\u6211\u4eec\u7684 <a href=\"https:\/\/www.gxcom.net\/zh\/%e5%a6%82%e4%bd%95%e9%98%b2%e8%8c%83ddos%e6%94%bb%e5%87%bb\/\"><strong>DDoS\u9632\u62a4\u6307\u5357<\/strong><\/a>.<\/p>\n<p>\u8fd9\u4e24\u79cd\u7b56\u7565\u76f8\u8f85\u76f8\u6210\uff1a<\/p>\n<p><strong>DDoS \u9632\u62a4 \u2192 \u4fdd\u969c\u53ef\u7528\u6027<\/strong><br \/>\n<strong>SSH \u5b89\u5168 \u2192 \u4fdd\u62a4\u7ba1\u7406\u5458\u8bbf\u95ee\u6743\u9650<\/strong><\/p>\n<h2>SSH \u5b89\u5168\u4e2d\u7684\u5e38\u89c1\u9519\u8bef<\/h2>\n<h3>\u51e1\u4e8b\u90fd\u4f7f\u7528Root\u6743\u9650<\/h3>\n<p>\u8bf7\u4f7f\u7528\u4e13\u7528\u7ba1\u7406\u5458\u8d26\u6237\uff0c\u5e76\u5728\u9002\u5f53\u60c5\u51b5\u4e0b\u4f7f\u7528 sudo \u547d\u4ee4\u3002.<\/p>\n<h3>\u5728\u6d4b\u8bd5 SSH \u5bc6\u94a5\u4e4b\u524d\u7981\u7528\u5bc6\u7801\u767b\u5f55<\/h3>\n<p>\u8fd9\u662f\u628a\u81ea\u5df1\u9501\u5728\u95e8\u5916\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002.<\/p>\n<h3>\u4f7f\u7528\u4e0d\u540c\u7684\u7aef\u53e3\u80fd\u8ba9SSH\u66f4\u5b89\u5168<\/h3>\n<p>\u66f4\u6539\u7aef\u53e3\u53ef\u80fd\u4f1a\u51cf\u5c11\u81ea\u52a8\u5316\u653b\u51fb\u4ea7\u751f\u7684\u566a\u97f3\uff0c\u4f46\u4e0d\u80fd\u66ff\u4ee3\u5b89\u5168\u8ba4\u8bc1\u3002.<\/p>\n<h3>\u4e0e\u6240\u6709\u4eba\u5171\u4eab\u4e00\u4e2a\u79c1\u94a5<\/h3>\n<p>\u4e2a\u4eba\u51ed\u8bc1\u80fd\u66f4\u597d\u5730\u843d\u5b9e\u8d23\u4efb\uff0c\u4e14\u64a4\u9500\u8d77\u6765\u66f4\u65b9\u4fbf\u3002.<\/p>\n<h3>\u6c38\u4e45\u4fdd\u7559\u65e7\u5bc6\u94a5\u7684\u6388\u6743<\/h3>\n<p>\u5ba1\u67e5\u5e76\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684\u51ed\u636e\u3002.<\/p>\n<h3>\u5728\u4e0d\u8fdb\u884c\u76d1\u63a7\u7684\u60c5\u51b5\u4e0b\u5c06SSH\u5bf9\u5916\u5f00\u653e<\/h3>\n<p>\u5e94\u52a0\u5f3a\u5bf9\u516c\u5171\u884c\u653f\u670d\u52a1\u4e2d\u53ef\u7591\u8eab\u4efd\u9a8c\u8bc1\u6d3b\u52a8\u7684\u76d1\u63a7\u3002.<\/p>\n<h3>\u4e00\u6b21\u6027\u8fdb\u884c\u591a\u9879 SSH \u66f4\u6539<\/h3>\n<p>\u6bcf\u6b21\u53ea\u66f4\u6539\u4e00\u5c42\u5b89\u5168\u63aa\u65bd\uff0c\u5e76\u5728\u6bcf\u4e2a\u4e3b\u8981\u6b65\u9aa4\u4e4b\u540e\u6d4b\u8bd5\u8bbf\u95ee\u60c5\u51b5\u3002.<\/p>\n<h2>\u5982\u679c SSH \u7a81\u7136\u53d8\u6162\u4e86\u600e\u4e48\u529e\uff1f<\/h2>\n<p>SSH \u901f\u5ea6\u53d8\u6162\u5e76\u4e0d\u4e00\u5b9a\u610f\u5473\u7740\u53d7\u5230\u4e86\u653b\u51fb\u3002.<\/p>\n<p>\u53ef\u80fd\u7684\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>CPU \u8d1f\u8f7d\u8fc7\u9ad8<\/li>\n<li>\u5185\u5b58\u538b\u529b<\/li>\n<li>\u78c1\u76d8 I\/O \u74f6\u9888<\/li>\n<li>\u7f51\u7edc\u5ef6\u8fdf<\/li>\n<li>\u6570\u636e\u5305\u4e22\u5931<\/li>\n<li>DNS \u6216\u8eab\u4efd\u9a8c\u8bc1\u5ef6\u8fdf<\/li>\n<\/ul>\n<p>\u5982\u679c\u6574\u4e2a\u670d\u52a1\u5668\u8fd0\u884c\u7f13\u6162\uff0c\u8bf7\u4f7f\u7528\u6211\u4eec\u7684 <a href=\"https:\/\/www.gxcom.net\/zh\/%e6%8e%92%e6%9f%a5%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%bf%90%e8%a1%8c%e7%bc%93%e6%85%a2%e7%9a%84%e9%97%ae%e9%a2%98\/\"><strong>\u670d\u52a1\u5668\u8fd0\u884c\u7f13\u6162\u6545\u969c\u6392\u9664\u6307\u5357<\/strong><\/a> \u4ee5\u68c0\u67e5 CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u548c\u7f51\u7edc\u65b9\u9762\u7684\u74f6\u9888\u3002.<\/p>\n<h2>SSH \u5b89\u5168\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/h2>\n<h3>SSH \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u5b89\u5168\u7684\u5417\uff1f<\/h3>\n<p>SSH \u63d0\u4f9b\u4e86\u52a0\u5bc6\u901a\u4fe1\uff0c\u4f46\u6574\u4f53\u5b89\u5168\u6027\u53d6\u51b3\u4e8e\u8eab\u4efd\u9a8c\u8bc1\u3001\u7528\u6237\u8d26\u6237\u3001\u8f6f\u4ef6\u66f4\u65b0\u3001\u9632\u706b\u5899\u914d\u7f6e\u3001\u79c1\u94a5\u4fdd\u62a4\u4ee5\u53ca\u76d1\u63a7\u3002.<\/p>\n<h3>\u6211\u5e94\u8be5\u7981\u7528 root \u7684 SSH \u767b\u5f55\u5417\uff1f<\/h3>\n<p>\u9650\u5236\u76f4\u63a5\u901a\u8fc7SSH\u4ee5root\u8eab\u4efd\u767b\u5f55\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7cfb\u7edf\u52a0\u56fa\u63aa\u65bd\u3002\u9996\u5148\uff0c\u521b\u5efa\u5e76\u6d4b\u8bd5\u53e6\u4e00\u4e2a\u5177\u6709\u6709\u6548sudo\u6743\u9650\u548c\u6062\u590d\u8bbf\u95ee\u6743\u9650\u7684\u7ba1\u7406\u5458\u8d26\u6237\u3002.<\/p>\n<h3>\u6211\u5e94\u8be5\u7981\u7528 SSH \u5bc6\u7801\u5417\uff1f<\/h3>\n<p>\u5982\u679c SSH \u5bc6\u94a5\u8ba4\u8bc1\u5df2\u6b63\u786e\u914d\u7f6e\u5e76\u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u7981\u7528\u5bc6\u7801\u8ba4\u8bc1\u53ef\u4ee5\u51cf\u5c11\u5bc6\u7801\u731c\u6d4b\u653b\u51fb\u3002\u8bf7\u52a1\u5fc5\u5148\u786e\u4fdd\u62e5\u6709\u53ef\u9760\u7684\u5bc6\u94a5\u548c\u6062\u590d\u8bbf\u95ee\u9014\u5f84\u3002.<\/p>\n<h3>\u6211\u5e94\u8be5\u66f4\u6539 SSH \u7aef\u53e3 22 \u5417\uff1f<\/h3>\n<p>\u66f4\u6539\u7aef\u53e3\u53ef\u4ee5\u51cf\u5c11\u81ea\u52a8\u626b\u63cf\u4ea7\u751f\u7684\u5e72\u6270\uff0c\u4f46\u4e0d\u5e94\u5c06\u5176\u89c6\u4e3a\u4e3b\u8981\u7684\u5b89\u5168\u63aa\u65bd\u3002\u5f3a\u8eab\u4efd\u9a8c\u8bc1\u548c\u8bbf\u95ee\u63a7\u5236\u66f4\u4e3a\u91cd\u8981\u3002.<\/p>\n<h3>SSH\u5bc6\u94a5\u5b8c\u5168\u5b89\u5168\u5417\uff1f<\/h3>\n<p>\u6ca1\u6709\u4efb\u4f55\u4e00\u79cd\u8eab\u4efd\u9a8c\u8bc1\u65b9\u6cd5\u662f\u5b8c\u5168\u6ca1\u6709\u98ce\u9669\u7684\u3002SSH\u5bc6\u94a5\u867d\u7136\u80fd\u63d0\u4f9b\u5f3a\u8eab\u4efd\u9a8c\u8bc1\uff0c\u4f46\u5fc5\u987b\u4fdd\u62a4\u79c1\u94a5\u4e0d\u88ab\u76d7\u53d6\uff0c\u5e76\u5728\u6388\u6743\u5931\u6548\u65f6\u5c06\u5176\u5220\u9664\u3002.<\/p>\n<h3>Fail2ban \u80fd\u4fdd\u969c SSH \u7684\u5b89\u5168\u5417\uff1f<\/h3>\n<p>Fail2ban \u6709\u52a9\u4e8e\u51cf\u5c11\u91cd\u590d\u7684\u8eab\u4efd\u9a8c\u8bc1\u5c1d\u8bd5\uff0c\u4f46\u8fd9\u4ec5\u662f\u4e00\u5c42\u9632\u62a4\u3002\u5e94\u5c06\u5176\u4e0e SSH \u5bc6\u94a5\u3001\u9632\u706b\u5899\u89c4\u5219\u3001\u7cfb\u7edf\u66f4\u65b0\u53ca\u76d1\u63a7\u63aa\u65bd\u7ed3\u5408\u4f7f\u7528\u3002.<\/p>\n<h3>\u6211\u53ef\u4ee5\u5c06SSH\u8bbf\u95ee\u9650\u5236\u4e3a\u4e00\u4e2aIP\u5730\u5740\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u524d\u63d0\u662f\u60a8\u7684\u9632\u706b\u5899\u548c\u7f51\u7edc\u914d\u7f6e\u652f\u6301\u6b64\u529f\u80fd\u3002\u5982\u679c\u60a8\u62e5\u6709\u4e00\u4e2a\u53ef\u9760\u7684\u53ef\u4fe1\u6e90IP\u5730\u5740\uff0c\u8fd9\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u5b89\u5168\u98ce\u9669\uff0c\u4f46\u5bf9\u4e8e\u4f7f\u7528\u52a8\u6001\u7f51\u7edc\u7684\u7ba1\u7406\u5458\u6765\u8bf4\uff0c\u53ef\u80fd\u4f1a\u5e26\u6765\u4e0d\u4fbf\u3002.<\/p>\n<h2>SSH \u5b89\u5168\u6700\u4f73\u5b9e\u8df5\u68c0\u67e5\u6e05\u5355<\/h2>\n<ul>\n<li>\u2713 \u4fdd\u6301 Linux \u548c OpenSSH \u5904\u4e8e\u6700\u65b0\u72b6\u6001<\/li>\n<li>\u2713 \u521b\u5efa\u4e00\u4e2a\u975eroot\u7684\u7ba1\u7406\u7528\u6237<\/li>\n<li>\u2713 \u4f7f\u7528 SSH \u5bc6\u94a5\u8ba4\u8bc1<\/li>\n<li>\u2713 \u4fdd\u62a4\u79c1\u6709 SSH \u5bc6\u94a5<\/li>\n<li>\u2713 \u9650\u5236\u76f4\u63a5\u901a\u8fc7 SSH \u4ee5 root \u8eab\u4efd\u767b\u5f55<\/li>\n<li>\u2713 \u68c0\u67e5\u5bc6\u7801\u8ba4\u8bc1<\/li>\n<li>\u2713 \u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219<\/li>\n<li>\u2713 \u4e0d\u8981\u4ec5\u4f9d\u8d56\u66f4\u6539 SSH \u7aef\u53e3<\/li>\n<li>\u2713 \u9650\u5236\u6388\u6743\u7684 SSH \u7528\u6237<\/li>\n<li>\u2713 \u9632\u8303\u91cd\u590d\u767b\u5f55\u5c1d\u8bd5<\/li>\n<li>\u2713 \u68c0\u67e5\u8eab\u4efd\u9a8c\u8bc1\u8bbe\u7f6e<\/li>\n<li>\u2713 \u59a5\u5584\u7ba1\u7406\u7a7a\u95f2\u4f1a\u8bdd<\/li>\n<li>\u2713 \u76d1\u63a7\u767b\u5f55\u6d3b\u52a8<\/li>\n<li>\u2713 \u5220\u9664\u65e7\u8d26\u6237\u548c\u5bc6\u94a5<\/li>\n<li>\u2713 \u4fdd\u6301\u7d27\u6025\u6062\u590d\u8bbf\u95ee\u6743\u9650<\/li>\n<\/ul>\n<h2>\u6700\u7ec8\u5efa\u8bae<\/h2>\n<p>\u6700\u6709\u6548\u7684 <strong>SSH \u5b89\u5168\u6700\u4f73\u5b9e\u8df5<\/strong> \u5e76\u4e0d\u662f\u6666\u6da9\u96be\u61c2\u7684\u914d\u7f6e\u6280\u5de7\u3002.<\/p>\n<p>\u5148\u4ece\u4e00\u4e2a\u7b80\u5355\u7684\u5206\u5c42\u7b56\u7565\u5f00\u59cb\uff1a<\/p>\n<p><strong>\u66f4\u65b0<\/strong><br \/>\n\u8bf7\u53ca\u65f6\u4e3a Linux \u548c OpenSSH \u5b89\u88c5\u8865\u4e01\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>\u5173\u952e\u8bcd<\/strong><br \/>\n\u8bf7\u4f7f\u7528\u5f3aSSH\u5bc6\u94a5\u8ba4\u8bc1\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>RESTRICT<\/strong><br \/>\n\u964d\u4f4e root\u3001\u7528\u6237\u548c\u7f51\u7edc\u7684\u98ce\u9669\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>LIMIT<\/strong><br \/>\n\u63a7\u5236\u91cd\u590d\u7684\u8eab\u4efd\u9a8c\u8bc1\u5c1d\u8bd5\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>MONITOR<\/strong><br \/>\n\u6ce8\u610f\u8c01\u6b63\u5728\u5c1d\u8bd5\u8bbf\u95ee\u8be5\u670d\u52a1\u5668\u3002.<\/p>\n<p>\u2193<\/p>\n<p><strong>\u6062\u590d<\/strong><br \/>\n\u5728\u6536\u7d27 SSH \u5b89\u5168\u63aa\u65bd\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u4fdd\u7559\u63a7\u5236\u53f0\u6216\u7d27\u6025\u6062\u590d\u8bbf\u95ee\u6743\u9650\u3002.<\/p>\n<p>\u6700\u91cd\u8981\u7684\u662f\uff1a<\/p>\n<p><strong>\u5728\u64a4\u9500\u8bbf\u95ee\u6743\u9650\u4e4b\u524d\uff0c\u8bf7\u5148\u6d4b\u8bd5\u8bbf\u95ee\u6743\u9650\u3002.<\/strong><\/p>\n<p><strong>SSH \u5b89\u5168\u662f\u5206\u5c42\u5b9e\u73b0\u7684\u3002.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>SSH \u662f Linux \u670d\u52a1\u5668\u4e0a\u6700\u91cd\u8981\u7684\u7ba1\u7406\u63a5\u53e3\u4e4b\u4e00\u2014\u2014\u4e5f\u662f\u670d\u52a1\u5668\u83b7\u5f97\u516c\u5171 IP \u5730\u5740\u540e\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u9996\u5148\u5c1d\u8bd5\u63a2\u6d4b\u7684\u670d\u52a1\u4e4b\u4e00\u3002\u5f31\u5bc6\u7801\u3001\u66b4\u9732\u7684 root \u8d26\u6237\u2026\u2026<\/p>","protected":false},"author":1,"featured_media":1583,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[787,780,281,270,805,278,803,804,784,279],"class_list":["post-1582","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-fail2ban","tag-firewall","tag-linux-security","tag-linux-server","tag-openssh","tag-server-security","tag-ssh-hardening","tag-ssh-keys","tag-ssh-security","tag-vps-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>SSH Security Best Practices: Protect Your Linux Server | GXCOM<\/title>\n<meta name=\"description\" content=\"Learn SSH security best practices to protect your Linux server with SSH keys, root restrictions, firewall rules, Fail2ban, access 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