{"id":237,"date":"2023-12-01T22:39:01","date_gmt":"2023-01-31T12:23:13","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/"},"modified":"2025-08-01T02:45:30","modified_gmt":"2025-07-31T18:45:30","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/","title":{"rendered":"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357"},"content":{"rendered":"<h3>\u4ecb\u7ecd<\/h3>\n<p>SSH\u662f\u8fde\u63a5\u5230\u4e91\u670d\u52a1\u5668\u7684\u4e8b\u5b9e\u6807\u51c6\u65b9\u6cd5\u3002\u5b83\u7a33\u5b9a\u4e14\u5177\u6709\u6269\u5c55\u6027\u2014\u2014\u968f\u7740\u65b0\u7684\u52a0\u5bc6\u6807\u51c6\u7684\u53d1\u5c55\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b83\u4eec\u6765\u751f\u6210\u65b0\u7684SSH\u5bc6\u94a5\uff0c\u786e\u4fdd\u6838\u5fc3\u534f\u8bae\u7684\u5b89\u5168\u6027\u3002\u7136\u800c\uff0c\u6ca1\u6709\u4efb\u4f55\u534f\u8bae\u6216\u8f6f\u4ef6\u6808\u662f\u7edd\u5bf9\u5b89\u5168\u7684\uff0cSSH\u5728\u4e92\u8054\u7f51\u4e0a\u7684\u5e7f\u6cdb\u90e8\u7f72\u610f\u5473\u7740\u5b83\u4ee3\u8868\u7740\u4e00\u79cd\u975e\u5e38\u53ef\u9884\u6d4b\u7684\u653b\u51fb\u9762\u6216\u653b\u51fb\u5411\u91cf\uff0c\u9ed1\u5ba2\u53ef\u4ee5\u901a\u8fc7\u5b83\u6765\u8bd5\u56fe\u83b7\u53d6\u8bbf\u95ee\u6743\u9650\u3002<\/p>\n<p>\u4efb\u4f55\u66b4\u9732\u5728\u7f51\u7edc\u4e0a\u7684\u670d\u52a1\u90fd\u53ef\u80fd\u6210\u4e3a\u6f5c\u5728\u76ee\u6807\u3002\u5982\u679c\u4f60\u5ba1\u67e5\u4e00\u4e0b\u5728\u4efb\u4f55\u7e41\u5fd9\u670d\u52a1\u5668\u4e0a\u8fd0\u884c\u7684SSH\u670d\u52a1\u7684\u65e5\u5fd7\uff0c\u4f60\u7ecf\u5e38\u4f1a\u770b\u5230\u91cd\u590d\u7684\u3001\u7cfb\u7edf\u5316\u7684\u767b\u5f55\u5c1d\u8bd5\uff0c\u8fd9\u4ee3\u8868\u7740\u7528\u6237\u548c\u673a\u5668\u4eba\u8fdb\u884c\u7684\u66b4\u529b\u7834\u89e3\u653b\u51fb\u3002\u5c3d\u7ba1\u4f60\u53ef\u4ee5\u5bf9SSH\u670d\u52a1\u8fdb\u884c\u4e00\u4e9b\u4f18\u5316\uff0c\u4ee5\u51cf\u5c11\u8fd9\u4e9b\u653b\u51fb\u6210\u529f\u7684\u53ef\u80fd\u6027\u63a5\u8fd1\u96f6\uff0c\u6bd4\u5982\u7981\u7528\u5bc6\u7801\u8ba4\u8bc1\u6765\u4f7f\u7528SSH\u5bc6\u94a5\u8fdb\u884c\u8ba4\u8bc1\uff0c\u5b83\u4eec\u4ecd\u7136\u53ef\u80fd\u6784\u6210\u4e00\u79cd\u5c0f\u578b\u4f46\u6301\u7eed\u5b58\u5728\u7684\u98ce\u9669\u3002<\/p>\n<p>\u5bf9\u4e8e\u90a3\u4e9b\u5b8c\u5168\u4e0d\u80fd\u5bb9\u5fcd\u6b64\u8d23\u4efb\u7684\u5927\u89c4\u6a21\u751f\u4ea7\u90e8\u7f72\uff0c\u901a\u5e38\u4f1a\u5728\u5176SSH\u670d\u52a1\u524d\u9762\u90e8\u7f72\u4e00\u4e2aVPN\uff08\u5982WireGuard\uff09\uff0c\u8fd9\u6837\u5c31\u4e0d\u53ef\u80fd\u76f4\u63a5\u4ece\u5916\u90e8\u4e92\u8054\u7f51\u8fde\u63a5\u5230\u9ed8\u8ba4\u7684SSH\u7aef\u53e322\uff0c\u9664\u975e\u4f7f\u7528\u989d\u5916\u7684\u8f6f\u4ef6\u62bd\u8c61\u6216\u7f51\u5173\u3002\u8fd9\u4e9bVPN\u89e3\u51b3\u65b9\u6848\u88ab\u5e7f\u6cdb\u4fe1\u8d56\uff0c\u4f46\u4f1a\u589e\u52a0\u590d\u6742\u6027\uff0c\u5e76\u53ef\u80fd\u7834\u574f\u4e00\u4e9b\u81ea\u52a8\u5316\u6d41\u7a0b\u6216\u5176\u4ed6\u5c0f\u578b\u8f6f\u4ef6\u94a9\u5b50\u3002<\/p>\n<p>\u5728\u627f\u8bfa\u6216\u51b3\u5b9a\u4f7f\u7528\u5b8c\u6574\u7684VPN\u8bbe\u7f6e\u4e4b\u524d\uff0c\u4f60\u53ef\u4ee5\u5b9e\u65bd\u4e00\u4e2a\u53eb\u505aFail2ban\u7684\u5de5\u5177\u3002Fail2ban\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u89c4\u5219\uff0c\u5728\u4e00\u5b9a\u6570\u91cf\u7684\u767b\u5f55\u5931\u8d25\u5c1d\u8bd5\u540e\u81ea\u52a8\u66f4\u6539\u9632\u706b\u5899\u914d\u7f6e\uff0c\u4ece\u800c\u663e\u8457\u51cf\u5c11\u66b4\u529b\u7834\u89e3\u653b\u51fb\u3002\u8fd9\u5c06\u4f7f\u4f60\u7684\u670d\u52a1\u5668\u80fd\u591f\u5728\u6ca1\u6709\u4f60\u7684\u5e72\u9884\u7684\u60c5\u51b5\u4e0b\u52a0\u5f3a\u5bf9\u8fd9\u4e9b\u8bbf\u95ee\u5c1d\u8bd5\u7684\u9632\u5fa1\u3002<\/p>\n<p>\u5728\u672c\u6307\u5357\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u5b89\u88c5\u548c\u4f7f\u7528Fail2ban\u3002<\/p>\n<h2>\u524d\u63d0\u6761\u4ef6<\/h2>\n<p>\u4e3a\u5b8c\u6210\u672c\u6307\u5357\uff0c\u60a8\u5c06\u9700\u8981\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u4e00\u53f0Rocky Linux 9\u670d\u52a1\u5668\u548c\u4e00\u4e2a\u5177\u6709sudo\u6743\u9650\u7684\u975eroot\u7528\u6237\u3002\u60a8\u53ef\u4ee5\u5728\u6211\u4eec\u7684<a href=\"#\">Rocky Linux 9\u521d\u59cb\u670d\u52a1\u5668\u8bbe\u7f6e\u6307\u5357<\/a>\u4e2d\u4e86\u89e3\u5982\u4f55\u8bbe\u7f6e\u5177\u6709\u8fd9\u4e9b\u6743\u9650\u7684\u7528\u6237\u3002\u60a8\u8fd8\u5e94\u8be5\u5728\u670d\u52a1\u5668\u4e0a\u8fd0\u884cfirewalld\uff0c\u8fd9\u5728\u6211\u4eec\u7684\u521d\u59cb\u670d\u52a1\u5668\u8bbe\u7f6e\u6307\u5357\u4e2d\u4e5f\u6709\u4ecb\u7ecd\u3002<\/li>\n<li>\uff08\u53ef\u9009\uff09\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\uff0c\u60a8\u53ef\u4ee5\u4ece\u8be5\u670d\u52a1\u5668\u8fde\u63a5\u5230\u60a8\u7684\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u60a8\u5c06\u4f7f\u7528\u5b83\u6765\u6d4b\u8bd5\u6545\u610f\u88ab\u7981\u6b62\u7684\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u4e00\u6b65 &#8211; \u5b89\u88c5 Fail2ban<\/h2>\n<p>Fail2ban\u5728Rocky\u7684\u9ed8\u8ba4\u8f6f\u4ef6\u4ed3\u5e93\u4e2d\u4e0d\u53ef\u7528\u3002\u7136\u800c\uff0c\u5b83\u53ef\u5728EPEL\uff08\u4f01\u4e1a\u7ea7Linux\u589e\u5f3a\u8f6f\u4ef6\u5305\uff09\u4ed3\u5e93\u4e2d\u627e\u5230\uff0c\u8be5\u4ed3\u5e93\u901a\u5e38\u7528\u4e8e\u5b89\u88c5Red Hat\u548cRocky Linux\u7684\u7b2c\u4e09\u65b9\u8f6f\u4ef6\u5305\u3002\u5982\u679c\u60a8\u5c1a\u672a\u5c06EPEL\u6dfb\u52a0\u5230\u7cfb\u7edf\u8f6f\u4ef6\u6e90\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528dnf\u6dfb\u52a0\u8be5\u4ed3\u5e93\uff0c\u5c31\u50cf\u5b89\u88c5\u5176\u4ed6\u4efb\u4f55\u8f6f\u4ef6\u5305\u4e00\u6837\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-bash\">sudo dnf install epel-release -y<\/code><\/pre>\n<p>\u5f53\u5b89\u88c5\u65b0\u8f6f\u4ef6\u65f6\uff0cdnf\u8f6f\u4ef6\u5305\u7ba1\u7406\u5668\u5c06\u4f1a\u68c0\u67e5EPEL\u6e90\uff0c\u4ee5\u53ca\u60a8\u9ed8\u8ba4\u7684\u8f6f\u4ef6\u6e90\u3002\u8bf7\u7ee7\u7eed\u5b89\u88c5Fail2ban\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-bash\">sudo dnf install fail2ban -y<\/code><\/pre>\n<p>\u5b89\u88c5\u5b8cFail2ban\u540e\uff0c\u5b83\u5c06\u81ea\u52a8\u8bbe\u7f6e\u4e00\u4e2a\u540e\u53f0\u670d\u52a1\u3002\u7136\u800c\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5b83\u88ab\u7981\u7528\uff0c\u56e0\u4e3a\u4e00\u4e9b\u9ed8\u8ba4\u8bbe\u7f6e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e0d\u671f\u671b\u7684\u5f71\u54cd\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528systemctl\u547d\u4ee4\u6765\u9a8c\u8bc1\u8fd9\u4e00\u70b9\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-bash\">systemctl status fail2ban.service<\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code class=\"language-text\">\u25cb fail2ban.service - Fail2Ban Service\r\n   Loaded: loaded (\/lib\/systemd\/system\/fail2ban.service; disabled; vendor preset: disabled)\r\n   Active: inactive (dead)\r\n     Docs: man:fail2ban(1)<\/code><\/pre>\n<p>\u60a8\u53ef\u4ee5\u7acb\u5373\u542f\u7528Fail2ban\uff0c\u4f46\u9996\u5148\u60a8\u9700\u8981\u67e5\u770b\u4e00\u4e9b\u5176\u529f\u80fd\u3002<\/p>\n<h2>\u7b2c\u4e8c\u6b65 &#8211; \u914d\u7f6eFail2ban<\/h2>\n<p>Fail2ban\u670d\u52a1\u5c06\u5176\u914d\u7f6e\u6587\u4ef6\u4fdd\u5b58\u5728<code>\/etc\/fail2ban<\/code>\u76ee\u5f55\u4e2d\u3002\u5176\u4e2d\u6709\u4e00\u4e2a\u540d\u4e3a<code>jail.conf<\/code>\u7684\u9ed8\u8ba4\u6587\u4ef6\u3002\u8f6c\u5230\u8be5\u76ee\u5f55\u5e76\u4f7f\u7528<code>head -20<\/code>\u6253\u5370\u8be5\u6587\u4ef6\u7684\u524d20\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-bash\">cd \/etc\/fail2ban\r\nhead -20 jail.conf<\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<h2>\u8b66\u544a\uff1aFail2Ban 0.9.0 \u7248\u672c\u8fdb\u884c\u4e86\u91cd\u5927\u91cd\u6784\u3002\u8bf7\u6839\u636e\u60a8\u7684\u8bbe\u7f6e\u5ba1\u67e5\u5e76\u81ea\u5b9a\u4e49\u914d\u7f6e\u3002<\/h2>\n<p><strong>\u91cd\u8981\u63d0\u793a\uff1a<\/strong>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u60a8\u4e0d\u5e94\u76f4\u63a5\u4fee\u6539\u6b64\u6587\u4ef6\u3002\u8bf7\u5728 <code>jail.local<\/code> \u6587\u4ef6\u6216 <code>jail.d\/<\/code> \u76ee\u5f55\u4e0b\u7684\u72ec\u7acb <code>.conf<\/code> \u6587\u4ef6\u4e2d\u8fdb\u884c\u81ea\u5b9a\u4e49\u8bbe\u7f6e\u3002<\/p>\n<h3>\u5982\u4f55\u6fc0\u6d3b Jail\uff1a<\/h3>\n<p><strong>\u60a8\u4e0d\u5e94\u4fee\u6539\u6b64\u6587\u4ef6\u3002<\/strong>\u5b83\u53ef\u80fd\u4f1a\u5728\u5206\u53d1\u66f4\u65b0\u65f6\u88ab\u8986\u76d6\u6216\u6539\u8fdb\u3002<\/p>\n<p>\u8bf7\u5728 <code>jail.local<\/code> \u6587\u4ef6\u6216 <code>jail.d\/customisation.local<\/code> \u4e2d\u63d0\u4f9b\u81ea\u5b9a\u4e49\u8bbe\u7f6e\u3002\u4f8b\u5982\uff0c\u8981\u66f4\u6539\u6240\u6709 jail \u7684\u9ed8\u8ba4\u5c01\u7981\u65f6\u95f4\u5e76\u542f\u7528 <code>ssh-iptables<\/code> jail\uff0c\u53ef\u4ee5\u5728 <code>.local<\/code> \u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\uff08\u672a\u6ce8\u91ca\u7684\uff09\u5185\u5bb9\u3002\u8be6\u60c5\u8bf7\u53c2\u9605 <code>man 5 jail.conf<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code>[DEFAULT]\r\n<\/code><\/pre>\n<p>\u5982\u60a8\u6240\u89c1\uff0c\u8be5\u6587\u4ef6\u7684\u524d\u51e0\u884c\u4ee5 <code>#<\/code> \u5b57\u7b26\u5f00\u5934\uff0c\u8868\u793a\u8fd9\u4e9b\u884c\u662f\u6ce8\u91ca\uff0c\u800c\u975e\u914d\u7f6e\u3002\u540c\u65f6\uff0c\u60a8\u4e5f\u4f1a\u6ce8\u610f\u5230\uff0c\u8fd9\u4e9b\u6ce8\u91ca\u6307\u793a\u60a8\u4e0d\u8981\u76f4\u63a5\u4fee\u6539\u8be5\u6587\u4ef6\u3002\u76f8\u53cd\uff0c\u60a8\u6709\u4e24\u4e2a\u9009\u62e9\uff1a\u8981\u4e48\u5728 <code>jail.d\/<\/code> \u76ee\u5f55\u4e2d\u521b\u5efa\u591a\u4e2a\u6587\u4ef6\u6765\u4e3a Fail2Ban \u521b\u5efa\u72ec\u7acb\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u8981\u4e48\u5728 <code>jail.local<\/code> \u6587\u4ef6\u4e2d\u521b\u5efa\u5e76\u96c6\u4e2d\u6240\u6709\u672c\u5730\u8bbe\u7f6e\u3002\u6bcf\u5f53 Fail2Ban \u672c\u8eab\u66f4\u65b0\u65f6\uff0c<code>jail.conf<\/code> \u6587\u4ef6\u4e5f\u4f1a\u5b9a\u671f\u66f4\u65b0\uff0c\u5e76\u4f5c\u4e3a\u9ed8\u8ba4\u8bbe\u7f6e\u7684\u6765\u6e90\u3002\u5982\u679c\u60a8\u6ca1\u6709\u8fdb\u884c\u4efb\u4f55\u8986\u76d6\uff0c\u5219\u5c06\u4f7f\u7528\u8be5\u6587\u4ef6\u4e2d\u7684\u8bbe\u7f6e\u3002<\/p>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a <code>jail.local<\/code> \u7684\u6587\u4ef6\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u590d\u5236 <code>jail.conf<\/code> \u6587\u4ef6\u6765\u5b9e\u73b0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token function\">sudo<\/span> <span class=\"token function\">cp<\/span> jail.conf jail.local\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u60a8\u53ef\u4ee5\u5f00\u59cb\u8fdb\u884c\u914d\u7f6e\u66f4\u6539\u3002\u5728 <code>vi<\/code> \u6216\u60a8\u559c\u6b22\u7684\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token function\">sudo<\/span> <span class=\"token function\">vi<\/span> jail.local\r\n<\/code><\/pre>\n<p>\u5f53\u60a8\u6d4f\u89c8\u6587\u4ef6\u65f6\uff0c\u672c\u6559\u7a0b\u5c06\u56de\u987e\u4e00\u4e9b\u60a8\u53ef\u80fd\u60f3\u8981\u66f4\u65b0\u7684\u9009\u9879\u3002\u6587\u4ef6\u9876\u90e8\u9644\u8fd1\u7684 <code>[DEFAULT]<\/code> \u90e8\u5206\u4e2d\u7684\u8bbe\u7f6e\u5c06\u5e94\u7528\u4e8e Fail2Ban \u652f\u6301\u7684\u6240\u6709\u670d\u52a1\u3002\u6587\u4ef6\u7684\u5176\u4ed6\u90e8\u5206\u8fd8\u5305\u542b <code>[sshd]<\/code> \u548c\u5176\u4ed6\u670d\u52a1\u7684\u6807\u9898\uff0c\u5176\u4e2d\u5305\u542b\u9488\u5bf9\u7279\u5b9a\u670d\u52a1\u7684\u8bbe\u7f6e\uff0c\u8fd9\u4e9b\u8bbe\u7f6e\u5c06\u8986\u76d6\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/p>\n<h3><code>\/etc\/fail2ban\/jail.local<\/code> \u6587\u4ef6\u89e3\u6790\uff1a<\/h3>\n<pre class=\"post-pre\"><code>[DEFAULT]\r\n. . .\r\nbantime = 10m\r\n. . .\r\n<\/code><\/pre>\n<p><code>bantime<\/code> \u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5ba2\u6237\u7aef\u5728\u672a\u80fd\u6b63\u786e\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u65f6\u88ab\u7981\u6b62\u7684\u65f6\u95f4\u957f\u5ea6\uff0c\u4ee5\u79d2\u4e3a\u5355\u4f4d\u8ba1\u7b97\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u8bbe\u7f6e\u4e3a 10 \u5206\u949f\u3002<\/p>\n<h3><code>\/etc\/fail2ban\/jail.local<\/code> \u914d\u7f6e\u8be6\u89e3\uff1a<\/h3>\n<pre class=\"post-pre\"><code>[DEFAULT]\r\n. . .\r\nfindtime = 10m\r\nmaxretry = 5\r\n. . .\r\n<\/code><\/pre>\n<p>\u4e0b\u9762\u7684\u4e24\u4e2a\u53c2\u6570\u662f <code>findtime<\/code> \u548c <code>maxretry<\/code>\u3002\u5b83\u4eec\u5171\u540c\u7528\u4e8e\u5efa\u7acb\u5ba2\u6237\u7aef\u88ab\u89c6\u4e3a\u975e\u6cd5\u7528\u6237\u5e76\u5e94\u8be5\u88ab\u7981\u6b62\u7684\u6761\u4ef6\u3002<\/p>\n<p><code>maxretry<\/code> \u53d8\u91cf\u8bbe\u7f6e\u4e86\u5ba2\u6237\u7aef\u5728 <code>findtime<\/code> \u5b9a\u4e49\u7684\u65f6\u95f4\u7a97\u53e3\u5185\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u7684\u5c1d\u8bd5\u6b21\u6570\u4e0a\u9650\uff0c\u8d85\u8fc7\u8be5\u6b21\u6570\u5219\u88ab\u5c01\u7981\u3002\u9ed8\u8ba4\u8bbe\u7f6e\u4e0b\uff0cFail2Ban \u670d\u52a1\u5c06\u4f1a\u5728 10 \u5206\u949f\u7684\u65f6\u95f4\u7a97\u53e3\u5185\uff0c\u5bf9\u5931\u8d25\u5c1d\u8bd5\u767b\u5f55 5 \u6b21\u7684\u5ba2\u6237\u7aef\u8fdb\u884c\u5c01\u7981\u3002<\/p>\n<h3>\u4fee\u6539 <code>\/etc\/fail2ban\/jail.local<\/code> \u6587\u4ef6\uff1a<\/h3>\n<pre class=\"post-pre\"><code>[DEFAULT]\r\n. . .\r\ndestemail = root@localhost\r\nsender = root@&lt;fq-hostname&gt;\r\nmta = sendmail\r\n. . .\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u9700\u8981\u5728 Fail2Ban \u91c7\u53d6\u884c\u52a8\u65f6\u63a5\u6536\u7535\u5b50\u90ae\u4ef6\u8b66\u62a5\uff0c\u60a8\u5e94\u8be5\u8bc4\u4f30 <code>destemail<\/code>\u3001<code>sendername<\/code> \u548c <code>mta<\/code> \u8bbe\u7f6e\u3002<code>destemail<\/code> \u53c2\u6570\u8bbe\u7f6e\u5e94\u63a5\u6536\u5c01\u7981\u6d88\u606f\u7684\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u3002<code>sendername<\/code> \u8bbe\u7f6e\u7535\u5b50\u90ae\u4ef6\u4e2d\u201c\u53d1\u4ef6\u4eba\u201d\u5b57\u6bb5\u7684\u503c\u3002<code>mta<\/code> \u53c2\u6570\u914d\u7f6e\u5c06\u7528\u4e8e\u53d1\u9001\u90ae\u4ef6\u7684\u90ae\u4ef6\u670d\u52a1\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6b64\u8bbe\u7f6e\u4e3a <code>sendmail<\/code>\uff0c\u4f46\u60a8\u53ef\u80fd\u5e0c\u671b\u4f7f\u7528 Postfix \u6216\u5176\u4ed6\u90ae\u4ef6\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h3><code>\/etc\/fail2ban\/jail.local<\/code>\uff1a\u672c\u5730\u5c01\u7981\u8bbe\u7f6e\u6587\u4ef6<\/h3>\n<pre class=\"post-pre\"><code>[DEFAULT]\r\n. . .\r\naction = %(action_)s\r\n. . .\r\n<\/code><\/pre>\n<p>\u5f53 Fail2Ban \u60f3\u8981\u5b9e\u65bd\u7981\u6b62\u65f6\uff0c\u6b64\u53c2\u6570\u914d\u7f6e Fail2Ban \u6240\u91c7\u53d6\u7684\u64cd\u4f5c\u3002\u8be5\u53c2\u6570\u5728\u79bb\u6b64\u53c2\u6570\u4e4b\u524d\u7684\u6587\u4ef6\u4e2d\u5b9a\u4e49\u503c <code>action_<\/code>\u3002\u9ed8\u8ba4\u64cd\u4f5c\u662f\u66f4\u65b0\u9632\u706b\u5899\u914d\u7f6e\uff0c\u4ee5\u62d2\u7edd\u6765\u81ea\u8fdd\u89c4\u4e3b\u673a\u7684\u6d41\u91cf\uff0c\u76f4\u5230\u7981\u6b62\u65f6\u95f4\u8fc7\u671f\u3002<\/p>\n<p>\u9ed8\u8ba4\u63d0\u4f9b\u4e86\u5176\u4ed6\u7684\u52a8\u4f5c\u811a\u672c\uff0c\u60a8\u53ef\u4ee5\u5c06 <code>$(action_)<\/code> \u66ff\u6362\u4e3a\u4e0a\u8ff0\u811a\u672c\u3002<\/p>\n<h3><code>\/etc\/fail2ban\/jail.local<\/code>\uff1a\u5931\u6548\u5c01\u9501\/\u9519\u8bef\u5c01\u9501\/\u60e9\u7f5a\u5c01\u9501\u7684\u672c\u5730\u6587\u4ef6<\/h3>\n<pre class=\"post-pre\"><code>\u2026\r\n# ban &amp; send an e-mail with whois report to the destemail.\r\naction_mw = %(action_)s\r\n            %(mta)s-whois[sender=\"%(sender)s\", dest=\"%(destemail)s\", protocol=\"%(protocol)s\", chain=\"%(chain)s\"]\r\n\r\n# ban &amp; send an e-mail with whois report and relevant log lines\r\n# to the destemail.\r\naction_mwl = %(action_)s\r\n             %(mta)s-whois-lines[sender=\"%(sender)s\", dest=\"%(destemail)s\", logpath=\"%(logpath)s\", chain=\"%(chain)s\"]\r\n\r\n# See the IMPORTANT note in action.d\/xarf-login-attack for when to use this action\r\n#\r\n# ban &amp; send a xarf e-mail to abuse contact of IP address and include relevant log lines\r\n# to the destemail.\r\naction_xarf = %(action_)s\r\n             xarf-login-attack[service=%(__name__)s, sender=\"%(sender)s\", logpath=\"%(logpath)s\", port=\"%(port)s\"]\r\n\r\n# ban IP on CloudFlare &amp; send an e-mail with whois report and relevant log lines\r\n# to the destemail.\r\naction_cf_mwl = cloudflare[cfuser=\"%(cfemail)s\", cftoken=\"%(cfapikey)s\"]\r\n                %(mta)s-whois-lines[sender=\"%(sender)s\", dest=\"%(destemail)s\", logpath=\"%(logpath)s\", chain=\"%(chain)s\"]\r\n\u2026\r\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c<code>action_mw<\/code> \u6267\u884c\u64cd\u4f5c\u5e76\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\uff0c<code>action_mwl<\/code> \u6267\u884c\u64cd\u4f5c\u3001\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u5e76\u5305\u62ec\u65e5\u5fd7\u8bb0\u5f55\uff0c\u800c <code>action_cf_mwl<\/code> \u9664\u4e86\u6267\u884c\u6240\u6709\u4e0a\u8ff0\u64cd\u4f5c\u5916\uff0c\u8fd8\u5411\u4e0e\u60a8\u7684\u8d26\u6237\u5173\u8054\u7684 Cloudflare API \u53d1\u9001\u66f4\u65b0\u4ee5\u5c01\u7981\u653b\u51fb\u8005\u3002<\/p>\n<h3>\u4e2a\u4eba Jail \u8bbe\u7f6e<\/h3>\n<p>\u63a5\u4e0b\u6765\u662f\u914d\u7f6e\u6587\u4ef6\u4e2d\u4e0e\u5355\u4e2a\u670d\u52a1\u6709\u5173\u7684\u90e8\u5206\u3002\u8fd9\u4e9b\u90e8\u5206\u7531\u8282\u6807\u9898\u6307\u5b9a\uff0c\u4f8b\u5982 <code>[sshd]<\/code>\u3002<\/p>\n<p>\u9700\u8981\u901a\u8fc7\u5728\u6807\u9898\u4e0b\u6dfb\u52a0 <code>enabled = true<\/code> \u884c\u5e76\u8bbe\u7f6e\u5176\u4ed6\u914d\u7f6e\uff0c\u5206\u522b\u542f\u7528\u8fd9\u4e9b\u90e8\u5206\u4e2d\u7684\u6bcf\u4e00\u4e2a\u3002<\/p>\n<h3><code>\/etc\/fail2ban\/jail.local<\/code> \u6587\u4ef6\uff1a<\/h3>\n<pre class=\"post-pre\"><code>[<mark>jail_to_enable<\/mark>]\r\n. . .\r\nenabled = <mark>true<\/mark>\r\n. . .\r\n<\/code><\/pre>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u542f\u7528 SSH Jail\u3002\u5b83\u5e94\u8be5\u4f4d\u4e8e\u5404\u4e2a Jail \u8bbe\u7f6e\u7684\u9876\u90e8\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u9ed8\u8ba4\u53c2\u6570\u5c06\u4f1a\u8d77\u4f5c\u7528\uff0c\u4f46\u662f\u60a8\u9700\u8981\u5728 <code>[sshd]<\/code> \u6807\u9898\u4e0b\u6dfb\u52a0\u4e00\u884c\u914d\u7f6e\uff0c\u5373 <code>enabled = true<\/code>\u3002<\/p>\n<h3><code>\/etc\/fail2ban\/jail.local<\/code> \u7684\u4e2d\u6587\u7ffb\u8bd1\uff1a<\/h3>\n<p><code>\/etc\/fail2ban\/jail.local<\/code><\/p>\n<pre class=\"post-pre\"><code>#\r\n# JAILS\r\n#\r\n\r\n#\r\n# SSH servers\r\n#\r\n\r\n[sshd]\r\n\r\n# To use more aggressive sshd modes set filter parameter \"mode\" in jail.local:\r\n# normal (default), ddos, extra or aggressive (combines all).\r\n# See \"tests\/files\/logs\/sshd\" or \"filter.d\/sshd.conf\" for usage example and details.\r\n#mode   = normal\r\n<mark>enabled = true<\/mark>\r\nport    = ssh\r\nlogpath = %(sshd_log)s\r\nbackend = %(sshd_backend)s\r\n<\/code><\/pre>\n<p>\u5728\u6b64\u8bbe\u7f6e\u4e2d\uff0c\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u7684\u914d\u7f6e\uff0c\u4f8b\u5982\u8fc7\u6ee4\u5668\u8bbe\u7f6e\uff0c\u5b83\u7528\u4e8e\u5224\u65ad\u65e5\u5fd7\u4e2d\u7684\u884c\u662f\u5426\u8868\u793a\u8eab\u4efd\u9a8c\u8bc1\u5931\u8d25\u3002\u6b64\u5916\uff0c\u8fd8\u4e3aFail2Ban\u63d0\u4f9b\u4e86\u65e5\u5fd7\u8def\u5f84\uff0c\u6307\u793a\u7279\u5b9a\u670d\u52a1\u7684\u65e5\u5fd7\u6587\u4ef6\u6240\u5728\u4f4d\u7f6e\u3002<\/p>\n<p>\u8fc7\u6ee4\u5668\u7684\u503c\u5b9e\u9645\u4e0a\u662f\u5bf9\u4f4d\u4e8e<code>\/etc\/fail2ban\/filter.d<\/code>\u76ee\u5f55\u4e2d\u6587\u4ef6\u7684\u5f15\u7528\uff0c\u5176\u4e2d<code>.conf<\/code>\u6269\u5c55\u540d\u5df2\u88ab\u7701\u7565\u3002\u8fd9\u4e9b\u6587\u4ef6\u5305\u542b\u6b63\u5219\u8868\u8fbe\u5f0f\uff08\u4e00\u79cd\u5e38\u89c1\u7684\u6587\u672c\u89e3\u6790\u7b80\u5199\uff09\uff0c\u7528\u4e8e\u786e\u5b9a\u65e5\u5fd7\u4e2d\u7684\u884c\u662f\u5426\u4e3a\u8eab\u4efd\u9a8c\u8bc1\u5931\u8d25\u7684\u5c1d\u8bd5\u3002\u5728\u672c\u6307\u5357\u4e2d\uff0c\u6211\u4eec\u4e0d\u4f1a\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e9b\u6587\u4ef6\uff0c\u56e0\u4e3a\u5b83\u4eec\u76f8\u5f53\u590d\u6742\uff0c\u800c\u4e14\u9884\u5b9a\u4e49\u7684\u8bbe\u7f6e\u901a\u5e38\u80fd\u5f88\u597d\u5730\u5339\u914d\u76f8\u5e94\u7684\u884c\u3002<\/p>\n<p>\u7136\u800c\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u67e5\u770b\u8be5\u76ee\u5f55\u6765\u4e86\u89e3\u6709\u54ea\u4e9b\u7c7b\u578b\u7684\u8fc7\u6ee4\u5668\u53ef\u4f9b\u9009\u62e9\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">ls<\/span> \/etc\/fail2ban\/filter.d<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5982\u679c\u60a8\u770b\u5230\u4e00\u4e2a\u770b\u8d77\u6765\u4e0e\u60a8\u6b63\u5728\u4f7f\u7528\u7684\u670d\u52a1\u76f8\u5173\u7684\u6587\u4ef6\uff0c\u60a8\u5e94\u8be5\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\u6253\u5f00\u5b83\u3002\u5927\u591a\u6570\u6587\u4ef6\u90fd\u6709\u76f8\u5f53\u8be6\u7ec6\u7684\u6ce8\u91ca\uff0c\u60a8\u81f3\u5c11\u5e94\u8be5\u80fd\u591f\u5224\u65ad\u51fa\u8be5\u811a\u672c\u65e8\u5728\u9632\u8303\u54ea\u79cd\u7c7b\u578b\u7684\u6761\u4ef6\u3002\u8fd9\u4e9b\u8fc7\u6ee4\u5668\u5927\u591a\u5728<code>jail.conf<\/code>\u6587\u4ef6\u4e2d\u6709\u5bf9\u5e94\u7684\uff08\u5df2\u7981\u7528\uff09\u90e8\u5206\uff0c\u5982\u679c\u9700\u8981\u7684\u8bdd\uff0c\u6211\u4eec\u53ef\u4ee5\u5728<code>jail.local<\/code>\u6587\u4ef6\u4e2d\u542f\u7528\u8fd9\u4e9b\u90e8\u5206\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u6b63\u5728\u4f7f\u7528Nginx\u63d0\u4f9b\u7f51\u7ad9\u670d\u52a1\uff0c\u5e76\u610f\u8bc6\u5230\u60a8\u7684\u7f51\u7ad9\u4e2d\u6709\u4e00\u4e2a\u53d7\u5bc6\u7801\u4fdd\u62a4\u7684\u90e8\u5206\u6b63\u906d\u53d7\u767b\u5f55\u5c1d\u8bd5\u7684\u653b\u51fb\u3002\u60a8\u53ef\u4ee5\u544a\u8bc9Fail2Ban\u4f7f\u7528<code>nginx-http-auth.conf<\/code>\u6587\u4ef6\u6765\u68c0\u67e5<code>\/var\/log\/nginx\/error.log<\/code>\u6587\u4ef6\u4e2d\u7684\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n<p>\u8fd9\u5b9e\u9645\u4e0a\u5df2\u5728\u60a8\u7684<code>\/etc\/fail2ban\/jail.conf<\/code>\u6587\u4ef6\u4e2d\u7684\u4e00\u4e2a\u540d\u4e3a<code>[nginx-http-auth]<\/code>\u7684\u90e8\u5206\u8bbe\u7f6e\u597d\u4e86\u3002\u60a8\u53ea\u9700\u8981\u6dfb\u52a0<code>enabled<\/code>\u53c2\u6570\u5373\u53ef\u3002<\/p>\n<div>\/etc\/fail2ban\/jail.local \u53ef\u8fdb\u884c\u672c\u5730\u4fee\u6539<\/p>\n<pre class=\"post-pre\"><code>. . .\r\n[nginx-http-auth]\r\n\r\nenabled = <mark>true<\/mark>\r\n. . .\r\n<\/code><\/pre>\n<p>\u5f53\u60a8\u5b8c\u6210\u7f16\u8f91\u540e\uff0c\u8bf7\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662fvi\uff0c\u8bf7\u4f7f\u7528<code>:x<\/code>\u6765\u4fdd\u5b58\u5e76\u9000\u51fa\u3002\u6b64\u65f6\uff0c\u60a8\u53ef\u4ee5\u542f\u7528Fail2ban\u670d\u52a1\uff0c\u4ee5\u4fbf\u4ece\u73b0\u5728\u5f00\u59cb\u81ea\u52a8\u8fd0\u884c\u3002\u9996\u5148\uff0c\u8fd0\u884c<code>systemctl enable<\/code>\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> systemctl <span class=\"token builtin class-name\">enable<\/span> fail2ban<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u7136\u540e\uff0c\u4f7f\u7528<code>systemctl start<\/code>\u624b\u52a8\u542f\u52a8\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> systemctl start fail2ban<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528<code>systemctl status<\/code>\u547d\u4ee4\u6765\u9a8c\u8bc1\u5b83\u662f\u5426\u6b63\u5728\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> systemctl status fail2ban<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u25cf fail2ban.service &#8211; Fail2Ban \u670d\u52a1<br \/>   Loaded: loaded (\/lib\/systemd\/system\/fail2ban.service; enabled; vendor preset: disabled)<br \/>   Active: active (running) since Wed 2022-09-14 20:48:40 UTC; 2s ago<br \/>     Docs: man:fail2ban(1)<br \/> Main PID: 39396 (fail2ban-server)<br \/>    Tasks: 5 (limit: 1119)<br \/>   Memory: 12.9M<br \/>   CGroup: \/system.slice\/fail2ban.service<br \/>           \u2514\u250039396 \/usr\/bin\/python3.6 -s \/usr\/bin\/fail2ban-server -xf start<br \/>Sep 14 20:48:40 rocky9-tester systemd[1]: Starting Fail2Ban \u670d\u52a1&#8230;<br \/>\nSep 14 20:48:40 rocky9-tester systemd[1]: Started Fail2Ban \u670d\u52a1.<br \/>\nSep 14 20:48:41 rocky9-tester fail2ban-server[39396]: Server ready<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>\u5728\u63a5\u4e0b\u6765\u7684\u6b65\u9aa4\u4e2d\uff0c\u60a8\u5c06\u5c55\u793aFail2ban\u7684\u5b9e\u9645\u64cd\u4f5c\u3002<\/p>\n<h2>\u7b2c\u4e09\u6b65 &#8211; \u6d4b\u8bd5\u5c01\u7981\u7b56\u7565\uff08\u53ef\u9009\uff09<\/h2>\n<p>\u4ece\u53e6\u4e00\u4e2a\u670d\u52a1\u5668\u4e0a\uff08\u4e00\u4e2a\u5c06\u6765\u4e0d\u9700\u8981\u767b\u5f55\u5230\u60a8\u7684Fail2ban\u670d\u52a1\u5668\u7684\u670d\u52a1\u5668\uff09\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06\u8be5\u7b2c\u4e8c\u4e2a\u670d\u52a1\u5668\u5c01\u7981\u6765\u6d4b\u8bd5\u89c4\u5219\u3002\u767b\u5f55\u5230\u60a8\u7684\u7b2c\u4e8c\u4e2a\u670d\u52a1\u5668\u540e\uff0c\u5c1d\u8bd5\u901a\u8fc7SSH\u8fde\u63a5\u5230Fail2ban\u670d\u52a1\u5668\u3002\u60a8\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u7528\u6237\u540d\u8fdb\u884c\u8fde\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">ssh<\/span> blah@<mark>your_server<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5728\u5bc6\u7801\u63d0\u793a\u4e2d\u8f93\u5165\u968f\u673a\u5b57\u7b26\u3002\u91cd\u590d\u51e0\u6b21\u6b64\u64cd\u4f5c\u3002\u5728\u67d0\u4e2a\u65f6\u523b\uff0c\u60a8\u6536\u5230\u7684\u9519\u8bef\u4fe1\u606f\u5e94\u8be5\u4ece\u201c\u6743\u9650\u88ab\u62d2\u7edd\u201d\u53d8\u4e3a\u201c\u8fde\u63a5\u88ab\u62d2\u7edd\u201d\u3002\u8fd9\u8868\u660e\u60a8\u7684\u7b2c\u4e8c\u4e2a\u670d\u52a1\u5668\u5df2\u88abFail2ban\u670d\u52a1\u5668\u5c01\u7981\u3002<\/p>\n<p>\u5728\u60a8\u7684Fail2ban\u670d\u52a1\u5668\u4e0a\uff0c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5<code>fail2ban-client<\/code>\u7684\u8f93\u51fa\u6765\u67e5\u770b\u65b0\u7684\u89c4\u5219\u3002<code>fail2ban-client<\/code>\u662fFail2ban\u63d0\u4f9b\u7684\u989d\u5916\u547d\u4ee4\uff0c\u7528\u4e8e\u68c0\u67e5\u5176\u8fd0\u884c\u914d\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> fail2ban-client status<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Status<br \/>|- Number of jail: 1<br \/>`- Jail list: sshd<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>\u5982\u679c\u60a8\u8fd0\u884c<code>fail2ban-client status sshd<\/code>\u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u67e5\u770b\u88ab\u7981\u6b62\u901a\u8fc7SSH\u8bbf\u95ee\u7684IP\u5730\u5740\u5217\u8868\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> fail2ban-client status sshd<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Status for the jail: sshd<br \/>|- Filter<br \/>|  |- Currently failed: 2<br \/>|  |- Total failed: 7<br \/>|  `- Journal matches: _SYSTEMD_UNIT=sshd.service + _COMM=sshd<br \/>`- Actions<br \/>   |- Currently banned: 1<br \/>   |- Total banned: 1<br \/>   `- Banned IP list: <mark>134.209.165.184<\/mark><\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>\u88ab\u7981\u6b62\u8bbf\u95ee\u7684IP\u5217\u8868\u5e94\u8be5\u53cd\u6620\u51fa\u60a8\u7684\u7b2c\u4e8c\u4e2a\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u73b0\u5728\uff0c\u60a8\u5e94\u8be5\u80fd\u591f\u4e3a\u60a8\u7684\u670d\u52a1\u914d\u7f6e\u4e00\u4e9b\u5c01\u7981\u7b56\u7565\u4e86\u3002Fail2Ban \u662f\u4e00\u79cd\u4fdd\u62a4\u4efb\u4f55\u4f7f\u7528\u8eab\u4efd\u9a8c\u8bc1\u7684\u670d\u52a1\u7c7b\u578b\u7684\u6709\u6548\u65b9\u5f0f\u3002\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u66f4\u591a\u5173\u4e8e Fail2Ban \u7684\u5de5\u4f5c\u539f\u7406\uff0c\u53ef\u4ee5\u67e5\u770b\u6211\u4eec\u5173\u4e8e Fail2Ban \u89c4\u5219\u548c\u6587\u4ef6\u5de5\u4f5c\u65b9\u5f0f\u7684\u6559\u7a0b\u3002<\/p>\n<p>\u6709\u5173\u5982\u4f55\u4f7f\u7528 Fail2Ban \u4fdd\u62a4\u5176\u4ed6\u670d\u52a1\u7684\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u9605\u8bfb\u300a\u5982\u4f55\u4f7f\u7528 Fail2Ban \u4fdd\u62a4 Nginx \u670d\u52a1\u5668\u300b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ecb\u7ecd SSH\u662f\u8fde\u63a5\u5230\u4e91\u670d\u52a1\u5668\u7684\u4e8b\u5b9e\u6807\u51c6\u65b9\u6cd5\u3002\u5b83\u7a33\u5b9a\u4e14\u5177\u6709\u6269\u5c55\u6027\u2014\u2014\u968f\u7740\u65b0\u7684\u52a0\u5bc6\u6807\u51c6\u7684\u53d1\u5c55\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b83\u4eec\u6765\u751f\u6210\u65b0 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[892,432,891,893,214],"class_list":["post-237","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-fail2ban","tag-rocky-linux-9","tag-ssh","tag-893","tag-214"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5b66\u4e60\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528Fail2Ban\uff0c\u6709\u6548\u62b5\u5fa1SSH\u66b4\u529b\u7834\u89e3\u653b\u51fb\uff0c\u63d0\u5347\u670d\u52a1\u5668\u5b89\u5168\u3002\u672c\u6307\u5357\u63d0\u4f9b\u8be6\u7ec6\u6b65\u9aa4\uff0c\u52a9\u60a8\u8f7b\u677e\u4fdd\u62a4SSH\u670d\u52a1\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5982\u4f55\u5728rocky-linux-9\u4e0a\u4f7f\u7528fail2ban\u6765\u4fdd\u62a4ssh\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357\" \/>\n<meta property=\"og:description\" content=\"\u5b66\u4e60\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528Fail2Ban\uff0c\u6709\u6548\u62b5\u5fa1SSH\u66b4\u529b\u7834\u89e3\u653b\u51fb\uff0c\u63d0\u5347\u670d\u52a1\u5668\u5b89\u5168\u3002\u672c\u6307\u5357\u63d0\u4f9b\u8be6\u7ec6\u6b65\u9aa4\uff0c\u52a9\u60a8\u8f7b\u677e\u4fdd\u62a4SSH\u670d\u52a1\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5982\u4f55\u5728rocky-linux-9\u4e0a\u4f7f\u7528fail2ban\u6765\u4fdd\u62a4ssh\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-01-31T12:23:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-31T18:45:30+00:00\" \/>\n<meta name=\"author\" content=\"\u6e05, \u626c\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u626c\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/\",\"name\":\"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-01-31T12:23:13+00:00\",\"dateModified\":\"2025-07-31T18:45:30+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461\"},\"description\":\"\u5b66\u4e60\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528Fail2Ban\uff0c\u6709\u6548\u62b5\u5fa1SSH\u66b4\u529b\u7834\u89e3\u653b\u51fb\uff0c\u63d0\u5347\u670d\u52a1\u5668\u5b89\u5168\u3002\u672c\u6307\u5357\u63d0\u4f9b\u8be6\u7ec6\u6b65\u9aa4\uff0c\u52a9\u60a8\u8f7b\u677e\u4fdd\u62a4SSH\u670d\u52a1\u3002\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/zh\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461\",\"name\":\"\u6e05, \u626c\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g\",\"caption\":\"\u6e05, \u626c\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyang\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357 - Blog - Silicon Cloud","description":"\u5b66\u4e60\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528Fail2Ban\uff0c\u6709\u6548\u62b5\u5fa1SSH\u66b4\u529b\u7834\u89e3\u653b\u51fb\uff0c\u63d0\u5347\u670d\u52a1\u5668\u5b89\u5168\u3002\u672c\u6307\u5357\u63d0\u4f9b\u8be6\u7ec6\u6b65\u9aa4\uff0c\u52a9\u60a8\u8f7b\u677e\u4fdd\u62a4SSH\u670d\u52a1\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/\u5982\u4f55\u5728rocky-linux-9\u4e0a\u4f7f\u7528fail2ban\u6765\u4fdd\u62a4ssh\u3002\/","og_locale":"zh_CN","og_type":"article","og_title":"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357","og_description":"\u5b66\u4e60\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528Fail2Ban\uff0c\u6709\u6548\u62b5\u5fa1SSH\u66b4\u529b\u7834\u89e3\u653b\u51fb\uff0c\u63d0\u5347\u670d\u52a1\u5668\u5b89\u5168\u3002\u672c\u6307\u5357\u63d0\u4f9b\u8be6\u7ec6\u6b65\u9aa4\uff0c\u52a9\u60a8\u8f7b\u677e\u4fdd\u62a4SSH\u670d\u52a1\u3002","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/\u5982\u4f55\u5728rocky-linux-9\u4e0a\u4f7f\u7528fail2ban\u6765\u4fdd\u62a4ssh\u3002\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-01-31T12:23:13+00:00","article_modified_time":"2025-07-31T18:45:30+00:00","author":"\u6e05, \u626c","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u6e05, \u626c","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/","name":"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-01-31T12:23:13+00:00","dateModified":"2025-07-31T18:45:30+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461"},"description":"\u5b66\u4e60\u5982\u4f55\u5728Rocky Linux 9\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528Fail2Ban\uff0c\u6709\u6548\u62b5\u5fa1SSH\u66b4\u529b\u7834\u89e3\u653b\u51fb\uff0c\u63d0\u5347\u670d\u52a1\u5668\u5b89\u5168\u3002\u672c\u6307\u5357\u63d0\u4f9b\u8be6\u7ec6\u6b65\u9aa4\uff0c\u52a9\u60a8\u8f7b\u677e\u4fdd\u62a4SSH\u670d\u52a1\u3002","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/zh\/blog\/"},{"@type":"ListItem","position":2,"name":"Rocky Linux 9 SSH\u5b89\u5168\uff1aFail2Ban\u9632\u62a4\u914d\u7f6e\u7ec8\u6781\u6307\u5357"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461","name":"\u6e05, \u626c","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g","caption":"\u6e05, \u626c"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyang\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8rocky-linux-9%e4%b8%8a%e4%bd%bf%e7%94%a8fail2ban%e6%9d%a5%e4%bf%9d%e6%8a%a4ssh%e3%80%82\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=237"}],"version-history":[{"count":3,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/237\/revisions"}],"predecessor-version":[{"id":109719,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/237\/revisions\/109719"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}