{"id":16037,"date":"2024-11-18T08:32:54","date_gmt":"2024-11-18T00:32:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/16037\/"},"modified":"2024-11-18T08:32:54","modified_gmt":"2024-11-18T00:32:54","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8centos%e7%b3%bb%e7%bb%9f%e7%9a%84%e6%97%a5%e5%bf%97%e8%ae%b0%e5%bd%95%e5%8a%9f%e8%83%bd%e6%9d%a5%e5%88%86%e6%9e%90%e5%ae%89%e5%85%a8%e4%ba%8b%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/16037\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528CentOS\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6"},"content":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528centos\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6<\/p>\n<p>\u5f15\u8a00\uff1a<br \/>\u5728\u5f53\u4eca\u7684\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u5b89\u5168\u4e8b\u4ef6\u548c\u653b\u51fb\u884c\u4e3a\u65e5\u76ca\u589e\u591a\u3002\u4e3a\u4e86\u4fdd\u62a4\u7cfb\u7edf\u7684\u5b89\u5168\uff0c\u53ca\u65f6\u53d1\u73b0\u5e76\u5e94\u5bf9\u5b89\u5168\u5a01\u80c1\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002CentOS\u7cfb\u7edf\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5206\u6790\u548c\u76d1\u63a7\u7cfb\u7edf\u4e2d\u7684\u5b89\u5168\u4e8b\u4ef6\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528centos\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6\uff0c\u5e76\u63d0\u4f9b\u76f8\u5173\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55<\/p>\n<p>\u5728CentOS\u7cfb\u7edf\u4e0a\uff0c\u65e5\u5fd7\u8bb0\u5f55\u662f\u901a\u8fc7rsyslog\u670d\u52a1\u5b9e\u73b0\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91rsyslog\u7684\u914d\u7f6e\u6587\u4ef6\u6765\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\u3002\u6253\u5f00\u7ec8\u7aef\uff0c\u4f7f\u7528root\u6743\u9650\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre>vim \/etc\/rsyslog.conf<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u627e\u5230\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre>#module(load=\"imudp\")\n#input(type=\"imudp\" port=\"514\")\n#module(load=\"imtcp\")\n#input(type=\"imtcp\" port=\"514\")<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5c06\u5176\u4fee\u6539\u4e3a\uff1a<\/p>\n<pre>module(load=\"imudp\")\ninput(type=\"imudp\" port=\"514\")\nmodule(load=\"imtcp\")\ninput(type=\"imtcp\" port=\"514\")<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7136\u540e\u627e\u5230\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre>*.info;mail.none;authpriv.none;cron.none \/var\/log\/messages<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u5176\u540e\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre>authpriv.* \/var\/log\/secure<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u91cd\u542frsyslog\u670d\u52a1\u4ee5\u4f7f\u914d\u7f6e\u751f\u6548\u3002\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre>systemctl restart rsyslog<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e8c\u3001\u65e5\u5fd7\u5206\u6790\u5de5\u5177<\/p>\n<p>CentOS\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5f3a\u5927\u7684\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u5206\u6790\u548c\u76d1\u63a7\u7cfb\u7edf\u4e2d\u7684\u5b89\u5168\u4e8b\u4ef6\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u7528\u7684\u5de5\u5177\uff1a<\/p>\n<ol>\n<li>grep<br \/>grep\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6587\u672c\u641c\u7d22\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u8fc7\u6ee4\u548c\u641c\u7d22\u5173\u952e\u5b57\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528grep\u547d\u4ee4\u6765\u83b7\u53d6\u7279\u5b9a\u7684\u65e5\u5fd7\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u8981\u67e5\u627e\u5305\u542b\u5173\u952e\u5b57&#8221;failed&#8221;\u7684\u767b\u5f55\u5c1d\u8bd5\u8bb0\u5f55\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/li>\n<\/ol>\n<pre>grep \"failed\" \/var\/log\/secure<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>tail<br \/>tail\u547d\u4ee4\u7528\u4e8e\u663e\u793a\u6587\u4ef6\u7684\u672b\u5c3e\u51e0\u884c\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528tail\u547d\u4ee4\u6765\u5b9e\u65f6\u76d1\u63a7\u65e5\u5fd7\u6587\u4ef6\u7684\u53d8\u5316\u3002\u4f8b\u5982\uff0c\u8981\u5b9e\u65f6\u76d1\u63a7\/var\/log\/messages\u6587\u4ef6\u7684\u53d8\u5316\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/li>\n<\/ol>\n<pre>tail -f \/var\/log\/messages<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>awk<br \/>awk\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6587\u672c\u5904\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u63d0\u53d6\u548c\u5904\u7406\u6587\u672c\u4e2d\u7684\u7279\u5b9a\u4fe1\u606f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528awk\u547d\u4ee4\u6765\u5bf9\u65e5\u5fd7\u6587\u4ef6\u8fdb\u884c\u66f4\u590d\u6742\u7684\u5206\u6790\u3002\u4f8b\u5982\uff0c\u8981\u63d0\u53d6\u767b\u5f55\u5931\u8d25\u7684IP\u5730\u5740\u548c\u6b21\u6570\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/li>\n<\/ol>\n<pre>awk '\/Failed password for\/ {print $11}' \/var\/log\/secure | sort | uniq -c | sort -nr<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee5\u4e0a\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u5de5\u5177\u6765\u5206\u6790\u65e5\u5fd7\u3002<\/p>\n<p>\u4e09\u3001\u5b9e\u8df5\u793a\u4f8b<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5b9e\u8df5\u793a\u4f8b\uff0c\u5047\u8bbe\u6211\u4eec\u8981\u76d1\u63a7\u7cfb\u7edf\u4e2d\u767b\u5f55\u5931\u8d25\u7684IP\u5730\u5740\uff0c\u5e76\u5c06\u7ed3\u679c\u4fdd\u5b58\u5230\u4e00\u4e2a\u6587\u4ef6\u4e2d\u3002<\/p>\n<ol>\n<li>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u811a\u672c\u6587\u4ef6\uff0c\u4f7f\u7528root\u6743\u9650\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/li>\n<\/ol>\n<pre>vim \/root\/login_failed.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5728\u811a\u672c\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/li>\n<\/ol>\n<pre>#!\/bin\/bash\n\nLOG_FILE=\"\/var\/log\/secure\"\nOUTPUT_FILE=\"\/root\/login_failed.txt\"\n\ngrep \"Failed password for\" $LOG_FILE | awk '{print $11}' | sort | uniq -c | sort -nr &amp;gt; $OUTPUT_FILE<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/li>\n<li>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u7ed9\u811a\u672c\u6587\u4ef6\u6dfb\u52a0\u6267\u884c\u6743\u9650\uff1a<\/li>\n<\/ol>\n<pre>chmod +x \/root\/login_failed.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u8fd0\u884c\u811a\u672c\uff1a<\/li>\n<\/ol>\n<pre>.\/root\/login_failed.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u811a\u672c\u5c06\u5728\/var\/log\/secure\u4e2d\u641c\u7d22\u767b\u5f55\u5931\u8d25\u7684\u8bb0\u5f55\uff0c\u5e76\u5c06\u76f8\u5e94\u7684IP\u5730\u5740\u53ca\u6b21\u6570\u4fdd\u5b58\u5230\/root\/login_failed.txt\u6587\u4ef6\u4e2d\u3002<\/p>\n<p>\u603b\u7ed3\uff1a<br \/>\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528centos\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6\uff0c\u5e76\u63d0\u4f9b\u4e86\u76f8\u5173\u7684\u4ee3\u7801\u793a\u4f8b\u3002\u901a\u8fc7\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\u548c\u4f7f\u7528\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff0c\u6211\u4eec\u53ef\u4ee5\u53ca\u65f6\u53d1\u73b0\u548c\u5e94\u5bf9\u7cfb\u7edf\u4e2d\u7684\u5b89\u5168\u4e8b\u4ef6\u3002\u5e0c\u671b\u8fd9\u4e9b\u4fe1\u606f\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528CentOS\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528centos\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6 \u5f15\u8a00\uff1a\u5728\u5f53\u4eca\u7684\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u5b89\u5168\u4e8b\u4ef6\u548c\u653b\u51fb\u884c\u4e3a\u65e5\u76ca\u589e\u591a\u3002\u4e3a\u4e86\u4fdd\u62a4\u7cfb\u7edf\u7684\u5b89\u5168\uff0c\u53ca\u65f6\u53d1\u73b0\u5e76\u5e94\u5bf9\u5b89\u5168\u5a01\u80c1\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002CentOS\u7cfb\u7edf\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5206\u6790\u548c\u76d1\u63a7\u7cfb\u7edf\u4e2d\u7684\u5b89\u5168\u4e8b\u4ef6\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528centos\u7cfb\u7edf\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u6765\u5206\u6790\u5b89\u5168\u4e8b\u4ef6\uff0c\u5e76\u63d0\u4f9b\u76f8\u5173\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55 \u5728CentOS\u7cfb\u7edf\u4e0a\uff0c\u65e5\u5fd7\u8bb0\u5f55\u662f\u901a\u8fc7rsyslog\u670d\u52a1\u5b9e\u73b0\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91rsyslog\u7684\u914d\u7f6e\u6587\u4ef6\u6765\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\u3002\u6253\u5f00\u7ec8\u7aef\uff0c\u4f7f\u7528root\u6743\u9650\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a vim \/etc\/rsyslog.conf \u767b\u5f55\u540e\u590d\u5236 \u627e\u5230\u4ee5\u4e0b\u884c\uff1a #module(load=&#8221;imudp&#8221;) #input(type=&#8221;imudp&#8221; port=&#8221;514&#8243;) #module(load=&#8221;imtcp&#8221;) #input(type=&#8221;imtcp&#8221; port=&#8221;514&#8243;) \u767b\u5f55\u540e\u590d\u5236 \u5c06\u5176\u4fee\u6539\u4e3a\uff1a module(load=&#8221;imudp&#8221;) input(type=&#8221;imudp&#8221; port=&#8221;514&#8243;) module(load=&#8221;imtcp&#8221;) input(type=&#8221;imtcp&#8221; port=&#8221;514&#8243;) \u767b\u5f55\u540e\u590d\u5236 \u7136\u540e\u627e\u5230\u4ee5\u4e0b\u884c\uff1a *.info;mail.none;authpriv.none;cron.none \/var\/log\/messages \u767b\u5f55\u540e\u590d\u5236 \u5728\u5176\u540e\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a authpriv.* \/var\/log\/secure \u767b\u5f55\u540e\u590d\u5236 \u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002 \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u91cd\u542frsyslog\u670d\u52a1\u4ee5\u4f7f\u914d\u7f6e\u751f\u6548\u3002\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a systemctl restart rsyslog \u767b\u5f55\u540e\u590d\u5236 \u4e8c\u3001\u65e5\u5fd7\u5206\u6790\u5de5\u5177 CentOS\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5f3a\u5927\u7684\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u5206\u6790\u548c\u76d1\u63a7\u7cfb\u7edf\u4e2d\u7684\u5b89\u5168\u4e8b\u4ef6\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u7528\u7684\u5de5\u5177\uff1a grepgrep\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6587\u672c\u641c\u7d22\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u8fc7\u6ee4\u548c\u641c\u7d22\u5173\u952e\u5b57\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528grep\u547d\u4ee4\u6765\u83b7\u53d6\u7279\u5b9a\u7684\u65e5\u5fd7\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u8981\u67e5\u627e\u5305\u542b\u5173\u952e\u5b57&#8221;failed&#8221;\u7684\u767b\u5f55\u5c1d\u8bd5\u8bb0\u5f55\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a grep &#8220;failed&#8221; \/var\/log\/secure \u767b\u5f55\u540e\u590d\u5236 tailtail\u547d\u4ee4\u7528\u4e8e\u663e\u793a\u6587\u4ef6\u7684\u672b\u5c3e\u51e0\u884c\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528tail\u547d\u4ee4\u6765\u5b9e\u65f6\u76d1\u63a7\u65e5\u5fd7\u6587\u4ef6\u7684\u53d8\u5316\u3002\u4f8b\u5982\uff0c\u8981\u5b9e\u65f6\u76d1\u63a7\/var\/log\/messages\u6587\u4ef6\u7684\u53d8\u5316\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a tail -f \/var\/log\/messages \u767b\u5f55\u540e\u590d\u5236 awkawk\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6587\u672c\u5904\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u63d0\u53d6\u548c\u5904\u7406\u6587\u672c\u4e2d\u7684\u7279\u5b9a\u4fe1\u606f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528awk\u547d\u4ee4\u6765\u5bf9\u65e5\u5fd7\u6587\u4ef6\u8fdb\u884c\u66f4\u590d\u6742\u7684\u5206\u6790\u3002\u4f8b\u5982\uff0c\u8981\u63d0\u53d6\u767b\u5f55\u5931\u8d25\u7684IP\u5730\u5740\u548c\u6b21\u6570\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a awk &#8216;\/Failed password for\/ {print 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