{"id":15955,"date":"2024-11-18T09:26:10","date_gmt":"2024-11-18T01:26:10","guid":{"rendered":"https:\/\/fwq.ai\/blog\/15955\/"},"modified":"2024-11-18T09:26:10","modified_gmt":"2024-11-18T01:26:10","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e7%bd%91%e7%bb%9c%e5%85%a5%e4%be%b5%e6%a3%80%e6%b5%8b%e7%b3%bb%e7%bb%9f%ef%bc%88nids%ef%bc%89%e4%bf%9d%e6%8a%a4centos%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15955\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08NIDS\uff09\u4fdd\u62a4CentOS\u670d\u52a1\u5668"},"content":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08nids\uff09\u4fdd\u62a4centos\u670d\u52a1\u5668<\/p>\n<p>\u5f15\u8a00:<br \/>\u5728\u73b0\u4ee3\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u670d\u52a1\u5668\u5b89\u5168\u6027\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u653b\u51fb\u8005\u4f7f\u7528\u5404\u79cd\u624b\u6bb5\u5c1d\u8bd5\u5165\u4fb5\u6211\u4eec\u7684\u670d\u52a1\u5668\uff0c\u5e76\u7a83\u53d6\u654f\u611f\u6570\u636e\u6216\u8005\u7834\u574f\u7cfb\u7edf\u3002\u4e3a\u4e86\u786e\u4fdd\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08NIDS\uff09\u8fdb\u884c\u5b9e\u65f6\u76d1\u63a7\u548c\u68c0\u6d4b\u6f5c\u5728\u7684\u653b\u51fb\u3002<\/p>\n<p>\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728CentOS\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528NIDS\u6765\u4fdd\u62a4\u670d\u52a1\u5668\u3002<\/p>\n<p>\u6b65\u9aa41\uff1a\u5b89\u88c5\u548c\u914d\u7f6eSNORT<br \/>SNORT\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\u5e76\u68c0\u6d4b\u53ef\u80fd\u7684\u653b\u51fb\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5SNORT\u3002<\/p>\n<ol>\n<li>\u6253\u5f00\u7ec8\u7aef\u5e76\u4f7f\u7528root\u6743\u9650\u767b\u5f55\u670d\u52a1\u5668\u3002<\/li>\n<li>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5SNORT\uff1a<\/li>\n<\/ol>\n<pre>yum install epel-release\nyum install snort<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5b89\u88c5\u7ed3\u675f\u540e\uff0c\u6211\u4eec\u9700\u8981\u914d\u7f6eSNORT\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u914d\u7f6e\u6587\u4ef6\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u5e76\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u914d\u7f6e\u6587\u4ef6\uff1a<\/li>\n<\/ol>\n<pre>cp \/etc\/snort\/snort.conf \/etc\/snort\/snort.conf.backup\nvim \/etc\/snort\/snort.conf<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5bf9SNORT\u8fdb\u884c\u81ea\u5b9a\u4e49\u914d\u7f6e\u3002\u53e6\u5916\uff0c\u786e\u4fdduncomment\u4ee5\u4e0b\u51e0\u884c\uff0c\u4ee5\u542f\u7528\u76f8\u5e94\u7684\u529f\u80fd\uff1a<\/li>\n<\/ol>\n<pre>include $RULE_PATH\/local.rules\ninclude $RULE_PATH\/snort.rules\ninclude $RULE_PATH\/community.rules<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4fdd\u5b58\u5e76\u5173\u95ed\u914d\u7f6e\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<p>\u6b65\u9aa42\uff1a\u914d\u7f6eNIDS\u89c4\u5219<br \/>\u5728SNORT\u4e2d\uff0c\u89c4\u5219\u7528\u4e8e\u5b9a\u4e49\u6211\u4eec\u5e0c\u671b\u68c0\u6d4b\u7684\u653b\u51fb\u7c7b\u578b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5df2\u6709\u7684\u89c4\u5219\u96c6\u6216\u8005\u521b\u5efa\u81ea\u5b9a\u4e49\u89c4\u5219\u3002<\/p>\n<ol>\n<li>\u6253\u5f00\u7ec8\u7aef\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u5165SNORT\u89c4\u5219\u76ee\u5f55\uff1a<\/li>\n<\/ol>\n<pre>cd \/etc\/snort\/rules\/<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4e0b\u8f7d\u6700\u65b0\u7684\u89c4\u5219\u96c6\uff1a<\/li>\n<\/ol>\n<pre>wget https:\/\/www.snort.org\/downloads\/community\/community-rules.tar.gz\ntar -xvf community-rules.tar.gz<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4e0b\u8f7d\u548c\u63d0\u53d6\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728rules\u76ee\u5f55\u4e2d\u627e\u5230\u89c4\u5219\u6587\u4ef6\u3002\u8fd9\u4e9b\u89c4\u5219\u6587\u4ef6\u5177\u6709\u6269\u5c55\u540d\u4e3a.rules\u3002<\/li>\n<li>\u5982\u679c\u6211\u4eec\u60f3\u8981\u6dfb\u52a0\u81ea\u5b9a\u4e49\u89c4\u5219\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u89c4\u5219\u6587\u4ef6\uff0c\u5e76\u5728\u5176\u4e2d\u6dfb\u52a0\u89c4\u5219\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u540d\u4e3acustom.rules\u7684\u89c4\u5219\u6587\u4ef6\uff1a<\/li>\n<\/ol>\n<pre>vim custom.rules<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5728\u89c4\u5219\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6dfb\u52a0\u81ea\u5b9a\u4e49\u89c4\u5219\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n<pre>alert tcp any any -&amp;gt; any any (msg:\"Possible SSH brute force attack\"; \n                         flow:from_client,established; content:\"SSH-\"; \n                         threshold:type limit, track by_src, count 5, \n                         seconds 60; sid:10001; rev:1;)<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4fdd\u5b58\u5e76\u5173\u95ed\u89c4\u5219\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<p>\u6b65\u9aa43\uff1a\u542f\u52a8SNORT\u5e76\u76d1\u63a7\u6d41\u91cf<br \/>\u914d\u7f6eSNORT\u548c\u89c4\u5219\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u542f\u52a8SNORT\u5e76\u5f00\u59cb\u76d1\u63a7\u6d41\u91cf\u3002<\/p>\n<ol>\n<li>\u6253\u5f00\u7ec8\u7aef\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u542f\u52a8SNORT\uff1a<\/li>\n<\/ol>\n<pre>snort -A console -c \/etc\/snort\/snort.conf -i eth0<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u4e2d\uff0c-A console\u6307\u5b9a\u5c06\u8b66\u62a5\u6d88\u606f\u8f93\u51fa\u5230\u63a7\u5236\u53f0\uff0c-c \/etc\/snort\/snort.conf\u6307\u5b9a\u4f7f\u7528\u6211\u4eec\u4e4b\u524d\u914d\u7f6e\u7684SNORT\u914d\u7f6e\u6587\u4ef6\uff0c-i eth0\u6307\u5b9a\u8981\u76d1\u63a7\u7684\u7f51\u7edc\u63a5\u53e3\u3002<\/p>\n<ol>\n<li>SNORT\u5c06\u5f00\u59cb\u76d1\u63a7\u6d41\u91cf\u5e76\u68c0\u6d4b\u6f5c\u5728\u7684\u653b\u51fb\u3002\u5982\u679c\u6709\u4efb\u4f55\u53ef\u7591\u7684\u6d3b\u52a8\uff0c\u5b83\u5c06\u751f\u6210\u8b66\u62a5\u6d88\u606f\u5e76\u5c06\u5176\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u3002<\/li>\n<\/ol>\n<p>\u6b65\u9aa44\uff1a\u8bbe\u7f6eSNORT\u8b66\u62a5\u901a\u77e5<br \/>\u4e3a\u4e86\u80fd\u591f\u53ca\u65f6\u83b7\u53d6\u8b66\u62a5\u6d88\u606f\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u90ae\u4ef6\u901a\u77e5\u529f\u80fd\u6765\u5c06\u8b66\u62a5\u6d88\u606f\u53d1\u9001\u5230\u6211\u4eec\u7684\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u3002<\/p>\n<ol>\n<li>\u6253\u5f00\u7ec8\u7aef\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\u90ae\u4ef6\u901a\u77e5\u63d2\u4ef6\uff1a<\/li>\n<\/ol>\n<pre>yum install barnyard2\nyum install sendmail<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u914d\u7f6e\u6587\u4ef6\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u590d\u5236\u793a\u4f8b\u914d\u7f6e\u6587\u4ef6\u5e76\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u914d\u7f6e\u6587\u4ef6\uff1a<\/li>\n<\/ol>\n<pre>cp \/etc\/barnyard2\/barnyard2.conf \/etc\/barnyard2\/barnyard2.conf.backup\nvim \/etc\/barnyard2\/barnyard2.conf<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u627e\u5230\u4ee5\u4e0b\u51e0\u884c\u5e76\u53d6\u6d88\u6ce8\u91ca\uff1a<\/li>\n<\/ol>\n<pre>output alert_syslog_full\noutput database: log, mysql, user=snort password=snort dbname=snort host=localhost\noutput alert_fast: snort.alert\n\nconfig reference_file: reference.config\nconfig classification_file:classification.config\nconfig gen_file: gen-msg.map\nconfig sid_file: sid-msg.map<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4fee\u6539\u4ee5\u4e0b\u51e0\u884c\uff0c\u6839\u636e\u6211\u4eec\u7684SMTP\u670d\u52a1\u5668\u548c\u90ae\u4ef6\u8bbe\u7f6e\u8fdb\u884c\u9002\u5f53\u4fee\u6539\uff1a<\/li>\n<\/ol>\n<pre>output alert_full: alert.full\noutput log_unified2: filename unified2.log, limit 128\noutput smtp: email@example.com<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4fdd\u5b58\u5e76\u5173\u95ed\u914d\u7f6e\u6587\u4ef6\u3002<\/li>\n<li>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u542f\u52a8barnyard2\uff1a<\/li>\n<\/ol>\n<pre>barnyard2 -c \/etc\/barnyard2\/barnyard2.conf -d \/var\/log\/snort\/<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u7a0d\u540e\uff0c\u5982\u679cSNORT\u68c0\u6d4b\u5230\u53ef\u7591\u6d3b\u52a8\uff0c\u5b83\u5c06\u751f\u6210\u8b66\u62a5\u6d88\u606f\u5e76\u5c06\u5176\u53d1\u9001\u5230\u6211\u4eec\u6307\u5b9a\u7684\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u3002<\/li>\n<\/ol>\n<p>\u7ed3\u8bba:<br \/>\u901a\u8fc7\u90e8\u7f72\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08NIDS\uff09\u6765\u4fdd\u62a4\u6211\u4eec\u7684CentOS\u670d\u52a1\u5668\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528SNORT\u6765\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\u5e76\u68c0\u6d4b\u6f5c\u5728\u7684\u653b\u51fb\u3002\u901a\u8fc7\u9075\u5faa\u672c\u6587\u4e2d\u7684\u6b65\u9aa4\uff0c\u6211\u4eec\u53ef\u4ee5\u914d\u7f6eSNORT\u5e76\u8bbe\u7f6e\u89c4\u5219\u6765\u76d1\u63a7\u548c\u4fdd\u62a4\u6211\u4eec\u7684\u670d\u52a1\u5668\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u90ae\u4ef6\u901a\u77e5\u529f\u80fd\u53ca\u65f6\u83b7\u53d6\u8b66\u62a5\u6d88\u606f\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08NIDS\uff09\u4fdd\u62a4CentOS\u670d\u52a1\u5668\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\u7528\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08nids\uff09\u4fdd\u62a4centos\u670d\u52a1\u5668 \u5f15\u8a00:\u5728\u73b0\u4ee3\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u670d\u52a1\u5668\u5b89\u5168\u6027\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u653b\u51fb\u8005\u4f7f\u7528\u5404\u79cd\u624b\u6bb5\u5c1d\u8bd5\u5165\u4fb5\u6211\u4eec\u7684\u670d\u52a1\u5668\uff0c\u5e76\u7a83\u53d6\u654f\u611f\u6570\u636e\u6216\u8005\u7834\u574f\u7cfb\u7edf\u3002\u4e3a\u4e86\u786e\u4fdd\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08NIDS\uff09\u8fdb\u884c\u5b9e\u65f6\u76d1\u63a7\u548c\u68c0\u6d4b\u6f5c\u5728\u7684\u653b\u51fb\u3002 \u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728CentOS\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u548c\u4f7f\u7528NIDS\u6765\u4fdd\u62a4\u670d\u52a1\u5668\u3002 \u6b65\u9aa41\uff1a\u5b89\u88c5\u548c\u914d\u7f6eSNORTSNORT\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\u5e76\u68c0\u6d4b\u53ef\u80fd\u7684\u653b\u51fb\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5SNORT\u3002 \u6253\u5f00\u7ec8\u7aef\u5e76\u4f7f\u7528root\u6743\u9650\u767b\u5f55\u670d\u52a1\u5668\u3002 \u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5SNORT\uff1a yum install epel-release yum install snort \u767b\u5f55\u540e\u590d\u5236 \u5b89\u88c5\u7ed3\u675f\u540e\uff0c\u6211\u4eec\u9700\u8981\u914d\u7f6eSNORT\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u914d\u7f6e\u6587\u4ef6\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u5e76\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u914d\u7f6e\u6587\u4ef6\uff1a cp \/etc\/snort\/snort.conf \/etc\/snort\/snort.conf.backup vim \/etc\/snort\/snort.conf \u767b\u5f55\u540e\u590d\u5236 \u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5bf9SNORT\u8fdb\u884c\u81ea\u5b9a\u4e49\u914d\u7f6e\u3002\u53e6\u5916\uff0c\u786e\u4fdduncomment\u4ee5\u4e0b\u51e0\u884c\uff0c\u4ee5\u542f\u7528\u76f8\u5e94\u7684\u529f\u80fd\uff1a include $RULE_PATH\/local.rules include $RULE_PATH\/snort.rules include $RULE_PATH\/community.rules \u767b\u5f55\u540e\u590d\u5236 \u4fdd\u5b58\u5e76\u5173\u95ed\u914d\u7f6e\u6587\u4ef6\u3002 \u6b65\u9aa42\uff1a\u914d\u7f6eNIDS\u89c4\u5219\u5728SNORT\u4e2d\uff0c\u89c4\u5219\u7528\u4e8e\u5b9a\u4e49\u6211\u4eec\u5e0c\u671b\u68c0\u6d4b\u7684\u653b\u51fb\u7c7b\u578b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5df2\u6709\u7684\u89c4\u5219\u96c6\u6216\u8005\u521b\u5efa\u81ea\u5b9a\u4e49\u89c4\u5219\u3002 \u6253\u5f00\u7ec8\u7aef\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u5165SNORT\u89c4\u5219\u76ee\u5f55\uff1a cd \/etc\/snort\/rules\/ \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4e0b\u8f7d\u6700\u65b0\u7684\u89c4\u5219\u96c6\uff1a wget https:\/\/www.snort.org\/downloads\/community\/community-rules.tar.gz tar -xvf community-rules.tar.gz \u767b\u5f55\u540e\u590d\u5236 \u4e0b\u8f7d\u548c\u63d0\u53d6\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728rules\u76ee\u5f55\u4e2d\u627e\u5230\u89c4\u5219\u6587\u4ef6\u3002\u8fd9\u4e9b\u89c4\u5219\u6587\u4ef6\u5177\u6709\u6269\u5c55\u540d\u4e3a.rules\u3002 \u5982\u679c\u6211\u4eec\u60f3\u8981\u6dfb\u52a0\u81ea\u5b9a\u4e49\u89c4\u5219\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u89c4\u5219\u6587\u4ef6\uff0c\u5e76\u5728\u5176\u4e2d\u6dfb\u52a0\u89c4\u5219\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u540d\u4e3acustom.rules\u7684\u89c4\u5219\u6587\u4ef6\uff1a vim custom.rules \u767b\u5f55\u540e\u590d\u5236 \u5728\u89c4\u5219\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6dfb\u52a0\u81ea\u5b9a\u4e49\u89c4\u5219\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a alert tcp any any -&amp;gt; any any (msg:&#8221;Possible 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