Snort是一款轻量级的免费入侵检测系统,作为免费系统其功能性肯定不能与专业的入侵检测产品相比,但是作为受到用户广泛追捧的Snort必然有其优势所在。今天我们就以测试Snort的实例,简单接触一下Snort这款入侵检测系统。
测试Snort环境RH Enterprise AS3、4
一、安装Snort: 1)先安装pcre目录里的pcre-7.0.tar.gz 方法: tar zxvf pcre-7.0.tar.gz cd pcre-7.0 ./configure make make install 2)安装snort-2.4.2.tar.gz 方法同上 3)解压Snort规则包snortrules-pr-2.4.tar.tar 方法tar zxvf snortrules-pr-2.4.tar.tar 4)安装Snort插件snortsam-src-2.50.tar.tar 方法同1)
以上安装好后执行: mkdir /etc/snort mkdir /var/log/snort cp /chameleon/Snort/snort-2.4.2/etc/snort.conf /etc/snort cp /chameleon/Snort/snort-2.4.2/etc/*.map /etc/snort cp /chameleon/Snort/snort-2.4.2/etc/*.config /etc/snort mkdir /chameleon/Snort/snort-2.4.2/rules/ cp /chameleon/Snort/snort-2.4.2/rules/*.rules /etc/snort 以上根绝个人安装目录不同可作适当修改
二、修改配置文件: vi /etc/snort/snort.conf 修改其中规则路径: var RULE_PATH /etc/snort
三、启动snort: 后台启动: snort -c /etc/snort/snort.conf -D 我们可以用ps -aux|grep snort来看一下Snort是否成功启动了 启动成功
四、测试snort: 在运行Snort的主机上执行tail -f /var/log/snort/alert命令实时查看警告日志: 然后我在另一台机器上用hping2工具,也可以直接用ping命令来测试: hping2 -x 运行snort主机的ip 或 ping 运行snort主机的ip 注意看了,他的日志在不断记录着,当我停止后他就没再记录了 这是会看到alert日志不听的告警,如下: [**] [1:368:6] ICMP PING BSDtype [**] [Classification: Misc activity] [Priority: 3] 03/06-10:28:39.272055 218.206.116.41 -> 192.168.1.7 ICMP TTL:55 TOS:0x0 ID:8 IpLen:20 DgmLen:84 DF Type:8 Code:0 ID:32882 Seq:8 ECHO [Xref => http://www.whitehats.com/info/IDS152] [**] [1:366:7] ICMP PING *NIX [**] [Classification: Misc activity] [Priority: 3] 03/06-10:28:39.272055 218.206.116.41 -> 192.168.1.7 ICMP TTL:55 TOS:0x0 ID:8 IpLen:20 DgmLen:84 DF Type:8 Code:0 ID:32882 Seq:8 ECHO [**] [1:384:5] ICMP PING [**] [Classification: Misc activity] [Priority: 3] 03/06-10:28:39.272055 218.206.116.41 -> 192.168.1.7 ICMP TTL:55 TOS:0x0 ID:8 IpLen:20 DgmLen:84 DF Type:8 Code:0 ID:32882 Seq:8 ECHO [**] [1:368:6] ICMP PING BSDtype [**] [Classification: Misc activity] [Priority: 3] 03/06-10:28:40.281751 218.206.116.41 -> 192.168.1.7 ICMP TTL:55 TOS:0x0 ID:9 IpLen:20 DgmLen:84 DF Type:8 Code:0 ID:32882 Seq:9 ECHO [Xref => http://www.whitehats.com/info/IDS152] [**] [1:366:7] ICMP PING *NIX [**] [Classification: Misc activity] [Priority: 3] 03/06-10:28:40.281751 218.206.116.41 -> 192.168.1.7 ICMP TTL:55 TOS:0x0 ID:9 IpLen:20 DgmLen:84 DF Type:8 Code:0 ID:32882 Seq:9 ECHO [**] [1:384:5] ICMP PING [**] [Classification: Misc activity] [Priority: 3] 03/06-10:28:40.281751 218.206.116.41 -> 192.168.1.7 ICMP TTL:55 TOS:0x0 ID:9 IpLen:20 DgmLen:84 DF Type:8 Code:0 ID:32882 Seq:9 ECHO
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