使用 Suricata 进行入侵监控（一个简单小例子访问百度）

　　前期博客

基于CentOS6.5下Suricata（一款高性能的网络IDS、IPS和网络安全监控引擎）的搭建（图文详解）（博主推荐）

1、自己编写一条规则，规则书写参考snort规则（suricata完全兼容snort规则）

   例如以百度网站为例：

   [root@suricata rules]# cat test.rules 

[root@suricata rules]# pwd
/etc/suricata/rules
[root@suricata rules]# ls
app-layer-events.rules   emerging-activex.rules          emerging-icmp.rules            emerging-scada.rules        emerging-web_server.rules         smtp-events.rules
botcc.portgrouped.rules  emerging-attack_response.rules  emerging-imap.rules            emerging-scan.rules         emerging-web_specific_apps.rules  stream-events.rules
botcc.rules              emerging-chat.rules             emerging-inappropriate.rules   emerging-shellcode.rules    emerging-worm.rules               suricata-1.2-prior-open.yaml
BSD-License.txt          emerging.conf                   emerging-info.rules            emerging-smtp.rules         gen-msg.map                       suricata-1.3-enhanced-open.txt
ciarmy.rules             emerging-current_events.rules   emerging-malware.rules         emerging-snmp.rules         gpl-2.0.txt                       suricata-1.3-etpro-etnamed.yaml
classification.config    emerging-deleted.rules          emerging-misc.rules            emerging-sql.rules          http-events.rules                 suricata-1.3-open.yaml
compromised-ips.txt      emerging-dns.rules              emerging-mobile_malware.rules  emerging-telnet.rules       LICENSE                           tor.rules
compromised.rules        emerging-dos.rules              emerging-netbios.rules         emerging-tftp.rules         modbus-events.rules               unicode.map
decoder-events.rules     emerging-exploit.rules          emerging-p2p.rules             emerging-trojan.rules       rbn-malvertisers.rules
dns-events.rules         emerging-ftp.rules              emerging-policy.rules          emerging-user_agents.rules  rbn.rules
drop.rules               emerging-games.rules            emerging-pop3.rules            emerging-voip.rules         reference.config
dshield.rules            emerging-icmp_info.rules        emerging-rpc.rules             emerging-web_client.rules   sid-msg.map
[root@suricata rules]# vim test-baidu.rules

 

[root@suricata rules]# cat test-baidu.rules
alert http any any -> any any (msg:"hit baidu.com...";content:"baidu"; reference:url, www.baidu.com;)

   将文件命名为test.rules,存放在目录/etc/suricata/rules下（直接存放在该目录下rules里面）。

 

 

 

　　同时，还要把这个自定义配置文件（如我这里已经改名了，为local.rules）放到配置文件里，才可以生效。

 

 

 

2、启动suricata 

[root@suricata ~]# sudo /usr/local/bin/suricata -c /etc/suricata/suricata.yaml    -i eth0   -s /etc/suricata/rules/test.rules

 

 

 

 

 

3、打开虚拟机中火狐浏览器，访问www.baidu.com

 

 

 

 

   　　此时，查看log文件/var/log/suricata目录下

[root@suricata ~]# cd /var/log/suricata
[root@suricata suricata]# pwd
/var/log/suricata
[root@suricata suricata]# ls
certs  eve.json  fast.log  files  stats.log  suricata.log
[root@suricata suricata]# 

   fast.log显示数据包匹配的条数

[root@suricata suricata]# cat fast.log
//-::51.526950  [**] [::] SURICATA DNS malformed request data [**] [Classification: (null)] [Priority: ] {UDP} 192.168.80.2: -> 192.168.80.86:
//-::00.603193  [**] [::] SURICATA DNS malformed request data [**] [Classification: (null)] [Priority: ] {UDP} 192.168.80.2: -> 192.168.80.86:
//-::00.641131  [**] [::] SURICATA DNS malformed request data [**] [Classification: (null)] [Priority: ] {UDP} 192.168.80.2: -> 192.168.80.86:
//-::00.860060  [**] [::] SURICATA DNS malformed request data [**] [Classification: (null)] [Priority: ] {UDP} 192.168.80.2: -> 192.168.80.86:
//-::56.624866  [**] [::] SURICATA DNS malformed request data [**] [Classification: (null)] [Priority: ] {UDP} 192.168.80.2: -> 192.168.80.86:
//-::00.111989  [**] [::] SURICATA DNS malformed request data [**] [Classification: (null)] [Priority: ] {UDP} 192.168.80.2: -> 192.168.80.86:

　　192.168.80.2是我192.168.80.86（即suricata主机的网关）

 

 

 

 

[root@suricata suricata]# ls
certs  eve.json  fast.log  files  stats.log  suricata.log
[root@suricata suricata]# cat suricata.log
// -- :: - <Notice> - This is Suricata version 3.1 RELEASE
// -- :: - <Warning> - [ERRCODE: SC_ERR_NO_RULES()] - No rule files match the pattern /etc/suricata/rules/tls-events.rules
// -- :: - <Warning> - [ERRCODE: SC_ERR_NO_RULES()] - No rule files match the pattern /etc/suricata/rules/test.rules
// -- :: - <Error> - [ERRCODE: SC_ERR_NO_RULES()] - No rules loaded from /etc/suricata/rules/test.rules
// -- :: - <Notice> - all  packet processing threads,  management threads initialized, engine started.
// -- :: - <Notice> - Signal Received.  Stopping engine.
// -- :: - <Notice> - Stats for 'eth0':  pkts: , drop:  (0.00%), invalid chksum:
[root@suricata suricata]# pwd
/var/log/suricata
[root@suricata suricata]# 

 　　

　　其生产的报警日志文件，就是fast.log。