利用路由器的流量导出功能部署IPS的配置方法
在企业级路由器的很多并不常用的功能,其实用处是非常大的,常常被人忽略掉,比如利用流量到处功能来部署IPS就是一个很不错的方法。下面就采用三个路由器和以给IDS组成以给三叉式的链式网络,给大家讲解配置IPS的方法,下面会列出拓扑图、基本配置、IP Traffic Export简单配置和IPS配置的具体方法步骤。
1.拓扑图:
参考:http://blog.sina.com.cn/s/blog_52ddfea30100haof.html
过google搜索,https://supportforums.cisco.com/thread/2033247 sensor接口的MAC地址,可以用service帐号登录IPS,ifconfig -a获得,如下图所示:
2.基本配置:
- R1:
- interface FastEthernet0/0
- ip address 10.1.13.1 255.255.255.0
- no shut
- ip route 0.0.0.0 0.0.0.0 10.1.13.3
- R2:
- interface FastEthernet0/0
- ip address 10.1.23.2 255.255.255.0
- no shut
- ip route 0.0.0.0 0.0.0.0 10.1.23.3
- R3:
- interface FastEthernet0/0
- ip address 10.1.13.3 255.255.255.0
- no shut
- interface FastEthernet0/1
- ip address 10.1.23.3 255.255.255.0
- no shut
3.路由器IP Traffic Export简单配置:
①创建流量导出配置文件:
ip traffic-export profile test
interface FastEthernet1/0
mac-address 000c.2920.d8d5 <这是IDS的MAC,一定是直连或者同一VLAN>
-------mac为接收流量的IPS的sensor接口的mac,可以通过service帐号登录IPS运行ifconfig -a命令获得。
②在需要导出流量的接口应用配置文件:
interface FastEthernet0/0
ip traffic-export apply test
4.IPS的配置:
A.确认g0/1接口已经enabled
B.将g0/1关联到virtual sensor:
C.大量的ping可以在IPS上看到事件:
- R1#ping 10.1.23.2 repeat 100
- Type escape sequence to abort.
- Sending 100, 100-byte ICMP Echos to 10.1.23.2, timeout is 2 seconds:
- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- Success rate is 100 percent (100/100), round-trip min/avg/max = 4/47/172 ms
- R1# http://www.luyouqiwang.com/14313/
- vIdsAlert: eventId=1185793501059155079 vendor=Cisco severity=informational
- originator:
- hostId: ips4215
- appName: sensorApp
- appInstanceId: 340
- time: 2012年8月19日 上午09时57分50秒 offset=0 timeZone=UTC
- signature: description=ICMP Echo Request id=2004 version=S1
- subsigId: 0
- interfaceGroup:
- vlan: 0
- participants:
- attacker:
- addr: 10.1.13.1 locality=OUT
- target:
- addr: 10.1.23.2 locality=OUT
- actions:
- denyAttackerServicePairRequestedNotPerformed: true
- riskRatingValue: 25
- interface: ge0_1
- protocol: icmp
- evIdsAlert: eventId=1185793501059155080 vendor=Cisco severity=medium
- originator:
- hostId: ips4215
- appName: sensorApp
- appInstanceId: 340
- time: 2012年8月19日 上午09时57分51秒 offset=0 timeZone=UTC
- signature: description=ICMP Flood id=2152 version=S1
- subsigId: 0
- interfaceGroup:
- vlan: 0
- participants:
- attacker:
- addr: 10.1.13.1 locality=OUT
- target:
- addr: 10.1.23.2 locality=OUT
- riskRatingValue: 75
- interface: ge0_1
- protocol: icmp
4.路由器IP Traffic Export其他配置:
A.导出双向流量:
ip traffic-export profile test
interface FastEthernet1/0
bidirectional
mac-address 000c.2920.d8d5
B.流量过滤:
ip traffic-export profile test
interface FastEthernet1/0
bidirectional
incoming access-list incoming.acl
outgoing access-list outgoing.acl
mac-address 000c.2920.d8d5
B.流量采样:
ip traffic-export profile test
interface FastEthernet1/0
bidirectional
incoming access-list incoming.acl
outgoing access-list outgoing.acl
mac-address 000c.2920.d8d5
incoming sample one-in-every 2
outgoing sample one-in-every 3
企业级网络产品,往往还有其功能一般都是被荒废的,大家可以慢慢的发掘,好好的利用起来。