Once you have the system installed you can easily test that the sensor is seeing the packets, and alarming on the triggered signatures by enabling the icmp signatures and setting them to high priority, approving/applying the commands and then ping and address on the same segment as the sniffing interface of the sensor. If you get the alarms, you are in action but will probably then want to lower the priority or disable the icmp alarm back to how you had it set originally.
If you are not getting the alarm, you will need to troubleshoot from there- packetd running... sensor is seeing the packets on the sniffing port...
Hope this Helps...
Marcus
