The Virtual Sensors page is where you create, name, and configure virtual sensors on your Cisco IPS devices. A virtual sensor is a logical grouping of sensing interfaces and the configuration policy for the signature engines and event action filters to apply. The process of creating and naming virtual sensors on your Cisco IPS devices is sometimes called "virtualization." Virtualization is the separation of a single physical IPS device into two or more logical devices on the basis of port, IP address range, VLAN tag, and other criteria