What must be configured to enable Cisco IPS appliance reputation filtering and global correlation?
A.
DNS server(s) IP address
B.
full sensor based network participation
C.
trusted hosts settings
D.
external product interfaces settings
Explanation:
http://www.cisco.com/en/US/docs/security/ips/7.0/configuration/guide/ime/ime_collaboration.ht ml
Global Correlation Requirements
Global correlation has the following requirements:
·Valid license
You must have a valid sensor license for global correlation features to function. You can still configure and display statistics for the global correlation features, but
the global correlation databases are cleared and no updates are attempted. Once you install a valid license, the global correlation features are reactivated.
·Agree to network participation disclaimer
·External connectivity for sensor and a DNS server
The global correlation features of IPS 7.0 require the sensor to connect to the Cisco SensorBase Network.
Domain name resolution is also required for these features to function. You can either configure the sensor to connect through an HTTP proxy server that has a
DNS client running on it, or you can assign an Internet routable address to the management interface of the sensor and configure the sensor to use a DNS server.
In IPS 7.0 the HTTP proxy and DNS servers are used only by the global correlation features.