A few months ago we published a technical white paper explaining how we measure the performance of Cisco IPS sensors. The idea was to give Cisco IPS customers insight into the work that goes into producing the performance numbers that are recorded in a data sheet, with the ultimate goal of helping customers deploy the correct IPS appliance for their environment. We have now followed up the performance work with a paper describing how we test the effectiveness of our IPS product line.
The Cisco Intrusion Prevention System (IPS) includes Global Correlation capabilities that utilize real-world data from Cisco Security Intelligence Operations (SIO). We have seen on this blog before how IPS Global Correlation can be used to detect and validate the urgency of emergent threats as well as allow our team to hone the protection capabilities of our IPS Sensors.
Perhaps more fundamentally however, Global Correlation allows Cisco IPS Sensors to filter network traffic using the “reputation” of a packet’s source IP address. The reputation of an IP address is computed by Cisco SensorBase using the past actions of that IP address. IP reputation has been an effective means of predicting the trustworthiness of current and future behaviors from an IP address.
Our team has recently published a new white paper that explores the benefits of IPS Global Correlation and how they relate to various IPS deployment scenarios. I would like to share a couple of items from the white paper and encourage you to read it for more information.