Cisco NetRanger is an enterprise-scale, real-time, intrusion detection system designed to detect, report, and terminate unauthorized activity throughout a network. The industry's first enterprise-scale intrusion detection system, Cisco NetRanger is the dynamic security component of Cisco's end-to-end security product line. Cisco NetRanger is an ideal solution for companies who need to know if their network is under attack from internal or external sources.Because Cisco NetRanger incorporates user-defined feedback into the Sensor, the system can automatically "shun" or eliminate specific connections identified with the unauthorized activity. This feature can be temporary, if desired, or maintained indefinitely. The rest of the network traffic will function normally; only the unauthorized traffic from internal users or external intruders will be quickly and effectively removed. By changing Access Control Lists (ACLs) of Cisco routers instantly as unauthorized activity is detected, Cisco NetRanger can dramatically improve security posture. The Cisco NetRanger Director scalability and performance can centrally monitor the activity of dozens of Cisco NetRanger Sensors located on different types of network connections. For extremely large, distributed networks with complex alarming and communication requirements, the Cisco NetRanger Director can be implemented in a multitiered hierarchy, enabling a virtually unlimited number of Sensors to be monitored. Because the Director also remotely controls the configuration of the Cisco NetRanger Sensors via an intuitive Java-based GUI integrated into a network management system, an organization can monitor the security of its connections from one centralized location, thereby consolidating personnel, reducing costs, and ensuring consistent security policy enforcement enterprise-wide. The Cisco NetRanger Director can also feed alarm information into an adjacent database archive. Information such as the origin, type, destination, and time of attacks is all logged for trend analysis and may easily be used to generate custom graphs and reports. These outputs-which are based on real data-give an enterprise unprecedented capability to make solid operational security decisions regarding its network. With Cisco NetRanger, you'll know just how secure your network really is.