The StealthWatch appliances, like rivals in this market, aren't cheap--the four we tested list for a total of $189,900--but their performance and features make clear why Lancope is a front-runner in network behavior analysis and set a formidable standard for the competition in this Rolling Review. The appliances let us baseline clients and servers, detect anomalous behavior, and monitor application and network performance, while letting users work in a rich, Java-based interface.
Essential to the system is the StealthWatch Management Console appliance, which correlates data from all the other appliances, handles users' Java clients, and generates reports. The StealthWatch NC performs direct packet capture, the StealthWatch Xe handles flow data, and the StealthWatch ID-1000 interfaces with directory services to provide user information to the Management Console. Most enterprises wouldn't need more than one Management Console and one ID-1000, but they might want several NC or Xe appliances, depending on the size and complexity of the networks to be analyzed.
Go With The Flow
Like competing tools from Arbor Networks and Riverbed Technology, the StealthWatch system leverages network flow data exported from network devices such as switches and routers as its major source for data analysis. It supports all flow data formats collected by the StealthWatch Xe appliance, including NetFlow, IPFIX, sFlow, and cflow.
In tests, StealthWatch Management Console and ID-1000 configuration and setup took only about an hour using the included quick setup guides. The system creates a baseline profile for every host on the network, including information such as ports used, regular bandwidth usage, and communication with other hosts.
When hosts exhibit behavior outside their baselines, StealthWatch quantifies that information and reports it via alarms, alerts, and probes that feed into three major indexes: the Target Index, the host being attacked; the File Sharing Index, which indicates if there is peer-to-peer activity; and the Concern Index, which determines potential risk by issuing a cumulative score. The higher the Concern Index score, the greater the likelihood there's a serious problem with the host device.
Lancope's impressive user interface makes heavy use of graphs and charts of network traffic, protocols, TCP flags, active flows, and much more. Graphs make it easy to spot trends over time, port scans, and large data transfers that could otherwise easily be overlooked. Groups looking to implement StealthWatch quickly will find the included dashboards a good starting point, with some focused on security and others on network stats. Custom dashboards are easy to design.
Reporting was straightforward, and enterprises that have security event managers such as ArcSight can leverage these systems for a unified monitoring and mitigation, or use the exposed SOAP-based Web service to pull information into other commercial or custom-built security event managers.
John H. Sawyer is a senior security engineer with the University of Florida. Write to us at [email protected].