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get ccna certification.420 Chapter 11 Network and Host Insight Techniquesinto wire-speed, nonsampled NetFlow data, which can be used to generate NetFlow data. In this case, the Cisco NetFlow Generator Appliance (NGA) can also be used to generate NetFlow data.FlowReplicator: A physical device that is used to forward NetFlow data to other devices as a single data flow.Stealthwatch IDentity: Exercises the user identity monitoring function. Administrators can search for a user name to learn about that user's behavior using the network. Identity data can be learned through the Stealthwatch IDentity appliance or through integration with Cisco ISE.Note: Lancope Stealthwatch also supports user names in NetFlow records generated by CiscoASA devices.The Lancope Stealthwatch solution supports a feature called network address translation stitching (NAT stitching). NAT stitching combines NAT information from inside the firewall (or NAT appliance) with information from outside the firewall (or NAT appliance) to determine which IP addresses and users are part of a particular data flow, based on data taken from the network device.Another key benefit of the LancopeStealthwatch solution is its graphical interface capabilities, including the ability to present network traffic in a visual way, the ability to generate custom summary reports, and intelligent in-depth analysis that integrates security and networking. Figure 11.20 shows the SecurityInsightDashboard interface for the LancopeStealthwatch Management Center (SMC).Figure 11-20 Security Insight Dashboard Interface With Lancope's Stealthwatch, you can not only drill down to see all the traffic being inspected by the system, but you can also11.2 Network Insight Technologies 421Search for violations of the security policy, as shown in Figure ll.2l. Figure 11-21 StealthwatchPolicy Violation (Policy Violation) interface