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The Cisco IPS Device Manager (IDM), shown in Figure 2-1, is a superb web-based graphical user interface (GUI) for managing a single IPS device. To maintain security, the IDM and the client engage in Transport Layer Security (TLS) and Secure Sockets Layer (SSL). The server uses a trusted host certificate to verify the identity of the management workstation. The client uses a server certificate to ensure the identity of the IPS device.