You can think of the Cisco IDM and IEV as the small office/home office (SOHO) equivalent to the IDS Management Center (MC) and Security Monitor for Virtual Private Network (VPN)/Security Management Solution (VMS), respectively. As scaled-down versions of their enterprise cousins IDS MC and Security Monitor, IDM and IEV offer features that are designed for use in smaller IDS deployments. Although IDM provides a graphical interface to manage a single sensor device, IEV allows you to monitor up to five IDS sensor devices.