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The NNM® Application

Tenable Nessus Network Monitor is a network discovery and vulnerability analysis software solution, delivering real-time network profiling and monitoring for continuous assessment of an organization’s security posture in a non-intrusive manner. The Nessus Network Monitor (NNM) monitors network traffic at the packet layer to determine topology, services, and vulnerabilities. Where an active scanner takes a snapshot of the network in time, the Nessus Network Monitor behaves like a security motion detector on the network.

The Nessus Network Monitor application must be activated and configured to make the system manageable via a web browser or used by SecurityCenter.

Note: Until a valid Activation Code is entered, the message Invalid/Expired Activation Code will be displayed in red on the Appliance page.

Copyright © 2019 Tenable, Inc. All rights reserved. Tenable,, Tenable Network Security, Nessus, SecurityCenter, SecurityCenter Continuous View and Log Correlation Engine are registered trademarks of Tenable, Inc.., Lumin, Assure, and the Cyber Exposure Company are trademarks of Tenable, Inc. All other products or services are trademarks of their respective owners.