What is NetFlow?

NetFlow is a network protocol that is used to report information about the traffic on a router, switch, or other traffic-conducting network device. NetFlow works by collecting and summarizing the data that is carried over a device, and then transmitting that summary to another device, called a collector, for storage and analysis.

NetFlow Monitor is a software-based NetFlow collector designed for use on servers running Microsoft Windows operating systems. After configuring routers, switches, and other devices to transmit NetFlow summary data to NetFlow Monitor, you can view reports that allow you to:

• View network usage trends to determine when to upgrade hardware to increase network capacity.
• Recognize and correct network configuration issues that may needlessly consume network resources or expose your network to security vulnerabilities.
• Identify traffic which may indicate undesired network usage, such as unauthorized use of peer-to-peer file sharing applications or a denial-of-service attack against your organization.
• Troubleshoot and correct causes of spikes in network traffic before they become problems.