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This is often caused by a high number of "flows per second." Consider increasing RAM or upgrading the CPU.
Ensure UDP port 9996 (default for flows) and HTTPS port 8060 (default for web UI) are open in your firewall. Installation Steps for Windows manageengine netflow analyzer installation guide top
Once the software is installed, follow these top steps to ensure accurate data collection. 💡 Enable Flow Export on Routers This is often caused by a high number of "flows per second
NetFlow Analyzer is a "passive" listener. You must configure your hardware (Cisco, Juniper, HP, etc.) to send flows to the server's IP address. Specify the destination IP (your NetFlow server). Specify the destination port (usually 9996). Enable flows on all active interfaces. 🛡️ Secure the Web Interface By default, the login is admin/admin . Change the default password immediately. 💡 Enable Flow Export on Routers NetFlow Analyzer
Ensure the PostgreSQL service (bundled with the app) has permission to write to the disk.
Opt to install NetFlow Analyzer as a Windows Service so it starts automatically upon reboot. Finish: Complete the wizard and launch the web console. Installation Steps for Linux
Check if the UDP port 9996 is blocked by a local firewall or an intermediate ACL.