Nfsen-ng
nfsen-ng is an open-source rewrite and replacement of the popular NetFlow analysis software nfsen. It provides an intuitive web-based interface for analyzing NetFlow and other network flow data in real-time.
Nfsen-NG: Open-Source NetFlow Analysis Software
nfsen-ng is an open-source rewrite and replacement of the popular NetFlow analysis software nfsen. It provides an intuitive web-based interface for analyzing NetFlow and other network flow data in real-time.
What is Nfsen-ng?
nfsen-ng is an open-source network flow analyzer that allows users to collect, process, and visualize NetFlow, sFlow, IPFIX, and other network flow data in real-time. It is a complete rewrite and modernization of the classic nfsen software.
Some key features and benefits of nfsen-ng include:
- Web-based user interface provides at-a-glance views of network traffic data, including metrics like bandwidth usage, top flows/hosts, and traffic flows
- Open-source and written in Go so it can handle extremely large data volumes without loss of performance or accuracy
- Supports NetFlow (v5, v9, IPFIX), sFlow, jFlow, and many other formats out of the box
- Easily customizable through plugins and modules
- Scales horizontally across multiple collectors to capture flows from very large networks
- Includes advanced features such as security analysis, anomaly detection, and automated packet capture support
- Widely used by universities, ISPs, large enterprises, and network operators
nfsen-ng improves on the classic nfsen in almost all aspects, making it an ideal choice for modern high-speed flow analysis and network monitoring applications today.
Nfsen-ng Features
Features
- Real-time NetFlow data analysis
- Web-based interface for visualizing network traffic
- Support for NetFlow (v5, v9, IPFIX), sFlow, jFlow, Netstream
- Customizable dashboards and graphs
- Alerting based on traffic thresholds
- Role-based access control
- IPv4 and IPv6 support
- Plugin architecture for adding new input formats
Pricing
- Open Source
Pros
Open source and free
Intuitive and user-friendly interface
Real-time traffic monitoring
Extensive protocol and format support
Easy to deploy and configure
Scales to large networks and high bandwidth
Active development community
Cons
Limited historic data retention
Steep learning curve for advanced features
Requires external database for long-term storage
Lacks some enterprise/commercial features
Official Links
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