Opensource Netflow

NetFlow provides deep network visibility by summarizing traffic into metadata, such as source and destination IPs, ports, and protocols, without the storage burden of full packet captures. For open-source enthusiasts, it offers a way to monitor "who is talking to whom" at scale using free, community-driven tools. 🛠️ The Open Source Stack

: A lightweight, high-performance probe that converts raw traffic into NetFlow or IPFIX records. opensource netflow

| Tool | Strengths | |------|------------| | | Blazing fast CLI; pairs with nfsen for a web GUI. Classic, stable. | | pmacct | Super flexible: can write to MySQL, PostgreSQL, Kafka, or flat files. Mimics NetFlow, sFlow, IPFIX. | | ElastiFlow | Integrates NetFlow with Elasticsearch, Logstash, Kibana (ELK). Great for large-scale dashboards. | | GoFlow | Modern, high-performance NetFlow/IPFIX collector written in Go. Excellent as a Kafka producer. | | Tool | Strengths | |------|------------| | |