# pavel-odintsov/fastnetmon

Very fast DDoS sensor with sFlow/Netflow/IPFIX/SPAN support

Repository: https://github.com/pavel-odintsov/fastnetmon
Canonical: https://ross.abutalabs.com/products/fastnetmon
Language: C++
License: GPL-2.0
License Family: copyleft
Topics: fastnetmon, ddos, sflow, netflow, netmap, ipfix, pcap, dos, juniper, cisco, mikrotik, analyzer, ddos-mitigation, ddos-sensor, ddos-monitor, ddos-reporter, ddos-detector, netflow-collector, ddos-defender, attack-detector
Last push: 2026-07-20T15:05:58+00:00

## Health v2 (maintenance only)
Score: 81/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 93, release rhythm 54, longevity 100
- inputs: {"age_days": 4702, "days_push": 44, "days_rel": 94, "gap_med": 531, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3695, forks 588 (observed 2026-08-28T04:08:14.866989+00:00)

## What it is
FastNetMon Community Edition is a high-performance DDoS detection sensor that analyzes traffic from NetFlow, IPFIX, sFlow, AF_PACKET, and other capture engines. It detects hosts sending or receiving abnormal traffic volumes within seconds and can notify operators, run scripts, or announce blocked IPs via BGP.

## Use cases
- detect ddos attacks on my network in real time
- collect and analyze netflow and sflow traffic data
- automatically block attacking ips via bgp announcements
- monitor traffic thresholds per subnet with alerts
- export flow data to kafka or prometheus
- set up a ddos sensor for an isp network

## When to choose
- you need fast (1-2 second) DDoS detection at terabit scale from flow data or port mirrors
- you want automated mitigation hooks like BGP blackholing via ExaBGP or custom scripts
- you run a multi-vendor network (Cisco, Juniper, MikroTik) exporting NetFlow/sFlow/IPFIX

## When to avoid
- you need full-featured mitigation, GUI, and support - the Advanced commercial edition may fit better
- you only need simple bandwidth graphing rather than attack detection
- you cannot run a dedicated Linux sensor or collector

## Facets
- artifact type: application
- maturity: active
- function: monitoring, alerting, networking, analytics
- domain: networking, security, monitoring, self-hosted
- platform: bsd, cpp, cli
- tags: ddos-detection, netflow, sflow, ipfix, bgp-mitigation, traffic-analysis, prometheus, kafka, linux, macos

## Member repositories
- pavel-odintsov/fastnetmon (main) score 81

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:14.866989+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:31:05.687481+00:00, confidence not recorded.
  - readme: https://github.com/pavel-odintsov/fastnetmon (fetched 2026-08-28T04:08:14.866989+00:00, sha 614bfdf1006a)
- Data as of 2026-08-30T08:39:29.467469+00:00.