# AltraMayor/gatekeeper

The first open-source DDoS protection system

Repository: https://github.com/AltraMayor/gatekeeper
Canonical: https://ross.abutalabs.com/products/altramayor-gatekeeper
Homepage: https://github.com/AltraMayor/gatekeeper/wiki
Language: C
License: GPL-3.0
License Family: copyleft
Topics: dpdk, ddos, ddos-mitigation, ddos-protection, anti-ddos
Last push: 2025-11-05T13:11:51+00:00

## Health v2 (maintenance only)
Score: 45/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 50, release rhythm 8, longevity 100
- inputs: {"age_days": 3710, "days_push": 301, "days_rel": 611, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1633, forks 252 (observed 2026-08-28T04:05:14.160108+00:00)

## What it is
Gatekeeper is the first open-source DDoS protection system, built on DPDK for high-performance packet processing. It uses a geographically distributed architecture of Gatekeeper and Grantor servers with a centralized network policy to filter malicious traffic at scale.

## Use cases
- protect my network from DDoS attacks
- mitigate multi-vector DDoS attacks at internet exchange points
- filter malicious traffic at peering links
- deploy distributed DDoS scrubbing with centralized policy
- high-performance packet filtering with DPDK
- protect enterprise or ISP infrastructure from volumetric attacks

## When to choose
- you are a network operator at an ISP, IXP, enterprise, or content provider needing scalable DDoS mitigation
- you need line-rate packet filtering on commodity hardware with DPDK
- you want an open-source, self-hosted alternative to commercial DDoS scrubbing services

## When to avoid
- you are an individual Internet user wanting to protect a home connection
- you need simple application-layer (L7) DDoS protection for a single website behind a CDN
- you cannot deploy dedicated Linux servers with DPDK-compatible NICs and hugepages support

## Facets
- artifact type: service
- maturity: active
- function: security, networking, rate-limiting, monitoring
- domain: security, networking, infrastructure-as-code, self-hosted
- platform: self-hosted
- tags: ddos-protection, ddos-mitigation, anti-ddos, dpdk, high-performance-packet-processing, network-security, c, linux, docker

## Member repositories
- AltraMayor/gatekeeper (main) score 45

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:14.160108+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 2026-08-30T03:47:10.417607+00:00, confidence not recorded.
  - readme: https://github.com/AltraMayor/gatekeeper (fetched 2026-08-28T04:05:14.160108+00:00, sha 10301476955a)
  - homepage: https://github.com/AltraMayor/gatekeeper/wiki (fetched 2026-08-29T11:20:08.094312+00:00, sha b91d567ba224)
- Data as of 2026-08-30T08:39:29.467469+00:00.