Gatekeeper vs NETSCOUT Arbor Cloud DDoS Protection Services: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros and cons, compared head to head.
Gatekeeper is a free ddos mitigation tool. NETSCOUT Arbor Cloud DDoS Protection Services is a commercial ddos mitigation tool by NETSCOUT. Compare features, ratings, integrations, and community reviews side by side to find the best ddos mitigation fit for your security stack. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
CST VerdictShort answer
Network operators and service providers facing multi-vector DDoS attacks will find Gatekeeper's distributed algorithm approach valuable because it actually scales with your bandwidth requirements instead of hitting throughput walls like centralized scrubbing centers do. The open source model with 1,591 GitHub stars means you're not locked into vendor infrastructure, and deployment across your own edge nodes gives you detection latency measured in milliseconds rather than the round-trip delays of cloud mitigation services. Skip this if your primary concern is stopping Layer 7 application attacks; Gatekeeper prioritizes network-layer volumetric defense, leaving sophisticated HTTP floods to separate WAF tooling. Mid-market and enterprise security teams expecting sub-60-second mitigation during active attacks should prioritize NETSCOUT Arbor Cloud DDoS Protection Services, where the hybrid deployment model keeps your on-premise traffic off the public internet while still routing under attack. The 16 global scrubbing centers with 15 Tbps capacity and sub-60-second SLA are backed by actual ATLAS threat intelligence, not generic signatures. This isn't for organizations looking to consolidate DDoS defense with their WAF or for teams that need deep application-layer visibility post-mitigation; Arbor stops the flood, but detection stops at the scrubbing center.
