DDoS Protection
Absorbs volumetric and application denial-of-service attacks.
Overview
DDoS services scrub or rate-limit flood traffic before it overwhelms applications and links. Delivered via always-on cloud scrubbing, on-demand redirection, or on-prem appliances. Cost tracks clean-traffic commit, scrubbing capacity, and protected assets. Often bundled with CDN/WAF.
Core for any internet-facing service; protects availability.
Advantages
- Cloudflare & Akamai offer massive scrubbing capacity
- Cloudflare strong value with bundled WAF/CDN
- always-on options protect availability automatically.
Trade-offs
- Cost scales with clean-traffic commit
- on-prem appliances capped at link size
- CDN bundling creates lock-in.
Open-source option
Absorbing volumetric DDoS still depends on globally distributed scrubbing capacity and carrier peering that cannot be self-hosted — no OSS project substitutes for that. But FastNetMon Community (free, GPL-2.0) is a genuine, actively maintained open-source option for the detection/triggering half of the problem: it watches sFlow/NetFlow/IPFIX and can fire BGP FlowSpec or RTBH blackhole rules, real value for teams with their own upstream/carrier relationship. Edge proxies (NGINX/HAProxy) and nftables rate-limiting still blunt small L7 floods.
Vendors & tools in this area
Pure-play, always-on DDoS mitigation appliance/service vendor (SmartWall ONE).
Visit site →Open-source DDoS detection/trigger engine — the Community edition detects and calls out to BGP FlowSpec/RTBH, it is not itself a volumetric scrubbing service.
Visit site →