F5 BIG-IP DNS vs Link11: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
F5 BIG-IP DNS is a commercial distributed denial of service mitigation tool by F5. Link11 is a commercial distributed denial of service mitigation tool by Link11. Compare features, ratings, integrations, and community reviews side by side to find the best distributed denial of service mitigation fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Enterprise and mid-market security teams needing DNS-layer DDoS defense at scale should evaluate F5 BIG-IP DNS for its ability to absorb volumetric attacks while maintaining authoritative DNS availability; the 100 million RPS capacity and integrated GSLB mean you're not bolting on a separate DDoS appliance. The tool maps cleanly to NIST PR.IR for infrastructure resilience, though its monitoring and anomaly detection lag behind dedicated threat detection platforms. Skip this if your organization needs DNS security to also cover recursive resolver hardening or advanced query-pattern analytics; BIG-IP DNS is built for the authoritative side of the nameserver equation.
Mid-market and enterprise teams in Europe handling sustained DDoS campaigns will get the most from Link11 because its flat-rate pricing removes the per-attack billing trap that bleeds budgets during sustained assaults. The platform's multi-terabit capacity and NetFlow-based detection handle volumetric attacks at network edge without requiring constant tuning, and GDPR-native EU infrastructure eliminates data residency friction for regulated industries. Skip this if you need global anycast failover or are heavily invested in US-only threat intelligence feeds; Link11's strength is regional depth, not planetary scale.
