DNS Defender

Protect Your DNS Infrastructure, Cut Costs and Drive New Revenues

DNS is the service on which other Internet services depend. Yet DNS protocols and infrastructure were not architected for security and are vulnerable to an increasing variety of threats, from DDoS (distributed denial of service) attacks to poison pill and cache poisoning attempts. Such attacks can exact a heavy toll in network downtime, quality of service, liability, customer satisfaction and support costs.

DNS Defender is the first DNS firewall--designed specifically to safeguard DNS systems. DNS Defender uses multiple layers of protection to defend against the full range of DNS attacks, preventing costly DNS outages and maintaining optimal network performance in the face of the heaviest attacks and peak loads. DNS Defender also improves network efficiency and streamlines network operations, saving substantial costs. And it enables new and enhanced services, driving top-line revenues.

Features and Benefits

• Defends against complete range of DNS attacks: DDoS, poison pill, cache poisoning, buffer overflows
• Rate limits, selective blocking, support for industry-standard blacklists
• Query shedding
• Syntax checks

• DNS caching (up to 250,000 queries per second)
• Rate limiting of selective traffic (e.g., P2P traffic)

• Superior DNS security without expensive equipment redundancy
• Enhances network performance while reducing CAPEX
• Slashes customer support costs

• Redirect missed URL requests to an ad server, generating new revenues
• Improves overall QoS and supports revenue-generating service-level agreements (SLAs)

• Deploys on CloudShield CS-2000 System or IBM Bladecenter (via CloudShield PN41 Blade)

Read the data sheet

Customer Case Study