VoIP Protection Solution

Protect VoIP Services From Disruptive DDoS Attacks

The Nexusguard VoIP Protection Solution Guide explains how modern DDoS campaigns target VoIP providers and how to keep call quality and availability intact.​

What This Guide Covers

• Recent multi‑vector DDoS attacks (TCP, UDP, SIP, DNS) that cause congestion, call failures, and poor audio quality for VoIP and WISPs.​
• Why IP links, Session Border Controllers (SBCs), and SIP domains are critical components that must be protected to maintain VoIP uptime.​

Key Insights for VoIP Providers

• Attackers deliberately focus on SBCs with high‑volume, mixed‑vector attacks to disrupt call setup and ongoing sessions.​
• When SIP domains or DNS become unavailable, users cannot register or place calls, resulting in severe service outage and customer dissatisfaction.​

How Nexusguard Secures VoIP Infrastructure

• Origin Protection shields IP links and SBCs from L3/4 and L7 attacks with up to 2.24 Tbps capacity, deep‑learning‑based detection, and real‑time dashboards and analytics.​
• Cloud Diversion App automatically diverts traffic to Nexusguard scrubbing centers via /24 BGP announcements during attacks, returning only clean traffic over Direct Connect or GRE.​
• DNS Protection provides a scalable, globally distributed authoritative/secondary DNS platform to absorb DNS‑based DDoS while answering legitimate SIP and VoIP queries.​

Why Download This Solution Guide

• Understand today’s VoIP‑specific DDoS threats and how they impact SBCs, SIP domains, and user experience.​
• Learn a practical, cloud‑based defense architecture combining Origin Protection, Cloud Diversion, and DNS Protection for resilient VoIP services.​
• See how Nexusguard’s managed DDoS services help VoIP and WISP operators maintain reliable, high‑quality voice services under sustained attack.​