SonicWall DNS Security Service for NSSP 15700 4-Year | Threat Protection

Extend DNS-layer protection across SonicWall NSSP 15700 environments with a 4-year DNS Security Service subscription. DNS is a frequent path for command-and-control traffic, phishing redirects, and domain-based malware delivery, so adding inspection at this layer helps close a gap that perimeter filtering alone can miss. This service is suited to security teams that want to reduce exposure without adding operational complexity. It supports policy-driven control over DNS requests, helping block access to known malicious destinations and suspicious domains before connections are established. That means fewer incidents to investigate and less risk of users reaching harmful infrastructure. For enterprises standardizing security services across branch, campus, or distributed edge deployments, the 4-year term simplifies procurement and renewal planning. It is a practical fit when the goal is to preserve network performance while adding a focused layer of protection that complements the firewall stack.