SonicWall DNS Filtering Service for NSA 4700, 2-Year | Security

Stop risky connections at the DNS layer and reduce the attack surface on your SonicWall NSA 4700. This 2-year DNS Filtering Service adds policy-based domain control that helps block access to malicious, phishing, and inappropriate sites before traffic ever reaches a destination. That matters when you need a control point that is fast to deploy, easy to manage, and effective across users, devices, and locations. For teams responsible for uptime and user safety, DNS filtering adds a practical layer of defense without changing endpoint workflows or re-architecting the network. It supports consistent enforcement of acceptable-use policies, helps limit exposure to known bad destinations, and gives security teams a cleaner way to manage web access at scale. Compared with basic firewall-only controls, DNS-layer filtering can close gaps earlier in the request path. This subscription is built for organizations that want dependable protection tied to the NSA 4700 platform and a defined 2-year service term. It is a strong fit for environments where security policy needs to be enforced with minimal operational overhead and clear renewal planning.