The SonicWall DNS Filtering Service provides an essential layer of security by utilizing the Domain Name System (DNS) to block access to harmful websites and filter out unwanted content. This service is designed to enhance your network's security posture by preventing data breaches and reducing the workload on firewalls and other security solutions. With a service duration of one year, users can enjoy peace of mind knowing that their online activities are protected. The service is compatible with SonicWall TZ670 devices, ensuring seamless integration and maximum efficiency.