SonicWall TZ670 Secure Upgrade Appliance | Next-Gen Firewall, Enterprise

Move to the SonicWall TZ670 Secure Upgrade Appliance when you need a clean hardware refresh path for an existing environment. This SKU is appliance only, with no attached subscription, and is intended for current SonicWall customers who already have an active SonicProtect subscription. That makes it a precise fit for organizations that want to refresh the firewall platform while keeping service coverage under an existing agreement. For infrastructure teams, the value is in control. You get a defined upgrade route instead of a bundled purchase, which helps align hardware replacement with the lifecycle of the current security stack. It also avoids paying twice for services already in place. That matters when the goal is to keep branch protection current while preserving budget for the rest of the network. The TZ670 upgrade appliance is best suited to environments where standardization matters and downtime does not. It supports a disciplined refresh strategy for SonicWall customers who need to maintain continuity, keep procurement clean, and move to the next appliance tier without changing the service model already in production.