SonicWall Stateful HA Upgrade for TZ370 Series | Security Licensing — 02-SSC-8052

Keep critical network services available when a firewall fails. The SonicWall Stateful HA Upgrade for TZ370 Series adds stateful high availability to supported TZ370 deployments, preserving session state so users experience a cleaner failover and fewer interruptions. For branch offices and distributed sites, that means less risk to VPN access, business applications, and remote work traffic when hardware maintenance or an unexpected outage occurs. This license is designed for organizations that depend on the TZ370 as a perimeter control point and need continuity beyond basic redundancy. By maintaining synchronized state information between paired appliances, it helps reduce the operational impact of failover events and supports tighter uptime expectations without changing the underlying security architecture. For teams standardizing on SonicWall, this upgrade is a practical way to extend the value of the existing platform while protecting service availability. It is especially relevant where downtime carries direct business cost and where a lower-cost, stateless failover model is not enough. Ideal For Branch office firewall redundancy for business-critical connectivity Failover protection for VPN and remote access traffic Maintenance windows where firewall continuity must be preserved Distributed site security deployments requiring higher availability Why This Product 1 Adds stateful failover instead of basic redundancy 2 Preserves active sessions during appliance transition 3 Targets SonicWall TZ370 Series deployments 4 License-based upgrade for existing firewall environments