High-performance security engine uses patented Reassembly-Free Deep Packet Inspection technology* to examine traffic simultaneously across all ports without introducing latency to the network. Integrated intrusion prevention protects against a comprehensive array of network-based application-layer exploits that target both servers and client machines on the network. Tz 215 series features. The tz 215 provides intelligent protection, business-class performance, advanced networking features and configuration flexibility in an affordable desktop appliance that's easy to set up, operate and manage. High-performance security engine. The SonicWALL tz 215 uses patented reassembly-free deep packet inspection to examine traffic simultaneously across all ports without introducing latency to the network, enabling businesses to realize increased productivity gains.