As a Next-Generation Firewall for growing small to medium businesses, the SonicWall Network Security Appliance (NSA) 3600 delivers security and performance without compromise. Coupled with Reassembly-Free Deep Packet Inspection (RFDPI) single-pass threat prevention engine, all SonicWall Next-Generation Firewalls provide industry leading protection, performance, and scalability with the highest number of concurrent connections, lowest latency, no file size limitations and superior connections per second in their class.