Take network security to the next level. As a Next-Generation Firewall for mid-size organizations, the Dell™ SonicWALL™ Network Security Appliance (NSA) 4600 delivers security and performance without compromise. Coupled with Dell’s patented1 Reassembly-Free Deep Packet Inspection® (RFDPI) single-pass threat prevention engine, all Dell 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.