The Dell Sonic WALL E-Class Network Security Appliance (NSA) Series is the industrys first multi-core Unified Threat Management (UTM) solution, delivering enterprise-class Reassembly-Free Deep Packet Inspection without significantly impacting network throughput. Combining a powerful deep packet inspection firewall with multiple layers of protection technology & a suite of high availability features, the E-Class E5500 appliance offers a broad range of scalable solutions for enterprise deployments in distributed environments, campus networks & data centers.