SONICWALL NSA E5500 UTM 8PT 10/100/1000 The SonicWALL E-Class Network Security Appliance (NSA) E5500 is a high performance, multi-service network security platform engineered to be the workhorse of the enterprise network environment. Combining SonicWALL's re-assembly free deep packet inspection engine with 8-core parallel processing architecture, the NSA E5500 delivers exceptional protection and performance for the enterprise network environment. This solution offers enterprise network administrators an array of enterprise networking features, designed lower management complexity at an unrivaled value.