The Firebox X Core e-Series unified threat management (UTM) solutions provide the most complete security in their class, integrating built-in zero day protection with a powerful UTM software suite for an unbeatable combination of security capabilities. Powerful, yet easy to configure and manage, they protect your network with multi-layered defenses to block spyware, viruses, worms, trojans, spam, Dos and DDoS attacks, SQL injections, buffer overflows, web-based exploits, and other blended threats. The X550e is the most economical of the Firebox X Core models and an excellent choice for a small to mid-size business.