The Cisco PIX 515E Firewall is an enhanced version of the widely popular Cisco PIX 515 platform, providing industry-leading stateful firewall and IP Security (IPSec) virtual private networking (VPN) services. Designed for small and medium businesses, as well as enterprise remote offices, the Cisco PIX 515E features increased processing power and integrated, hardware-based IPSec acceleration (certain models) delivering even more robust performance for high-throughput security requirements.The Cisco PIX 515E "Restricted" model provides an excellent value for organizations looking for robust Cisco PIX Firewall services with minimal interface density and VPN throughput requirements.