Cisco® ASA 5500-X Series Next-Generation Firewalls integrate the world's most proven stateful inspection firewall with a comprehensive suite of next-generation firewall services for networks of all sizes - small and midsize businesses with one or more locations, large enterprises, service providers, and mission-critical data centers. Cisco ASA 5500-X Series Next-Generation Firewalls deliver Cisco MultiScale™performance with industry-leading service flexibility, modular scalability, feature extensibility, and low deployment and operation costs.