A key component of the cisco securex framework, the cisco asa 5500 series integrates the world's most proven firewall with a robust suite of highly integrated, market-leading security services for networks of all sizes - small and midsize business with one or a few locations, large enterprises, service providers, and mission-critical data centers. The cisco asa 5500 series delivers multistage performance and functionality with unprecedented services flexibility, modular scalability, feature extensibility, and lower deployment and operations costs.