The Cisco ASA 5540 Adaptive Security Appliance delivers a wide range of high-performance, high-density security services with Active/Active high availability and Gigabit Ethernet connectivity for medium-to-large enterprise and service-provider networks, in a reliable, modular appliance. Using its four Gigabit Ethernet interfaces and support for up to 100 VLANs, businesses can segment their network into numerous zones for improved security. The Cisco ASA 5540 Adaptive Security Appliance scales with businesses as their network security requirements grow, delivering exceptional investment protection and services scalability. The advanced network and application layer security services and anti-x defenses provided by the Cisco ASA 5540 Adaptive Security Appliance can be extended by deploying a high performance Security Services Module.