The Cisco ASA 5540 Adaptive Security Appliance delivers high-performance, high-density security services with Active/Active high availability and Gigabit Ethernet connectivity for medium-sized and large enterprise and service-provider networks, in a reliable, modular appliance. With four Gigabit Ethernet interfaces and support for up to 200 VLANs, businesses can use the Cisco ASA 5540 to 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 the AIP-SSM for high-performance intrusion prevention and worm mitigation. Businesses can scale their IPSec and SSL VPN capacity through multiple means to support a larger number of mobile workers, remote sites, and business partners. VPN capacity and resiliency can be increased by taking advantage of the integrated VPN clustering and load-balancing capabilities of the Cisco ASA 5540 Adaptive Security Appliance.