The Cisco Secure Firewall with Adaptive Security Appliance (ASA) software provides robust, proven Layer 3 and 4 control. Ideal for small, mid-sized, and branch offices, this 1RU appliance includes support for advanced remote access VPN termination, plus Border Gateway Protocol (BGP) and Open Shortest Path First (OSPF) routing functions. When Layer 7 application control and advanced threat defense are also required, select instead the Firepower 1120 appliance with FTD software.