Prevent attacks from spreading through your network with best of breed security that combines firewall, anti virus, intrusion prevention, and Virtual Private Network (VPN) capabilities. The Cisco Adaptive Security Appliance (ASA) infrastructure boasts high-availability, visibility and security without the need for on-premise devices, delivering a network that processes high volumes of web content at high speeds. Cisco ASA has over 15 years of proven firewall and network security engineering, with more than one million security appliances deployed globally.