The Integrated Services Adapter provides high-performance, hardware-assisted tunneling and encryption services suitable for private WAN and virtual private network (VPN) applications. As an integral component of Cisco security solutions, the ISA provides encryption scalability while working seamlessly with advanced WAN and VPN services such as quality of service (QoS), firewall and intrusion detection, and service-level validation. This feature integration, combined with ISA support for the broad set of LAN/WAN media and services, ensures the smooth integration of encryption technology into virtually any enterprise or service provider network environment.