Cisco VPN 5000 Series Concentrators enable Service Providers to easily deploy managed VPN services. The Cisco VPN 5000 concentrators are purpose-built VPN concentrator platforms and associated VPN client software that incorporate the most advanced high-performance encryption and authentication techniques available. The Cisco VPN 5000 concentrators series is the most feature-rich carrier-class VPN product line on the market, with support for the most demanding multiplatform, multiprotocol environments.