The Cisco VPN 3000 Concentrator Series is a family of purpose-built, remote-access Virtual Private Network (VPN) platforms and client software that incorporates high availability, high performance and scalability with the most advanced encryption and authentication techniques available today. With the Cisco VPN 3000 Concentrator Series, customers can take advantage of the latest VPN technology to vastly reduce their communications expenditures. Unique to the industry, it is the only scalable platform to offer field-swappable and customer-upgradeable components. These components, called Scalable Encryption Processing (SEP) modules, enable users to easily add capacity and throughput.Cisco customers can choose, from a range of VPN 3000 Concentrator models, the specific unit that most suits their needs and applications. The VPN 3000 Concentrator Series includes models to support a range of enterprise customers, from small businesses with 100 or fewer remote-access users to large organizations with up to 10, 000 simultaneous remote users. With all versions of the Cisco VPN 3000 Concentrator, the Cisco VPN 3000 Client is provided at no additional charge and includes unlimited distribution licensing. The Cisco VPN 3000 Concentrator Series is available in both non-redundant and redundant configurations, allowing customers to build the most robust, reliable and cost-effective networks possible. In addition, advanced routing capabilities, such as OSPF, RIP, and Network Address Translation (NAT) are available.