Our research program focuses on the shared vision of the future Internet as the common, ubiquitous and global communications infrastructure. Clearly, such an Internet must incorporate significant new capabilities when compared to today's Internet, or even the "next" Internet as manifested by the Next Generation Internet and Internet2 initiatives. We have identified six fundamental barriers to achieving this vision.

1. Access bandwidth. Today's Internet has pushed the performance "bottleneck" from the backbone to the access network. The future Internet must provide broadband access to push the "bottleneck" out from the access link, ultimately to the application designer's imagination.
2. Mobility. The future Internet must provide mobile network connectivity that matches the business success and consumer acceptance of cellular telephony and exceeds the capabilities of today's wireline networks.
3. Network support for generic devices. The future Internet must provide connectivity for devices that look nothing like traditional computers and must allow users with access to common information and services from different devices.
4. Quality of service. Today's "best effort" service is adequate for applications like e-mail and web browsing. But, the future Internet must support quality of service if it is to subsume the circuit-switched voice network and enable multimedia and other applications.
5. Security. In place of today's somewhat ad hoc security mechanisms, which are not trusted by many users, the future Internet must provide integrated, end-to-end security that is suitable for all but the most sensitive of classified information.
6. Management of large-scale networks. Tools and techniques are needed to manage the future Internet so that it can scale to meet the service requirements of its operators and users while supporting both mobility and quality of service and experiencing tremendous growth.