January 01, 2020

Secure cloud computing with a virtualized network infrastructure

  • Hao F.
  • Lakshman T.
  • Mukherjee S.
  • Song H.

© USENIX Workshop on Hot Topics in Cloud Computing, HotCloud 2010.All right reserved. Despite the rapid development in the field of cloud computing, security is still one of the major hurdles to cloud computing adoption. Most cloud services (e.g. Amazon EC2) are offered at low cost without much protection to users. At the other end of the spectrum, highly secured cloud services (e.g. Google ?government cloud?) are offered at much higher cost by using isolated hardware, facility, and administrators with security clearance. In this paper, we explore the ?middle ground?, where users can still share physical hardware resource, but user networks are isolated and accesses are controlled in the way similar to that in enterprise networks. We believe this covers the need for most enterprise and individual users. We propose an architecture that takes advantage of network virtualization and centralized controller. This architecture overcomes scalability limitations of prior solutions based on VLANs, and enables users to customize security policy settings the same way they control their on-site network.

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Recent Publications

May 01, 2020

A Packaged 0.01-26-GHz Single-Chip SiGe Reflectometer for Two-Port Vector Network Analyzers

  • Chung H.
  • Ma Q.
  • Rebeiz G.
  • Sayginer M.

© 1963-2012 IEEE. This article presents a packaged SiGe BiCMOS reflectometer for 0.01-26-GHz two-port vector network analyzers (VNAs). The reflectometer chip is composed of a resistive bridge coupler and two wideband heterodyne receivers for coherent magnitude and phase detection. In addition, a high-linearity receiver channel is designed to accommodate 20 ...

August 01, 2019

Protecting photonic quantum states using topology

  • Blanco-Redondo A.

The use of topology to protect quantum information is well-known to the condensed-matter community and, indeed, topological quantum computing is a bursting field of research and one of the competing avenues to demonstrate that quantum computers can complete certain problems that classical computers cannot. In photonics, however, we are only ...

May 01, 2019

Digital networks at the nexus of productivity growth

  • Kamat S.
  • Prakash S.
  • Saniee I.
  • Weldon M.

This paper takes a fresh look at the debate over the relationship between digital technology and productivity. The argument of economic historian Robert J. Gordon is that digital technology will not lead to increases in productivity such as we saw in the last century, based on his analysis of the ...