September 05, 2019

OSAA: On-Demand Source Authentication and Authorization in the Internet

  • Dabinski B.

Lack of ability to control inbound traffic is one of the essential security vulnerabilities of the present Internet. It is the consequence of the fundamental fact that the Internet was built as a highly distributed public network, in which every node may freely send arbitrary traffic to any other node. This vulnerability can be exploited by a variety of DoS attacks (with a volumetric DDoS attack being the most prominent example) or non-malicious phenomena like flash crowds. In this paper, state-of-the-art solutions aiming to mitigate these risks have been discussed and a novel proposal, On-demand Source Authentication and Authorization (OSAA), has been presented. OSAA does not target a particular threat but addresses the root cause of the vulnerability. The proposed architecture enables Internet end nodes to authenticate traffic sources and facilitates cost-effective filtering of unauthorized traffic. The solution is based on a capability-based security model and public key infrastructure. Key characteristics of OSAA are strong security of provided services and a viable business case with clear economic incentives for parties bearing the workload.

View Original Article

Recent Publications

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 ...

January 01, 2019

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...