Connect All IP-based Smart Objects!

CALIPSO builds Internet Protocol (IP) connected smart object networks, but with novel methods to attain very low power consumption, thereby providing both interoperability and long lifetimes. CALIPSO leans on the significant body of work on sensor networks to integrate radio duty cycling and data-centric mechanisms into the IPv6 stack, something that existing work has not previously done. CALIPSO works at three layers: the network, the routing, and the application layer. We also revisit architectural decisions on naming, identification, and the use of middle-boxes.

Recent Posts

An Experimental Study of Attacks on the Availability of Glossy

Kasun Hewage, Shahid Raza, Thiemo Voigt, An Experimental Study of
Attacks on the Availability of Glossy Computers and Electrical Engineering Journal, September 2014

Available: http://link.springer.com/chapter/10.1007%2F978-3-319-03071-5_13

Abstract: Glossy is a reliable and low latency flooding mechanism designed primarily for distributed communication in wireless sensor networks (WSN). Glossy achieves its superior performance over tree-based wireless sensor net- works by exploiting constructive interference that happens when several nodes transmit packets with identical content simultaneously. The Low-power Wireless Bus (LWB), developed over Glossy, is a breakthrough in sensor networking research since it does not need to maintain any topology-dependent network state. WSNs are subject to wireless attacks aimed to disrupt the legitimate network operations. Real-world deployments require security and the current Glossy implementation has no built-in security mechanisms.

In this paper, we explore the effectiveness of several attacks that attempt to break constructive interference in Glossy. Our results show that Glossy is quite robust to approaches where attackers do not respect the timing constraints necessary to create constructive interference. Changing the packet content, however, has a severe effect on the packet reception rate that is even more detrimental than other physical layer denial-of-service attacks such as jamming. We also discuss potential countermeasures to address these security threats and vulnerabilities.

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