Protecting MANETs from Spurious CTS attacks with randomized Carrier Sensing

Jing Deng, Zhiguo Zhang, Sreekanth Pagadala, Pramod K. Varshney

Research output: Chapter in Book/Entry/PoemConference contribution

1 Scopus citations


The Request-To-Send and Clear-To-Send (RTS/CTS) exchange has been used in Mobile Ad-hoc Networks (MANETs) to alleviate the hidden and exposed terminal problems. In such an exchange, the so-called Network Allocation Vector (NAV) indicates the current and future state of the channel. Unfortunately, this technique may suffer from virtual jamming by malicious nodes in the network. For example, malicious nodes may send periodic Spurious CTS (SCTS) packets with the sole purpose of forcing other nodes to update their NAV values and preventing them from using the channel. In this paper, we investigate the effect of such SCTS attacks and propose a solution, termed Carrier Sensing based Discarding (CSD). The CSD scheme serves as an add-on to the original RTS/CTS-based Medium Access Control schemes such as IEEE 802.11 DCF MAC. We further demonstrate the performance of our proposed scheme through analysis and the ns2 simulator.

Original languageEnglish (US)
Title of host publicationProceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF
StatePublished - 2008
Event2008 IEEE Sarnoff Symposium, SARNOFF - Princeton, NJ, United States
Duration: Apr 28 2008Apr 30 2008

Publication series

NameProceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF


Other2008 IEEE Sarnoff Symposium, SARNOFF
Country/TerritoryUnited States
CityPrinceton, NJ

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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