TY - GEN
T1 - Protecting MANETs from Spurious CTS attacks with randomized Carrier Sensing
AU - Deng, Jing
AU - Zhang, Zhiguo
AU - Pagadala, Sreekanth
AU - Varshney, Pramod K.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=49049099077&partnerID=8YFLogxK
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U2 - 10.1109/SARNOF.2008.4520045
DO - 10.1109/SARNOF.2008.4520045
M3 - Conference contribution
AN - SCOPUS:49049099077
SN - 1424418437
SN - 9781424418435
T3 - Proceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF
BT - Proceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF
T2 - 2008 IEEE Sarnoff Symposium, SARNOFF
Y2 - 28 April 2008 through 30 April 2008
ER -