文章基本信息

标题：Enhanced Timestamp Discrepancy to Limit Impact of Replay Attacks in MANETs
本地全文：下载
作者：Aziz Baayer ; Nourddine Enneya ; Mohammed Elkoutbi 等
期刊名称：Journal of Information Security
印刷版ISSN：2153-1234
电子版ISSN：2153-1242
出版年度：2012
卷号：3
期号：3
页码：224-230
DOI：10.4236/jis.2012.33028
出版社：Scientific Research Publishing
摘要：Mobile Ad hoc NETworks (MANETs), characterized by the free move of mobile nodes are more vulnerable to the trivial Denial-of-Service (DoS) attacks such as replay attacks. A replay attacker performs this attack at anytime and anywhere in the network by interception and retransmission of the valid signed messages. Consequently, the MANET performance is severally degraded by the overhead produced by the redundant valid messages. In this paper, we propose an enhancement of timestamp discrepancy used to validate a signed message and consequently limiting the impact of a replay attack. Our proposed timestamp concept estimates approximately the time where the message is received and validated by the received node. This estimation is based on the existing parameters defined at the 802.11 MAC layer.
关键词：MANET; Replay Attack; Denial-of-Service (DoS); 802.11 MAC Layer; Network Allocation Vector (NAV); Security Countermeasure