针对IEEE 802.11 CSMA/CA的RTS-CTS攻击  

RTS- CTS Attack on IEEE 802.11 CSMA/CA

作　　者：曹春杰[1,2] 杨红娃[1,2] 王巍[1,2] 

机构地区：[1]通信系统信息控制技术国家级重点实验室,浙江嘉兴314033 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2009年第4期32-35,共4页Communication Countermeasures

摘　　要：IEEE802．11 CSMA／CA通过退避过程中随机选择的时隙来均衡网络流量，而时隙由各个通信节点自主随机选择。提出了一种RTS—CTS攻击：攻击者通过修改竞争窗口，优先抢占业务信道。该攻击可使目标工作站或者网络接入点保持静默，甚至造成网络瘫痪。理论分析和仿真结果表明该方法具有很高的成功率。All the network traffic in IEEE 802.11 WLAN are equalized by the randomly selected slots during back-offstage of CSMA/CA, and these slots are independently selected by the stations themselves. Based on the vulnerability above, a kind of RTS-CTS attack is presented, which makes the attacker have the priority of the traffic channel access by modifying the contention window. The attack can make object stations or access point （AP） stay quiet, even the whole WLAN is corrupted. The analysis and simulation results show that the attack has a high success ratio.

关 键 词：IEEE 802.11 CSMA/CA RTS—CTS 攻击 

分 类 号：TN925.93[电子电信—通信与信息系统] TP393.1[电子电信—信息与通信工程]