Research And Realization Of DoS Attack To WLAN On 802.1X

Wireless Local Area Network (WLAN) becomes more and more common as development of communication technology. For convenient and wireless, any machines in available area could receive and send data. Therefore special interface of WLAN brings to security problems. At present, IEEE802.11 is main standard of WLAN. But it cannot provide robust security architecture for shortcomings in IEEE 802.11. WEP can be worked out in hours and cannot solve distribution of keys. So, more and more products use 802.1X standard in WLAN. However it still has shortcomings, for example, EAP-MD5 is unilateral authentication and cannot support generation of keys. At present, security research in 802.1X is very important.Studying protocol architecture and key technology of WLAN, this paper designs and realizes the program which is used to DoS (Denial of Service) attack to WLAN based on 802.1X. Because invading and defending are supplement each other. Improvement of invading will accelerate progress of defending technology. This program has four modules: initialization module, attack module, receiving module and prediction module. Attack module sends authentication data to AP(Access Point) according to Extensible Authentication Protocol. It will make AP lack of resource. Attack module has some queues to ensure efficiency and intensity. Receiving module and prediction module are designed to dodge intellectual firewall. Prediction module divides progress of attack into many time slices. Intensity in each time slices will be determined by statisitic data from receiving module. At last, program hides itself in run time by some advanced technology.Finally, paper summarizes all research working and foresees trend in future.