Research On Attack Strategy Of Tactical Mobile Ad Hoc Networks

With the continuous progress of information technology and the iterative upgrade of communication equipment,battlefield communication technology has developed rapidly.Tactical Mobile Ad Hoc Networks(TMANET)is mainly deployed on the front line.It has the characteristics of fast networking,multi-hop transmission and dynamic topology of traditional wireless Ad Hoc networks,and has a higher resistance to damage.Although TMANET facilitates the interconnection of communication equipment,the security risks to a certain extent provide the possibility for attack and control.Aiming at the security problems in TMANET,the mainstream research direction at present focuses on the performance optimization of its protocol,and there is a lack of comprehensive research on its attack direction.Therefore,this thesis mainly discusses and studies the attack strategy of TMANET in depth.Firstly,in order to study its specific behavior under attack,this thesis build TMANET platform based on NS3 based on the introduction of the system architecture and protocol architecture of TMANET,and the protocols of each layer are completely simulated.This thesis not only implements the functions of data unit encapsulation processing,time slot allocation and network access control,but also analyzes network performance indicators of TMANET to verifies the stability simulation platform.Secondly,in view of the security and vulnerability of TMANET protocol,the attack schemes applicable to TMANET are studied to enchance and verify the control capabilities of enemy’s tactical radio.Based on the analysis of the protocol vulnerability of data link layer,intranet layer and transport layer,this thesis proposes three schemes: TMANET MAC Occupying Channel Attack(TMOCA),TMANET Routing Black Hole Attack(TRBHA)and TMANET TCP-SYN Flooding Attack(TTSFA).At the same time,different attack models are built on TMANET platform based on NS3.The simulation results show that the three attack schemes can effectively reduce the network performance of TMANET,and verify the rationality of the attack model.Finally,in order to restore the topological structure of TMANET and analyse the influential nodes under the current network topology,this thesis proposes TMANET Influential Nodes Analysis Based on Impact Fators Evaluation(TINE)algorithm.In this thesis,TINE algotirhm is composed of two mechanisms: connectivity analysis and node importance evaluation.It considers the traffic flow in exsiting researches and reduces the time complexity when calculating the shortest routing hops matrix.The simulation results show that TINE algorithm has a better recognition effect than the three exsiting algorithms,thus improving the efficiency of identifying influential nodes in TMANET.