Abstract

The wireless ad hoc network (WANET) is a type of wireless network in which some nodes are decentralized as well as self-organized in a wireless local area network. In recent years, insider threats increasingly damage the works not only in computer information systems, but also many wireless communications systems e.g. WANETs. We must take into consideration that the majority of insider threats come from users who are fully authorized to use theWANET systems they are accessing. Due to these kinds of situations, a Cooperative Trust Bit-Map Routing Protocol (CTBRP) using an n-Bits Cooperative Trust Bit-Map Routing Table (n-CTBRT) is proposed to be used against insider threats in WANETs. This CTBRP proposes using a Generic Algorithm in this paper for establishing cooperative evaluating trust values. Each node evaluates her/his neighboring nodes in order to reduce the untrusted routes. Thus, it could reduce the damage away from the insider threats in a WANET. This approach is one of behavioral-based techniques. In fact, the compromised nodes or selfish nodes or non-honest nodes will be evaluated as having low trust values or scores. Once a relay node had been compromised or damaged by insider threats in this WANET, the communication system will use this approach to find out about it according to its abnormal behaviors. Therefore, the proposed routing protocol in the WANET could evaluate the wrongful behaviors of the compromised node or a selfish node efficiently in order to prevent InTs.