Evaluation of Trust and Revocation of Malicious Nodes in MANETs

Mobile adhoc network (MANET) is formed by a set of mobile hosts which communicate via radio waves within the transmission range. Manets are wireless communication where nodes can freely move within the network. Manets operate in the absence of base station and central access point. Applications of Manets are different in various areas. Manets are famous because of its self configuring, wireless and dispersed. The main factor in Manet is its security. The features of Manets are actually nontrivial problems to the security design in Manets. Manets are vulnerable to attacks due to the absence of the centralized control, dynamic topologies. Hence it’s very important to protect Manets from various types of attacks and revocate the certificate of the malicious nodes

Worm Epidemics in Wireless Adhoc Networks

A dramatic increase in the number of computing devices with wireless communication capability has resulted in the emergence of a new class of computer worms which specifically target such devices. The most striking feature of these worms is that they do not require Internet connectivity for their propagation but can spread directly from device to device using a short-range radio communication technology, such as WiFi or Bluetooth. In this paper, we develop a new model for epidemic spreading of these worms and investigate their spreading in wireless ad hoc networks via extensive Monte Carlo simulations. Our studies show that the threshold behaviour and dynamics of worm epidemics in these networks are greatly affected by a combination of spatial and temporal correlations which characterize these networks, and are significantly different from the previously studied epidemics in the Internet