A Overview of Anonymous Routing Protocols to Overcome Passive Attack in Mobile Ad-Hoc Networks

With the wide use of mobile devices in mobile ad hoc networks, maintaining anonymity is becoming an increasingly important issue. Routing in wireless ad hoc networks are vulnerable to traffic analysis, spoofing and denial of service attacks due to open wireless medium communications. Anonymity mechanisms in ad hoc networks are critical security measures used to mitigate these problems by concealing identification information, such as those of nodes, links, traffic flows, paths and network topology information from harmful attackers. These features of mobile ad-hoc networks can prone it to malicious traffic analysis.