Securing AODV for Defending Sybil Attack in MANET

Security is of paramount concern in any ad-hoc network. In Mobile Ad-hoc networks (MANETs), mobility of the nodes poses a problem for providing security services. The ad-hoc network is more vulnerable to attacks, since it uses wireless communication link between the mobile nodes. Sybil Attack is a spoofing attack, where a malicious node illegitimately creates multiple fake identities (called the Sybil nodes) to impersonate as normal nodes. It is observed that most of the existing protocols fail to defend against Sybil attack. The existing static & dynamic routing protocols like ADOV, DSR, OLSR needs to be updated for providing better security against the issues. This work focus to improve the security issues in AODV routing protocol to detect and prevent Sybil attack