Black hole attack and their counter measure based on trust management in manet: A survey

Mobile ad-hoc network (MANET) is an autonomous system connected by mobile nodes with wireless links. Due to absence of infrastructure, MANET is used in various applications, such as battlefield, business applications, and remote areas. As, communication among the nodes is through the insecure wireless link, security is very important issue for this type of networks. MANET is vulnerable to attacks such as Black hole attack, Gray hole attack, wormhole attack, Sybil attack, and Route table modification attack. Black hole attack has serious impact on routing and delivery ratio of packets. To overcome Black hole attack, a mechanisms such as trust based routing, intrusion detection system, sequence number comparison and Data Routing Information table (DRI) has been proposed. Trust based On Demand routing mechanism identifies and decreases the hazards by malicious node in the path. This paper provides a survey of preventing and identifying Black hole attack using trust management mechanism in MANET.