A SIMPLE APPROACH TO DEFEND BLACKHOLE ATTACK IN MANETS

The interest in the field of Mobile Ad hoc Network (MANET) is growing since last few years because of its practical applications in mobile devices. MANET  is  particularly  vulnerable  to  security attacks  in  comparison  to  wired  network  or infrastructure-based  wireless  network  due  to  its fundamental characteristics such as the open medium, dynamic network topology, autonomous terminal, lack of centralized monitoring and management. In order to provide secure and good communication and   transmission,   researchers   have   worked specifically on the security issues in MANETs and many   secure   routing   protocols   and   security measures were proposed. The black hole attack is one of the most prominent security threats which disrupt the routing in Mobile Networks. The scope of this work is to understand the effects  of  Black  hole  attack  in  MANET and devise a strategy to mitigate the attack  for Ad-Hoc  on  Demand  Distance Vector (AODV) Routing Protocol in MANETs.