MANET is self-configuring and self-maintaining network composing of mobile nodes that communicate over wireless channel
Characteristics of MANET
ØCommunication via wireless.
ØDynamic network topology.
ØNodes can perform the roles of both hosts and routers.
ØEnergy constrained.
ØLimited security.
ØAutonomous, no infrastructure needed.
ØNo centralized controller
Two kinds of attack: passive eavesdropping and active interference.
These attacks could target a number of devices or services in MANETS such as wireless channels, routing protocols, high applications, or even security mechanisms themselves