05-05-2012, 03:05 PM
AODV and DSR Routing Protocols Under Wormhole Attack Environment
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Introduction
MANET is a wireless network consisting of a collection of communication nodes.
Several technical challenges regarding deployment of a MANET such as network scalability , communication stability, energy consumption, security and quality of services.
Detailed discusses on AODV.
Attack on AODV and DSR .
Wormhole attack on AODA & DSR and also avoiding technique wormhole attack.
Classification of Ad-Hoc Networks
On the basis of the number of hopes:
Single hop ad-hoc networks
Multihop ad-hoc networks
Design Issues and Constraints
Infrastructure less
Dynamically changing network topologies
Variation in link and node capabilities
Energy constrained operation
Network security
Network scalability
Quality of services
Dynamic Source Routing (DSR)
Based on the concept of source routing
Every generated data packet carries the rout information in its packet header.
When node S wants to send a packet to node D, but does not know a route to D, node S initiates a route discovery.
Source node S floods Route Request (RREQ)
Each node appends own identifier when forwarding RREQ
Destination node D reply via reverse path through which RREQ packet was transmitted.