01-08-2012, 01:41 PM
Fixing the replicated Nodes in mobile Sensor Networks
Fixing the replicated Nodes .pptx (Size: 365.73 KB / Downloads: 32)
INTRODUCTION :
Computer Networks is a collection of nodes interconnected by communication channels like physical connection through cables (wired network) or through air medium (wireless network) which facilitate resource and information sharing.
Wireless network is said to be Ad hoc because it doesn’t depend on the pre-existing infrastructure and each node plays a role of router and forwards the packet.
Mobile Ad hoc network has mobile nodes and changes its links frequently
ATTACKS IN MOBILE ADHOC NETWORKS
Wireless Networks are often unattended and hence prone to several kind of novel attacks
The mission-critical nature of sensor network applications implies that any compromise or loss of sensory resource due to a malicious attack launched by the adversary-class can cause significant damage to the entire network.
ATTACKS IN MOBILE ADHOC NETWORK
These attacks are severely vulnerable and have been classified as
Active Attacks
An active attack involves information interruption, modification, or fabrication, thereby disrupting the normal functionality of a MANET.
Passive Attacks
A passive attack obtains data exchanged in the network without disrupting the operations of communication.
REPLICATION NODE ATTACK
Replication node attack is one in which one or more nodes legitimately claim an identity of legitimate node and replicated in whole wireless networks
Reason for choosing this attack is that it can form the basis of a variety attacks such as routing attacks and link layer attacks etc. also called as denial of service attacks which affects availability of network.