A Comparison Paper on Detecting Black Hole Nodes in Manets by Enhancing CBDS Scheme

Mobile ad-hoc networks allow easy, fast and inexpensive network operation. An ad-hoc network is a collection of mobile nodes that dynamically form a temporary network and are infrastructure less. Nodes of the network communicate with each other directly or through intermediate nodes. Routing protocols are requisite to discover a best possible path between source and destination node. Mobile Ad-hoc Networks have many security vulnerabilities due to which ad-hoc networks are isolated to attacks of the malicious nodes. One of these attacks is the Black Hole attack against network veracity. During this attack, nodes absorb all data packets in the network. And the data packets do not reach to the destination which results loss of data. This paper compares the corresponding simulation result in Ns2.35 and demonstrates that our technique not only prevents black /gray hole but also improves performance.