• K.RANGASWAMY
• P.BHARATH KUMAR

ABSTRACT Security is a major concern for safe communication between mobile nodes in an alien environment. In alien environments, attackers can bunch active and passive attacks against imperceptible routing in routing message and data packets. In this, we focus on significant security attacks in Mobile ad hoc networks. MANET has no clear immunity so; it is available to both legitimate users and malicious attackers. In the existence of malicious nodes, one of the main objectives in MANET is to design the robust security solution that can protect MANET from various routing attacks. However, these solutions are not correct for MANET resource constraints, i.e., battery power and limited bandwidth. Mobile ad-hoc network can operate in isolation or in coordination with a wired infrastructure. This flexibility along with their self organizing facilities is some of MANET's biggest strengths, as well as their biggest security vulnerabilities. In this paper different routing attacks, such as active (black hole, spoofing, wormhole, flooding,) and passive (traffic monitoring, traffic analysis, eavesdropping) are described. Black hole node or malicious node sends the Route Response (RREP) to the sender which having a shortest path to reach to the destination and when sender starts the communication with that black hole node, that node drops all packets. Now a day, there are many detection and prevention techniques available to protect the network form the black hole attack. This paper is shortly explains the detection techniques of the black hole attack in MANET.

MANET, DOS, AODV, Data Traffic, Attacks, Security

"A survey: Mobile Adhoc NETworks using Security Attacks in routing mechanism ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.203-211, December-2018, Available :http://www.jetir.org/papers/JETIR1812228.pdf

"A survey: Mobile Adhoc NETworks using Security Attacks in routing mechanism ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp203-211, December-2018, Available at : http://www.jetir.org/papers/JETIR1812228.pdf