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International Research Journal of Engineering and Technology
Security is a major challenge in Mobile Ad hoc Network (MANET) due to their features of dynamically changing topologies, frequent host movement, Multi-hop wireless links and lack of clear line of defense. Protecting the network layer of a MANET from malicious attacks is an important and challenging issue. This paper analyzes the black hole and denial of service attack which is very severe type of possible attacks in Mobile Ad hoc Networks (MANETs). In a black hole attack, malicious nodesfatcat:zq7vzrdckja3lgvonbj563wlji