A MANET is a form of the wireless network among the mobile, wireless nodes. The presence of various significant attributes in MANET like end to end communications, dynamic topology and simple setup, leads to difficulties like routing, security, and clustering. Network security is an important aspect for both wired and wireless communication. This paper, provide a detail review on different security attacks over the MANETs. Further discussion is carried out by providing of prior solutions to overcome the security attacks and gives a bench mark for future study. An extensive survey of existing researches towards security in MANET is addressed. Later on, a research gap in current state of art in MANET security is discussed. Especially, this survey study mainly focus on security problems, challenges and solution strategies for security concerns in mobile ad-hoc networks.
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