Date Added: Dec 2012
Security is an essential service for wired and wireless network communications. The success of Mobile Ad hoc NETworks (MANET) mainly depends on people's confidence in its security. In a MANET, a collection of mobile hosts with wireless network interfaces form a network without the aid of any fixed infrastructure or centralized administration. The characteristics of MANET pose challenges and opportunities in achieving security goals, such as confidentiality, authentication, integrity, availability, access control, and non-repudiation. There are a wide variety of attacks that target the weakness of MANET, and Black-hole attack and Denial of Service attack (DOS) are the most prominent among this. Most of the research is focused on detect and how avoid these attacks by compromising on the performance of the network.