  A Mobile Ad hoc Network can be said as a collection of mobile nodes, which
builds a dynamic topology and a resource constrained network. Due to dynamic
nature routing is challenging in MANET. In Mobile Ad hoc Networks different
type of attack is possible. By manipulation in routing and attacks against data
are reasoned by malicious nodes. MANETs are susceptible to various attacks from
selfish nodes. To defeat those problems security is demanded for preventing
node from various attacks. Metaheuristic techniques are used for addressing a
problem found in ad hoc networks such as routing, security and optimization. A
lot of research has been carried out for secure routing process with
metaheuristic approaches. In this paper, we present survey of metaheuristic
approach to improve routing process by enhancing the security and optimization
among different nodes in mobile ad hoc networks.
