A Mobile Ad-hoc NETwork (MANET) is gathering of mobile nodes which are design to converse each other without fix transportation and central coordination. Wireless networks are becoming more and more ubiquitous in recent years, ranging from digital cellular telephony up to satellite broadcasting. Since in the MANET, routing protocols have no security mechanism. They are designed only to provide correct routing and have ability to adjust their dynamic changing condition. With the increasing demand and penetration of wireless services, users of wireless networks now expect Quality of Service (QoS) and performance comparable to what is available from fixed networks.