Mobile Ad hoc NETworks (MANETs) use unknown routing protocols that hide from view node identities and routes from outside observers in order to provide ambiguity protection. As the authors know existing unknown routing protocols depends on hop-by-hop encryption and redundant traffic. It generates high cost and cannot provide full ambiguity protection to packet sources, destination and routes. Because of high cost the essential resource restriction problem exists in MANETs mainly in multimedia wireless applications. To provide high ambiguity protection at low cost, they offer an Anonymous Location-based Efficient RouTing protocol (ALERT) that provides security and energy management in location based routing of MANETs.