The present book discusses the different type of security threats on MANET's, its effect on communication along with the proposed solutions to detect and remove the threat. The plus point of this book is abundantly used images along with detailed protocols. This book will provide a comparative study of different networking protocols. NS3 network simulator is used to simulate the results. This book is designed to fulfill the needs of all the beginning aspirants of security in Networking. It will serve as a textbook for the students of Engineering (BE/B.Tech), Computer Applications (BCA/MCA), Computer Science (B.Sc/M.Sc), and Diploma Programs with no prior programming experience.