This document discusses providing security against distributed denial of service (DDOS) attacks in mobile ad hoc networks. It begins by introducing mobile ad hoc networks and some of their security vulnerabilities. It then discusses different types of attacks against MANETs, including black hole attacks, wormhole attacks, denial of service attacks, and distributed denial of service attacks. It proposes using an intrusion detection system to detect attacks and block attacking nodes. Simulation results are discussed to analyze the effectiveness of detection and mitigation techniques against DDOS attacks in terms of network performance metrics. The conclusion is that implementing queue management algorithms in network routers can help protect users during DDOS attacks by guaranteeing a certain level of bandwidth.