A novel challenge & response scheme against selective forwarding attacks in MANETs

A selective forwarding attack is a notorious security problem in MANET environments. The attacking method can seriously cause a failure in MANET transmission. So, several previous schemes have proposed to solve the problem. However, all of the previous schemes still have some drawbacks. Hence, in this paper, we have designed a new challenge and response scheme to detect the selective forwarding attack. The prototype of our design has also been implemented on CORE emulator, and been experimented on. The experimental results have demonstrated that our new scheme can effectively identify the selective forwarding attacker.