Date Added: Oct 2011
A Mobile Ad-hoc NETwork (MANET) is a self-configuring infrastructureless network of mobile devices connected by wireless links. Protecting the network layer from malicious attacks is an important and challenging issue in both wired and wireless networks and the issue becomes even more challenging in the case of MANET. In this paper, the authors propose a solution of Triple Umpiring System (TUS) that provides security for routing and data forwarding operations. In their system each node in the path from source to destination has dual roles to perform: packet forwarding and umpiring. In the umpiring role, each node in the path closely monitors the behavior of its succeeding node and if any misbehavior is noticed immediately flags off the guilty node.