  The emerging need for mobile ad hoc networks and secured data transmission
phase is of crucial importance depending upon the environments like military.
In this paper, a new way to improve the reliability of message transmission is
presented. In the open collaborative MANET environment, any node can
maliciously or selfishly disrupt and deny communication of other nodes. Dynamic
changing topology makes it hard to determine the adversary nodes that affect
the communication in MANET. An SMT protocol provides a way to secure message
transmission by dispersing the message among several paths with minimal
redundancy. The multiple routes selected are known as APS -Active Path Set.
This paper describes a technique for fault discovery process to identify
Byzantine failures which include nodes that drop, modify, or mis-route packets
in an attempt to disrupt the routing service. An adaptive probing technique
detects a malicious link through binary search and according to the nodes
behavior, these links are avoided in the active path by multiplicatively
increasing their weights. The proposed scheme provides secure communication
even with increased number of adversaries.
