Mobile Adhoc Network (MANET) is a fast deployable wireless mobile network with minimal infrastructure requirements. In these networks, autonomous nodes may function as routers. Due to the mobility of MANET nodes, the network's topology is dynamic. Recent scientific emphasis has been placed on MANET security. Few MANET attacks have been discussed in the existing literature. Wired networks provide more security choices than wireless networks. Most routing protocols fail in a MANET with a malicious node. This research focuses on S-DSR, a novel hybrid secure routing system that guarantees the delivery and performance of packets across network nodes. This protocol leverages neighbor trust information to choose the most secure route for file transfer. This protocol is used by OMNET++. It offers a higher delivery rate and lower delay than AODV, AOMDV, and other similar protocols. MANETs, or mobile ad-hoc networks, will be used in the future communication protocols of industrial wireless networks. These protocols will decentralise the connection of smart devices. Due to the unidimensional nature of digital data, it is impossible to apply encryption methods indirectly. These publications are digital. To strengthen the privacy of ehealthcare MANETs, a safe, lightweight keyframe extraction technique is required. The purpose of this project is to develop a secure protocol for MANET wireless networks. This study proposes the use of chaotic cryptography to enhance the security of MANET Wireless networks. Using Modified Self-Adaptive Sailfish Optimization (MSA-SFO), it is possible to construct vital maps in a chaotic setting. This method produces secure key pairs.