A New Approach for Prevention of Malicious Attack in Post Disaster Using Delay Tolerant Network

Natural disasters still have a crippling effect on our infrastructure notwithstanding society's development. Communication systems, the backbone of our network, sustain the most damage during such crises. When it comes to setting up working communication systems, volunteers working on disaster relief missions face enormous obstacles because of the deteriorating communication infrastructure and extended power outages. Smartphones have become essential tools because they may create a peer-to-peer network, in opportunistic way also called as a Delay Tolerant Network (DTN), through Bluetooth or Wi-Fi connections in a latency mode, which makes communication easier in post-disaster situations. Nevertheless, nodes in this network can act strangely, failing to create routes or send data to other nodes, which would hinder the functioning of the network as a whole. Malicious nodes are those that behave in this way. They have the ability to either deny or destroy messages, which can cause serious disruptions. The performance of the network may be further complicated by some nodes displaying partial malicious activity, which causes interference on a selective basis. In response to these difficulties, this work suggests a novel technique for identifying and mitigating the effects of malicious nodes coordinating assaults inside DTNs. Through simulations with the Opportunistic Network Environment (ONE) simulator, the efficacy of the scheme was assessed, demonstrating its ability to reduce the disruptive impact of malicious nodes on network operations. This suggested method shows promise in strengthening DTNs against malevolent attacks and promoting more dependable communication infrastructures in places affected by disasters.