Disaster management and emergency response mechanisms are coming of age post 9/11. Paper based triaging and evacuation is slowly being replaced with much advanced mechanisms using remote clients (Laptops, Thin clients, PDAs), RFiDs etc. This reflects a modern trend to deploy Information Technology (IT) in disaster management. IT elements provide a great a deal of flexibility and seamlessness in the communication of information. The information flowing is so critical that, loss of data is not at all acceptable. Loss of data would mean loss of critical medical information portraying the disaster scenario. This would amount to a wrong picture being painted of the disaster incident. This basic idea led to the motivation of DiNAR (Diagnosis of Network and Application Resource). The aim of DiNAR was to remotely monitor all the components of the deployed system infrastructure (Remote clients, Servers) and if there is a fault in the infrastructure (Hardware, Software or Communication) DiNAR captures the fault alarm and do an event correlation to find the source of the problem. The biggest challenge that lies here is the fact that the entities we are trying to monitor are scattered around in the Internet. Traditional network management techniques always assume that the network is within administrative control and every device we monitor is easily reachable on demand. But the ad-hoc scenario of deployment of disaster management systems makes this task non trivial. DiNAR has been designed with an aim to work with any application which has its infrastructure elements scattered in the Internet space. DIORAMA (A real time disaster management system) represents a new series of applications (especially in medical field) where the deployment of network infrastructure is scattered around with Internet being the backbone connector. Another such example is the Intel® Health Guide PHS6000 [1], which is used in patient monitoring in homes. This thesis work uses DIORAMA as a case study application used to prove the concept of DiNAR.