Protection of mobile agent and its itinerary from malicious host

With the advancement of communication technology, network infrastructure has been shifting towards distributed paradigm from centralized architecture which creates many tribulations like low bandwidth, high network load, high network latency, low performance etc. Mobile agent, a new computational paradigm has ability to solve aforementioned problems up to a great extent. Mobile agents are the objects oriented software codes, which have the characteristics like intelligence, autonomy, responsiveness, communication ability and adaptability that build them more advantageous than any other mechanism like client server in network infrastructure. Nevertheless various applications and advantages are offered by mobile agents; but these are not sufficient for its acceptance on a wider scale because of inherent security risk. So, for the deployment of agent based technology, the inherent lacunae of security is require to be sorted out. This paper presents multilevel security architecture for solving the challenges of malicious host problems. Current proposal aims to multiphase security model for providing security to agent's code, data and itinerary which is worth considering in a single multi phase approach along with maintaining of flexibility and autonomy features of mobile agents. The proposed solution is viable under the assumption of established PKI infrastructure and free roaming agents with fixed itinerary list of nodes.