Intrusion tolerance in Publish/Subscribe based MANET
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Public/Subscribe (PubSub) paradigm is a powerful abstraction for building distributed applications and message distribution networks, and seems to be well suited model for the type of communication which takes place at a tactical/mobile level in military operations. Because of the hostile environment such networks have to operate in, they have to have good information security properties, including intrusion tolerance. A successful intrusion in tactical command and control networks can have a substantial damage on the ongoing military operation, making it a highly valuable enemy target. Most previous work on information distribution in MANETs focuses on how to distribute the information and minimize the amount of data to be sent on the network, and not on security issues introduced by an intruder. During this master project we have performed an analysis of the intrusion tolerance of the PubSub based MANET, i.e. the capability of a system to fulfill its mission in a timely manner, even when the network is under different types of attacks. The analysis shows that the PubSub protocol is vulnerable to some attacks performed by an intruder in the network. To deal with those vulnerabilities we have proposed enhancements to the protocol to make it more robust and immune to these attacks. By implementing the proposed enhancements we show that the PubSub protocol can be made very robust against the different types of attacks studied in this thesis. These properties make the protocol suited for usage in communication networks which operate in hostile environments.