Collaborative Intrusion Detection Networks (CIDN) are usually composed by a set of nodes working together to detect distributed intrusions that cannot be easily recognized with traditional intrusion detection architectures. In this approach every node could potentially collaborate to provide its vision of the system and report the alarms being detected at the network, service and/or application levels. This approach includes considering mobile nodes that will be entering and leaving the network in an ad hoc manner. However, for this alert information to be useful in the context of CIDN networks, certain trust and reputation mechanisms determining the credibility of a particular mobile node, and the alerts it provides, are needed. This is the main objective of this paper, where an inter-domain trust and reputation model, together with an architecture for inter-domain collaboration, are presented with the main aim of improving the detection accuracy in CIDN systems while users move from one security domain to another.

This work would not have been possible without the inestimable contribution of:

• Manuel Gil Pérez
• Gregorio Martínez Pérez
• Antonio F. Gómez Skarmeta

Manuel Gil Pérez, Félix Gómez Mármol, Gregorio Martínez Pérez, Antonio F. Gómez Skarmeta, «Mobility in Collaborative Alert Systems: Building Trust through Reputation«, IFIP Networking 2011 Conference, Workshop on Wireless Cooperative Network Security (WCNS), Valencia (Spain), 13/05/2011

• Website: Workshop on Wireless Cooperative Network Security (WCNS) in conjunction with the IFIP Networking 2011 Conference
• Date: 13/05/2011
• Venue: Computer Engineering School, Valencia (Spain)