A collaborative framework for intrusion detection in mobile networks

Mobile devices are becoming the most popular way of connection, but protocols supporting mobility represent a serious source of concerns because their initial design did not enforce strong security. This paper introduces a novel class of stealth network attacks, called mobility-based evasion, where an attacker splits a malicious payload in such a way that no part can be recognized by existing defensive mechanisms including the most modern network intrusion detection systems operating in stateful mode. We propose an original cooperative framework for intrusion detection that can prevent mobility-based evasion. The viability and performance of the proposed solution is shown through a prototype applied to Mobile IPv4, Mobile IPv6 and WiFi protocols.