Conference Proceedings

Strategic Alert Throttling for Intrusion Detection Systems

Gianni Tedesco, Uwe Aickelin

Proceedings of The 4th WSEAS International Conference on Information Security | WSEAS | Published : 2005


Network intrusion detection systems are themselves becoming targets of attackers. Alert flood attacks may be used to conceal malicious activity by hiding it among a deluge of false alerts sent by the attacker. Although these types of attacks are very hard to stop completely, our aim is to present techniques that improve alert throughput and capacity to such an extent that the resources required to successfully mount the attack become prohibitive. The key idea presented is to combine a token bucket filter with a realtime correlation algorithm. The proposed algorithm throttles alert output from the IDS when an attack is detected. The attack graph used in the correlation algorithm is used to ..

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University of Melbourne Researchers