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A distributed signature detection method for detecting intrusions in sensor systems.

Ilkyu Kim¹, Doohwan Oh, Myung Kuk Yoon

¹School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea. ilkyu.kim19@gmail.com

Sensors (Basel, Switzerland)

|March 27, 2013

Summary

This study introduces a new distributed intrusion detection system for wireless sensor networks. The novel approach enhances security efficiently on resource-constrained sensor nodes, significantly reducing data transmission.

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Area of Science:

Computer Science
Network Security
Wireless Sensor Networks

Background:

Wireless sensor networks (WSNs) are vulnerable to malicious attacks due to their deployment in open environments.
Existing intrusion detection systems (IDS) are often too resource-intensive for implementation on sensor nodes.

Purpose of the Study:

To develop a novel distributed network intrusion detection system (NIDS) suitable for resource-constrained sensor nodes.
To enhance the security of WSNs against malicious attacks without compromising node performance.

Main Methods:

A distributed NIDS based on a modified Wu-Manber algorithm was developed.
The algorithm was partitioned into two steps: one for sensor nodes and one for the base station.
The sensor node step was optimized for efficient performance with limited computational resources.

Main Results:

The proposed method achieved a significant speedup factor of 25.96.
Packet transmissions to the base station were reduced by 43.94% compared to previous methods.
Evaluations using random strings and actual intrusion signatures demonstrated performance improvements.

Conclusions:

The developed system offers efficient utilization of sensor nodes for intrusion detection.
The system provides a structural foundation for cooperative security mechanisms in WSNs.
This approach effectively addresses the challenge of implementing IDS on resource-limited sensor nodes.