Efficient payload signature structure for performance improvement of traffic identification

The traffic identification is a preliminary and essential step for stable network service provision and efficient network resource management. While a number of identification methods have been introduced in literature, the payload signature-based identification method shows the highest performance in terms of accuracy, completeness, and practicality. However, the payload signature-based method´s processing speed is much slower than other identification method such as header-based and statistical methods. In this paper, we first classifies signatures by matching type based on range, order, and direction of packet in a flow when each signature matches to payload. By using this classification, we suggest a novel method to improve processing speed of payload signature-based identification by reducing searching space.