An efficient network intrusion detection

  • Authors:
  • Chia-Mei Chen;Ya-Lin Chen;Hsiao-Chung Lin

  • Affiliations:
  • Department of Information Management, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;Department of Information Management, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;Department of Information Management, National Sun Yat-Sen University, Kaohsiung 804, Taiwan

  • Venue:
  • Computer Communications
  • Year:
  • 2010

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Abstract

Exploit code based on system vulnerability is often used by attacker. Such exploit program often sends attack packets in the first few packets. A Lightweight Network Intrusion Detection system (LNID) is proposed for detecting such attacks on Telnet traffic. It characterizes normal traffic behavior and computes the anomaly score of a packet based on the deviation from the normal behavior. Instead of processing all traffic packets, an efficient filtering scheme proposed in the study can reduce system workload and only 0.3% of the original traffic volume is examined for anomaly. According to the performance comparisons with other network-based IDS, LNID is the most efficient on detection rate and workload reduction.