Research on range matching for wire-speed hardware NIDS

CHEN Shu-hui; SUN Zhi-gang; SU Jin-shu

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Research on range matching for wire-speed hardware NIDS

更新时间：2024-10-14

- Research on range matching for wire-speed hardware NIDS
- Issue 10, Pages: 7-12(2006)
- 作者机构：
  
  1. 国防科学技术大学计算机学院
  2. 国防科学技术大学计算机学院,湖南,长沙,410073
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP393.08
- Published：2006
- 稿件说明：
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CHEN Shu-hui, SUN Zhi-gang, SU Jin-shu. Research on range matching for wire-speed hardware NIDS[J]. 2006, (10): 7-12.
DOI：

CHEN Shu-hui, SUN Zhi-gang, SU Jin-shu. Research on range matching for wire-speed hardware NIDS[J]. 2006, (10): 7-12. DOI：

摘要

为解决硬件入侵检测系统的规则匹配问题

提出了一种降低存储资源的范围匹配算法LRC-RM

将规则中的端口范围映射成压缩位向量

并将位向量组织成扩展平衡二叉树

然后对实现的系统进行了评估。采用该技术的网络入侵检测系统

使用的存储空间只有已有算法的1%

有利于硬件在片内完成查找过程

可实现端口范围在OC192链路的线速匹配。

Abstract

To solve the rule matching problem of hardware NIDS

a range matching algorithm LRC-RM was proposed

with more efficient memory utilization.The approach mapped the port range into a compressed bit vector and organized the bit vectors as an extended balanced binary tree.Experiments were employed to show that NIDS using this approach can perform wire-speed range matching for OC-192 links

while saving 99% memory resource comparing to the existing methods.The algorithm is easy to be implemented within a chip without additional RAM.

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