基于FPGA的Gigabit入侵检测系统设计与实现

随着网络带宽的增长,基于软件的入侵检测系统已不能适应千兆网络安全的需求。本文基于FPGA实现了千兆网入侵检测系统,其中的流量捕获、数据包解析、规则集模式匹配等计算密集的任务模块由FPGA中的高速运算逻辑实现,而人机交互部分由嵌入式系统实现。测试结果显示,系统在1Gbps最小包压力流量下进行数据包分析与检测时,可以达到0丢包率。

Design and Implementation of Gigabit NIDS Based on FPGA

Traditional software-based network intrusion detection systems （NIDS） are becoming strained as network data-rate increases. A gigabit NIDS is implemented based on FPGA. The computationally intensive components of a NIDS such as stream capturing, packet resolving and pattern matching of rule set are implemented based on high-speed logic cells of FPGA. While human-machine interfacing module is implemented based on embedded system. Test shows that when working in pressing gigabit network, the system can achieve zero-loss rate.