Intrusion detection using a network processor and a parallel pattern detection engine
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    发明申请
    Intrusion detection using a network processor and a parallel pattern detection engine 有权
    使用网络处理器和并行模式检测引擎的入侵检测

    公开(公告)号:US20050154916A1

    公开(公告)日:2005-07-14

    申请号:US10756904

    申请日:2004-01-14

    IPC分类号: H04L9/00 H04L12/24 H04L29/06

    CPC分类号: H04L63/1416 H04L63/1441

    摘要: An intrusion detection system (IDS) comprises a network processor (NP) coupled to a memory unit for storing programs and data. The NP is also coupled to one or more parallel pattern detection engines (PPDE) which provide high speed parallel detection of patterns in an input data stream. Each PPDE comprises many processing units (PUs) each designed to store intrusion signatures as a sequence of data with selected operation codes. The PUs have configuration registers for selecting modes of pattern recognition. Each PU compares a byte at each clock cycle. If a sequence of bytes from the input pattern match a stored pattern, the identification of the PU detecting the pattern is outputted with any applicable comparison data. By storing intrusion signatures in many parallel PUs, the IDS can process network data at the NP processing speed. PUs may be cascaded to increase intrusion coverage or to detect long intrusion signatures.

    摘要翻译: 入侵检测系统(IDS)包括耦合到用于存储程序和数据的存储器单元的网络处理器(NP)。 NP还耦合到一个或多个并行模式检测引擎(PPDE),其提供对输入数据流中的模式的高速并行检测。 每个PPDE包括许多处理单元(PU),每个处理单元被设计为将入侵签名存储为具有所选操作码的数据序列。 PU具有用于选择模式识别模式的配置寄存器。 每个PU在每个时钟周期比较一个字节。 如果来自输入模式的字节序列与存储的模式匹配,则用任何适用的比较数据输出检测模式的PU的识别。 通过在多个并行PU中存储入侵签名,IDS可以以NP处理速度处理网络数据。 PU可以级联以增加入侵覆盖或检测长入侵签名。