Managing a DDoS attack
    75.
    发明授权

    公开(公告)号:US09633202B2

    公开(公告)日:2017-04-25

    申请号:US13854594

    申请日:2013-04-01

    Abstract: A method, system, and/or computer program product manages a distributed denial of service attack in a multiprocessor environment. A determination is made of (a) a first upper threshold for a normal number of packets from the multiprocessor environment to multiple destination addresses, (b) a second upper threshold for a normal ratio of the packets from the multiprocessor environment to a single destination address compared to the packets from the multiprocessor environment to the multiple destination addresses, and (c) a third upper threshold for a normal ratio of packets from the multiprocessor environment to a single port at a single destination address compared to packets from the multiprocessor environment to the multiple destination addresses. In response to the first and second thresholds being exceeded, a specific port is monitored to determine if the third upper threshold is being exceeded at that port, thus indicating an apparent distributed denial of service attack.

    Bus traffic profiling
    79.
    发明授权

    公开(公告)号:US09619358B1

    公开(公告)日:2017-04-11

    申请号:US14060499

    申请日:2013-10-22

    Abstract: Methods and systems for analyzing bus traffic in a target device, such as a system on-a-chip (SOC) comprises capturing a processor event and generating an interrupt based on a threshold associated with the processor event. Based on at least the interrupt, a instruction pointer associated with the processor event that generated the interrupt is identified. An instruction analyzer identifies a memory address of the instruction associated with the processor event that generated the interrupt. At least the processor event and a associated instruction information are collected by a sample collector and transferred to a host for performance profiling.

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