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    System and method for maintaining protocol status information in a network device
    1.
    发明授权
    System and method for maintaining protocol status information in a network device 有权
    用于在网络设备中维护协议状态信息的系统和方法

    公开(公告)号：US07343485B1

    公开(公告)日：2008-03-11

    申请号：US10654388

    申请日：2003-09-03

    申请人： Dehua Huang ,  Adam J. Sweeney ,  Richard A. Johnson ,  Silviu Dobrota

    发明人： Dehua Huang ,  Adam J. Sweeney ,  Richard A. Johnson ,  Silviu Dobrota

    IPC分类号： H04L9/00

    CPC分类号： H04L63/0254

    摘要： A method may involve: maintaining protocol status information for a network protocol, where the protocol status information includes protocol information generated by a protocol server and network traffic information indicative of how messages are conveyed from the protocol client to a network, and updating the protocol status information in response to intercepting a protocol message being conveyed between a protocol client and a protocol server. For example, the network protocol can be DHCP (Dynamic Host Configuration Protocol) and the protocol status information can be updated to include an IP (Internet Protocol) address assigned to the protocol client by the protocol server in the protocol message. Such a method may inhibit the misuse of one or more network protocols and/or attacks on protocol servers.

    摘要翻译： 一种方法可以包括：维护网络协议的协议状态信息，其中协议状态信息包括由协议服务器生成的协议信息和指示消息如何从协议客户端传送到网络的网络业务信息，以及更新协议状态 响应于拦截在协议客户端和协议服务器之间传送的协议消息的信息。 例如，网络协议可以是DHCP（动态主机配置协议），并且可以更新协议状态信息以包括由协议服务器在协议消息中分配给协议客户端的IP（因特网协议）地址。 这种方法可能会阻止对协议服务器的一个或多个网络协议和/或攻击的误用。

    System and method for filtering network traffic
    2.
    发明授权
    System and method for filtering network traffic 有权
    过滤网络流量的系统和方法

    公开(公告)号：US08788823B1

    公开(公告)日：2014-07-22

    申请号：US10971523

    申请日：2004-10-22

    申请人： Dehua Huang ,  Adam J. Sweeney ,  Pradeep S. Sudame ,  Silviu Dobrota ,  Premkumar Jonnala

    发明人： Dehua Huang ,  Adam J. Sweeney ,  Pradeep S. Sudame ,  Silviu Dobrota ,  Premkumar Jonnala

    IPC分类号： H04L9/32

    CPC分类号： H04L63/10 ,  H04L63/0263

    摘要： Protocol status information is used to perform traffic filtering by dropping messages that are not consistent with the protocol status information. In one embodiment, a method involves comparing message information and protocol status information. The message information is associated with a first message. The protocol status information is obtained in response to one or more second messages, which are conveyed according to a protocol used to assign network addresses to clients. The method also involves determining whether to discard the first message, based on an outcome of the comparison of the message information and the protocol status information. For example, it can be determined that the first message should be discarded, if the message information does not match the protocol status information.

    摘要翻译： 协议状态信息用于通过丢弃与协议状态信息不一致的消息来进行流量过滤。 在一个实施例中，一种方法包括比较消息信息和协议状态信息。 消息信息与第一消息相关联。 响应于根据用于向客户端分配网络地址的协议传送的一个或多个第二消息来获得协议状态信息。 该方法还包括基于消息信息和协议状态信息的比较的结果来确定是否丢弃第一消息。 例如，如果消息信息与协议状态信息不匹配，则可以确定第一消息应被丢弃。

    System and method for performing security actions for inter-layer binding protocol traffic
    3.
    发明授权
    System and method for performing security actions for inter-layer binding protocol traffic 有权
    为层间绑定协议流量执行安全动作的系统和方法

    公开(公告)号：US07551559B1

    公开(公告)日：2009-06-23

    申请号：US10971521

    申请日：2004-10-22

    申请人： Premkumar Jonnala ,  Adam J. Sweeney ,  Dehua Huang ,  Silviu Dobrota ,  Pradeep S. Sudame ,  Marco E. Foschiano

    发明人： Premkumar Jonnala ,  Adam J. Sweeney ,  Dehua Huang ,  Silviu Dobrota ,  Pradeep S. Sudame ,  Marco E. Foschiano

    IPC分类号： H04L5/12

    CPC分类号： H04L63/1466 ,  H04L63/1416

    摘要： Users are allowed to specify per-interface rate limits for inter-layer binding protocol traffic. If the user-specified rate limit is exceeded on a given interface, inter-layer binding protocol messages received via that interface are caused to be dropped (e.g., by selectively dropping ILBP messages, or by simply shutting down the interface). If the rate is not exceeded, inter-layer binding protocol messages received via that interface can be validated (e.g., by comparing an inter-layer binding included in the body of an inter-layer binding protocol message to protocol status information obtained by snooping protocol messages). If the inter-layer binding does not match the protocol status information, the inter-layer binding protocol message is dropped. If a match is found, the inter-layer binding protocol message is allowed to be forwarded normally. Such systems and methods may be used to inhibit various undesirable network behavior, such as man-in-the-middle attacks.

    摘要翻译： 允许用户为层间绑定协议流量指定每接口速率限制。 如果在给定接口上超过用户指定的速率限制，则会导致通过该接口接收到的层间绑定协议消息（例如，通过选择性地删除ILBP消息，或简单地关闭接口）。 如果不超过该速率，则可以验证通过该接口接收的层间绑定协议消息（例如，通过将层间绑定协议消息正文中包含的层间绑定与通过侦听协议获得的协议状态信息进行比较 消息）。 如果层间绑定与协议状态信息不符，则删除层间绑定协议消息。 如果发现匹配，则允许层间绑定协议消息正常转发。 这样的系统和方法可以用于抑制各种不期望的网络行为，例如中间人攻击。

    Carbon nanotube underwater acoustic thermophone
    4.
    发明授权
    Carbon nanotube underwater acoustic thermophone 有权

    公开(公告)号：US09838803B1

    公开(公告)日：2017-12-05

    申请号：US15273817

    申请日：2016-09-23

    申请人： Thomas R Howarth ,  Dehua Huang

    发明人： Thomas R Howarth ,  Dehua Huang

    IPC分类号： G01S7/521 ,  H04R23/00

    CPC分类号： H04R23/002 ,  G01S7/521 ,  H04R2201/028 ,  H04R2307/023

    摘要： A carbon nanotube thermophone is provided. The thermophone includes high temperature rated shells as protective walls as the top and bottom housing of the thermophone with carbon nanotube sheets affixed between the shells. The shells act as acoustic windows that match the surrounding frequency and acoustic radiation medium. A high temperature rated sealant gasket is used to enclose the shells of the thermophone where gas holes are inserted for interior heavy gas filling. The acoustic resonant frequency is defined by the dimensions of the housing of the thermophone and the sound speed of the filled heavy gas. Each carbon nanotube sheet has an electrode at both ends. Multiple carbon nanotube sheets can electrically tune the impedance to match a driving amplifier impedance load.

    Nonlinear techniques for pressure vector acoustic sensor array synthesis
    7.
    发明授权
    Nonlinear techniques for pressure vector acoustic sensor array synthesis 失效
    压力矢量声传感器阵列合成的非线性技术

    公开(公告)号：US07274622B1

    公开(公告)日：2007-09-25

    申请号：US11136764

    申请日：2005-05-23

    申请人： Dehua Huang ,  Roy C. Elswick

    发明人： Dehua Huang ,  Roy C. Elswick

    IPC分类号： G01S15/00

    CPC分类号： G01S3/8006

    摘要： The present invention presents a method for use with an acoustic sensor array comprised of a number of pressure-vector sensors capable of sensing the acoustic scalar field and acoustic vector field of an acoustic wave. The method is a signal processing technique that utilizes nonlinear processing of pressure-vector sensor signals in the acoustic sensor array. The method involves the steps of receiving the sensor output values, processing the output values using a non-linear algorithm to create a mathematical series of values, transforming the series, applying weighting to the series and performing a summation of the values in the series to calculate the array directivity response. The array directivity response can then be further processed where the array is part of a sonar system.

    摘要翻译： 本发明提供了一种与声传感器阵列一起使用的方法，所述声传感器阵列包括能够感测声波的声标量场和声矢场的多个压力矢量传感器。 该方法是利用声传感器阵列中的压力矢量传感器信号的非线性处理的信号处理技术。 该方法包括以下步骤：接收传感器输出值，使用非线性算法处理输出值以创建数学系列的值，变换系列，对系列应用加权并执行该系列中的值的求和 计算阵列方向性响应。 然后可以进一步处理阵列方向性响应，其中阵列是声纳系统的一部分。