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11. 发明申请

US20090274144A1 Multi-Node and Multi-Call State Machine Profiling for Detecting SPIT 有权
标题翻译：用于检测SPIT的多节点和多呼叫状态机分析
公开(公告)号：US20090274144A1
公开(公告)日：2009-11-05
申请号：US12115199
申请日：2008-05-05
申请人： Sachin Garg , Navjot Singh , Akshay Adhikari , Yu-Sung Wu
发明人： Sachin Garg , Navjot Singh , Akshay Adhikari , Yu-Sung Wu
IPC分类号： H04L12/66
CPC分类号： H04L65/1079 , G06F21/51 , G06F21/56 , H04L63/1408 , H04L63/1416 , H04L63/1425 , H04L65/1006 , H04M7/006 , H04M7/0078
摘要： An apparatus and method for detecting potentially-improper call behavior (e.g., SPIT, etc.) are disclosed. The illustrative embodiment of the present invention is based on finite-state machines (FSMs) that represent the legal states and state transitions of communications protocols at nodes during Voice over Internet Protocol (VoIP) calls. In accordance with the illustrative embodiment, a library of FSM execution profiles associated with improper call behavior and a set of rules (or rule base) associated with improper FSM behavior over one or more calls are maintained. When the behavior of one or more finite-state machines during one or more calls matches either an execution profile in the library or a rule in the rule base, an alert is generated.
摘要翻译：公开了一种用于检测潜在不适当的呼叫行为（例如，SPIT等）的装置和方法。本发明的说明性实施例基于有限状态机（FSM），其表示在因特网协议语音（VoIP）呼叫期间节点处的通信协议的合法状态和状态转换。根据说明性实施例，维护与不正当呼叫行为相关联的FSM执行简档库和与一个或多个调用上的不正确FSM行为相关联的一组规则（或规则库）。当一个或多个调用期间一个或多个有限状态机的行为与库中的执行概要文件或规则库中的规则匹配时，将生成警报。

12. 发明申请

US20080148384A1 Embedded Firewall at a Telecommunications Endpoint 有权
标题翻译：嵌入式防火墙在电信端点
公开(公告)号：US20080148384A1
公开(公告)日：2008-06-19
申请号：US11610485
申请日：2006-12-13
申请人： Akshay Adhikari , Sachin Garg , Anjur Sundaresan Krishnakumar , Navjot Singh
发明人： Akshay Adhikari , Sachin Garg , Anjur Sundaresan Krishnakumar , Navjot Singh
IPC分类号： G06F17/00
CPC分类号： H04L63/0209 , H04L63/0263
摘要： A method is disclosed that enables the implementation of an embedded firewall at a telecommunications endpoint. In particular, the illustrative embodiment of the present invention addresses the relationship between the application, firewall engine, and packet-classification rules database that are all resident at the endpoint. In the variations of the illustrative embodiment that are described herein, the application: (i) directly communicates with the co-resident firewall engine such as through local message passing, (ii) shares memory with the firewall engine, and (iii) makes socket calls to the operating system that are intercepted by a middleware layer that subsequently modifies the rules database, depending on the socket call. The common thread to these techniques is that the application, firewall engine, and rules database are co-resident at the endpoint, which is advantageous in the implementation of the embedded firewall.
摘要翻译：公开了一种能够在电信端点实现嵌入式防火墙的方法。特别地，本发明的说明性实施例解决了所有驻留在端点的应用，防火墙引擎和分组分类规则数据库之间的关系。在本文描述的说明性实施例的变型中，应用：（i）直接与共驻防火墙引擎通信，例如通过本地消息传递，（ii）与防火墙引擎共享存储器，以及（iii）使套接字调用由中间件层拦截的操作系统，随后根据套接字调用修改规则数据库。这些技术的共同点是应用程序，防火墙引擎和规则数据库共同驻留在端点，这在嵌入式防火墙的实现方面是有利的。

13. 发明申请

US20060288411A1 System and method for mitigating denial of service attacks on communication appliances 审中-公开
标题翻译：减轻通信设备拒绝服务攻击的系统和方法
公开(公告)号：US20060288411A1
公开(公告)日：2006-12-21
申请号：US11157880
申请日：2005-06-21
申请人： Sachin Garg , Navjot Singh
发明人： Sachin Garg , Navjot Singh
IPC分类号： G06F12/14
CPC分类号： H04L63/0236 , H04L63/0254 , H04L63/0263 , H04L63/1458
摘要： A method for preventing or limiting the effects of Denial-of-Service attacks in a communication appliance having a packet-classification rule base which allows all legitimate packets to be forwarded to the communication appliance includes monitoring incoming packets to the communication appliance to determine whether conditions indicating a Denial-of-Service attack are present. If a Denial-of-Service attack is present, a rule base subset of the packet-classification rule base is selected from a plurality of rule base subsets based on a current one of a plurality of operating states of the communication appliance.
摘要翻译：一种防止或限制拒绝服务攻击在具有允许所有合法分组被转发到通信设备的分组分类规则库的通信设备中的效果的方法包括监视到通信设备的进入分组，以确定条件表示存在拒绝服务攻击。如果存在拒绝服务攻击，则基于通信设备的多个操作状态中的当前操作状态，从多个规则库子集中选择分组分类规则库的规则库子集。

14. 发明申请

US20050005152A1 Security vulnerability monitor 审中-公开
标题翻译：安全漏洞监控
公开(公告)号：US20050005152A1
公开(公告)日：2005-01-06
申请号：US10611264
申请日：2003-07-01
申请人： Navjot Singh , Timothy Tsai
发明人： Navjot Singh , Timothy Tsai
IPC分类号： G06F21/00 , H04L9/00
CPC分类号： G06F21/577 , G06F21/554
摘要： A method and apparatus for automatically determining whether a security vulnerability alert is relevant to a device (e.g., personal computer, server, personal digital assistant [PDA], etc.), and automatically retrieving the associated software patches for relevant alerts, are disclosed. The illustrative embodiment intelligently determines whether the software application specified by a security vulnerability alert is resident on the device, whether the version of the software application on the device matches that of the security vulnerability alert, and whether the device's hardware platform and operating system match those of the security vulnerability alert.
摘要翻译：公开了一种用于自动确定安全漏洞警报是否与设备（例如，个人计算机，服务器，个人数字助理[PDA]等）相关的方法和装置，以及自动检索相关警报的相关软件补丁。说明性实施例智能地确定由安全漏洞警报指定的软件应用程序是否驻留在设备上，设备上的软件应用程序的版本是否与安全漏洞警报的版本相匹配，以及设备的硬件平台和操作系统是否匹配的安全漏洞警报。

15. 发明授权

US06713532B2 Solid polymer dispersions and method for their preparation 失效
标题翻译：固体聚合物分散体及其制备方法
公开(公告)号：US06713532B2
公开(公告)日：2004-03-30
申请号：US10377353
申请日：2003-02-28
申请人： Navjot Singh , Joseph Michael Anostario
发明人： Navjot Singh , Joseph Michael Anostario
IPC分类号： C08J300
CPC分类号： C08J3/124 , C08J3/005 , C08J2383/04 , C08L69/00 , C08L71/02 , C08L83/04 , C08L101/00 , C08L83/00 , C08L2666/24 , C08L2666/14 , C08L2666/04
摘要： Solid blends of rubbery polymers and amorphous or crystalline polymers, said blends being free-flowing at temperatures lower than the glass transition temperature or crystalline melting temperature of the amorphous or crystalline polymer, are prepared by intimate mixing procedures. In general, said mixing conditions include high shear conditions sufficient to convert polymer A to dispersed particles coated with polymer B and produce a free-flowing powder blend.
摘要翻译：橡胶状聚合物和无定形或结晶聚合物的固体共混物，所述共混物在低于无定形或结晶聚合物的玻璃化转变温度或结晶熔融温度的温度下自由流动，通过紧密混合程序制备。通常，所述混合条件包括足以将聚合物A转化成涂覆有聚合物B的分散颗粒的高剪切条件，并产生自由流动的粉末混合物。

16. 发明授权

US06451954B1 Copolymer sealant compositions and method for making 有权
标题翻译：共聚物密封剂组合物及其制备方法
公开(公告)号：US06451954B1
公开(公告)日：2002-09-17
申请号：US09626768
申请日：2000-07-27
申请人： Navjot Singh , John Thomas Leman , John M. Whitney , Herman Otto Krabbenhoft
发明人： Navjot Singh , John Thomas Leman , John M. Whitney , Herman Otto Krabbenhoft
IPC分类号： C08G7724
CPC分类号： C08G77/52 , C08L83/10 , C08L2666/44
摘要： Condensation curable poly(fluoroorgano)siloxane-poly(silarylene)siloxane block copolymer compositions having a glass transition temperature not exceeding about −54° C. and excellent solvent resistance have been found useful as sealants. Polyalkoxysilylorgano compounds, such as 1,4-bis[trimethoxysilyl(ethyl)]benzene have been found to be effective as cross-linkers.
摘要翻译：玻璃化转变温度不超过约-54℃，耐溶剂性优异的缩合可固化聚（氟代有机）硅氧烷 - 聚（亚硅烷基）硅氧烷嵌段共聚物组合物已经被用作密封剂。已经发现多烷氧基甲硅烷基有机化合物如1,4-双[三甲氧基甲硅烷基（乙基）]苯作为交联剂是有效的。

17. 发明授权

US06389462B1 Method and apparatus for transparently directing requests for web objects to proxy caches 有权
公开(公告)号：US06389462B1
公开(公告)日：2002-05-14
申请号：US09212980
申请日：1998-12-16
申请人： Ariel Cohen , Sampath Rangarajan , Navjot Singh
发明人： Ariel Cohen , Sampath Rangarajan , Navjot Singh
IPC分类号： G06F1516
CPC分类号： H04L67/2804 , H04L29/06 , H04L29/12009 , H04L61/00 , H04L67/1002 , H04L67/1017 , H04L67/1019 , H04L67/1027 , H04L67/2814 , H04L69/16 , H04L69/161 , H04L69/165 , H04L69/166
摘要： In order to transparently redirect an HTTP connection request that is directed to an origin server (107) to a proxy cache (110-1), a proxy redirector (104) translates the destination address of packets directed to the origin server to the address of the proxy. During a handshaking procedure, a TCP connection is transparently established between the client (110-1) and the proxy cache. When the client transmits a GET request to what it thinks is the origin server, which request specifies the complete address of an object at that origin server that it wants a copy of, the proxy redirector modifies the complete address specified in that GET request before it is sent to the proxy cache. Specifically, the IP address of the origin server found in the destination field in the IP header of the one or more packets from the client containing the GET request is added by the proxy redirector as a prefix to the complete URL in the GET request to form an absolute URL. The proxy cache determines from that absolute URL whether it has the requested object stored in its cache. If it does, it sends the object back to the proxy redirector, which masquerades those packets as coming from the origin server by translating their destination address to the address of the client and their source address to that of the origin server. If the proxy does not have the requested object, a separate TCP connection is established between the proxy and the origin server from where the object is retrieved and then forwarded over the TCP connection between the client and the proxy. In order to account for the additional number of bytes in the GET request, an acknowledgement sequence number in packets returned from the proxy that logically follow receipt of the GET request are decremented by that number by the proxy redirector before being forwarded to the client. Similarly, a sequence number in packets transmitted by the client subsequent to the GET request are incremented by that number before being forwarded by the proxy redirector to the proxy cache.

18. 发明授权

US09736172B2 Signature-free intrusion detection 有权
公开(公告)号：US09736172B2
公开(公告)日：2017-08-15
申请号：US11854437
申请日：2007-09-12
申请人： Sachin Garg , Navjot Singh , Akshay Adhikari , Yu-Sung Wu
发明人： Sachin Garg , Navjot Singh , Akshay Adhikari , Yu-Sung Wu
IPC分类号： H04L29/06
CPC分类号： H04L63/1416 , H04L63/0254
摘要： An apparatus and method are disclosed for detecting intrusions in Voice over Internet Protocol systems, without the use of an attack signature database. In particular, the illustrative embodiment is based on the observation that some VoIP-related protocols (e.g., the Session Initiation Protocol [SIP], etc.) are simple enough to be represented by a finite-state machine (FSM) of compact size. A finite-state machine is maintained for each session/node/protocol combination, and any illegal state or state transition—which might be the result of a malicious attack—is flagged as a potential intrusion.

19. 发明授权

US09503488B2 System and method for virtual call hold 有权
标题翻译：用于虚拟呼叫保持的系统和方法
公开(公告)号：US09503488B2
公开(公告)日：2016-11-22
申请号：US13232661
申请日：2011-09-14
申请人： Jon L. Bentley , Anjur S. Krishnakumar , Parameshwaran Krishnan , Navjot Singh , Shalini Yajnik
发明人： Jon L. Bentley , Anjur S. Krishnakumar , Parameshwaran Krishnan , Navjot Singh , Shalini Yajnik
IPC分类号： H04L29/06 , H04M3/56 , H04N7/15
CPC分类号： H04L65/403 , H04L65/1083 , H04L65/1096 , H04M3/565 , H04M2203/253 , H04M2203/256 , H04M2203/258 , H04N7/15
摘要： Disclosed herein are systems, methods, and non-transitory computer-readable storage media for accomplishing a virtual call on hold. A client communication device, such as a telephone, smartphone, or computer, receives a notification of a communication session to which the user is invited, and establishes a relationship with the communication session. Alternatively, a server associated with the communication session can establish the relationship with the client communication device. Then, the communication device can present an indication of the relationship with the communication session for a duration of the communication session, such that the user can join the communication session at will via a communication channel, and such that the communication channel is not occupied by the communication session unless or until the user joins the communication session. The communication session can be a conference call, video conference, a multi-modal chat wherein multiple users communicate via different modalities.
摘要翻译：这里公开了用于完成保持的虚拟呼叫的系统，方法和非暂时的计算机可读存储介质。诸如电话，智能电话或计算机的客户端通信设备接收用户被邀请的通信会话的通知，并建立与通信会话的关系。或者，与通信会话相关联的服务器可以建立与客户端通信设备的关系。然后，通信设备可以在通信会话的持续时间内呈现与通信会话的关系的指示，使得用户可以经由通信信道随意加入通信会话，并且使得通信信道不被通信会话除非或直到用户加入通信会话。通信会话可以是电话会议，视频会议，多模式聊天，其中多个用户通过不同的模式进行通信。

20. 发明授权

US09292814B2 System and method for concurrent electronic conferences 有权
标题翻译：并行电子会议的系统和方法
公开(公告)号：US09292814B2
公开(公告)日：2016-03-22
申请号：US13426726
申请日：2012-03-22
申请人： Jon L. Bentley , Anjur S. Krishnakumar , Parameshwaran Krishnan , Navjot Singh , Shalini Yajnik , Kirak Hong
发明人： Jon L. Bentley , Anjur S. Krishnakumar , Parameshwaran Krishnan , Navjot Singh , Shalini Yajnik , Kirak Hong
IPC分类号： G06Q10/06 , G06Q10/10 , H04N7/15 , H04L12/18
CPC分类号： H04L65/403 , G06F17/30528 , G06F17/30867 , G06Q10/06311 , G06Q10/1095 , H04L12/1827 , H04N7/15
摘要： Method for scheduling and implementing an electronic meeting conducted among remotely-located users communicating with an agenda server, including: accepting a meeting agenda that includes a plurality of topics, a quorum, an identification of resources used by each topic, an identification of data used by each topic, and an identification of data produced by each topic; partitioning the meeting agenda into at least a first and second group of topics; searching for data dependencies between the first and second groups of topics; searching for resource dependencies between the first and second groups of topics; if data dependencies or resource dependencies are found between the first and second groups of topics, then repartitioning the meeting agenda until the data dependencies and resource dependencies between the first and second groups of topics are reduced below a predetermined dependency threshold; and concurrently scheduling and executing the first and second groups of topics.
摘要翻译：方法，用于在与议程服务器通信的远程位置用户之间进行电子会议，包括：接受包括多个主题的会议议程，法定人数，每个主题使用的资源标识，所使用的数据的标识由每个主题和每个主题产生的数据的识别; 将会议议程划分为至少第一组和第二组课题; 搜索第一组和第二组主题之间的数据依赖关系; 搜索第一组和第二组主题之间的资源依赖关系; 如果在第一组和第二组主题之间找到数据依赖性或资源依赖性，则重新分区会议议程，直到第一组和第二组主题之间的数据依赖性和资源依赖性降低到预定的依赖性阈值以下; 并且同时调度和执行第一组和第二组主题。

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