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    • 3. 发明申请
    • Sequence number based TCP session proxy
    • 基于序列号的TCP会话代理
    • US20070283429A1
    • 2007-12-06
    • US11442774
    • 2006-05-30
    • Lee ChenRonald Wai Lun SzetoShih-Tsung Hwang
    • Lee ChenRonald Wai Lun SzetoShih-Tsung Hwang
    • G06F15/16
    • H04L63/0254H04L63/1458
    • In a computer communication network including a firewall which protects a secured host against attack from outside computers, the host communicating with an outside computer, through the firewall, via data packets which include byte sequence numbers. In a communication between the host and computer in which one of them acts as a source and the other as a destination for the communication, a sequence number offset is derived by the firewall which characterizes the byte sequence number received from the source and the byte sequence number the firewall will provide to the destination for that communication. In a communication received from the source, the firewall adds the offset to byte sequence numbers in a packet passing between the source and destination, in order to determine the byte sequence numbers it will provide to the destination. Thus, proper sequence numbers can be provided to both locations, without the firewall having to restructure packets. This speeds communication between the source and destination and substantially reduces the commitment of processing and storage resources.
    • 在包括保护安全主机免受外部计算机攻击的防火墙的计算机通信网络中,主机通过防火墙通过包括字节序列号的数据分组与外部计算机进行通信。 在主机和计算机之间的通信中,其中一个作为源,另一个作为通信的目的地,由防火墙导出序列号偏移,其表征从源接收的字节序列号和字节序列 防火墙将提供给该通信的目的地的号码。 在从源接收的通信中,防火墙将偏移量添加到源和目的地之间的数据包中的字节序列号,以确定其将提供给目标的字节序列号。 因此,可以向两个位置提供适当的序列号,而防火墙不必重新组织数据包。 这加快了源和目的地之间的通信,并大大减少了处理和存储资源的承诺。
    • 6. 发明授权
    • Method and system for intelligently forwarding multicast packets
    • 智能转发组播报文的方法和系统
    • US09112715B2
    • 2015-08-18
    • US12765765
    • 2010-04-22
    • Nitin JainLee ChenEarl FergusonMin Zhu
    • Nitin JainLee ChenEarl FergusonMin Zhu
    • H04L12/18
    • H04L12/1886
    • A routing system utilizes a layer 2 switch interconnecting several routers to intelligently forward multicast packets throughout an interne exchange carrying multicast content. The layer 2 switch performs protocol snooping to extract a lookup key that is based on network layer protocol information. The lookup key is uniquely formulated to support either shared or explicit source distribution trees. The lookup key is used to query a forwarding memory that returns an outgoing port index. The outgoing port index points to one or more outgoing ports that are eligible to receive the multicast packet. The outgoing ports are also connected to the neighboring device(s) that are designated to receive the multicast packet. The routing system also supports real time maintenance and updating of the forwarding memory based on the periodic exchange of control messages. The routing system is configured to support PIM routers operating in PIM SM or PIM SSM modes. However, the routing system can also support other multicast protocols and/or standards.
    • 路由系统利用互连多个路由器的层2交换机在携带多播内容的内部交换机中智能地转发多播分组。 第二层交换机执行协议侦听,提取基于网络层协议信息的查找密钥。 查找密钥是独一无二的,用于支持共享或明确的源分发树。 查询键用于查询返回出站端口索引的转发内存。 出站端口索引指向一个或多个有资格接收组播数据包的输出端口。 输出端口也连接到被指定为接收多播分组的相邻设备。 路由系统还支持基于控制消息的周期性交换的转发存储器的实时维护和更新。 路由系统配置为支持以PIM SM或PIM SSM模式运行的PIM路由器。 然而,路由系统还可以支持其他多播协议和/或标准。
    • 8. 发明申请
    • NETWORK PROXY LAYER FOR POLICY-BASED APPLICATION PROXIES
    • 网络代理层用于基于策略的应用程序
    • US20150156223A1
    • 2015-06-04
    • US14094529
    • 2013-12-02
    • Feilong XuChih-Wei ChaoLee Chen
    • Feilong XuChih-Wei ChaoLee Chen
    • H04L29/06
    • H04L65/105H04L65/1069H04L67/141
    • A system and method for providing a network proxy layer are disclosed. The network proxy layer may receive a connection establishment event for a client connection of an application session and send the client connection event to an application proxy for the application session, the application proxy being associated with an application of a server. Upon establishment of the client connection, the network proxy layer may receive one or more data packets from the client connection. The network proxy layer may further receive a connection establishment event for a server connection of the application session of the server, and receive one or more data packets from the server connection.
    • 公开了一种用于提供网络代理层的系统和方法。 网络代理层可以接收用于应用会话的客户端连接的连接建立事件,并且将客户端连接事件发送到应用程序会话的应用代理,应用代理与服务器的应用相关联。 在建立客户端连接时,网络代理层可以从客户端连接接收一个或多个数据分组。 网络代理层还可以接收服务器应用会话的服务器连接的连接建立事件,并从服务器连接接收一个或多个数据包。