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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。