... 封装:每一层为应用数据添加特定头层信息PDU application->segement->packet->frame->bit 源、目标端口(source and destination port) 顺序号(sequence number) ...
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Transport Layer protocols, such as the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), specify a source and destination port number in their packet headers.
传输层协议,诸如传输控制协议(TCP),用户数据报协议(UDP), 会在它们的头部指定一个资源和目的地的端口号。
As packets arrive, they are filtered by their type, source address, destination address, and port information contained in each packet.
当信息包到达时,根据每个信息包中包含的类型、源地址、目的地址和端口信息来过滤它们。
The information available is the source address, the source port, the destination address, and the destination port.
可得到的信息为: 源地址,源端口,目的地址,目的端口。
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