2.The Transport Layer
The Transport Layer: Multiplexing, Demultiplexing, and PortsDissecting a TCP SegmentTCP Control Flags: Establishing and Closing ConnectionsUnderstanding TCP Socket StatesUnderstanding Connection-Oriented Protocols and Connectionless ProtocolsSupplemental Reading for System Ports versus Ephemeral PortsNetwork Firewalls: A Critical Component of Network Security
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