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1.3 The Internet Protocols
The Internet Protocol Suite (usually referred to as just TCP/IP)(1) consists of a number of different protocols at different levels or “layers.” For our purposes, three protocols provide the fundamental communications mechanisms. All other defined protocols are referred to as user-level protocols (e.g., HTTP, used later in this web page).
1.3.1 The Basic Internet Protocols | The basic protocols. | |
1.3.2 TCP and UDP Ports | The idea behind ports. |