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TCP Protocol | Tech Info | Network Information |

General Description

TCP is a connection-oriented, end-to-end protocol and primarily used with IP in the protocol suite TCP/IP. Along with the connection service it also provides other services such as File Transfer Protocol (FTP), Simple Mail Transfer Protocol (SMTP), and Terminal Services (TELNET). It also includes services to control data transfer, reliability, flow control, multiplexing, connections and security.

TCP/IP defines functions at layers above the Physical and Data-Link Layers of the OSI model.

In TCP/IP, a datagram is defined as the unit of data to be transmitted, a TCP or UDP header, and the IP header.

For Novell Netware networks, the Ethernet_II frame type is required to connect to a TCP/IP network. The TCP/IP support NLM must be loaded at the server to enable TCP/IP support.

TCP Sockets:

TCP sockets have 3 parts. The IP Address, the TCP port number and the socket identifier.

TCP ports are also known as "TCP Port number", "port address", "data port", and "port number"

Services have pre-assigned port numbers between 0 and 1023 and are controlled by the Internet Assigned Numbers Authority (IANA). See "TCP port assignments" for a list of ports. Applications are assigned TCP ports for identification.

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