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TCP Well Known Port Numbers

Ports are logical channels to enter into the Server/ Computer for a specific program. Ports were developed so that computers could accept data from multiple sources over the same IP address. There are 65,535 TCP and UDP ports available to transmit data but Ports 0-1023 are reserved for common use and designated as well-known ports. These ports are assigned by the IANA (Internet Assigned Numbering Authority). This means, that every port from 0-1023 will be the same on every system. This list of well-known port numbers specifies the port used by the Server for specific Server program.