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Port number identification z/OS Communications Server: IP CICS Sockets Guide SC27-3649-00 |
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A host can maintain several TCP/IP connections at one time. One or more applications using TCP/IP on the same host are identified by a port number. The port number is an additional qualifier used by the system software to get data to the correct application. Port numbers are 16-bit integers; some numbers are reserved for particular applications and are called well-known ports (for example, 23 is for TELNET). |
Copyright IBM Corporation 1990, 2014
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