112 McIDAS Data Transmission Protocol - System Port

112 is a System Port. Transport Protocol TCP UDP , 112 Service Name mcidas, Service Name Description: McIDAS Data Transmission Protocol.

Port	Protocol	Service Name	Description	Source
112	TCP UDP	mcidas	McIDAS Data Transmission Protocol	IANA
112	TCP UDP	mcidas	McIDAS Data Transmission Protocol	bekkoame

Port	Service Name	Description
471	mondex	Mondex
1003		Unassigned
1295	ehtp	End-by-Hop Transmission Protocol
2626	gbjd816	gbjd816
3589	isomair	isomair
4528		Unassigned
4885	abbs	ABBS
5282	transmit-port	Marimba Transmitter Port
6480	sun-sr-http	Service Registry Default HTTP Domain
8872		Unassigned

A port is an endpoint of communication in an operating system. While the term is also used for hardware devices, in software it is a logical construct that identifies a specific process or a type of service.

Port numbers are assigned in various ways, based on three ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535);

The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users. Ports are used in the TCP [RFC793] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port. The contact port is sometimes called the "well-known port". To the extent possible, these same port assignments are used with the UDP [RFC768]. The range for well-known ports managed by the IANA is 0-1023.
DYNAMIC AND/OR PRIVATE PORTS Registered Ports are those from 1024 through 49151.
The Dynamic and/or Private Ports are those from 49152 through 65535