679 MRM - System Port | Service Name:mrm

679 is a System Port. Transport Protocol TCP UDP , 679 Service Name mrm, Service Name Description: MRM.

Port	Protocol	Service Name	Description	Source
679	TCP UDP	mrm	MRM	IANA
679	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
679	TCP UDP	mrm	MRM	bekkoame

Port	Service Name	Description
551	cybercash	cybercash
2190	tivoconnect	TiVoConnect Beacon
2356	gxtelmd	GXT License Managemant
2895	natuslink	NATUS LINK
3395	dyna-lm	Dyna License Manager (Elam)
3847	msfw-control	MS Firewall Control
4142	oidocsvc	Document Server
5586		Unassigned
5696	kmip	Key Management Interoperability Protocol
5754		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