568 microsoft shuttle - System Port | Service Name:ms-shuttle

568 is a System Port. Transport Protocol TCP UDP , 568 Service Name ms-shuttle, Service Name Description: microsoft shuttle.

Port	Protocol	Service Name	Description	Source
568	TCP UDP	ms-shuttle	microsoft shuttle	IANA
568	TCP UDP	ms-shuttle	microsoft shuttle	bekkoame

Port	Service Name	Description
282	cableport-ax	Cable Port A/X
489	nest-protocol	nest-protocol
819		Unassigned
2161	apc-2161	APC 2161
2840	l3-exprt	l3-exprt
3252	dhe	DHE port
3268	msft-gc	Microsoft Global Catalog
3940	xecp-node	XeCP Node Service
4281	vrml-multi-use	VRML Multi User Systems
4671	acter	Bull RSF action server

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