Port 617 SCO Desktop Administration Server - System Port

Port 617 is a System Port. Transport Protocol TCP UDP , Port 617 Service Name sco-dtmgr, Service Name Description: SCO Desktop Administration Server.

Port	Protocol	Service Name	Description	Source
617	TCP UDP	sco-dtmgr	SCO Desktop Administration Server	IANA
617	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
617	TCP UDP	sco-dtmgr	SCO Desktop Administration Server	bekkoame

Port	Service Name	Description
653	repscmd	RepCmd
732		Unassigned
910	kink	Kerberized Internet Negotiation of Keys (KINK)
1075	rdrmshc	RDRMSHC
1353	relief	Relief Consulting
2131	avantageb2b	Avantageb2b
2525	ms-v-worlds	MS V-Worlds
3121	pcmk-remote	The pacemaker remote (pcmk-remote) service extends high availability functionality outside of the Linux cluster into remote nodes.
3338	anet-b	OMF data b
4697		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