686 Hardware Control Protocol Wismar - System Port

686 is a System Port. Transport Protocol TCP UDP , 686 Service Name hcp-wismar, Service Name Description: Hardware Control Protocol Wismar.

Port	Protocol	Service Name	Description	Source
686	TCP UDP	hcp-wismar	Hardware Control Protocol Wismar	IANA
686	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
686	TCP UDP	hcp-wismar	Hardware Control Protocol Wismar	bekkoame

Port	Service Name	Description
582	scc-security	SCC Security
1319	amx-icsp	AMX-ICSP
1914	elm-momentum	Elm-Momentum
2084	sunclustergeo	SunCluster Geographic
2626	gbjd816	gbjd816
2739	tn-timing	TN Timing
3056	cdl-server	CDL Server
5246		Reserved
5815		Unassigned
6029	x11	X Window System

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