4099 DPCP - User Port | Service Name:dpcp

4099 is a User Port. Transport Protocol TCP UDP , 4099 Service Name dpcp, Service Name Description: DPCP.

Port	Protocol	Service Name	Description	Source
4099	TCP UDP	dpcp	DPCP	IANA
4099	TCP UDP	dpcp	DPCP	bekkoame

Port	Service Name	Description
768		Unassigned
1166	qsm-remote	QSM RemoteExec
1235	mosaicsyssvc1	mosaicsyssvc1
1475	taligent-lm	Taligent License Manager
2416	rmtserver	RMT Server
3230	sftdst-port	Software Distributor Port
3960	bess	Bess Peer Assessment
4681	parliant	Parliant Telephony System
4729		Reserved
6072	diagnose-proc	DIAGNOSE-PROC

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