8750 DEY Storage Key Negotiation - User Port

8750 is a User Port. Transport Protocol TCP , 8750 Service Name dey-keyneg, Service Name Description: DEY Storage Key Negotiation.

Port	Protocol	Service Name	Description	Source
8750	TCP	dey-keyneg	DEY Storage Key Negotiation	IANA
8750	UDP		Reserved	IANA
8750	TCP UDP		EMC2 (Legato) Networker or Sun Solstice Backup,Official	wikipedia
8750	UDP		QuickTime Streaming Server	Apple.com
8750	TCP		Web service, iTunes Radio streams	Apple.com

Port	Service Name	Description
272		Unassigned
1207	metasage	MetaSage
3537	ni-visa-remote	Remote NI-VISA port
3629	escvpnet	ESC/VP.net
3668	dell-rm-port	Dell Remote Management
3696	telnetcpcd	Telnet Com Port Control
3991	bv-smcsrv	BindView-SMCServer
4965		Unassigned
5034		Unassigned
5773		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