Port 770 - System Port | Service Name:cadlock

Port 770 is a System Port. Transport Protocol TCP , Port 770 Service Name cadlock, Service Name Description: .

Port	Protocol	Service Name	Description	Source
770	TCP	cadlock		IANA
770	UDP	cadlock		IANA
770	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
770	TCP UDP	cadlock		bekkoame

Port	Service Name	Description
2020	xinupageserver
2310	sdclient	SD Client
2731	fyre-messanger	Fyre Messanger
3448	dnc-port	Discovery and Net Config
3693		Unassigned
4205	vrml-multi-use	VRML Multi User Systems
4602	mtsserver	EAX MTS Server
6180		Unassigned
7237	pads	PADS (Public Area Display System) Server
7260		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