772 - System Port | Service Name:cycleserv2

772 is a System Port. Transport Protocol TCP , 772 Service Name cycleserv2, Service Name Description: .

Port	Protocol	Service Name	Description	Source
772	TCP	cycleserv2		IANA
772	UDP	cycleserv2		IANA
772	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
772	TCP UDP	cycleserv2		bekkoame

Port	Service Name	Description
642	esro-emsdp	ESRO-EMSDP V1.3
1176	indigo-server	Indigo Home Server
2995	idrs	IDRS
3027	LiebDevMgmt-C	LiebDevMgmt_C IANA assigned this well-formed service name as a replacement for "LiebDevMgmt_C".
3622	ff-lr-port	FF LAN Redundancy Port
4348	itose	ITOSE
4413		Unassigned
7430	xmpv7	OpenView DM xmpv7 api pipe
7452		Unassigned
9032		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