Port 779 Unassigned - System Port

Port 779 is a System Port. Transport Protocol , Port 779 Service Name , Service Name Description: Unassigned.

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

Port	Service Name	Description
744	flexlm	Flexible License Manager
868		Unassigned
2172	msfw-s-storage	MS Firewall SecureStorage
2495	fast-rem-serv	Fast Remote Services
2651	ebinsite	EBInSite
2904	m2ua	M2UA
3519	nvmsgd	Netvion Messenger Port
3733	multip-msg	Multipuesto Msg Port
6074	max	Microsoft Max
6082		Reserved

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