Port 773 - System Port | Service Name:submit

Port 773 is a System Port. Transport Protocol TCP , Port 773 Service Name submit, Service Name Description: .

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

Port	Service Name	Description
575	vemmi	VEMMI
609	npmp-trap	npmp-trap
1902	fjicl-tep-b	Fujitsu ICL Terminal Emulator Program B
2516	maincontrol	Main Control
2563	cti-redwood	CTI Redwood
2602	discp-server	discp server
3290	caps-lm	CAPS LOGISTICS TOOLKIT - LM
3464	edm-mgr-sync	EDM MGR Sync
3679	Escale (Newton Dock)	Newton Dock
4080	lorica-in	Lorica inside facing

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