3447 DirectNet IM System - User Port | Service Name:directnet

3447 is a User Port. Transport Protocol TCP UDP , 3447 Service Name directnet, Service Name Description: DirectNet IM System.

Port	Protocol	Service Name	Description	Source
3447	TCP UDP	directnet	DirectNet IM System	IANA
3447	TCP UDP	cddn	CompuDuo DirectNet	bekkoame

Port	Service Name	Description
1288	navbuddy	NavBuddy
1528		Unassigned
2847	aimpp-port-req	AIMPP Port Req
2858	ecnp	ECNP
2984	hpidsadmin	HPIDSADMIN
3751	gprs-cube	CommLinx GPRS Cube
4265	vrml-multi-use	VRML Multi User Systems
4634		Unassigned
5936		Unassigned
6150		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