3654 VAP RealTime Messenger - User Port

3654 is a User Port. Transport Protocol TCP UDP , 3654 Service Name vaprtm, Service Name Description: VAP RealTime Messenger.

Port	Protocol	Service Name	Description	Source
3654	TCP UDP	vaprtm	VAP RealTime Messenger	IANA
3654	TCP UDP	vaprtm	VAP RealTime Messenger	bekkoame

Port	Service Name	Description
1029	solid-mux	Solid Mux Server
2560	labrat	labrat
4525		Unassigned
5514		Unassigned
6273		Unassigned
6306	ufmp	Unified Fabric Management Protocol
8937	twds	Transaction Warehouse Data Service
9337		Unassigned
9877		Unassigned
10592		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