1513 Fujitsu Systems Business of America, Inc - User Port

1513 is a User Port. Transport Protocol TCP UDP , 1513 Service Name fujitsu-dtc, Service Name Description: Fujitsu Systems Business of America, Inc.

Port	Protocol	Service Name	Description	Source
1513	TCP UDP	fujitsu-dtc	Fujitsu Systems Business of America, Inc	IANA
1513	TCP UDP		Garena Garena Gaming Client,Official	wikipedia
1513	TCP UDP	fujitsu-dtc	Fujitsu Systems Business of America, Inc	bekkoame

Port	Service Name	Description
3118	pkagent	PKAgent
5077		Unassigned
5160		Unassigned
5393		Unassigned
5551		Unassigned
6103	rets	RETS
7010	ups-onlinet	onlinet uninterruptable power supplies
7260		Unassigned
7264		Unassigned
8388		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