1313 BMC_PATROLDB IANA assigned this well-formed service name as a replacement for "bmc_patroldb". - User Port

1313 is a User Port. Transport Protocol TCP UDP , 1313 Service Name bmc-patroldb, Service Name Description: BMC_PATROLDB IANA assigned this well-formed service name as a replacement for "bmc_patroldb"..

Port	Protocol	Service Name	Description	Source
1313	TCP UDP	bmc-patroldb	BMC_PATROLDB IANA assigned this well-formed service name as a replacement for "bmc_patroldb".	IANA
1313	TCP UDP	bmc_patroldb	BMC_PATROLDB	IANA
1313	TCP		Xbiim (Canvii server)[citation needed],Unofficial	wikipedia
1313	TCP		NETrojan	emsisoft
1313	TCP		NETrojan	anti-trojan
1313			NETrojan	sans.org
1313			NETrojan	simovits.com
1313	TCP		NETrojan	bekkoame
1313	TCP UDP	bmc_patroldb	BMC_PATROLDB	bekkoame

Port	Service Name	Description
967		Unassigned
1016		Reserved
2298	d2k-datamover2	D2K DataMover 2
2380		Unassigned
2809	corbaloc	CORBA LOC
3396	printer-agent	Printer Agent IANA assigned this well-formed service name as a replacement for "printer_agent".
5051	ita-agent	ITA Agent
5059	sds	SIP Directory Services
5651		Unassigned
7113		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