6058 X Window System - User Port

6058 is a User Port. Transport Protocol TCP UDP , 6058 Service Name x11, Service Name Description: X Window System.

Port	Protocol	Service Name	Description	Source
6058	TCP UDP	x11	X Window System	IANA

Port	Service Name	Description
1124	hpvmmcontrol	HP VMM Control
1394	iclpv-nlc	Network Log Client
1408	sophia-lm	Sophia License Manager
1724	csbphonemaster	csbphonemaster
2532	ovtopmd	OVTOPMD
2742	tsb2	TSB2
2892	snifferdata	SNIFFERDATA
3695	bmc-data-coll	BMC Data Collection
4102	brlp-1	Braille protocol
4356	qsnet-assist	QSNet Assistant

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