Port 540 uucpd - System Port | Service Name:uucp

Port 540 is a System Port. Transport Protocol TCP UDP , Port 540 Service Name uucp, Service Name Description: uucpd.

Port	Protocol	Service Name	Description	Source
540	TCP UDP	uucp	uucpd	IANA
540	TCP		UUCP (Unix-to-Unix Copy Protocol),Official	wikipedia
540	TCP UDP	uucp	uucpd	bekkoame

Port	Service Name	Description
1176	indigo-server	Indigo Home Server
2073	gxs-data-port	DataReel Database Socket
2273	mysql-im	MySQL Instance Manager
2531	ito-e-gui	ITO-E GUI
3727	e-mdu	Ericsson Mobile Data Unit
3840	flirtmitmir	www.FlirtMitMir.de
5046		Reserved
6715	fibotrader-com	Fibotrader Communications
7701		Unassigned
8178		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