499 ISO ILL Protocol - System Port | Service Name:iso-ill

499 is a System Port. Transport Protocol TCP UDP , 499 Service Name iso-ill, Service Name Description: ISO ILL Protocol.

Port	Protocol	Service Name	Description	Source
499	TCP UDP	iso-ill	ISO ILL Protocol	IANA
499	TCP UDP	iso-ill	ISO ILL Protocol	bekkoame

Port	Service Name	Description
357	bhevent	bhevent
477	ss7ns	ss7ns
967		Unassigned
1806	musiconline	Musiconline
1901	fjicl-tep-a	Fujitsu ICL Terminal Emulator Program A
1908	dawn	Dawn
1915	facelink	FACELINK
2164	ddns-v3	Dynamic DNS Version 3
2457	rapido-ip	Rapido_IP
4321	rwhois	Remote Who Is

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