536 opalis-rdv - System Port | Service Name:opalis-rdv

536 is a System Port. Transport Protocol TCP UDP , 536 Service Name opalis-rdv, Service Name Description: opalis-rdv.

Port	Protocol	Service Name	Description	Source
536	TCP UDP	opalis-rdv	opalis-rdv	IANA
536	TCP UDP	opalis-rdv	opalis-rdv	bekkoame

Port	Service Name	Description
1871	canocentral0	Cano Central 0
2222	EtherNet-IP-1	EtherNet/IP I/O IANA assigned this well-formed service name as a replacement for "EtherNet/IP-1".
2224	efi-mg	Easy Flexible Internet/Multiplayer Games
2323	3d-nfsd	3d-nfsd
2535	madcap	MADCAP
3142	rdc-wh-eos	RDC WH EOS
3708	sun-as-iiops	Sun App Svr - Naming
4454	nssagentmgr	NSS Agent Manager
4711		Unassigned
4749	profilemac	Profile for Mac

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