603 IDXP - System Port | Service Name:idxp

603 is a System Port. Transport Protocol TCP UDP , 603 Service Name idxp, Service Name Description: IDXP.

Port	Protocol	Service Name	Description	Source
603	TCP UDP	idxp	IDXP	IANA
603	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
603	TCP UDP	idxp	IDXP	bekkoame

Port	Service Name	Description
2178	bitspeer	Peer Services for BITS
2756	simplement-tie	simplement-tie
3268	msft-gc	Microsoft Global Catalog
3559	cctv-port	CCTV control port
4046	acp-proto	Accounting Protocol
4475		Unassigned
4976		Unassigned
5389		Unassigned
6267	gld	GridLAB-D User Interface
6874		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