624 Crypto Admin - System Port | Service Name:cryptoadmin

624 is a System Port. Transport Protocol TCP UDP , 624 Service Name cryptoadmin, Service Name Description: Crypto Admin.

Port	Protocol	Service Name	Description	Source
624	TCP UDP	cryptoadmin	Crypto Admin	IANA
624	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
624	TCP UDP	cryptoadmin	Crypto Admin	bekkoame

Port	Service Name	Description
763	cycleserv
1054	brvread	BRVREAD
2567	clp	Cisco Line Protocol
2592	netrek	netrek
4102	brlp-1	Braille protocol
4817		Unassigned
5454	apc-5454	APC 5454
6418	syserverremote	SYserver remote commands
7150		Unassigned
7674	imqtunnels	iMQ SSL tunnel

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