Port 847 dhcp-failover 2 - System Port | Service Name:dhcp-failover2

Port 847 is a System Port. Transport Protocol TCP UDP , Port 847 Service Name dhcp-failover2, Service Name Description: dhcp-failover 2.

Port	Protocol	Service Name	Description	Source
847	TCP UDP	dhcp-failover2	dhcp-failover 2	IANA
847	TCP		DHCP Failover protocol,Official	wikipedia
847	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
847	TCP UDP	dhcp-failover2	dhcp-failover 2	bekkoame

Port	Service Name	Description
2087	eli	ELI - Event Logging Integration
2292	mib-streaming	Sonus Element Management Services
2325	ansysli	ANSYS Licensing Interconnect
2418	cas	cas
2811	gsiftp	GSI FTP
3017	event-listener	Event Listener IANA assigned this well-formed service name as a replacement for "event_listener".
3827	netmpi	Netadmin Systems MPI service
4481		Unassigned
4855		Unassigned
5267		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