1151 Unizensus Login Server - User Port

1151 is a User Port. Transport Protocol TCP UDP , 1151 Service Name unizensus, Service Name Description: Unizensus Login Server.

Port	Protocol	Service Name	Description	Source
1151	TCP UDP	unizensus	Unizensus Login Server	IANA
1151	TCP		Orion	anti-trojan
1151			Orion	simovits.com
1151	TCP		Orion	bekkoame
1151	TCP UDP	unizensus	Unizensus Login Server	bekkoame

Port	Service Name	Description
1023		Reserved
1418	timbuktu-srv2	Timbuktu Service 2 Port
2546	vytalvaultbrtp	vytalvaultbrtp
3431	ndl-als	Active License Server Port
4116	smartcard-tls	smartcard-TLS
4256	vrml-multi-use	VRML Multi User Systems
4530		Unassigned
4777		Unassigned
5151	esri-sde	ESRI SDE Instance IANA assigned this well-formed service name as a replacement for "esri_sde".
5177		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