1455 ESL License Manager - User Port

1455 is a User Port. Transport Protocol TCP UDP , 1455 Service Name esl-lm, Service Name Description: ESL License Manager.

Port	Protocol	Service Name	Description	Source
1455	TCP UDP	esl-lm	ESL License Manager	IANA
1455	TCP UDP	esl-lm	ESL License Manager	bekkoame

Port	Service Name	Description
1136	hhb-gateway	HHB Gateway Control
3040	tomato-springs	Tomato Springs
3138	rtnt-2	rtnt-2 data packets
3366	creativepartnr	Creative Partner
3478	stun	Session Traversal Utilities for NAT (STUN) port
4652		Unassigned
4757		Unassigned
6196		Unassigned
6379		Unassigned
7571		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