1133 Data Flow Network - User Port

1133 is a User Port. Transport Protocol TCP UDP , 1133 Service Name dfn, Service Name Description: Data Flow Network.

Port	Protocol	Service Name	Description	Source
1133	TCP UDP	dfn	Data Flow Network	IANA
1133			SweetHeart	simovits.com
1133	TCP UDP	dfn	Data Flow Network	bekkoame

Port	Service Name	Description
1255	de-cache-query	de-cache-query
1265	dssiapi	DSSIAPI
1367	dcs	DCS
3570	mccwebsvr-port	MCC Web Server Port
3579	ttat3lb	Tarantella Load Balancing
4090	omasgport	OMA BCAST Service Guide
4152	idig-mux	iDigTech Multiplex IANA assigned this well-formed service name as a replacement for "idig_mux".
4718		Unassigned
5367		Unassigned
5818		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