1349 Registration Network Protocol - User Port

1349 is a User Port. Transport Protocol TCP UDP , 1349 Service Name sbook, Service Name Description: Registration Network Protocol.

Port	Protocol	Service Name	Description	Source
1349	TCP UDP	sbook	Registration Network Protocol	IANA
1349	UDP		BO DLL	emsisoft
1349	UDP		Back Orifice DLL	anti-trojan
1349			Bo dll	sans.org
1349			BO dll	simovits.com
1349	TCP		Bo dll	bekkoame
1349	TCP UDP	sbook	Registration Network Protocol	bekkoame

Port	Service Name	Description
853		Unassigned
1827	asi	ASI
2339	3com-webview	3Com WebView
2545	sis-emt	sis-emt
2674	ewnn	ewnn
2948	wap-push	WAP PUSH
3021	agriserver	AGRI Server
3116	mctet-gateway	MCTET Gateway
4223	vrml-multi-use	VRML Multi User Systems
4517		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