669 MeRegister - System Port | Service Name:meregister

669 is a System Port. Transport Protocol TCP UDP , 669 Service Name meregister, Service Name Description: MeRegister.

Port	Protocol	Service Name	Description	Source
669	TCP UDP	meregister	MeRegister	IANA
669	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
669	TCP		DP Trojan	emsisoft
669	TCP		DP trojan	anti-trojan
669			DP trojan	sans.org
669			DP trojan , SniperNet	simovits.com
669	TCP		DP trojan	bekkoame
669	TCP UDP	meregister	MeRegister	bekkoame

Port	Service Name	Description
372	ulistproc	ListProcessor
1536	ampr-inter	ampr-inter
1788	psmond	psmond
2651	ebinsite	EBInSite
3307	opsession-prxy	OP Session Proxy
3541	voispeed-port	VoiSpeed Port
3767	listmgr-port	ListMGR Port
3979	smwan	Smith Micro Wide Area Network Service
5410	salient-usrmgr	Salient User Manager
5732		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