760 - System Port | Service Name:ns

760 is a System Port. Transport Protocol TCP , 760 Service Name ns, Service Name Description: .

Port	Protocol	Service Name	Description	Source
760	TCP	ns		IANA
760	UDP	ns		IANA
760	TCP UDP		krbupdate [kreg], Kerberos registration,Unofficial	wikipedia
760	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
760	TCP UDP	ns		bekkoame

Port	Service Name	Description
664	oob-ws-https	DMTF out-of-band secure web services management protocol
1581	mil-2045-47001	MIL-2045-47001
1916	persona	Persoft Persona
2555	compaq-wcp	Compaq WCP
2616	appswitch-emp	appswitch-emp
4271	vrml-multi-use	VRML Multi User Systems
4690	prelude	Prelude IDS message proto
8609		Reserved
8683		Unassigned
8889	ddi-tcp-2	Desktop Data TCP 1

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