Port 397 Multi Protocol Trans. Net. - System Port

Port 397 is a System Port. Transport Protocol TCP UDP , Port 397 Service Name mptn, Service Name Description: Multi Protocol Trans. Net..

Port	Protocol	Service Name	Description	Source
397	TCP UDP	mptn	Multi Protocol Trans. Net.	IANA
397	TCP UDP	mptn	Multi Protocol Trans. Net.	bekkoame

Port	Service Name	Description
1233	univ-appserver	Universal App Server
1904	fjicl-tep-c	Fujitsu ICL Terminal Emulator Program C
2390	rsmtp	RSMTP
2685	mpnjsocl	mpnjsocl
2806	cspuni	cspuni
2964	bullant-srap	BULLANT SRAP
3022	csregagent	CSREGAGENT
3213	neon24x7	NEON 24X7 Mission Control
3763	xo-wave	XO Wave Control Port
4198		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