398 Kryptolan - System Port | Service Name:kryptolan

398 is a System Port. Transport Protocol TCP UDP , 398 Service Name kryptolan, Service Name Description: Kryptolan.

Port	Protocol	Service Name	Description	Source
398	TCP UDP	kryptolan	Kryptolan	IANA
398	TCP UDP	kryptolan	Kryptolan	bekkoame

Port	Service Name	Description
186	kis	KIS Protocol
1511	3l-l1	3l-l1
2027	shadowserver
2329	nvd	NVD
4320	fdt-rcatp	FDT Remote Categorization Protocol
5287		Unassigned
6099	raxa-mgmt	RAXA Management
6210		Unassigned
6428		Unassigned
6545		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