Port directory — page 22
Registry assignments, software defaults and local listeners are different things. A port number alone does not identify or secure a service.
Common Ports Overview
Telnet protocol port for remote login (plaintext transmission, deprecated)
Common Software02
Traditional Telnet server daemon
Windows built-in Telnet service
Private printer service port
Common Software02
Private printing service
Legacy printing system
IANA removed the original assignment in 2013; this port is currently reserved. Historical use: IMP Logical Address Maintenance.
Common Software01
IMP Logical Address Maintenance port (historical protocol).
Remote Telnet service port for remote terminal access
Common Software02
remoteTelnetservice
Remote
Network printing protocol port for network printing services
Common Software02
networkprintingservice
UnixPrinting
WASTE P2PFileSharingProtocolport，also used by some malware
Common Software03
EncryptionP2PFileSharing
Application
Alternative default port for Strapi CMS
Database port, mainly used for Derby Network Server
Common Software01
Default port for Apache Derby network server
FeathersJS - Alternative default port for FeathersJS
Common Software01
Alternative default port for FeathersJS
Database port, mainly used for HSQLDB
Common Software02
Default port for HSQLDB database server
ThingsBoard WebSocketPort