Port 27

Modified by:

Port 27 is not a well-known port and is not assigned any specific use or service. It is typically unassigned and available for use by any application or service that requires a communication channel. However, some older sources indicate that it may have been used for the “NSW User System FE” protocol, which was a part of the obsolete X.25 packet switching protocol used for communication in outmoded computer networks.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 27
tcp
nsw-fe
NSW User System
WELL KNOWN PORT
Port 27
udp
nsw-fe
NSW User System
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Port 3440
Port 3440 is typically used by the Plex Media Server to manage remote access
Ports 5800 – 5900
Port 5800- Port 5900 Port 5900- Port 6000 Port 6000- Port 6100 Port 6100-
Ports 26300 – 26400
Port 26300- Port 26400 Port 26400- Port 26500 Port 26500- Port 26600 Port 26600-
Port 32774
Ports those registered with IANA are shown as official ports. The same port number
Port 4169
Port 4169 is used for the ClearQuest client-to-server communication protocol. ClearQuest is a software
Port 2406
Ports those registered with IANA are shown as official ports. The same port number
Port 2915
Ports those registered with IANA are shown as official ports. The same port number
Port 93
Ports those registered with IANA are shown as official ports. The same port number
Port 1085
Ports those registered with IANA are shown as official ports. The same port number
Port 3464
Port 3464 is used for remote printing services on macOS machines. It is used
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