Port 20

Modified by:

Port 20 is typically used for FTP (File Transfer Protocol) data transfer in active mode.

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 20
tcp
ftp-data
File Transfer [Default
WELL KNOWN PORT
Port 20
udp
ftp-data
File Transfer [Default
WELL KNOWN PORT
Port 20
sctp
ftp-data
FTP
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 2407
Port 2407 is commonly used for the Secure Sockets Layer (SSL) version of the
Ports 51500 – 51600
Port 51500- Port 51600 Port 51600- Port 51700 Port 51700- Port 51800 Port 51800-
Port 2552
Port 2552 is commonly used for remote administration of a server using the WinRM
Port 41
Port 41 is not an officially recognized port number and has no defined use.
Port 1609
Ports those registered with IANA are shown as official ports. The same port number
Port 5024
Port 5024 is not a commonly known or standardized port. It is possible that
Port 1837
Ports those registered with IANA are shown as official ports. The same port number
Port 1467
Ports those registered with IANA are shown as official ports. The same port number
Port 9043
Port 9043 is typically used for secure communication between a client and an IBM
Ports 51100 – 51200
Port 51100- Port 51200 Port 51200- Port 51300 Port 51300- Port 51400 Port 51400-
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