Port 23

Modified by:

Port 23 is used for Telnet, which is a protocol commonly used to provide remote access to a computer over a network. It allows a user to log in to a remote system and execute commands as if sitting directly at the console. However, Telnet is considered a security risk as the communication is not encrypted and can be intercepted, so it is recommended to use a more secure protocol such as SSH (Secure Shell) instead.

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 23
tcp
telnet
Telnet
WELL KNOWN PORT
Port 23
udp
telnet
Telnet
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 4088
Ports those registered with IANA are shown as official ports. The same port number
Port 1811
Port 1811 is typically used for communication between client applications and the McAfee ePolicy
Port 16991
Ports those registered with IANA are shown as official ports. The same port number
Port 3384
Port 3384 is not associated with any specific service or application. It is one
Ports 32500 – 32600
Port 32500- Port 32600 Port 32600- Port 32700 Port 32700- Port 32800 Port 32800-
Port 4667
Port 4667 is typically used for the online chat protocol MIRC. It is a
Port 1277
Ports those registered with IANA are shown as official ports. The same port number
Port 4078
Ports those registered with IANA are shown as official ports. The same port number
Port 3657
Port 3657 is used for the Xbox Live network protocol, specifically for peer-to-peer connectivity
Port 1275
Port 1275 is not well-known or assigned to any specific use by the Internet
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