Telnet: open

Updated: April 17, 2012

Applies To: Windows 7, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP

Connects to a Telnet server. For examples of how this command can be used, see Examples.


o[pen] <HostName> [<Port>]


Parameter Description


Specifies the computer name or IP address.


Specifies the TCP port that the Telnet server is listening on. The default is TCP port 23.


Connect to a Telnet server at


Additional references