MS Windows Telnet command

Telnet is a simple, text-based terminal emulation program that allows you to connect to another computer across the network or by using the Internet (usually over port 23).

If you've been granted the appropriate rights to connect to that computer, Telnet will allow you to enter commands used to access programs and services that are on the remote computer, as if you were sitting right in front of it. Telnet can be used for many things, including accessing e‑mail, databases, or files.

Telnet is considered insecure because it transfers all data in clear text which could be easily read by anyone eves-dropping on the network. Users should consider using SSH for secure remote terminal access.

The telnet command is an external command that is available in Microsoft Windows 2000 and Windows XP.

Syntax

telnet [host [port]]

host specifies the hostname or IP address of the remote computer to connect to.
port Specifies the port number or service name.
Commands available through the telnet program:

close	close current connection
display	display operating parameters
open	connect to a site
quit	exit telnet
set	set options (type 'set ?' for a list) NTLM Turn ON NTLM Authentication. LOCAL_ECHO Turn ON LOCAL_ECHO. TERM x (where x is ANSI, VT100, VT52, or VTNT) CRLF Send both CR and LF
status	print status information
unset	unset options (type 'unset ?' for a list) NTLM Turn OFF NTLM Authentication. LOCAL_ECHO Turn OFF LOCAL_ECHO. CRLF Send only CR (no LF is sent)
?/help	print help information

Examples

telnet myhost.com

Telnet to the computer myhost.com

Windows Vista & 7 – Enable Telnet

By default, telnet is not enabled with Windows Vista or 7. you can enable it by following these steps:

Start => Control Panel => Programs And Features => Turn Windows features on or off

Check Telnet Client and click OK

Windows Server 2008 / R2 - Install Telnet.

1. Start Server Manager. Click Start, right-click Computer, and then click Manage.
2. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
3. In the Features Summary section, click Add features.
4. In the Add Features Wizard, select Telnet Client, and then click Next.
5. On the Confirm Installation Options page, click Install.
6. When installation finishes, on the Installation Results page, click Close.