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Telnet is an Internet standard procedure and protocol based on request for comments (RFC) 854, which specifies a method of sending and receiving unencrypted ASCII characters (plaintext) over the network. Telnet includes two functional modules: Telnet client and Telnet server. The Telnet client is an excellent tool for developers and administrators to help manage and test network connections. It only supports character-based interfaces and applications, not graphics. By default, the Telnet client module (PS. PS.) is not installed in Windows Server 2016. Telnet server functionality is no longer included in Windows Server 2016 for security and other reasons. Putting aside the system module, there are many similar putty gadgets for you to choose from.

An error is generally reported that the telnet client is not installed as follows:

Error message under powershell:

Telnet: the "telnet" entry cannot be recognized as the name of a cmdlet, function, script file, or runnable program. Please check the spelling of the name, and if you include the path, make sure the path

Correct, and then try again.

Location line: 1 character: 1

+ telnet

+ ~

+ CategoryInfo: ObjectNotFound: (telnet:String) [], CommandNotFoundException

+ FullyQualifiedErrorId: CommandNotFoundException

Error message under CMD:

'telnet' is not an internal or external command, nor is it a runnable program or batch file.

There are three ways to install the Telnet client:

1. Install telnet in GUI mode:

Open the server manager from the taskbar icon or the start page, and select-- add roles and features-- in the add features interface-- telnet client in the dashboard interface:

Install the Telnet client from the DOS command prompt:

Dism / Online / Enable-Feature / FeatureName:TelnetClient

3. Powershell installs Telnet client:

Install-WindowsFeature telnet-client

Or

Add-WindowsFeature telnet-client

Information about telnet help is as follows:

Welcome to Microsoft Telnet Client

The Escape character is' CTRL+]'

Microsoft Telnet >?

Command may be an acronym. The supported commands are:

C-close closes the current connection

D-display displays operation parameters

O-open hostname [port] connects to the host (default port 23).

Q-quit exits telnet

Set-set setting options (type 'set?' Get the list)

Sen-send sends the string to the server

St-status print status information

U-unset unset option (type 'set?' Get the list)

? / h-help print help information

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