11.2.3 Third-party telnet client (Windows on Windows)
This procedure applies to the following cases:
32-bit Internet Explorer on a 64-bit operating system (other than Windows 7 or Windows 10)
32-bit Firefox on a 64-bit operating system
To configure a third-party telnet client for use by a Web browser, follow these steps:
Obtain and install a third-party telnet client.
This procedure gives examples for the PuTTY client installed to C:\Program Files\PuTTY\putty.exe. The PuTTY client is available from the following Website:
http://www.putty.org
Internet Explorer only: Enable Internet Explorer to use the telnet protocol.
a. Back up the Windows registry.
b. Use the Windows registry editor to add the [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_DISABLE_TELNET_PROTOCOL] key with the following values:
Name
Type
Data
iexplore.exe
REG_DWORD
0
Set file association for the URL:Telnet protocol file type.
a. Back up the Windows registry.
b. Use the Windows registry editor to modify the [HKEY_CLASSES_ROOT\Wow6432Node\telnet\shell\open\command] key with the following values:
Name
Type
Data
(default)
REG_SZ
"C:\Program Files\PuTTY\putty.exe" %l
%l (with a lowercase L) is the argument passed to telnet, usually an IP address or the fully-qualified domain name of a node.
In a .reg file, escape each quotation mark (") and backslash (\) character with a backslash (\) character.
Restart the Web browser, and then, in the browser address bar, enter the telnet command:
telnet://node
node is the IP address or fully-qualified domain name of a node that runs the telnet server.
If you are prompted with a security warning, permit the action.
In Firefox, select the Remember my choice for telnet links check box.