By default, NETLAB+ will open the built-in console viewer or remote PC viewer. These viewers are Java based, so there is no special client to load (other than Java).
If a third party (local) Telnet client is configured in your NETLAB+ profile, the third party Telnet application will open and ask the user to log in with the NETLAB+ user ID and password.
In Internet Explorer 7 and later, the Telnet protocol handler is disabled by default. As a result, you will not be able to establish a remote console connection to a lab device, using your third party (local) Telnet client through Internet Explorer 7.
Before reading the solution outlined on this page, you should recognize that NDG is not responsible for any damage caused to your registry or operating system by changes that you perform to your computer. This example is meant to outline steps that can be taken if you choose to edit your registry in order to use your preferred Third Party Telnet Application. NDG has successfully used this change to utilize IE 7.0 for the purpose of setting a preferred Third Party Telnet Application for use with NETLAB+. NDG will not assume responsibility for any change you make to your PC operating system.
Add the following key to your registry:
Run regedit from the Start menu.
Locate the FeatureControl directory
Add a new key into the FeatureControl directory
Name the new key "FEATURE_DISABLE_TELNET_PROTOCOL"
Add a new DWORD value
DWORD name should be "iexplore.exe" and value 0