To enable Telnet command line utilities

1. In Windows > Start > Control Panel > Programs and Features.
2. Turn Windows features on or off > select the Telnet Client check box > OK.
   
   The system installs the required files. This takes a less than a minute.

To check if you've access to a website

1. Windows key + R > type cmd > OK.
2. At the command prompt type telnet <> <>
   
   Where <> and <> are the web address and port number for the site you're checking.
   
   For example:
   
   
   • telnet download.sage.com 443
   • telnet update.sage.com 443

If successful, a blank black window will appear.

If unsuccessful, the following message shows:

Could not open connection to host on port ***: connect failed