You can see the HTTP (hypertext transfer protocol) header from a web site using the standard Telnet program that comes with Windows. For example, to see the header from the root page of the Microsoft web site, do these steps:

1. Start a DOS command prompt
2. From the command prompt type

telnet www.microsoft.com 80

3. Turn on localecho so you can see what you are doing.
3.1. Type Ctrl+] (hold down the Ctrl key and press the right bracket)
3.2. Type

set localecho

3.3. Press Enter on a blank line
4. type

GET HTTP/1.1
Host
www.microsoft.com

5. Press Enter twice