In the HTTP Proxy Setup dialog, enter the settings of your proxy server. First, enter the address and port number of the proxy server in the Address and Port fields.
If you want the update to stay in the proxy cache after you have downloaded it, select the Allow proxy to cache updates check box. This allows other users to download the update directly from the proxy without the proxy having to download it from the update server again.
If the proxy server requires user authentication, select the Proxy requires user authentication check box and enter your user name and password in the User name and Password fields.