I have an internal proxy that is using an username/password but I need to go to a site that requires a username/password. I'm trying to create the correct HttpWebResponse to handle this situation. Does anyone have any examples? I need a web request to go through my proxy server and log into another site. I have tried changing the Credentials and resetting the .Proxy property but I'm getting an error "The underlying connection was closed: Unable to connect to the remote server." I don't think it is connecting correctly.