Forbidden Error while connecting to External Server

Hi,

I have created a RFC Connection of type G to connect to an external server. The user id and password details have been saved in the RFC Connection.

Also the required SSL Certificates have been uploaded in STRUST.

But when I do a connection test, I get "403 - Forbidden: Access is denied" response.

Is this because the server has a CAPTCHA(VERIFICATION) code which needs to be entered along with the user id and password, when the users connect to the server?

If yes, then what should be the way to handle this verification code?