Understanding Authentications Levels in SOAMANAGER

Hi,

In SOAMANAGER, while registering a consumer proxy through WSDL, we have a WSDL Access User ID and Pwd as well as proxy settings.

While creating Logical Port in the next step, we also need to provide the user id and password.

What is the difference between the two.

If we are calling an external web service for the first time, what questions in terms of authentication we need to ask to efficiently configure it in SOAMANAGER.

Kindly, share your thoughts or redirect me to any relevant resources providing explanation on security mechanisms in SOAManager.

Thanks

Sahil