Accessing WSDL gives problem..........

Hi all,

I'm using NWDS SP12. I'm trying to create deployable proxy out of one WSDL file, which is residing in the server that needs authentication to access that. So, when I give URL to that particular WSDL when generating proxy, I'm not able to do so. How do I give authentication parameter there???

Then I had tried downloading that WSDL file to my local file system and tried with that also...but no luck...

Do anyone have any idea????

Regards,

Mausam