SOAP adapter - WS authorization

Hello,

I am trying to expose an RFC as a web service using the SOAP Adapter.

The problem is that in order to consume this web service, authorization is required by the client application(Otherwise the call returns code 401 - Unauthorized)

Is it possible to allow anonymous calls to the WS ?

If not, can anyone instruct me how to provide authorization data during the call to the WS (using C#) ?

Thanks,

Elad.