SOAP Adapter request unauthorized

Hello,

I am trying to setup a scenario in which I expose a web service through the XI using a sender soap adapter.

When the client application tries to consume the web service, it is required to produce username and password.

Is there a way to define the SOAP adapter in such a way that it will allow anonymous login ? How ?

If not, how can I bypass the authorization when consuming the web service ?

Thanks,

Elad.