I need to connect a webservice client to a web service running on a spring-based application, which uses Acegi for security.

On the client side, I see that JaxRpcPortProxyFactoryBean has methods for setting a username and a password. I assume these can be made to work with Acegi on the server side (although I have no clue at this time on how to do it). However, there is something that's bugging me. Since the username and password are properties of the factory, and there is a single factory instance, how could multiple clients with different usernames and password reuse it?