xfire: Intercepting Webservice header information

I have some webservices exposed through xfire and want to have security around those webservice calls. How can I add security without changing anything inside the web services? Basically I want to intercept these webservice calls before it is reaching actual webservice and to authenticate those 开发者_如何学Pythoncalls. Please help me

Regards Vishal G

Sounds like a job for Spring Security. It can provide security around an existing non-Spring application without any internal modification.