title: How to add "Authentication" on existing SOAP web services?
body: <p>I have SOAP web-service named "getApplicationDetails" which is deployed and used by few applications (which are in my office network)</p>
  
  <p>Now the above service should be allowed to be used by applications which are outside of my office network which in turn means that I need to add user authentication which seems to fair enough from this <a href="https://stackoverflow.com/questions/2998480/web-service-soap-header-authentication">example</a></p>
  
  <p>Instead of creating a new web service can I use existing web services by passing authentication in predefined cases and use authentication in rest. </p>
  
  <ul>
  <li>What should be approach for the above scenario ?</li>
  <li>Do I need to consider spring AOP ?
  (<em>From my memory, I can recall that the logging,authentication etc can be moved to external classes with this approach</em>)</li>
  </ul>