How to enable user impersonation in Websphere portal

• Log on to the WebSphere Application Server or Network Deployment Administration Console.
• Perform the following steps to enable the Impersonation feature:
  
  ##Navigate to Resources -> Resource Environment -> Resource Environment Providers -> WP Authentication Service -> Custom Properties.
  #Click New.
  #Enter logout.explicit.filterchain in the Name field.
  #Enter com.ibm.wps.auth.impersonation.impl.ImpersonationLogoutFilter in the Value field.
  #Click Apply and then click Save to save the changes directly to the master configuration.
  ##Navigate to Resources -> Resource Environment -> Resource Environment Providers -> WP PortletServiceRegistryService -> Custom Properties.
  #Click New.
  #Enter jndi.com.ibm.portal.portlet.service.impersonation.ImpersonationService in the Name field.
  #Enter com.ibm.wps.portletservice.impersonation.impl.ImpersonationServiceImpl in the Value field.
  #Click Apply and then click Save to save the changes directly to the master configuration.
  


• Stop and restart the WebSphere_Portal server.