title: Can a Silverlight application authenticate versus a local LDAP/ActiveDirectory Server
body: <p>If I have an externally hosted application (www.outside.com) outside the firewall but users within a company wanted to be able to enable LDAP authentication against their local (behind the firewall) AD server (acting as LDAP) or other LDAP server (call it ldap.inside.com), how would this be done.</p>
  
  <p>It seems technically possible in that when a user tried to login to outside.com through a client-side silverlight interface, that the SL app could connect to the outside.com login service and be told to authenticate that user against ldap.inside.com. The SL app would make the calls to ldap.inside.com to authenticate the user.</p>
  
  <p>Of course, there is the issue of how the server is notified securely that the client authenticated itself...Has anyone done this?</p>