IPSEC L2TP Tunnel with LDAP

[mumbles202]

Working on a new L2TP setup and trying to get it to work using LDAP for the authentication server.  I'm able to test successfully w/ the default Windows settings using a local user; I'm also able to test successfully using a LDAP user if I just use PAP.  Is there a way to use something like MS-CHAP on the client and then force the LDAP server on the FortiGate to use MS-CHAP as well to the server?  

[AlexandreP]

I think you have to force it on the client side.

Go in the properties of your vpn connection, and change it on the security tab (On Windows).