How to authenticate users against Active Directory without windows authentication
Jason Taylor, Prashant Bansode, Carlos Farre, Madhu Sundararajan, Steve Gregersen
Use UserName authentication to authenticate users against Active Directory when you cannot use Windows Authentication. UserName authentication will by default map your user’s credentials to Windows account and authenticates the users against AD.
The following code snippet configures a WCF service to use the Username Authentication
* <message clientCredentialType="UserName" />*
Use message security to protect user credentials passed over the network.