LDAP authentication can be done through the a AAA (Authentication, Authorization, and Accounting) node on a Datapower Policy. LDAP authentication can be done using Active Directory, Tivoli Directory Server or TIM/TAM and many more open source LDAP applications. The first step is to add the AAA node to your policy:

Configure your AAA node by dubble clicking on the node and creating a new AAA policy. The settings below was for Tivoli Directory Server.