In addition to RADIUS and the local user database, SonicOS supports LDAP and Microsoft Active Directory (AD) directory services for user authentication. For more information, refer to Using LDAP/Active Directory/eDirectory Authentication
Before beginning your LDAP configuration, you should prepare your LDAP server and your SonicWall for LDAP over TLS support. This involves installing a server certificate and your LDAP server, and a CA (Certificate Authority) certificate for the issuing CA on your SonicWall. For more information, refer to Integrating LDAP into the SonicOS Network Security Appliance.