Role-Based Access Control (RBAC) is available in Neo4j Aura Enterprise. RBAC is not currently available in Neo4j Aura Professional.
RBAC in Neo4j Aura Enterprise is limited to the Neo4j native auth provider. LDAP & Kerberos integration are not currently available, nor does Neo4j Aura Enterprise support any custom-built auth provider plugins.
See the Neo4j Enterprise documentation for more information on Role-Based Access Control.