After it is authenticated, the remote Directory Server is fully authorized to exchange replication messages with the local Directory Server. There is no other access control in place.

Authentication in the replication protocol is based on public key cryptography using TLS client certificate authentication. The certificate used for authentication is stored in the ads-truststore backend of the Directory Server.

During replication setup, the command-line utility distributes public keys to all directory servers to establish trust between the Directory Servers and to enable TLS client authentication.