Universal Messaging provides configurable security for authentication and entitlements. When a user connects using SSL, the server must have an SSL enabled interface configured. Once the interface is configured correctly, clients can connect to a realm using an SSL encrypted session.

Before clients can use the realm correctly, the correct permissions must be granted to each user within the ACLs for the realm, resources (see Messaging Paradigms) and services. For more information on this please see the security section.