If you want to ensure the confidentiality and integrity of messages in transit across an enterprise service bus, you need to enable bus security, so that access to the bus itself and to all resources on the bus must be authorized.
To enable bus security, you enable WebSphere global security and enable messaging security for each service integration bus that forms part of the enterprise service bus. For more information about enabling bus security, see Messaging security.
WebSphere ESB provides the authentication alias SCA_Auth_Alias that you can use for authentication.
These topics are supplemental to the core security information provided for WebSphere Application Server. For a more detailed discussion of securing your environment and applications, see the Securing applications and their environments.