448 WebSphere Application Server V8.5 Concepts, Planning, and Design Guide
Encryption is more secure, but can have performance impacts. The same is also true for
protocols, although your choice of protocol is usually decided for you by what you are trying to
communicate with. For each bus, select the particular transport chains that have the attributes
you need.
Ask the following questions when designing secure message transportation solutions:
What types of messages do you need secured?
Where do you need to use encryption, and to what extent?
What are the connection requirements (in terms of security) of the party you are trying to
communicate with?
13.7.2 Planning for high availability
An application server has only one messaging engine ...