Are Secure Sessions a layer on top of, and only used with Reliable Messaging?
Also, it sounds like it's not
considered Message Security, or Transport Security, but something
in-between.
This quote is supposed to summarize
what Secure Sessions are, and from the way it introduces them, it sounds like
Secure Sessions are only used with Reliable Messaging.
"A feature of [WCF] is reliable
sessions that guarantee messages are received in the order they were sent. The
topics in this section discuss the security implications to consider when
creating a reliable session."
(http://msdn.microsoft.com/en-us/library/ms731996.aspx)
This quote from MSDN sounds like
Secure Sessions are or can be used independently of Reliable
Messaging.