IBM WebSphere Application Server inter-operates with the previous product versions. Use this topic to configure this behavior.
Interoperability
is achieved using the z/SAS security mechanism for local OS and SAF-based
authorization.
The
current release of the Application Server distinguishes the identities of
the user who acts as an administrator, managing the Application Server environment,
from the identity of the user that is used for authenticating between servers.
In prior releases, the end user had to specify a server user ID and password
as the user identity for authenticating between servers. In the current release
of the Application Server, the server user ID is generated automatically and
internally; however, the end user can specify that the server user ID and
password not be automatically generated. This option is especially important
in the case of a mixed-release cell, where the server user ID and password
are specified in a down-level version of the Application Server. In such a
scenario, the end user should opt out of automatically generating the server
user ID and instead use the server user ID and password that is specified
in the down-level version of the Application Server, in order to ensure backwards
compatibility.