IBM® WebSphere® Application Server inter-operates with the previous product versions. Use this topic to configure this behavior.
Interoperability
is achieved using the z/OS® Secure Authentication Service
(z/SAS) security mechanism for local OS and System Authorization Facility
(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.
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