FLEX-ES is a layer of software that resides and operates between a S/390 operating system
and an underlying Linux system. All the security features and functions that come with a
z/OS system work as on any other S/390 platform. However, it is possible for a Linux user
with sufficient privilege to gain access to the contents of an emulated DASD or main storage
associated with an emulated CPU, and so forth.
An EFS owner must plan and manage traditional Linux security functions for the underlying
Linux system, as well as traditional S/390 security management. If the EFS platform is used
only for S/390 ...
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