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Controlling access to the root user password:
Your Storwize V7000 Unified runs on a Linux operating system, which has a super
user ID named
root
. The use of this ID and its password must be tightly controlled.
About this task
IBM requires the password for the root user during service procedures.
While performing a directed service procedure, you must not log onto the Storwize
V7000 Unified system as the root user unless directed to by IBM service or the
service procedure instructions.
Although the data that you must provide in the installation planning worksheet
and in the configuration planning worksheet requires you to provide the password
for the root user, you can provide the password at the time of the service call to
install and configure your machine, or when IBM service personnel arrive to
service your machine.
You have the responsibility to change the root password at whatever interval your
company requires. You also have the following responsibilities:
v
Record the password accurately.
v
Keep the password information secure.
v
Prevent users from logging on as root.
v
Make the root password available to IBM service personnel during a service call.
To change the root password, use the
chrootpwd
command while logged on as root
or a Security Administrator user.
Planning for user authentication:
One of the configuration choices you must plan for is the method of authenticating
and authorizing a client user.
Authentication is the process of verifying the identify of a client user.
Authentication is typically accomplished by verifying a user ID and password.
Authorization is the process of determining the resources that a user is allowed to
access. As an example, a user might have full (read/write/create/delete/execute)
access to files in one directory and no access to another directory.
To use all Storwize V7000 Unified features, an external authentication
infrastructure that supplies the directory of users is required. To allow
interoperability with the Common Internet File System (CIFS) protocol, a user ID
mapping mechanism must be established so that Storwize V7000 Unified can
translate the CIFS user ID into a Network File System (NFS) user identifier (UID),
which Storwize V7000 Unified uses internally.
During Storwize V7000 Unified configuration, a choice among the following
authentication methods is required:
v
Microsoft Active Directory (AD)
v
Lightweight Directory Access Protocol (LDAP)
v
Samba Primary Domain Controller (PDC) - NT4
v
Network Information Service (NIS) - NFS NetGroup support
v
Microsoft Service For UNIX (SFU)
Chapter 2. Planning for adding file modules
19
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