6.0.3

Table Of Contents
After installation, the administrator@vsphere.local user has administrator access to both vCenter Single
Sign-On and vCenter Server. That user can then add identity sources, set the default identity source, and
manage users and groups in the vCenter Single Sign-On domain (vsphere.local).
All users that can authenticate to vCenter Single Sign-On can reset their password, even if the password has
expired, as long as they know the password. See “Change Your vCenter Single Sign-On Password,” on
page 59. Only vCenter Single Sign-On administrators can reset the password for users who no longer have
their password.
vCenter Single Sign-On Administrator Users
The vCenter Single Sign-On administrative interface is accessible from the vSphere Web Client.
To congure vCenter Single Sign-On and manage vCenter Single Sign-On users and groups, the user
administrator@vsphere.local or a user in the vCenter Single Sign-On Administrators group must log in to
the vSphere Web Client. Upon authentication, that user can access the vCenter Single Sign-On
administration interface from the vSphere Web Client and manage identity sources and default domains,
specify password policies, and perform other administrative tasks. See “Conguring vCenter Single Sign-On
Identity Sources,” on page 29.
N You cannot rename the administrator@vsphere.local user. For improved security, consider creating
additional named users in the vsphere.local domain and assigning them administrative privileges. You can
then stop using administrator@vsphere.local.
Authentication in Different Versions of vSphere
If a user connects to a vCenter Server system version 5.0.x or earlier, vCenter Server authenticates the user
by validating the user against an Active Directory domain or against the list of local operating system users.
In vCenter Server 5.1 and later, users authenticate through vCenter Single Sign-On.
N You cannot use the vSphere Web Client to manage vCenter Server version 5.0 or earlier. Upgrade
vCenter Server to version 5.1 or later.
ESXi Users
ESXi is not integrated with vCenter Single Sign-On. You add the ESXi host to an Active Directory domain
explicitly. See “Congure a Host to Use Active Directory,” on page 190.
You can still create local ESXi users with the vSphere Client, vCLI, or PowerCLI. vCenter Server is not aware
of users that are local to ESXi and ESXi is not aware of vCenter Server users.
N Manage permissions for ESXi hosts through vCenter Server if possible.
How to Log In to vCenter Server Components
When a user logs in to a vCenter Server system from the vSphere Web Client, the login behavior depends on
whether the user is in the default domain, that is, the domain that is set as the default identity source.
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Users who are in the default domain can log in with their user name and password.
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Users who are in a domain that has been added to vCenter Single Sign-On as an identity source but is
not the default domain can log in to vCenter Server but must specify the domain in one of the following
ways.
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Including a domain name prex, for example, MYDOMAIN\user1
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Including the domain, for example, user1@mydomain.com
vSphere Security
26 VMware, Inc.