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# Configure authentication authorities

Users gain access to a storage system or component either directly through a role assignment or indirectly through membership in a user group that has a role assignment, or both.

## Prerequisites

When configuring authentication to use LDAP, obtain the LDAP-SSL server bind distinguished name (DN) and password from your LDAP Administrator.

## About this task

This procedure explains how to configure Unisphere to authenticate users.

To configure authentication:

## Steps

1. Select to open the Settings panel.
2. Select Users and Groups > Authentication.
3. Select the Authentication Authority to use during login. Possible values are:
   - Local Directory—You can disable this authority when it is enabled, and enable it when it is disabled. When it is enabled, users can log in as a user from the CST local directory.
   - LDAP-SSL—You can disable this authority when it is enabled, and enable it when it is disabled. When it is enabled, users can log in as a user from the configured LDAP directory.
   - Windows OS/AD—You can disable this authority when it is enabled, and enable it when it is disabled. When it is enabled, users can log in as a user from the Windows local host or from the Active Directory domain, or both. This option applies only to Windows installations.
   - RSA SecurID—When it is enabled, the RSA token must be entered into the password field immediately followed by the user password.
   - YubiKey—When it is enabled, users can log in with YubiKey.
4. If you select the Windows OS/AD authority and click Modify, as an option you can specify to limit authentication to members of a specific Windows OS/AD group. To limit authentication, select the Limit authentication to members of a specific Windows OS/AD group(s) checkbox option, and type the Group Name(s), separated by commas.
5. If you are configuring LDAP-SSL, click Enable or Modify and do the following:
   1. Specify values for the following parameters.
      - Server (IP or Hostname)—IP address or hostname of the LDAP server to use for authentication - only alphanumeric characters are allowed and values longer than 40 characters are wrapped.
      - Port—Port number of the LDAP service. Typically, this value is 636 or 3269 for LDAP-SSL. Valid values range from 1 through 65,535.
      - Bind DN—Distinguished name of the privileged account used to perform operations, such as searching users and groups, on the LDAP directory - only alphanumeric characters are allowed and values longer than 60 characters are wrapped.
      - Bind Password—Password of the privileged account- only alphanumeric characters are allowed. Values longer than 15 characters are wrapped.
      - User Search Path—Distinguished name of the node at which to begin user searches. Only alphanumeric characters are allowed. Values longer than 40 characters are wrapped.
      - User Object Class—Object class identifying users in the LDAP hierarchy - only alphanumeric characters are allowed. Values longer than 15 characters are wrapped.
      - User ID Attribute—Attribute identifying the user login ID within the user object- only alphanumeric characters are allowed and values longer than 15 characters are wrapped.
      - Group Search Path—Distinguished name of the node at which to begin group searches - only alphanumeric characters are allowed and values longer than 40 characters are wrapped.
      - Group Object Class—Object class identifying groups in the LDAP hierarchy - only alphanumeric characters are allowed and values longer than 15 characters are wrapped.
      - Group Name Attribute—Attribute identifying the group name - only alphanumeric characters are allowed and values longer than 15 characters are wrapped.
      - Group Member Attribute—Attribute indicating group membership for a user within the group object - only alphanumeric characters are allowed and values longer than 15 characters are wrapped.
   2. To upload an SSL certificate, click Choose File, locate the certificate, and click Open. To view the contents of the certificate, click View Certificate. To clear the file selection, click Clear.
   3. Optional: To limit authentication to only members of specific LDAP groups, click Limit Authentication to members of LDAP group(s), select the option, and then type the Group Name(s), separated by commas.
6. If you are configuring RSA SecurID, click Enable or Modify and do the following:
   Specify values for the following parameters:
   - Server (IP or Hostname)—IP address or hostname of the RSA SecurID server to use for authentication. Only alphanumeric characters are allowed.
   - Port—Port number
   - Client ID—Client identity
   - Token Length—Token length
   - Access key—Access key value - click Show to display the access key value and click Hide to hide the access key value.
   - To upload a root CA certificate of the RSA SecurID server click Choose File, locate the certificate, and click Open. To clear the file selection, click Clear.
   - RSA Username—RSA username
   - RSA Token—RSA token - click the eye icon when typing in the value for the token and you can see what you are entering.
   - REST API user exception—Select to configure a REST API user exception.
   - Username(s)—List the comma-separated usernames to which the exception applies.
7. If you are configuring YubiKey, click Enable or Modify and do the following:
   Specify values for the following parameters:
   - Server (IP or Hostname)—IP address or hostname of the YubiKey server to use for authentication. Only alphanumeric characters are allowed.
   - Port—Port number
   - Client ID—Client identity
   - API key—API key value - click Show to display the access key value and click Hide to hide the access key value.
   - To upload a root CA certificate of the YubiKey server, click Choose File, locate the certificate, and click Open. To clear the file selection, click Clear.
   - YubiKey Username—YubiKey username
   - YubiKey Token—YubiKey token- click the eye icon when typing in the value and you can see what you are entering.
   - YubiKey REST API user exception—Select to configure a REST API user exception.
   - Username(s)—List the comma-separated usernames to which the exception applies.
8. Click OK.