Dell POWEREDGE M1000E - Manual (Page 166)

166 Fabric OS Administrator’s Guide
53-1002745-02
Remote authentication
5
Two operational modes exist in LDAP authentication: FIPS mode and non-FIPS mode. This section
discusses LDAP authentication in non-FIPS mode. For information on LDAP in FIPS mode, refer to
Chapter 7, “Configuring Security Policies” . The following restrictions exist when using OpenLDAP in
non-FIPS mode:
• You must use the Common-Name for OpenLDAP authentication. User-Principal-Name is not
supported in OpenLDAP.
• OpenLDAP 2.4.23 is supported.
When a user is authenticated, the role of the user is obtained from the memberOf attribute, which
determines group membership. This feature is supported in OpenLDAP through the memberOf
overlay. You must use this overlay on the OpenLDAP server to assign membership information.
For OpenLDAP servers, you can use the ldapCfg -– maprole ldap_role_name switch_role command
to map LDAP server permissions to one of the default roles available on a switch. For more
information on RBAC roles, see
“Role-Based Access Control” on page 134.
OpenLDAP server configuration overview
For complete details about how to install and configure an OpenLDAP server, refer to the OpenLDAP
user documentation at http://www.openldap.org/doc/. A few key steps for the Brocade
environment are outlined here.
1. If your OpenLDAP server needs to be verified by the LDAP client (that is, the Brocade switch),
then you must install a Certificate Authority (CA) certificate on the OpenLDAP server.
Follow OpenLDAP instructions for generating and installing CA certificates on an OpenLDAP
server.
2. Enable group membership through the memberOf mechanism by including the memberOf
overlay in the slapd.conf file.
3. Create entries (users) in the OpenLDAP Directory.
4. Assign users to groups by using the member attribute.
5. Use the ldapCfg -–maprole ldap_role_name switch_role command to map an LDAP server role
to one of the default roles available on the switch.
6. Add the user’s Administrative Domains or Virtual Fabrics to the user entry by performing the
following steps.
a. Add the brcdAdVfData attribute to the existing OpenLDAP schema,
b. Add the brcdAdVfData attribute to the user entry in the LDAP directory with a value that
identifies the Administrative Domains or Virtual Fabrics with which to associate the user.
Enabling group membership
Group membership in OpenLDAP is specified by an overlay called memberOf. Overlays are helpful
in customizing the backend behavior without requiring changes to the backend code. The
memberOf overlay updates the memberOf attribute whenever changes occur to the membership
attribute of entries of the groupOfNames objectClass. To include this overlay, add “overlay
memberof” to the slapd.conf file, as shown in the following example.
overlay memberof
Example file:
include /usr/local/etc/openldap/schema/core.schema