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Configuring AD authentication
Active Directory (AD) is a directory service provided by Windows 2000 Server and later versions. It
saves information of objects on a network and allows administrators and users to query the
information. AD uses structured data storage, which is the basis of the directory information logical
structure. The SSL VPN system can cooperate with the existing AD server of an enterprise
seamlessly to provide AD authentication for users in the enterprise.
For successful AD authentication of a user, you must also configure the user information on the AD
authentication server, create user groups, and add the user to the user groups. Make sure the user
groups configured on the authentication server exist on the SSL VPN gateway. Otherwise, the user
cannot log in. The number of user groups that the gateway supports for a user has a limit. Make sure
the number of user groups specified for a user on the authentication server is equal to or less than
the limit.
1. Select VPN > SSL VPN > Domain Management > Authentication Policy from the navigation
tree.
2. Click the AD Authentication tab. The LDAP authentication configuration page appears.
Figure 431 AD authentication
3. Configure the AD authentication settings as described in Table 184.
4. Click Apply.
Table 184 Configuration items
Item Description
Enable AD
authentication
Select this item to enable AD authentication.
AD Domain Name Enter the name of the AD domain.
AD Server IP
Enter the IP addresses of the AD servers.
You can specify four AD servers at most. When one server fails, the system uses
another server to authenticate users. The system selects the specified servers in the
configuration order of the servers. The first configured server has the highest priority.
Authentication Mode
Select an authentication mode for AD authentication. Options include
Password
,
Password+Certificate
, and
Certificate
.
Server Recovery
Time
Set the interval at which the system checks whether the failed AD server recovers.
Admin Username
Set an administrator account. It must be a user account that has the directory search
right in the User directory in the AD domain.