Citrix Gateway

Configuring LDAP Authentication

October 5, 2020

Contributed by:

You can configure the Citrix Gateway to authenticate user access with one or more LDAP servers.

LDAP authorization requires identical group names in the Active Directory, on the LDAP server, and on the Citrix Gateway. The characters and case must also match.

By default, LDAP authentication is secure by using Secure Sockets Layer (SSL) or Transport Layer Security (TLS). There are two types of secure LDAP connections. With one type, the LDAP server accepts the SSL or TLS connections on a port separate from the port that the LDAP server uses to accept clear LDAP connections. After users establish the SSL or TLS connections, LDAP traffic can be sent over the connection.

The port numbers for LDAP connections are:

389 for unsecured LDAP connections
636 for secure LDAP connections
3268 for Microsoft unsecure LDAP connections
3269 for Microsoft secure LDAP connections

The second type of secure LDAP connections uses the StartTLS command and uses port number 389. If you configure port numbers 389 or 3268 on Citrix Gateway, the server tries to use StartTLS to make the connection. If you use any other port number, the server attempts to make connections by using SSL or TLS. If the server cannot use StartTLS, SSL, or TLS, the connection fails.

If you specify the root directory of the LDAP server, Citrix Gateway searches all the subdirectories to find the user attribute. In large directories, this approach can affect performance. For this reason, Citrix recommends that you use a specific organizational unit (OU).

The following table contains examples of user attribute fields for LDAP servers:

LDAP server	User attribute	Case sensitive
Microsoft Active Directory Server	sAMAccountName	No
Novell eDirectory	ou	Yes
IBM Directory Server	uid	Yes
Lotus Domino	CN	Yes
Sun ONE directory (formerly iPlanet)	uid or cn	Yes

This table contains examples of the base DN:

LDAP server	Base DN
Microsoft Active Directory Server	DC=`citrix`,DC=local
Novell eDirectory	ou=users,ou=dev
IBM Directory Server	cn=users
Lotus Domino	OU=City,O=`Citrix`, C=US
Sun ONE directory (formerly iPlanet)	ou=People,dc=`citrix`,dc=com

The following table contains examples of bind DN:

LDAP server	Bind DN
Microsoft Active Directory Server	CN=Administrator, CN=Users, DC=`citrix`, DC=local
Novell eDirectory	cn=admin, o=`citrix`
IBM Directory Server	LDAP_dn
Lotus Domino	CN=Notes Administrator, O=`Citrix`, C=US
Sun ONE directory (formerly iPlanet)	uid=admin,ou=Administrators, ou=TopologyManagement,o=NetscapeRoot

Note: For more information regarding LDAP server settings, see Determining Attributes in Your LDAP Directory.

The official version of this content is in English. Some of the Citrix documentation content is machine translated for your convenience only. Citrix has no control over machine-translated content, which may contain errors, inaccuracies or unsuitable language. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, suitability, or correctness of any translations made from the English original into any other language, or that your Citrix product or service conforms to any machine translated content, and any warranty provided under the applicable end user license agreement or terms of service, or any other agreement with Citrix, that the product or service conforms with any documentation shall not apply to the extent that such documentation has been machine translated. Citrix will not be held responsible for any damage or issues that may arise from using machine-translated content.

Configuring LDAP Authentication

October 5, 2020

Contributed by:

October 5, 2020

Contributed by:

Configuring LDAP Authentication

In this article