##### To delete a user

1. Select the checkbox to the left of the name of the user(s) to be deleted.
2. Click Delete.
3. Click Close to return to the Edit Realm page.

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###### More Information

Equivalent asadmin command

`delete-file-user`

##### Managing Users with Network Security Services (NSS)

You can manage users using either the Admin Console as discussed in Managing file Realm Users or using NSS tools. NSS is a set of libraries designed to support cross-platform development of security-enabled client and server applications. Applications built with NSS can support SSL v2 and v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3 certificates, and other security standards. For detailed information, link to the following URLs:

- Network Security Services (NSS) at http://www.mozilla.org/projects/security/pki/nss/

- NSS Security Tools at http://www.mozilla.org/projects/security/pki/nss/tools/

- Overview of NSS at http://www.mozilla.org/projects/security/pki/nss/overview.html

##### Configuring Mutual Authentication

In mutual authentication, both server and client-side authentication are enabled. To test mutual authentication, a client with a valid certificate must exist. For information on mutual authentication, see the Security section of the http://java.sun.com/javaee/5/docs/tutorial/doc/index.html.

To enable mutual authentication for a specific application, in the deployment descriptor, set the method of authentication to `Client-Certificate`. For more information about using `deploytool`, refer to the Security section of the Java EE 5 Tutorial.