17.3. Choose the Right SSO Implementation
If your organization already uses a Kerberos-based authentication and authorization system, such as Microsoft Active Directory, you can use the same systems to transparently authenticate to your enterprise applications running in JBoss EAP 6.
If you need to propagate security information among applications which run within the same server group or instance, you can use non-clustered SSO. This only involves configuring the valve in your application's jboss-web.xml descriptor.
If you need to propagate security information among applications running in a clustered environment across multiple JBoss EAP 6 instances, you can use the clustered SSO valve. This is configured in your application's jboss-web.xml.

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