Chapter 19. Single Sign On (SSO)
19.1. About Single Sign On (SSO) for Web Applications
Single Sign On (SSO) allows authentication to one resource to implicitly allow access to other resources.
Non-clustered SSO limits the sharing of access information to applications on the same virtual host. In addition, there is no resiliency in the event of a host failure. Clustered SSO data can be shared between applications in multiple hosts, and is resilient to failover. In addition, clustered SSO is able to receive requests from a load balancer.
If a resource is unprotected, a user is not challenged to authenticate at all. If a user accesses a protected resource, the user is required to authenticate.