If your organization is running a Windows domain, you can configure JIRA so that the users are automatically logged in when they log in to the domain with their workstations.
For this recipe, we will need the Kerberos SSO Authenticator for JIRA. You can get it at http://www.appfusions.com/display/KBRSCJ/Home.
You will also need to have the following set up:
Setting up the Windows domain SSO is not a simple task, as it involves many aspects of your network configuration. It is highly recommended that you engage the product vendor to ensure a smooth implementation.
Proceed with the following ...