Troubleshooting OpenSSO with Firefox Add-Ons
How to Analyze and Troubleshoot OpenSSO Deployments 
A five-part Sun Developer Network article series explains how to analyze and troubleshoot OpenSSO deployments with the Mozilla Firefox web browser. Jim Faut along with contributions from Rick Palkovic begin with an introduction and configuration description, followed by these OpenSSO deployment examples: single sign-on and policy protection, cross-domain single sign-on, service provider initiated Fedlet single sign-on and identity provider initiated Fedlet single sign-on.
Tags: , cross-domain SSO, Fedlet SSO, Mozilla Firefox, Policy Protection, single sign on, SSO, Sun Developer Network