This past week I created a plugin for one of my Redmine clients called Redmine Lock Users. It’s a simple plugin that adds a Rake task to Redmine to make it easy to lock all of the user accounts in the system.
We have been using this to lock down testing and staging servers. Since those servers have the same data as the production Redmine, any user could log into them on accident and not realize it. With this plugin we can lock all users accounts and only allow access for specific users.
If you need help, my Redmine bug tracker is open to the public and you are welcome to ask for help there.