Even the hosted (SaaS) version of our helpdesk now supports Active Directory user authentication. We've added a script that you can install under your local IIS server, that will authenticate your users against Microsoft Active Directory and then redirect them back to the SaaS help desk app.
Before now you were forced to install Helpdesk on your servers and host it yourself, if you needed to integrate with Active Directory. But not anymore – we have found a way to use remote Active Directory with our servers. Now you can combine all the benefits of using the hosted version and Active Directory authentication. It is completely secure and requires very little setup on your side. You will still need a server with IIS though, but literally any server will do.
Your local IIS server does not have to be in the DMZ zone, or have access to the Internet, it works on the client-side and works right out of the box - you just have to specify the "shared secret" in the IIS script.
To set up the AD-integrated authentication, go to the "Administrator - General settings" find the "Shared secret for remote authentication" textbox and you will see the AD script download link right next to it.