Even though it’s unlikely that you’ll ever need to use it, the UAG box also has TMG installed on it. TMG provides a lot of security and functionality to the UAG server, so it’s a good thing it’s on the box. However, you are times when you might run into trouble due to some problems with the TMG component. For example, UAG will need to access TMG storage for some configuration settings. Check this blog post on the UAG team blog for an example of where things might go wrong and how you can fix them:
HTH,
Deb