We want to open our Confluence instance to our service network. They are not our employees, and as such we want them to have a very limited access. We don't want them landing on the dashboard (which is easily solved) and we don't want them to be able to access it.
The plan is that when they log on, they land on the "Service Network" space, which is the only space that they will have access to. At the moment they can follow the bread crumbs and get back to the dashboard where they will get the activity stream and team calendars, etc... - which we don't want them to.