Hello.  I'm a newbie to DNN and looking to see if DNN will work for what we need which is very similar to the 'unanswered post' referred to here:

I need a site for an organization (company.com) that has multiple sub-organizations.  Ideally, each sub-org will have its own entry page (suborg.company.com or company.com/suborg).  Each sub-org needs to have some uniqe content, but some content will be common to all (main org and sub-orgs).  Each sub-org will have its own set of users.  Users of sub-org1 will not be able to log in to sub-org2, etc.  Shared content will be news, announcements, events, online seminars, on-demand training courses, etc.

Can I use DNN to implement this using a single portal?  If so, I can see how I can share/hide content between the main and the sub-orgs using roles/permissions once the user is logged in.  However, prior to the user logging in (unauthenticated), how can I show differently branded entry pages for the main org and all the sub-orgs?

Thank you for any help or direction anyone might be able to provide.