Can I present posts on a sub-blog

Hi, Since my Root-blog is public and the rest 6 sub-blog is member only I want global post on one common blog. That means that when you log in from the public blog all members land on a common (member only) blog and here I need to present the posts from the 5 member only city blogs.

Is that possible with this plugin? I know that some type od global post not work from member only secured sub blog.