Anonymous user have access to Preferences page

Hello everyone!
I have a trouble with permissions for Anonymous users
Anonymous users have a permissions to access to /bin/admin/XWiki/XWikiPreferences (Global Administration) page and can make some changes in xwiki preferences, it’s not good =)
I try to change permissions for Anonymous, but only what I get is ability to modify the Programming Right. If I turn it off, the Anonymous lost access to Admin Page, but Anonimous also lost ability to view a menu and page tree! =)
I’m try to find a Admin Page permissions, but I can’t. Request some help!
Have a good day! =)